[rcu] BUG: unable to handle kernel NULL pointer dereference at (null)
by Jet Chen
Hi Pranith,
0day kernel testing robot got the below dmesg and the first bad commit is
git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
commit c6e2955266d149d207656d7a5b975ac28c27826a
Author: Pranith Kumar <bobby.prani(a)gmail.com>
AuthorDate: Tue Jul 15 21:50:02 2014 -0400
Commit: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com>
CommitDate: Thu Jul 17 16:39:53 2014 -0700
rcu: Remove redundant checks for rcu_scheduler_fully_active
rcu_scheduler_fully_active is set to true early in the boot process.
rcu_prepare_kthreads() is called in two locations. Once after setting the above
flag and the other while hotplugging a CPU from rcu_cpu_notify(). CPU hotplug is
enabled much later by which time the above flag is already set. Hence checking
for this flag is redundant in this function.
The checks in rcu_spawn_one_boost_kthread() and rcu_spawn_all_nocb_kthreads()
are similarly redundant.
This commit removes the redundant checks for this flag from the above
locations.
Signed-off-by: Pranith Kumar <bobby.prani(a)gmail.com>
Signed-off-by: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com>
+----------------------------------------------------------+------------+------------+
| | 34e82ed60a | c6e2955266 |
+----------------------------------------------------------+------------+------------+
| boot_successes | 60 | 0 |
| boot_failures | 0 | 20 |
| BUG:unable_to_handle_kernel_NULL_pointer_dereference | 0 | 20 |
| Oops | 0 | 20 |
| EIP_is_at_wake_up_process | 0 | 20 |
| Kernel_panic-not_syncing:Attempted_to_kill_the_idle_task | 0 | 20 |
| backtrace:kthread_create_on_node | 0 | 20 |
| backtrace:rcu_cpu_notify | 0 | 20 |
| backtrace:rcu_init | 0 | 20 |
+----------------------------------------------------------+------------+------------+
[ 0.000000] Checking if this processor honours the WP bit even in supervisor mode...Ok.
[ 0.000000] Preemptible hierarchical RCU implementation.
[ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
[ 0.000000] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 0.000000] IP: [<81048a68>] wake_up_process+0x6/0x2c
[ 0.000000] *pdpt = 0000000000000000 *pde = f000ff53f000ff53 [ 0.000000] Oops: 0000 [#1] PREEMPT SMP [ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.16.0-rc1-00055-gc6e2955 #9
[ 0.000000] task: 81957830 ti: 8194c000 task.ti: 8194c000
[ 0.000000] EIP: 0060:[<81048a68>] EFLAGS: 00210082 CPU: 0
[ 0.000000] EIP is at wake_up_process+0x6/0x2c
[ 0.000000] EAX: 00000000 EBX: 00000000 ECX: 81957c40 EDX: 00000002
[ 0.000000] ESI: 93403620 EDI: 8194dedc EBP: 8194dea0 ESP: 8194de9c
[ 0.000000] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 0.000000] CR0: 80050033 CR2: 00000000 CR3: 01a72000 CR4: 000406b0
[ 0.000000] Stack:
[ 0.000000] 8194deb0 8194df14 8103f651 81957c58 00000000 00000000 00030000 dead4ead
[ 0.000000] ffffffff ffffffff 81a7fbfc 00000000 00000000 81885cce 8194ded4 8194ded4
[ 0.000000] 00000000 00030000 dead4ead ffffffff ffffffff 81a7fbfc 00000000 00000000
[ 0.000000] Call Trace:
[ 0.000000] [<8103f651>] kthread_create_on_node+0x90/0x108
[ 0.000000] [<8106a5b0>] rcu_spawn_one_nocb_kthread+0xba/0xda
[ 0.000000] [<81067eb3>] ? rcu_start_future_gp+0x118/0x118
[ 0.000000] [<8106a723>] rcu_cpu_notify+0x153/0x5b8
[ 0.000000] [<81657ae3>] ? __mutex_unlock_slowpath+0x106/0x11d
[ 0.000000] [<810678d2>] ? cpumask_next+0x22/0x26
[ 0.000000] [<81a058cc>] rcu_init+0x291/0x29b
[ 0.000000] [<819f2965>] start_kernel+0x1fa/0x372
[ 0.000000] [<819f255d>] ? set_init_arg+0x49/0x49
[ 0.000000] [<819f22af>] i386_start_kernel+0x79/0x7d
[ 0.000000] Code: 61 00 eb 07 89 f0 e8 df c4 ff ff be 01 00 00 00 8b 45 f0 8b 55 ec e8 b2 07 61 00 83 c4 10 89 f0 5b 5e 5f 5d c3 55 89 e5 53 89 c3 <8b> 00 a8 0c 74 0f ba e0 06 00 00 b8 8e 78 88 81 e8 0d 36 fe ff
[ 0.000000] EIP: [<81048a68>] wake_up_process+0x6/0x2c SS:ESP 0068:8194de9c
[ 0.000000] CR2: 0000000000000000
[ 0.000000] ---[ end trace db4b7fde7786bb07 ]---
[ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task!
git bisect start 58e323c3ee94f1abcecdeeef211a27d1c106c2b3 1795cd9b3a91d4b5473c97f491d63892442212ab --
git bisect good 2a68fcd415ae2fa824ebb7c88f59d657f6669b72 # 17:07 20+ 0 Merge remote-tracking branch 'kbuild/for-next'
git bisect good c6006742775b1c02e32d75a3aec8a26b587205b1 # 17:10 20+ 0 Merge remote-tracking branch 'tip/auto-latest'
git bisect bad 946edaf4f5889f86419444d51da2614a0a41371c # 17:12 0- 20 Merge remote-tracking branch 'staging/staging-next'
git bisect bad 42e17b0d47f73373c97261b63ec1ffe1f690dbf4 # 17:17 0- 8 Merge remote-tracking branch 'percpu/for-next'
git bisect good 57080e0a2472ad31c609217f6329233412321979 # 17:21 20+ 0 Merge remote-tracking branch 'ftrace/for-next'
git bisect bad ae885de230a4897c2bc0b324cb32f22c0b7c9747 # 17:29 0- 20 Merge remote-tracking branch 'kvm/linux-next'
git bisect bad f63782f6953176276ab089434e9b8fbe672167ff # 17:32 0- 20 Merge remote-tracking branch 'rcu/rcu/next'
git bisect good 1823172ab582eb54456fd1354869bb850a1196ba # 17:37 20+ 0 Merge branches 'doc.2014.07.08a', 'fixes.2014.07.09a', 'maintainers.2014.07.08b', 'nocbs.2014.07.07a' and 'torture.2014.07.07a' into HEAD
git bisect good 531f70396af7a4c4da733dd820af4289e887d0c2 # 17:51 20+ 0 rcu: Return bool type in rcu_lockdep_current_cpu_online()
git bisect good 78d9b29a96b632c00fe8136dacb9a39532469f81 # 18:12 20+ 0 rcu: Rationalize kthread spawning
git bisect good 94e336821b022b92b09d14792f512cb502b667f3 # 18:14 20+ 0 rcu: Update tiny.c references to tree.c
git bisect bad c6e2955266d149d207656d7a5b975ac28c27826a # 18:19 0- 20 rcu: Remove redundant checks for rcu_scheduler_fully_active
git bisect good 34e82ed60aad3205657e276e4640c3ea60657048 # 18:21 20+ 0 rcu: Remove stale comment in tree.c
# first bad commit: [c6e2955266d149d207656d7a5b975ac28c27826a] rcu: Remove redundant checks for rcu_scheduler_fully_active
git bisect good 34e82ed60aad3205657e276e4640c3ea60657048 # 18:26 60+ 0 rcu: Remove stale comment in tree.c
git bisect bad 58e323c3ee94f1abcecdeeef211a27d1c106c2b3 # 18:26 0- 11 Add linux-next specific files for 20140718
git bisect good 59ca9ee42838d0f597137cf811e47eaf42fdcb69 # 18:35 60+ 0 Merge tag 'stable/for-linus-3.16-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
git bisect bad 58e323c3ee94f1abcecdeeef211a27d1c106c2b3 # 18:50 0- 11 Add linux-next specific files for 20140718
This script may reproduce the error.
----------------------------------------------------------------------------
#!/bin/bash
kernel=$1
kvm=(
qemu-system-x86_64
-enable-kvm
-cpu Haswell,+smep,+smap
-kernel $kernel
-m 320
-smp 1
-net nic,vlan=1,model=e1000
-net user,vlan=1
-boot order=nc
-no-reboot
-watchdog i6300esb
-rtc base=localtime
-serial stdio
-display none
-monitor null )
append=(
hung_task_panic=1
earlyprintk=ttyS0,115200
debug
apic=debug
sysrq_always_enabled
rcupdate.rcu_cpu_stall_timeout=100
panic=10
softlockup_panic=1
nmi_watchdog=panic
prompt_ramdisk=0
console=ttyS0,115200
console=tty0
vga=normal
root=/dev/ram0
rw
drbd.minor_count=8
)
"${kvm[@]}" --append "${append[*]}"
----------------------------------------------------------------------------
Thanks,
Jet
8 years
- 1
- 0
[ 0.000000] general protection fault: 0000 [#1] SMP DEBUG_PAGEALLOC
by Su, Tao
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
git://internal_merge_and_test_tree devel-athens-mips-201407170120 commit d07c7f1ed61789e175fa975134855be32263be2c
Author: Andy Lutomirski <luto(a)amacapital.net>
AuthorDate: Tue Jul 15 18:34:20 2014 -0700
Commit: Andy Lutomirski <luto(a)amacapital.net>
CommitDate: Wed Jul 16 10:01:27 2014 -0700
x86,kaslr: Use MSR_KVM_GET_RNG_SEED for KASLR if available
It's considerably better than any of the alternatives on KVM.
Rather than reinventing all of the cpu feature query code, this fixes
native_cpuid to work in PIC objects.
I haven't combined it with boot/cpuflags.c's cpuid implementation:
including asm/processor.h from boot/cpuflags.c results in a flood of
unrelated errors, and fixing it might be messy.
Signed-off-by: Andy Lutomirski <luto(a)amacapital.net>
+------------------------------------------+------------+------------+------------------+
| | c6f07a6360 | d07c7f1ed6 |
| v3.16-rc5_071701 |
+------------------------------------------+------------+------------+------------------+
| boot_successes | 705 | 124 | 17 |
| boot_failures | 0 | 111 | 4 |
| general_protection_fault | 0 | 111 | 4 |
| RIP:setup_init_fpu_buf | 0 | 111 | 4 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 111 | 4 |
| backtrace:setup_init_fpu_buf | 0 | 111 | 4 |
| backtrace:xstate_enable_boot_cpu | 0 | 111 | 4 |
| backtrace:xsave_init | 0 | 111 | 4 |
| backtrace:fpu_init | 0 | 111 | 4 |
| backtrace:cpu_init | 0 | 111 | 4 |
| backtrace:trap_init | 0 | 111 | 4 |
+------------------------------------------+------------+------------+------------------+
[ 0.000000] Policy zone: DMA32
[ 0.000000] Kernel command line: hung_task_panic=1 earlyprintk=ttyS0,115200 debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=10 softlockup_panic=1 nmi_watchdog=panic prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal root=/dev/ram0 rw link=/kbuild-tests/run-queue/kvm/x86_64-randconfig-s0-07170233/linux-devel:devel-hourly-2014071701:d07c7f1ed61789e175fa975134855be32263be2c:bisect-linux0/.vmlinuz-d07c7f1ed61789e175fa975134855be32263be2c-20140717182236-14-kbuild branch=linux-devel/devel-hourly-2014071701 BOOT_IMAGE=/kernel/x86_64-randconfig-s0-07170233/d07c7f1ed61789e175fa975134855be32263be2c/vmlinuz-3.16.0-rc5-00004-gd07c7f1 drbd.minor_count=8
[ 0.000000] PID hash table entries: 2048 (order: 2, 16384 bytes)
[ 0.000000] general protection fault: 0000 [#1] SMP DEBUG_PAGEALLOC
[ 0.000000] Modules linked in:
[ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.16.0-rc5-00004-gd07c7f1 #1
[ 0.000000] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 0.000000] task: ffffffff81c10490 ti: ffffffff81c00000 task.ti: ffffffff81c00000
[ 0.000000] RIP: 0010:[<ffffffff81e9757c>] [<ffffffff81e9757c>] setup_init_fpu_buf+0x104/0x122
[ 0.000000] RSP: 0000:ffffffff81c03e30 EFLAGS: 00010086
[ 0.000000] RAX: 00000000ffffffff RBX: 0000000000000003 RCX: 0000000000000000
[ 0.000000] RDX: 00000000ffffffff RSI: ffffffff81c03e34 RDI: ffff880013ff9000
[ 0.000000] RBP: ffffffff81c03e68 R08: 0000000000000040 R09: ffffffff81c03e38
[ 0.000000] R10: ffffffff81c03e3c R11: 0000000000000040 R12: ffffffff81c03e3c
[ 0.000000] R13: ffffffff81c03e38 R14: ffffffff81c03e34 R15: ffffffff81c03e30
[ 0.000000] FS: 0000000000000000(0000) GS:ffff880011000000(0000) knlGS:0000000000000000
[ 0.000000] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 0.000000] CR2: ffff8800127ff000 CR3: 0000000001c0b000 CR4: 00000000000406a0
[ 0.000000] Stack:
[ 0.000000] 0000000000000000 0000000000000000 ffffffff81c03e80 ffffffff81c03e84
[ 0.000000] ffffffff81c03e7c ffffffff81c03e78 0000000000000000 ffffffff81c03ea8
[ 0.000000] ffffffff81e97711 0000000000000007 0000034000000340 0000000000000008
[ 0.000000] Call Trace:
[ 0.000000] [<ffffffff81e97711>] xstate_enable_boot_cpu+0x177/0x1f6
[ 0.000000] [<ffffffff8100c13e>] xsave_init+0x26/0x28
[ 0.000000] [<ffffffff8100b0c2>] fpu_init+0x96/0x9d
[ 0.000000] [<ffffffff810111e9>] cpu_init+0x2bc/0x2f3
[ 0.000000] [<ffffffff81e93b06>] trap_init+0x543/0x5eb
[ 0.000000] [<ffffffff81e91c2f>] start_kernel+0x1e2/0x3e6
[ 0.000000] [<ffffffff81e917c2>] ? set_init_arg+0x55/0x55
[ 0.000000] [<ffffffff81e91120>] ? early_idt_handlers+0x120/0x120
[ 0.000000] [<ffffffff81e91471>] x86_64_start_reservations+0x2a/0x2c
[ 0.000000] [<ffffffff81e91561>] x86_64_start_kernel+0xee/0xfb
[ 0.000000] Code: cc 48 8b 15 d7 a3 0d 00 48 63 c3 ff c3 89 0c 82 48 8b 15 c0 a3 0d 00 8b 4d c8 89 0c 82 eb bc 83 c8 ff 48 8b 3d 96 a3 0d 00 89 c2 <48> 0f ae 2f 48 8b 3d 89 a3 0d 00 89 c2 48 0f ae 27 58 5a 5b 41
[ 0.000000] RIP [<ffffffff81e9757c>] setup_init_fpu_buf+0x104/0x122
[ 0.000000] RSP <ffffffff81c03e30>
[ 0.000000] ---[ end trace 9ac76427702d2536 ]---
[ 0.000000] Kernel panic - not syncing: Fatal exception
git bisect start 5e60c2af7a8bde5cfaee8ffd77cfc5b62db0a04e 1795cd9b3a91d4b5473c97f491d63892442212ab --
git bisect good bc1f2f93f68bccd988af7e6f73384860ac241b78 # 09:45 135+ 0 Merge 'socfpga-nex/nios2-upstream' into devel-hourly-2014071701
git bisect bad 0d7e1ca40ef16fce5297579121717fc793761b38 # 09:45 0- 8 Merge 'dynticks/nohz/sysidle' into devel-hourly-2014071701
git bisect good 33c13bf2487a42efa1ac9bcce5623ab74a375c93 # 09:48 135+ 0 Merge 'ubifs/linux-next' into devel-hourly-2014071701
git bisect good 1032f73a32951d7f14ed7fdadedb0fef3c6d0f49 # 09:50 135+ 0 Merge 'spi/for-next' into devel-hourly-2014071701
git bisect bad 1f2859f0786338fe4c2a18ea518a5b2a2f1b5491 # 09:51 0- 2 Merge 'shawnguo/for-next' into devel-hourly-2014071701
git bisect good 73c47688a039158a6d395629d3ab32e606e13d1a # 09:53 235+ 0 Merge 'regulator/for-next' into devel-hourly-2014071701
git bisect bad b973fdf5e6e6fe84b51f79919e5dc8574ae859da # 09:53 0- 8 Merge 'luto/sync_rand_seed' into devel-hourly-2014071701
git bisect good 5778e65d5ca52bebbaa023e177d863e44f098e96 # 10:16 235+ 0 random,x86: Add arch_get_slow_rng_u64
git bisect bad d07c7f1ed61789e175fa975134855be32263be2c # 10:23 0- 50 x86,kaslr: Use MSR_KVM_GET_RNG_SEED for KASLR if available
git bisect good c6f07a63601fbb36c09bf250b5538abb47b51e44 # 10:35 235+ 0 random: Seed pools from arch_get_slow_rng_u64 at startup
# first bad commit: [d07c7f1ed61789e175fa975134855be32263be2c] x86,kaslr: Use MSR_KVM_GET_RNG_SEED for KASLR if available
git bisect good c6f07a63601fbb36c09bf250b5538abb47b51e44 # 10:47 705+ 0 random: Seed pools from arch_get_slow_rng_u64 at startup
git bisect bad 5e60c2af7a8bde5cfaee8ffd77cfc5b62db0a04e # 10:47 0- 4 0day head guard for 'devel-hourly-2014071701'
git bisect good b6603fe574af289dbe9eb9fb4c540bca04f5a053 # 12:16 705+ 0 Merge tag 'for-linus-20140716' of git://git.infradead.org/linux-mtd
git bisect good d4f4d1d45cd1b9aa60e61c2eab25a5d9a79a26f3 # 12:42 705+ 0 Add linux-next specific files for 20140716
This script may reproduce the error.
----------------------------------------------------------------------------
#!/bin/bash
kernel=$1
kvm=(
qemu-system-x86_64
-enable-kvm
-cpu Haswell,+smep,+smap
-kernel $kernel
-m 320
-smp 2
-net nic,vlan=1,model=e1000
-net user,vlan=1
-boot order=nc
-no-reboot
-watchdog i6300esb
-rtc base=localtime
-serial stdio
-display none
-monitor null
)
append=(
hung_task_panic=1
earlyprintk=ttyS0,115200
debug
apic=debug
sysrq_always_enabled
rcupdate.rcu_cpu_stall_timeout=100
panic=10
softlockup_panic=1
nmi_watchdog=panic
prompt_ramdisk=0
console=ttyS0,115200
console=tty0
vga=normal
root=/dev/ram0
rw
drbd.minor_count=8
)
"${kvm[@]}" --append "${append[*]}"
----------------------------------------------------------------------------
Thanks,
Fengguang
8 years, 1 month
- 1
- 0
FW: [bisect done] [ 0.000000] WARNING: CPU: 0 PID: 0 at arch/x86/kernel/cpu/common.c:1422 warn_pre_alternatives()
by Su, Tao
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
git://internal_merge_and_test_tree devel-athens-mips-201407170120 commit d07c7f1ed61789e175fa975134855be32263be2c
Author: Andy Lutomirski <luto(a)amacapital.net>
AuthorDate: Tue Jul 15 18:34:20 2014 -0700
Commit: Andy Lutomirski <luto(a)amacapital.net>
CommitDate: Wed Jul 16 10:01:27 2014 -0700
x86,kaslr: Use MSR_KVM_GET_RNG_SEED for KASLR if available
It's considerably better than any of the alternatives on KVM.
Rather than reinventing all of the cpu feature query code, this fixes
native_cpuid to work in PIC objects.
I haven't combined it with boot/cpuflags.c's cpuid implementation:
including asm/processor.h from boot/cpuflags.c results in a flood of
unrelated errors, and fixing it might be messy.
Signed-off-by: Andy Lutomirski <luto(a)amacapital.net>
+-------------------------------------------------------------------------+------------+------------+------------------+
|
| | c6f07a6360 | d07c7f1ed6 | v3.16-rc5_071701 |
+-------------------------------------------------------------------------+------------+------------+------------------+
| boot_successes | 1000 | 636 | 18 |
| boot_failures | 0 | 84 | 3 |
| WARNING:CPU:PID:at_arch/x86/kernel/cpu/common.c:warn_pre_alternatives() | 0 | 84 | 3 |
| BUG:unable_to_handle_kernel_NULL_pointer_dereference | 0 | 84 | 3 |
| Oops | 0 | 84 | 3 |
| RIP:__free_pages_bootmem | 0 | 84 | 3 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 84 | 3 |
| backtrace:free_all_bootmem | 0 | 84 | 3 |
| backtrace:mem_init | 0 | 84 | 3 |
+-------------------------------------------------------------------------+------------+------------+------------------+
[ 0.000000] PID hash table entries: 2048 (order: 2, 16384 bytes)
[ 0.000000] xsave: enabled xstate_bv 0x7, cntxt size 0x0
[ 0.000000] ------------[ cut here ]------------
[ 0.000000] WARNING: CPU: 0 PID: 0 at arch/x86/kernel/cpu/common.c:1422 warn_pre_alternatives+0x1e/0x20()
[ 0.000000] You're using static_cpu_has before alternatives have run!
[ 0.000000] Modules linked in:
[ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.16.0-rc5-00004-gd07c7f1 #4
[ 0.000000] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 0.000000] 0000000000000000 ffffffff81803c18 ffffffff813a7bd2 ffffffff81803c60
[ 0.000000] ffffffff81803c50 ffffffff810a5485 ffffffff810102f9 ffffffff81803e08
[ 0.000000] 0000000000000002 000000000000077c 0000000000000000 ffffffff81803cb0
[ 0.000000] Call Trace:
[ 0.000000] [<ffffffff813a7bd2>] dump_stack+0x4d/0x66
[ 0.000000] [<ffffffff810a5485>] warn_slowpath_common+0x7f/0x98
[ 0.000000] [<ffffffff810102f9>] ? warn_pre_alternatives+0x1e/0x20
[ 0.000000] [<ffffffff810a54ea>] warn_slowpath_fmt+0x4c/0x4e
[ 0.000000] [<ffffffff813b14e3>] ? restore_args+0x30/0x30
[ 0.000000] [<ffffffff810102f9>] warn_pre_alternatives+0x1e/0x20
[ 0.000000] [<ffffffff810378b5>] __do_page_fault+0x1bd/0x7ca
[ 0.000000] [<ffffffff810f5782>] ? console_unlock+0x377/0x3c1
[ 0.000000] [<ffffffff810e912e>] ? trace_hardirqs_off+0xd/0xf
[ 0.000000] [<ffffffff813afcc5>] ? _raw_spin_unlock_irqrestore+0x40/0x5e
[ 0.000000] [<ffffffff81b93d22>] ? __next_mem_range_rev+0x205/0x232
[ 0.000000] [<ffffffff810e90e0>] ? trace_hardirqs_off_caller+0xe7/0x128
[ 0.000000] [<ffffffff81226d8a>] ? trace_hardirqs_off_thunk+0x3a/0x3c
[ 0.000000] [<ffffffff81037ee4>] do_page_fault+0x22/0x27
[ 0.000000] [<ffffffff813b2378>] page_fault+0x28/0x30
[ 0.000000] [<ffffffff81b74f76>] ? __free_pages_bootmem+0x2d/0xf9
[ 0.000000] [<ffffffff81b78d61>] __free_memory_core+0xa7/0xbe
[ 0.000000] [<ffffffff81b78fe9>] free_all_bootmem+0x51/0xd2
[ 0.000000] [<ffffffff81b67188>] mem_init+0x5c/0x8d
[ 0.000000] [<ffffffff81b53cca>] start_kernel+0x1f7/0x53d
[ 0.000000] [<ffffffff81b53814>] ? set_init_arg+0x55/0x55
[ 0.000000] [<ffffffff81b53120>] ? early_idt_handlers+0x120/0x120
[ 0.000000] [<ffffffff81b53471>] x86_64_start_reservations+0x2a/0x2c
[ 0.000000] [<ffffffff81b535b3>] x86_64_start_kernel+0x140/0x14d
[ 0.000000] ---[ end trace e4962b91bd705c64 ]---
[ 0.000000] BUG: unable to handle kernel NULL pointer dereference at 000000000000077c
git bisect start 5e60c2af7a8bde5cfaee8ffd77cfc5b62db0a04e 1795cd9b3a91d4b5473c97f491d63892442212ab --
git bisect good bc1f2f93f68bccd988af7e6f73384860ac241b78 # 09:04 720+ 0 Merge 'socfpga-nex/nios2-upstream' into devel-hourly-2014071701
git bisect bad 0d7e1ca40ef16fce5297579121717fc793761b38 # 09:04 0- 16 Merge 'dynticks/nohz/sysidle' into devel-hourly-2014071701
git bisect good 33c13bf2487a42efa1ac9bcce5623ab74a375c93 # 09:08 720+ 0 Merge 'ubifs/linux-next' into devel-hourly-2014071701
git bisect good 1032f73a32951d7f14ed7fdadedb0fef3c6d0f49 # 09:12 720+ 0 Merge 'spi/for-next' into devel-hourly-2014071701
git bisect bad 1f2859f0786338fe4c2a18ea518a5b2a2f1b5491 # 09:12 0- 126 Merge 'shawnguo/for-next' into devel-hourly-2014071701
git bisect good 73c47688a039158a6d395629d3ab32e606e13d1a # 09:24 720+ 0 Merge 'regulator/for-next' into devel-hourly-2014071701
git bisect bad b973fdf5e6e6fe84b51f79919e5dc8574ae859da # 09:27 27- 18 Merge 'luto/sync_rand_seed' into devel-hourly-2014071701
git bisect good 5778e65d5ca52bebbaa023e177d863e44f098e96 # 09:36 720+ 0 random,x86: Add arch_get_slow_rng_u64
git bisect bad d07c7f1ed61789e175fa975134855be32263be2c # 09:39 0- 9 x86,kaslr: Use MSR_KVM_GET_RNG_SEED for KASLR if available
git bisect good c6f07a63601fbb36c09bf250b5538abb47b51e44 # 09:44 720+ 0 random: Seed pools from arch_get_slow_rng_u64 at startup
# first bad commit: [d07c7f1ed61789e175fa975134855be32263be2c] x86,kaslr: Use MSR_KVM_GET_RNG_SEED for KASLR if available
git bisect good c6f07a63601fbb36c09bf250b5538abb47b51e44 # 09:46 1000+ 0 random: Seed pools from arch_get_slow_rng_u64 at startup
git bisect bad 5e60c2af7a8bde5cfaee8ffd77cfc5b62db0a04e # 09:48 0- 3 0day head guard for 'devel-hourly-2014071701'
git bisect good b6603fe574af289dbe9eb9fb4c540bca04f5a053 # 10:02 1000+ 0 Merge tag 'for-linus-20140716' of git://git.infradead.org/linux-mtd
git bisect good d4f4d1d45cd1b9aa60e61c2eab25a5d9a79a26f3 # 12:20 1000+ 0 Add linux-next specific files for 20140716
This script may reproduce the error.
----------------------------------------------------------------------------
#!/bin/bash
kernel=$1
kvm=(
qemu-system-x86_64
-enable-kvm
-cpu Haswell,+smep,+smap
-kernel $kernel
-m 320
-smp 1
-net nic,vlan=1,model=e1000
-net user,vlan=1
-boot order=nc
-no-reboot
-watchdog i6300esb
-rtc base=localtime
-serial stdio
-display none
-monitor null
)
append=(
hung_task_panic=1
earlyprintk=ttyS0,115200
debug
apic=debug
sysrq_always_enabled
rcupdate.rcu_cpu_stall_timeout=100
panic=10
softlockup_panic=1
nmi_watchdog=panic
prompt_ramdisk=0
console=ttyS0,115200
console=tty0
vga=normal
root=/dev/ram0
rw
drbd.minor_count=8
)
"${kvm[@]}" --append "${append[*]}"
----------------------------------------------------------------------------
Thanks,
Fengguang
8 years, 1 month
- 1
- 0
[fix sd bug] cc77bf69aa5: -100.0% dmesg.WARNING:CPU:PID:at_kernel/sched/core.c:build_sched_domain()
by Aaron Lu
FYI, we noticed the below changes on
git://bee.sh.intel.com/git/ydu19/linux cc-v4.5-on-3.16-rc2
commit cc77bf69aa534146fe5aa967dff73f8756045c87 ("fix sd bug")
0a25ea50beea784 cc77bf69aa534146fe5aa967d
--------------- -------------------------
1 ~ 0% -100.0% 0 ~ 0% ivb43/kbuild/50%
1 ~ 0% -100.0% 0 ~ 0% ivb44/pigz/100%-128K
1 ~ 0% -100.0% 0 ~ 0% ivb44/pigz/100%-512K
1 ~ 0% -100.0% 0 ~ 0% ivb44/pigz/25%-128K
1 ~ 0% -100.0% 0 ~ 0% ivb44/pigz/25%-512K
1 ~ 0% -100.0% 0 ~ 0% lkp-ne02/fio-jbod/12HDD-ext4-randwrite-sync-64k
1 ~ 0% -100.0% 0 ~ 0% loslunas/unixbench/fsbuffer
1 ~ 0% -100.0% 0 ~ 0% loslunas/unixbench/fsdisk
1 ~ 0% -100.0% 0 ~ 0% loslunas/unixbench/fstime
1 ~ 0% -100.0% 0 ~ 0% nhm-white/unixbench/fsdisk
10 ~ 0% -100.0% 0 ~ 0% TOTAL dmesg.WARNING:CPU:PID:at_kernel/sched/core.c:build_sched_domain()
Legend:
~XX% - stddev percent
[+-]XX% - change percent
time.involuntary_context_switches
1.6e+06 ++----------------------------------------------------------------+
O O O O O O O O O O O O O O O O O O O |
1.4e+06 ++ O O |
| |
1.2e+06 ++ .* |
1e+06 ++ .*. : |
| *. : |
800000 ++ + *..*
*..*.*..*..*.*..*.*..*..*.*..*..*.*..*..*.*..* *..* |
600000 ++ : : |
400000 ++ : : |
| : : |
200000 ++ : : |
| : |
0 ++----------------------------------------------*-----------------+
dmesg.WARNING:CPU:PID:at_kernel/sched/core.c:build_sched_domain()
1 ++-------------------------------------------*--*-*--*--*--*--*-*--*--*
| : |
| : |
0.8 ++ : |
| : |
| : |
0.6 ++ : |
| : |
0.4 ++ : |
| : |
| : |
0.2 ++ : |
| : |
| : |
0 O+-O--O-O--O--O--O--O-O--O--O--O--O-O--O--O--O--O-O--O--O-------------+
dmesg.IP-Config:Auto-configuration_of_network_failed
1 ++------------------------------------------------*-------------------+
| : |
| : |
0.8 ++ :: |
| : : |
| : : |
0.6 ++ : : |
| : : |
0.4 ++ : : |
| : : |
| : : |
0.2 ++ : : |
| : : |
| : : |
0 O+-O--O-O--O--O--O--O-O--O--O--O--O-O--O--O--O--O-O--O--O--*--*-*--*--*
[*] bisect-good sample
[O] bisect-bad sample
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
Thanks,
Aaron
8 years, 1 month
- 1
- 0
[sched] 90b105011e9: +220.6% ebizzy.throughput.per_thread.stddev_percent
by Aaron Lu
FYI, we noticed the below changes on
git://bee.sh.intel.com/git/ydu19/linux rewrite-v2-on-3.16-rc3
commit 90b105011e9f1bd43efa21f3c2dd45f0f0a94853 ("sched: Rewrite per entity runnable load average tracking")
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
0.08 ~ 3% +220.6% 0.25 ~ 2% lkp-nex04/ebizzy/200%-100x-10s
0.08 ~ 3% +220.6% 0.25 ~ 2% TOTAL ebizzy.throughput.per_thread.stddev_percent
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
78 ~ 1% -44.0% 43 ~ 2% lkp-nex04/ebizzy/200%-100x-10s
78 ~ 1% -44.0% 43 ~ 2% TOTAL ebizzy.throughput.per_thread.min
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
94327 ~ 0% -34.4% 61894 ~ 6% lkp-snb01/hackbench/50%-process-pipe
94327 ~ 0% -34.4% 61894 ~ 6% TOTAL hackbench.throughput
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
125 ~ 1% +34.9% 168 ~ 1% lkp-nex04/ebizzy/200%-100x-10s
125 ~ 1% +34.9% 168 ~ 1% TOTAL ebizzy.throughput.per_thread.max
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
12765 ~ 0% -3.5% 12320 ~ 0% lkp-nex04/ebizzy/200%-100x-10s
12765 ~ 0% -3.5% 12320 ~ 0% TOTAL ebizzy.throughput
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
40.84 ~ 0% -2.8% 39.68 ~ 0% lkp-nex04/ebizzy/200%-100x-10s
40.84 ~ 0% -2.8% 39.68 ~ 0% TOTAL ebizzy.time.user
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
596 ~ 0% -1.2% 588 ~ 0% lkp-nex04/ebizzy/200%-100x-10s
596 ~ 0% -1.2% 588 ~ 0% TOTAL ebizzy.time.sys
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
31 ~ 0% +438.1% 166 ~14% lkp-nex04/ebizzy/200%-100x-10s
31 ~ 0% +437.4% 166 ~14% lkp-snb01/hackbench/50%-process-pipe
62 ~ 0% +437.7% 333 ~14% TOTAL slabinfo.nfs_inode_cache.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
0.13 ~ 3% +609.0% 0.95 ~ 6% lkp-snb01/hackbench/50%-process-pipe
0.13 ~ 3% +609.0% 0.95 ~ 6% TOTAL perf-profile.cpu-cycles.enqueue_task_fair.enqueue_task.activate_task.ttwu_do_activate.try_to_wake_up
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
0.06 ~16% +1544.8% 0.95 ~27% lkp-snb01/hackbench/50%-process-pipe
0.06 ~16% +1544.8% 0.95 ~27% TOTAL perf-profile.cpu-cycles.effective_load.isra.39.select_task_rq_fair.try_to_wake_up.default_wake_function.autoremove_wake_function
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
0.28 ~ 3% +481.2% 1.60 ~ 4% lkp-snb01/hackbench/50%-process-pipe
0.28 ~ 3% +481.2% 1.60 ~ 4% TOTAL perf-profile.cpu-cycles.dequeue_task_fair.dequeue_task.deactivate_task.__schedule.schedule
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
33045 ~41% +9192.0% 3070587 ~11% xps2/pigz/100%-128K
33045 ~41% +9192.0% 3070587 ~11% TOTAL cpuidle.C1-NHM.time
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
3477 ~ 2% -87.4% 437 ~44% lkp-nex04/ebizzy/200%-100x-10s
3477 ~ 2% -87.4% 437 ~44% TOTAL proc-vmstat.thp_fault_alloc
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
0.38 ~ 2% +940.4% 3.91 ~ 7% lkp-snb01/hackbench/50%-process-pipe
0.38 ~ 2% +940.4% 3.91 ~ 7% TOTAL perf-profile.cpu-cycles.dequeue_entity.dequeue_task_fair.dequeue_task.deactivate_task.__schedule
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
31 ~ 0% +438.1% 166 ~14% lkp-nex04/ebizzy/200%-100x-10s
31 ~ 0% +437.4% 166 ~14% lkp-snb01/hackbench/50%-process-pipe
62 ~ 0% +437.7% 333 ~14% TOTAL slabinfo.nfs_inode_cache.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
0.15 ~24% -100.0% 0.00 ~ 0% xps2/pigz/100%-128K
0.15 ~24% -100.0% 0.00 ~ 0% TOTAL turbostat.%pc6
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
10 ~31% +309.4% 43 ~27% lkp-nex04/ebizzy/200%-100x-10s
10 ~31% +309.4% 43 ~27% TOTAL numa-numastat.node1.other_node
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
7700 ~11% +256.8% 27474 ~ 4% lkp-nex04/ebizzy/200%-100x-10s
65 ~14% +3090.5% 2086 ~ 1% xps2/pigz/100%-128K
7766 ~11% +280.6% 29561 ~ 4% TOTAL cpuidle.C1-NHM.usage
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
0.96 ~ 2% +312.4% 3.98 ~ 7% lkp-snb01/hackbench/50%-process-pipe
0.96 ~ 2% +312.4% 3.98 ~ 7% TOTAL perf-profile.cpu-cycles.enqueue_entity.enqueue_task_fair.enqueue_task.activate_task.ttwu_do_activate
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
245 ~33% +536.6% 1559 ~ 4% lkp-nex04/ebizzy/200%-100x-10s
245 ~21% +189.7% 711 ~ 6% lkp-snb01/hackbench/50%-process-pipe
490 ~27% +362.9% 2271 ~ 5% TOTAL slabinfo.nfs_read_data.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
245 ~33% +536.6% 1559 ~ 4% lkp-nex04/ebizzy/200%-100x-10s
245 ~21% +189.7% 711 ~ 6% lkp-snb01/hackbench/50%-process-pipe
490 ~27% +362.9% 2271 ~ 5% TOTAL slabinfo.nfs_read_data.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
0.54 ~ 5% +266.7% 1.98 ~ 8% lkp-snb01/hackbench/50%-process-pipe
0.54 ~ 5% +266.7% 1.98 ~ 8% TOTAL perf-profile.cpu-cycles.update_cfs_shares.dequeue_entity.dequeue_task_fair.dequeue_task.deactivate_task
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
26050068 ~ 0% -66.2% 8797918 ~11% lkp-snb01/hackbench/50%-process-pipe
26050068 ~ 0% -66.2% 8797918 ~11% TOTAL numa-numastat.node0.local_node
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
26052612 ~ 0% -66.2% 8799611 ~11% lkp-snb01/hackbench/50%-process-pipe
26052612 ~ 0% -66.2% 8799611 ~11% TOTAL numa-numastat.node0.numa_hit
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
0.66 ~ 2% +208.2% 2.03 ~ 7% lkp-snb01/hackbench/50%-process-pipe
0.66 ~ 2% +208.2% 2.03 ~ 7% TOTAL perf-profile.cpu-cycles.update_cfs_shares.enqueue_entity.enqueue_task_fair.enqueue_task.activate_task
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
18 ~11% +223.7% 60 ~15% lkp-nex04/ebizzy/200%-100x-10s
18 ~11% +223.7% 60 ~15% TOTAL numa-numastat.node3.other_node
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
5000094 ~ 0% -66.1% 1693077 ~11% lkp-snb01/hackbench/50%-process-pipe
5000094 ~ 0% -66.1% 1693077 ~11% TOTAL proc-vmstat.pgalloc_dma32
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
48530586 ~ 0% -65.9% 16553111 ~ 8% lkp-snb01/hackbench/50%-process-pipe
48530586 ~ 0% -65.9% 16553111 ~ 8% TOTAL proc-vmstat.pgalloc_normal
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
53411898 ~ 0% -66.0% 18154935 ~ 8% lkp-snb01/hackbench/50%-process-pipe
53411898 ~ 0% -66.0% 18154935 ~ 8% TOTAL proc-vmstat.numa_local
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
53416133 ~ 0% -66.0% 18159158 ~ 8% lkp-snb01/hackbench/50%-process-pipe
53416133 ~ 0% -66.0% 18159158 ~ 8% TOTAL proc-vmstat.numa_hit
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
53511788 ~ 0% -65.9% 18229726 ~ 8% lkp-snb01/hackbench/50%-process-pipe
53511788 ~ 0% -65.9% 18229726 ~ 8% TOTAL proc-vmstat.pgfree
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
27374593 ~ 0% -65.8% 9362195 ~ 9% lkp-snb01/hackbench/50%-process-pipe
27374593 ~ 0% -65.8% 9362195 ~ 9% TOTAL numa-numastat.node1.local_node
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
27376287 ~ 0% -65.8% 9364726 ~ 9% lkp-snb01/hackbench/50%-process-pipe
27376287 ~ 0% -65.8% 9364726 ~ 9% TOTAL numa-numastat.node1.numa_hit
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
0.69 ~ 5% +187.9% 1.99 ~ 7% lkp-snb01/hackbench/50%-process-pipe
0.69 ~ 5% +187.9% 1.99 ~ 7% TOTAL perf-profile.cpu-cycles._raw_spin_lock_irq.__schedule.schedule.pipe_wait.pipe_read
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
13314878 ~ 0% -61.9% 5072798 ~ 7% lkp-snb01/hackbench/50%-process-pipe
13314878 ~ 0% -61.9% 5072798 ~ 7% TOTAL numa-vmstat.node0.numa_local
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
13379562 ~ 0% -61.9% 5099009 ~ 6% lkp-snb01/hackbench/50%-process-pipe
13379562 ~ 0% -61.9% 5099009 ~ 6% TOTAL numa-vmstat.node0.numa_hit
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
14038787 ~ 0% -61.8% 5363607 ~ 4% lkp-snb01/hackbench/50%-process-pipe
14038787 ~ 0% -61.8% 5363607 ~ 4% TOTAL numa-vmstat.node1.numa_local
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
14048697 ~ 0% -61.5% 5412165 ~ 4% lkp-snb01/hackbench/50%-process-pipe
14048697 ~ 0% -61.5% 5412165 ~ 4% TOTAL numa-vmstat.node1.numa_hit
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
0.18 ~ 4% +125.0% 0.40 ~ 5% xps2/pigz/100%-128K
0.18 ~ 4% +91.3% 0.35 ~ 7% xps2/pigz/100%-512K
0.36 ~ 4% +107.8% 0.75 ~ 6% TOTAL turbostat.%c1
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1031 ~ 6% +170.6% 2789 ~15% lkp-nex04/ebizzy/200%-100x-10s
1031 ~ 6% +170.6% 2789 ~15% TOTAL cpuidle.C1E-NHM.usage
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
120 ~27% +121.2% 265 ~32% lkp-nex04/ebizzy/200%-100x-10s
120 ~27% +121.2% 265 ~32% TOTAL slabinfo.UDPv6.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
120 ~27% +121.2% 265 ~32% lkp-nex04/ebizzy/200%-100x-10s
120 ~27% +121.2% 265 ~32% TOTAL slabinfo.UDPv6.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
179754 ~31% -63.1% 66317 ~15% lkp-nex04/ebizzy/200%-100x-10s
578 ~10% -56.4% 252 ~ 7% xps2/pigz/100%-512K
180332 ~31% -63.1% 66570 ~15% TOTAL cpuidle.C3-NHM.usage
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1.87 ~ 4% +130.3% 4.31 ~ 6% lkp-snb01/hackbench/50%-process-pipe
1.87 ~ 4% +130.3% 4.31 ~ 6% TOTAL perf-profile.cpu-cycles._raw_spin_lock.try_to_wake_up.default_wake_function.autoremove_wake_function.__wake_up_common
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1.26 ~ 6% -53.8% 0.58 ~23% lkp-snb01/hackbench/50%-process-pipe
1.26 ~ 6% -53.8% 0.58 ~23% TOTAL perf-profile.cpu-cycles.osq_lock.__mutex_lock_slowpath.mutex_lock.pipe_write.new_sync_write
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
5294 ~ 0% -55.2% 2369 ~13% lkp-snb01/hackbench/50%-process-pipe
5294 ~ 0% -55.2% 2369 ~13% TOTAL cpuidle.C3-SNB.usage
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1.39 ~ 3% -51.8% 0.67 ~13% lkp-snb01/hackbench/50%-process-pipe
1.39 ~ 3% -51.8% 0.67 ~13% TOTAL perf-profile.cpu-cycles.__mutex_lock_slowpath.mutex_lock.pipe_write.new_sync_write.vfs_write
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
408 ~ 0% +120.0% 897 ~ 5% lkp-nex04/ebizzy/200%-100x-10s
346 ~11% +97.1% 683 ~ 8% lkp-snb01/hackbench/50%-process-pipe
754 ~ 5% +109.5% 1581 ~ 7% TOTAL slabinfo.mnt_cache.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
408 ~ 0% +120.0% 897 ~ 5% lkp-nex04/ebizzy/200%-100x-10s
346 ~11% +97.1% 683 ~ 8% lkp-snb01/hackbench/50%-process-pipe
754 ~ 5% +109.5% 1581 ~ 7% TOTAL slabinfo.mnt_cache.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
0.21 ~ 6% -46.6% 0.11 ~23% xps2/pigz/100%-128K
0.20 ~10% -50.5% 0.10 ~27% xps2/pigz/100%-512K
0.40 ~ 8% -48.5% 0.21 ~25% TOTAL turbostat.%c6
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1907 ~ 3% +105.5% 3919 ~ 9% lkp-snb01/hackbench/50%-process-pipe
1907 ~ 3% +105.5% 3919 ~ 9% TOTAL numa-vmstat.node0.nr_page_table_pages
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
230 ~ 4% -44.3% 128 ~ 7% lkp-nex04/ebizzy/200%-100x-10s
746 ~ 0% -53.7% 346 ~14% lkp-snb01/hackbench/50%-process-pipe
977 ~ 1% -51.5% 474 ~12% TOTAL numa-vmstat.node1.nr_kernel_stack
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
3697 ~ 4% -44.3% 2059 ~ 7% lkp-nex04/ebizzy/200%-100x-10s
11940 ~ 0% -53.6% 5543 ~13% lkp-snb01/hackbench/50%-process-pipe
15637 ~ 1% -51.4% 7602 ~12% TOTAL numa-meminfo.node1.KernelStack
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
24 ~15% +95.1% 48 ~13% lkp-nex04/ebizzy/200%-100x-10s
24 ~15% +95.1% 48 ~13% TOTAL numa-numastat.node2.other_node
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1.31 ~ 4% -48.1% 0.68 ~17% lkp-snb01/hackbench/50%-process-pipe
1.31 ~ 4% -48.1% 0.68 ~17% TOTAL perf-profile.cpu-cycles.mutex_spin_on_owner.__mutex_lock_slowpath.mutex_lock.pipe_write.new_sync_write
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
11 ~21% +135.1% 26 ~29% lkp-nex04/ebizzy/200%-100x-10s
11 ~21% +135.1% 26 ~29% TOTAL numa-numastat.node0.other_node
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1.24 ~ 1% -47.2% 0.66 ~ 6% lkp-snb01/hackbench/50%-process-pipe
1.24 ~ 1% -47.2% 0.66 ~ 6% TOTAL perf-profile.cpu-cycles.vfs_write.sys_write.system_call_fastpath.__write_nocancel
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
65905 ~ 1% -43.2% 37404 ~15% lkp-snb01/hackbench/50%-process-pipe
65905 ~ 1% -43.2% 37404 ~15% TOTAL cpuidle.C7-SNB.usage
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
713527 ~ 7% -41.8% 415278 ~17% lkp-snb01/hackbench/50%-process-pipe
713527 ~ 7% -41.8% 415278 ~17% TOTAL cpuidle.C3-SNB.time
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1.70 ~ 1% -42.5% 0.98 ~ 2% lkp-snb01/hackbench/50%-process-pipe
1.70 ~ 1% -42.5% 0.98 ~ 2% TOTAL perf-profile.cpu-cycles.__fget_light.sys_write.system_call_fastpath.__write_nocancel
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
684 ~ 6% +112.8% 1455 ~ 6% lkp-nex04/ebizzy/200%-100x-10s
756 ~ 8% +42.9% 1080 ~ 4% lkp-snb01/hackbench/50%-process-pipe
1440 ~ 7% +76.1% 2535 ~ 5% TOTAL slabinfo.RAW.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
684 ~ 6% +112.8% 1455 ~ 6% lkp-nex04/ebizzy/200%-100x-10s
756 ~ 8% +42.9% 1080 ~ 4% lkp-snb01/hackbench/50%-process-pipe
1440 ~ 7% +76.1% 2535 ~ 5% TOTAL slabinfo.RAW.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
544 ~ 0% +70.8% 930 ~ 5% lkp-snb01/hackbench/50%-process-pipe
544 ~ 0% +70.8% 930 ~ 5% TOTAL numa-vmstat.node0.nr_kernel_stack
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
8245 ~ 2% +63.6% 13492 ~ 5% lkp-snb01/hackbench/50%-process-pipe
8245 ~ 2% +63.6% 13492 ~ 5% TOTAL numa-vmstat.node0.nr_slab_unreclaimable
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
32982 ~ 2% +63.6% 53973 ~ 5% lkp-snb01/hackbench/50%-process-pipe
32982 ~ 2% +63.6% 53973 ~ 5% TOTAL numa-meminfo.node0.SUnreclaim
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
647 ~21% +31.0% 847 ~14% lkp-nex04/ebizzy/200%-100x-10s
7622 ~ 3% +105.8% 15686 ~ 8% lkp-snb01/hackbench/50%-process-pipe
8269 ~ 5% +100.0% 16534 ~ 9% TOTAL numa-meminfo.node0.PageTables
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
17280 ~ 1% -38.0% 10710 ~ 7% lkp-snb01/hackbench/50%-process-pipe
17280 ~ 1% -38.0% 10710 ~ 7% TOTAL numa-vmstat.node1.nr_slab_unreclaimable
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
69099 ~ 1% -38.0% 42837 ~ 7% lkp-snb01/hackbench/50%-process-pipe
69099 ~ 1% -38.0% 42837 ~ 7% TOTAL numa-meminfo.node1.SUnreclaim
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1.96 ~ 3% -39.6% 1.18 ~ 3% lkp-snb01/hackbench/50%-process-pipe
1.96 ~ 3% -39.6% 1.18 ~ 3% TOTAL perf-profile.cpu-cycles.pipe_write.new_sync_write.vfs_write.sys_write.system_call_fastpath
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
176373 ~ 4% +79.0% 315783 ~ 4% lkp-nex04/ebizzy/200%-100x-10s
66273 ~ 0% -33.6% 44026 ~ 4% lkp-snb01/hackbench/50%-process-pipe
242647 ~ 3% +48.3% 359809 ~ 4% TOTAL proc-vmstat.pgmigrate_success
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
176373 ~ 4% +79.0% 315783 ~ 4% lkp-nex04/ebizzy/200%-100x-10s
66273 ~ 0% -33.6% 44026 ~ 4% lkp-snb01/hackbench/50%-process-pipe
242647 ~ 3% +48.3% 359809 ~ 4% TOTAL proc-vmstat.numa_pages_migrated
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
2.40 ~ 2% -39.3% 1.46 ~ 6% lkp-snb01/hackbench/50%-process-pipe
2.40 ~ 2% -39.3% 1.46 ~ 6% TOTAL perf-profile.cpu-cycles.mutex_lock.pipe_write.new_sync_write.vfs_write.sys_write
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
0.54 ~35% +61.7% 0.87 ~25% xps2/pigz/100%-128K
0.79 ~15% +46.3% 1.16 ~25% xps2/pigz/100%-512K
1.33 ~23% +52.6% 2.03 ~25% TOTAL perf-profile.cpu-cycles.task_tick_fair.scheduler_tick.update_process_times.tick_sched_handle.tick_sched_timer
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
4.24 ~ 2% -38.0% 2.63 ~ 4% lkp-snb01/hackbench/50%-process-pipe
4.24 ~ 2% -38.0% 2.63 ~ 4% TOTAL perf-profile.cpu-cycles.mutex_unlock.new_sync_write.vfs_write.sys_write.system_call_fastpath
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
288905 ~ 5% +99.5% 576507 ~37% xps2/pigz/100%-128K
288905 ~ 5% +99.5% 576507 ~37% TOTAL cpuidle.C3-NHM.time
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
431 ~ 2% -36.5% 274 ~ 2% lkp-snb01/hackbench/50%-process-pipe
431 ~ 2% -36.5% 274 ~ 2% TOTAL slabinfo.kmalloc-192.active_slabs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
431 ~ 2% -36.5% 274 ~ 2% lkp-snb01/hackbench/50%-process-pipe
431 ~ 2% -36.5% 274 ~ 2% TOTAL slabinfo.kmalloc-192.num_slabs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
282 ~12% -20.7% 223 ~11% lkp-nex04/ebizzy/200%-100x-10s
4880 ~ 0% -45.5% 2658 ~13% lkp-snb01/hackbench/50%-process-pipe
5162 ~ 1% -44.2% 2882 ~13% TOTAL numa-vmstat.node1.nr_page_table_pages
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1131 ~12% -20.8% 896 ~11% lkp-nex04/ebizzy/200%-100x-10s
19497 ~ 0% -45.5% 10630 ~13% lkp-snb01/hackbench/50%-process-pipe
20629 ~ 1% -44.1% 11526 ~13% TOTAL numa-meminfo.node1.PageTables
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
92848 ~ 2% -31.5% 63575 ~ 6% lkp-snb01/hackbench/50%-process-pipe
92848 ~ 2% -31.5% 63575 ~ 6% TOTAL numa-meminfo.node1.Slab
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
52700 ~ 3% +44.2% 75978 ~ 5% lkp-snb01/hackbench/50%-process-pipe
52700 ~ 3% +44.2% 75978 ~ 5% TOTAL numa-meminfo.node0.Slab
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
387862 ~ 0% -29.0% 275268 ~ 2% lkp-snb01/hackbench/50%-process-pipe
387862 ~ 0% -29.0% 275268 ~ 2% TOTAL proc-vmstat.numa_pte_updates
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
5083 ~ 1% +14.8% 5837 ~ 3% lkp-nex04/ebizzy/200%-100x-10s
8726 ~ 1% +70.7% 14900 ~ 5% lkp-snb01/hackbench/50%-process-pipe
13810 ~ 1% +50.2% 20738 ~ 4% TOTAL numa-meminfo.node0.KernelStack
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
7854 ~ 1% +40.2% 11011 ~ 1% lkp-nex04/ebizzy/200%-100x-10s
7854 ~ 1% +40.2% 11011 ~ 1% TOTAL slabinfo.Acpi-Namespace.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
7854 ~ 1% +40.2% 11011 ~ 1% lkp-nex04/ebizzy/200%-100x-10s
7854 ~ 1% +40.2% 11011 ~ 1% TOTAL slabinfo.Acpi-Namespace.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1.24 ~ 1% -28.6% 0.88 ~ 3% lkp-snb01/hackbench/50%-process-pipe
1.24 ~ 1% -28.6% 0.88 ~ 3% TOTAL perf-profile.cpu-cycles.try_to_wake_up.default_wake_function.autoremove_wake_function.__wake_up_common.__wake_up_sync_key
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
9909 ~ 2% -18.1% 8118 ~ 1% lkp-nex04/ebizzy/200%-100x-10s
18162 ~ 2% -36.5% 11527 ~ 2% lkp-snb01/hackbench/50%-process-pipe
28071 ~ 2% -30.0% 19646 ~ 1% TOTAL slabinfo.kmalloc-192.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1672 ~ 3% +54.7% 2587 ~ 5% lkp-nex04/ebizzy/200%-100x-10s
1417 ~ 7% +20.1% 1703 ~ 1% lkp-snb01/hackbench/50%-process-pipe
3090 ~ 5% +38.8% 4290 ~ 3% TOTAL slabinfo.sock_inode_cache.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1672 ~ 3% +54.7% 2587 ~ 5% lkp-nex04/ebizzy/200%-100x-10s
1417 ~ 7% +20.1% 1703 ~ 1% lkp-snb01/hackbench/50%-process-pipe
3090 ~ 5% +38.8% 4290 ~ 3% TOTAL slabinfo.sock_inode_cache.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
751758 ~ 3% -32.9% 504399 ~ 3% lkp-nex04/ebizzy/200%-100x-10s
127894 ~ 0% -21.4% 100534 ~ 6% lkp-snb01/hackbench/50%-process-pipe
879652 ~ 2% -31.2% 604934 ~ 4% TOTAL proc-vmstat.numa_hint_faults_local
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
5674268 ~ 3% -22.7% 4387467 ~13% xps2/pigz/100%-512K
5674268 ~ 3% -22.7% 4387467 ~13% TOTAL cpuidle.C6-NHM.time
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
226646 ~ 0% -25.8% 168276 ~ 3% lkp-snb01/hackbench/50%-process-pipe
226646 ~ 0% -25.8% 168276 ~ 3% TOTAL proc-vmstat.numa_hint_faults
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
6896 ~ 0% -26.1% 5096 ~ 0% lkp-snb01/hackbench/50%-process-pipe
6896 ~ 0% -26.1% 5096 ~ 0% TOTAL slabinfo.files_cache.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
6896 ~ 0% -26.1% 5096 ~ 0% lkp-snb01/hackbench/50%-process-pipe
6896 ~ 0% -26.1% 5096 ~ 0% TOTAL slabinfo.files_cache.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1.07 ~ 7% -29.3% 0.76 ~ 3% lkp-snb01/hackbench/50%-process-pipe
1.07 ~ 7% -29.3% 0.76 ~ 3% TOTAL perf-profile.cpu-cycles.__sb_start_write.pipe_write.new_sync_write.vfs_write.sys_write
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
41318119 ~ 2% -25.0% 30984280 ~ 3% lkp-snb01/hackbench/50%-process-pipe
41318119 ~ 2% -25.0% 30984280 ~ 3% TOTAL cpuidle.C7-SNB.time
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
499 ~ 5% -17.9% 409 ~ 7% lkp-snb01/hackbench/50%-process-pipe
499 ~ 5% -17.9% 409 ~ 7% TOTAL slabinfo.kmem_cache.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
499 ~ 5% -17.9% 409 ~ 7% lkp-snb01/hackbench/50%-process-pipe
499 ~ 5% -17.9% 409 ~ 7% TOTAL slabinfo.kmem_cache.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1783 ~ 1% +30.4% 2325 ~ 0% lkp-nex04/ebizzy/200%-100x-10s
1783 ~ 1% +30.4% 2325 ~ 0% TOTAL numa-meminfo.node3.KernelStack
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1680 ~ 6% +27.3% 2139 ~ 2% lkp-nex04/ebizzy/200%-100x-10s
1680 ~ 6% +27.3% 2139 ~ 2% TOTAL numa-meminfo.node2.KernelStack
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
9909 ~ 2% -18.1% 8118 ~ 1% lkp-nex04/ebizzy/200%-100x-10s
18124 ~ 2% -36.4% 11527 ~ 2% lkp-snb01/hackbench/50%-process-pipe
2659 ~ 7% +13.1% 3009 ~ 2% xps2/pigz/100%-512K
30693 ~ 3% -26.2% 22655 ~ 1% TOTAL slabinfo.kmalloc-192.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1154 ~ 7% +35.9% 1569 ~ 5% xps2/pigz/100%-128K
1245 ~ 6% -26.3% 917 ~10% xps2/pigz/100%-512K
2399 ~ 7% +3.6% 2486 ~ 7% TOTAL cpuidle.C6-NHM.usage
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
2.45 ~ 1% -22.1% 1.91 ~ 2% lkp-snb01/hackbench/50%-process-pipe
2.45 ~ 1% -22.1% 1.91 ~ 2% TOTAL perf-profile.cpu-cycles.copy_user_generic_string.copy_page_to_iter.pipe_read.new_sync_read.vfs_read
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
12302 ~ 8% -18.8% 9995 ~ 6% lkp-nex04/ebizzy/200%-100x-10s
15880 ~ 2% -24.9% 11921 ~ 3% lkp-snb01/hackbench/50%-process-pipe
28183 ~ 4% -22.2% 21917 ~ 4% TOTAL slabinfo.kmalloc-256.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
12779 ~ 8% -19.5% 10289 ~ 5% lkp-nex04/ebizzy/200%-100x-10s
16146 ~ 2% -25.2% 12073 ~ 3% lkp-snb01/hackbench/50%-process-pipe
28926 ~ 4% -22.7% 22362 ~ 4% TOTAL slabinfo.kmalloc-256.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
975 ~12% +24.8% 1216 ~10% lkp-nex04/ebizzy/200%-100x-10s
975 ~12% +24.8% 1216 ~10% TOTAL slabinfo.bdev_cache.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
975 ~12% +24.8% 1216 ~10% lkp-nex04/ebizzy/200%-100x-10s
975 ~12% +24.8% 1216 ~10% TOTAL slabinfo.bdev_cache.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
2.96 ~ 1% -21.0% 2.34 ~ 3% lkp-snb01/hackbench/50%-process-pipe
2.96 ~ 1% -21.0% 2.34 ~ 3% TOTAL perf-profile.cpu-cycles.idle_cpu.select_task_rq_fair.try_to_wake_up.default_wake_function.autoremove_wake_function
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
11923 ~ 2% -20.5% 9474 ~ 1% lkp-nex04/ebizzy/200%-100x-10s
9950 ~ 2% -21.8% 7781 ~ 1% lkp-snb01/hackbench/50%-process-pipe
21873 ~ 2% -21.1% 17255 ~ 1% TOTAL slabinfo.kmalloc-128.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
11912 ~ 2% -20.5% 9466 ~ 1% lkp-nex04/ebizzy/200%-100x-10s
9927 ~ 2% -21.6% 7781 ~ 1% lkp-snb01/hackbench/50%-process-pipe
21839 ~ 2% -21.0% 17247 ~ 1% TOTAL slabinfo.kmalloc-128.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1.21 ~ 2% -20.5% 0.96 ~ 3% lkp-snb01/hackbench/50%-process-pipe
4.32 ~ 7% +35.9% 5.87 ~ 4% xps2/pigz/100%-128K
7.01 ~ 4% +20.0% 8.42 ~ 6% xps2/pigz/100%-512K
12.55 ~ 5% +21.6% 15.25 ~ 5% TOTAL perf-profile.cpu-cycles.copy_user_generic_string.copy_page_from_iter.pipe_write.new_sync_write.vfs_write
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
609 ~ 4% -14.7% 519 ~ 6% lkp-snb01/hackbench/50%-process-pipe
609 ~ 4% -14.7% 519 ~ 6% TOTAL slabinfo.kmem_cache_node.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
627 ~ 4% -14.3% 537 ~ 5% lkp-snb01/hackbench/50%-process-pipe
627 ~ 4% -14.3% 537 ~ 5% TOTAL slabinfo.kmem_cache_node.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
6515 ~ 6% -19.2% 5261 ~ 1% lkp-snb01/hackbench/50%-process-pipe
6515 ~ 6% -19.2% 5261 ~ 1% TOTAL slabinfo.task_xstate.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
6542 ~ 6% -19.1% 5290 ~ 1% lkp-snb01/hackbench/50%-process-pipe
6542 ~ 6% -19.1% 5290 ~ 1% TOTAL slabinfo.task_xstate.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
126604 ~11% -20.7% 100390 ~ 5% lkp-nex04/ebizzy/200%-100x-10s
71139 ~ 6% +20.2% 85475 ~ 3% lkp-snb01/hackbench/50%-process-pipe
197744 ~ 9% -6.0% 185865 ~ 4% TOTAL meminfo.DirectMap4k
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
17133 ~ 3% +23.7% 21185 ~ 5% lkp-nex04/ebizzy/200%-100x-10s
3668 ~10% +22.9% 4507 ~ 5% xps2/pigz/100%-128K
3606 ~ 8% +24.2% 4479 ~13% xps2/pigz/100%-512K
24407 ~ 5% +23.6% 30171 ~ 6% TOTAL slabinfo.anon_vma.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
17133 ~ 3% +23.7% 21185 ~ 5% lkp-nex04/ebizzy/200%-100x-10s
3668 ~10% +22.9% 4507 ~ 5% xps2/pigz/100%-128K
3606 ~ 8% +23.2% 4445 ~14% xps2/pigz/100%-512K
24407 ~ 5% +23.5% 30137 ~ 6% TOTAL slabinfo.anon_vma.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1.33 ~ 1% -17.1% 1.11 ~ 2% lkp-snb01/hackbench/50%-process-pipe
1.33 ~ 1% -17.1% 1.11 ~ 2% TOTAL perf-profile.cpu-cycles.pipe_read.new_sync_read.vfs_read.sys_read.system_call_fastpath
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
29821 ~ 7% +12.9% 33678 ~ 6% lkp-nex04/ebizzy/200%-100x-10s
29821 ~ 7% +12.9% 33678 ~ 6% TOTAL numa-meminfo.node3.Slab
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
4595951 ~ 1% +9.5% 5031138 ~ 2% lkp-nex04/ebizzy/200%-100x-10s
1473658 ~ 1% -10.9% 1313231 ~ 6% lkp-snb01/hackbench/50%-process-pipe
107028 ~ 2% -27.5% 77542 ~ 6% xps2/pigz/100%-128K
104772 ~ 1% -17.9% 85990 ~ 4% xps2/pigz/100%-512K
6281411 ~ 1% +3.6% 6507902 ~ 3% TOTAL softirqs.RCU
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
3619 ~ 4% +17.4% 4247 ~ 2% lkp-nex04/ebizzy/200%-100x-10s
3619 ~ 4% +17.4% 4247 ~ 2% TOTAL slabinfo.shmem_inode_cache.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
3619 ~ 4% +17.4% 4247 ~ 2% lkp-nex04/ebizzy/200%-100x-10s
3619 ~ 4% +17.4% 4247 ~ 2% TOTAL slabinfo.shmem_inode_cache.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1770 ~ 4% +20.3% 2129 ~ 4% lkp-nex04/ebizzy/200%-100x-10s
1770 ~ 4% +20.3% 2129 ~ 4% TOTAL slabinfo.blkdev_ioc.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
0.12 ~ 3% -18.6% 0.10 ~ 5% lkp-snb01/hackbench/50%-process-pipe
0.12 ~ 3% -18.6% 0.10 ~ 5% TOTAL turbostat.%c7
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1770 ~ 4% +20.3% 2129 ~ 4% lkp-nex04/ebizzy/200%-100x-10s
1770 ~ 4% +20.3% 2129 ~ 4% TOTAL slabinfo.blkdev_ioc.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
10358 ~ 2% -15.7% 8737 ~ 3% lkp-nex04/ebizzy/200%-100x-10s
10358 ~ 2% -15.7% 8737 ~ 3% TOTAL slabinfo.kmalloc-512.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1266 ~ 7% -11.5% 1120 ~ 7% lkp-snb01/hackbench/50%-process-pipe
1266 ~ 7% -11.5% 1120 ~ 7% TOTAL numa-meminfo.node1.Unevictable
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
316 ~ 7% -11.4% 280 ~ 7% lkp-snb01/hackbench/50%-process-pipe
316 ~ 7% -11.4% 280 ~ 7% TOTAL numa-vmstat.node1.nr_unevictable
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1253 ~ 7% -11.7% 1107 ~ 7% lkp-snb01/hackbench/50%-process-pipe
1253 ~ 7% -11.7% 1107 ~ 7% TOTAL numa-meminfo.node1.Mlocked
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
313 ~ 7% -11.6% 276 ~ 7% lkp-snb01/hackbench/50%-process-pipe
313 ~ 7% -11.6% 276 ~ 7% TOTAL numa-vmstat.node1.nr_mlock
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
10436 ~ 2% -15.2% 8850 ~ 3% lkp-nex04/ebizzy/200%-100x-10s
10436 ~ 2% -15.2% 8850 ~ 3% TOTAL slabinfo.kmalloc-512.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
8.63 ~ 1% -15.5% 7.29 ~ 8% lkp-snb01/hackbench/50%-process-pipe
8.63 ~ 1% -15.5% 7.29 ~ 8% TOTAL perf-profile.cpu-cycles._raw_spin_lock_irqsave.__wake_up_sync_key.pipe_write.new_sync_write.vfs_write
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
10.72 ~ 6% -17.2% 8.87 ~ 3% xps2/pigz/100%-512K
10.72 ~ 6% -17.2% 8.87 ~ 3% TOTAL perf-profile.cpu-cycles.deflateSetDictionary
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1.33 ~10% -17.6% 1.10 ~12% lkp-snb01/hackbench/50%-process-pipe
1.33 ~10% -17.6% 1.10 ~12% TOTAL perf-profile.cpu-cycles.avc_has_perm.inode_has_perm.file_has_perm.selinux_file_permission.security_file_permission
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
556666 ~ 3% -12.6% 486635 ~ 3% lkp-snb01/hackbench/50%-process-pipe
556666 ~ 3% -12.6% 486635 ~ 3% TOTAL numa-meminfo.node1.MemUsed
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
336 ~ 6% +10.8% 372 ~ 5% lkp-snb01/hackbench/50%-process-pipe
336 ~ 6% +10.8% 372 ~ 5% TOTAL numa-vmstat.node0.nr_unevictable
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1345 ~ 6% +10.8% 1491 ~ 5% lkp-snb01/hackbench/50%-process-pipe
1345 ~ 6% +10.8% 1491 ~ 5% TOTAL numa-meminfo.node0.Unevictable
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
3319 ~ 4% -12.4% 2906 ~ 5% xps2/pigz/100%-512K
3319 ~ 4% -12.4% 2906 ~ 5% TOTAL slabinfo.vm_area_struct.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1578 ~ 3% +12.2% 1770 ~ 3% lkp-snb01/hackbench/50%-process-pipe
1578 ~ 3% +12.2% 1770 ~ 3% TOTAL slabinfo.kmalloc-2048.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1330 ~ 6% +11.0% 1476 ~ 5% lkp-snb01/hackbench/50%-process-pipe
1330 ~ 6% +11.0% 1476 ~ 5% TOTAL numa-meminfo.node0.Mlocked
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
332 ~ 6% +11.0% 369 ~ 5% lkp-snb01/hackbench/50%-process-pipe
332 ~ 6% +11.0% 369 ~ 5% TOTAL numa-vmstat.node0.nr_mlock
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
3359 ~ 3% -12.0% 2955 ~ 4% xps2/pigz/100%-512K
3359 ~ 3% -12.0% 2955 ~ 4% TOTAL slabinfo.vm_area_struct.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
32706 ~ 6% +14.1% 37325 ~ 5% lkp-nex04/ebizzy/200%-100x-10s
32706 ~ 6% +14.1% 37325 ~ 5% TOTAL numa-meminfo.node3.Active
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
492581 ~ 3% +12.6% 554760 ~ 3% lkp-snb01/hackbench/50%-process-pipe
492581 ~ 3% +12.6% 554760 ~ 3% TOTAL numa-meminfo.node0.MemUsed
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
17831 ~ 1% -10.1% 16030 ~ 2% xps2/pigz/100%-128K
17380 ~ 2% -14.2% 14918 ~ 3% xps2/pigz/100%-512K
35212 ~ 1% -12.1% 30948 ~ 2% TOTAL softirqs.SCHED
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
6163 ~ 0% -12.3% 5403 ~ 1% lkp-snb01/hackbench/50%-process-pipe
6163 ~ 0% -12.3% 5403 ~ 1% TOTAL slabinfo.kmalloc-1024.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
2746 ~ 2% +15.3% 3167 ~ 4% lkp-snb01/hackbench/50%-process-pipe
2746 ~ 2% +15.3% 3167 ~ 4% TOTAL slabinfo.kmalloc-96.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
2788 ~ 2% +15.1% 3208 ~ 4% lkp-snb01/hackbench/50%-process-pipe
2788 ~ 2% +15.1% 3208 ~ 4% TOTAL slabinfo.kmalloc-96.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
2180282 ~ 0% -12.6% 1905527 ~ 2% lkp-snb01/hackbench/50%-process-pipe
2180282 ~ 0% -12.6% 1905527 ~ 2% TOTAL proc-vmstat.pgfault
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
6020 ~ 4% +8.5% 6530 ~ 6% lkp-nex04/ebizzy/200%-100x-10s
1643 ~ 0% -10.0% 1479 ~ 1% xps2/pigz/100%-128K
7663 ~ 3% +4.5% 8009 ~ 5% TOTAL slabinfo.proc_inode_cache.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
6091 ~ 1% -11.7% 5378 ~ 1% lkp-snb01/hackbench/50%-process-pipe
6091 ~ 1% -11.7% 5378 ~ 1% TOTAL slabinfo.kmalloc-1024.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
6225 ~ 4% +9.2% 6800 ~ 5% lkp-nex04/ebizzy/200%-100x-10s
1643 ~ 0% -9.6% 1486 ~ 1% xps2/pigz/100%-128K
7869 ~ 3% +5.3% 8286 ~ 4% TOTAL slabinfo.proc_inode_cache.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1689 ~ 3% +11.6% 1884 ~ 4% lkp-snb01/hackbench/50%-process-pipe
1689 ~ 3% +11.6% 1884 ~ 4% TOTAL slabinfo.kmalloc-2048.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
2049 ~ 2% +13.9% 2335 ~ 2% lkp-nex04/ebizzy/200%-100x-10s
2049 ~ 2% +13.9% 2335 ~ 2% TOTAL slabinfo.xfs_buf.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
2049 ~ 2% +13.9% 2335 ~ 2% lkp-nex04/ebizzy/200%-100x-10s
2049 ~ 2% +13.9% 2335 ~ 2% TOTAL slabinfo.xfs_buf.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
2208 ~ 2% +13.9% 2516 ~ 2% lkp-nex04/ebizzy/200%-100x-10s
2208 ~ 2% +13.9% 2516 ~ 2% TOTAL slabinfo.blkdev_requests.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
2208 ~ 2% +13.9% 2516 ~ 2% lkp-nex04/ebizzy/200%-100x-10s
2208 ~ 2% +13.9% 2516 ~ 2% TOTAL slabinfo.blkdev_requests.num_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
2618 ~ 1% +9.5% 2866 ~ 1% lkp-nex04/ebizzy/200%-100x-10s
2618 ~ 1% +9.5% 2866 ~ 1% TOTAL slabinfo.signal_cache.active_objs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
4955169 ~ 0% -20.2% 3954599 ~ 0% lkp-nex04/ebizzy/200%-100x-10s
4.846e+08 ~ 0% +35.3% 6.554e+08 ~15% lkp-snb01/hackbench/50%-process-pipe
652246 ~ 0% +103.5% 1327360 ~ 0% xps2/pigz/100%-128K
218987 ~ 1% +89.5% 415071 ~ 0% xps2/pigz/100%-512K
4.904e+08 ~ 0% +34.8% 6.611e+08 ~15% TOTAL time.involuntary_context_switches
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
166228 ~ 1% -37.4% 103980 ~15% lkp-nex04/ebizzy/200%-100x-10s
966547 ~ 0% +45.6% 1407110 ~ 0% xps2/pigz/100%-128K
257447 ~ 0% +56.8% 403743 ~ 0% xps2/pigz/100%-512K
1390222 ~ 0% +37.7% 1914835 ~ 1% TOTAL time.voluntary_context_switches
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
4037924 ~ 0% +8.3% 4371093 ~ 1% lkp-snb01/hackbench/50%-process-pipe
5750 ~ 0% +65.1% 9492 ~ 0% xps2/pigz/100%-128K
1970 ~ 0% +61.0% 3172 ~ 0% xps2/pigz/100%-512K
4045644 ~ 0% +8.4% 4383759 ~ 1% TOTAL vmstat.system.cs
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1.227e+09 ~ 0% -3.5% 1.185e+09 ~ 0% lkp-nex04/ebizzy/200%-100x-10s
616315 ~ 0% -32.2% 417574 ~ 3% lkp-snb01/hackbench/50%-process-pipe
1.228e+09 ~ 0% -3.5% 1.185e+09 ~ 0% TOTAL time.minor_page_faults
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
59644.43 ~ 0% -1.2% 58921.96 ~ 0% lkp-nex04/ebizzy/200%-100x-10s
18.39 ~ 1% +29.2% 23.76 ~ 0% xps2/pigz/100%-128K
59662.82 ~ 0% -1.2% 58945.73 ~ 0% TOTAL time.system_time
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
1445520 ~ 0% -24.6% 1090360 ~11% lkp-snb01/hackbench/50%-process-pipe
9896 ~ 0% -2.2% 9683 ~ 0% xps2/pigz/100%-128K
8922 ~ 0% -2.4% 8708 ~ 0% xps2/pigz/100%-512K
1464338 ~ 0% -24.3% 1108751 ~11% TOTAL vmstat.system.in
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
4099 ~ 0% -3.1% 3971 ~ 0% lkp-nex04/ebizzy/200%-100x-10s
4099 ~ 0% -3.1% 3971 ~ 0% TOTAL time.user_time
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
161 ~ 0% -2.4% 157 ~ 0% lkp-snb01/hackbench/50%-process-pipe
161 ~ 0% -2.4% 157 ~ 0% TOTAL turbostat.Cor_W
fd470ff9da8ec69 90b105011e9f1bd43efa21f3c
--------------- -------------------------
189 ~ 0% -2.3% 184 ~ 0% lkp-snb01/hackbench/50%-process-pipe
189 ~ 0% -2.3% 184 ~ 0% TOTAL turbostat.Pkg_W
Legend:
~XX% - stddev percent
[+-]XX% - change percent
time.voluntary_context_switches
420000 ++-----------------------------------------------------------------+
O O O O |
400000 ++ O |
380000 ++ |
| |
360000 ++ |
340000 ++ |
| |
320000 ++ |
300000 ++ |
| |
280000 ++ |
260000 ++ |
*....*....*...*....*....*....*....*...*....*....*....*...*....*....*
240000 ++-----------------------------------------------------------------+
time.involuntary_context_switches
450000 ++-----------------------------------------------------------------+
| |
O O O O O |
400000 ++ |
| |
| |
350000 ++ |
| |
300000 ++ |
| |
| |
250000 ++ |
| |
*....*....*... ..*....*....*...*....*....*....*...*....*....*
200000 ++------------*----*-----------------------------------------------+
vmstat.system.in
9500 ++-------------------------------------------------------------------+
| * |
9400 ++ * .. : |
9300 ++ . : .. : |
| .. : * : |
9200 ++ : .. : |
9100 *+ : .*.... .. : |
| : .. * *... |
9000 ++ *. *....*.... |
8900 ++ *....*....*....*....*
| |
8800 ++ |
8700 O+ O O O |
| O |
8600 ++-------------------------------------------------------------------+
vmstat.system.cs
3200 O+---O----O----O----O------------------------------------------------+
| |
3000 ++ |
| |
2800 ++ |
| |
2600 ++ |
| |
2400 ++ |
| |
2200 ++ |
| |
2000 *+...*....*.... ..*....*....*... ..*....*....*....*....*
| *....*.. *....*.. |
1800 ++-------------------------------------------------------------------+
[*] bisect-good sample
[O] bisect-bad sample
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
Thanks,
Aaron
8 years, 1 month
- 1
- 0
[x86, kaslr] BUG: unable to handle kernel NULL pointer dereference at 00000008
by Fengguang Wu
Hi Kees,
This bug is a bit old (and not very reproducible), however it's still
showing up in the upstream and linux-next trees.
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
commit 6145cfe394a7f138f6b64491c5663f97dba12450
Author: Kees Cook <keescook(a)chromium.org>
AuthorDate: Thu Oct 10 17:18:18 2013 -0700
Commit: H. Peter Anvin <hpa(a)linux.intel.com>
CommitDate: Sun Oct 13 03:13:13 2013 -0700
x86, kaslr: Raise the maximum virtual address to -1 GiB on x86_64
On 64-bit, this raises the maximum location to -1 GiB (from -1.5 GiB),
the upper limit currently, since the kernel fixmap page mappings need
to be moved to use the other 1 GiB (which would be the theoretical
limit when building with -mcmodel=kernel).
Signed-off-by: Kees Cook <keescook(a)chromium.org>
Link: http://lkml.kernel.org/r/1381450698-28710-7-git-send-email-keescook@chrom...
Signed-off-by: H. Peter Anvin <hpa(a)linux.intel.com>
+-------------------------------------------------------------+------------+------------+---------------+
| | f32360ef66 | 6145cfe394 | next-20140704 |
+-------------------------------------------------------------+------------+------------+---------------+
| boot_successes | 1000 | 885 | 1 |
| boot_failures | 0 | 15 | 10 |
| BUG:kernel_boot_crashed | 0 | 8 | |
| BUG:unable_to_handle_kernel_NULL_pointer_dereference | 0 | 3 | 8 |
| Oops | 0 | 3 | 7 |
| EIP_is_at__lock_acquire | 0 | 3 | 1 |
| BUG:scheduling_while_atomic | 0 | 3 | |
| INFO:lockdep_is_turned_off | 0 | 3 | |
| Kernel_panic-not_syncing:Attempted_to_kill_init_exitcode= | 0 | 3 | |
| backtrace:free_reserved_area | 0 | 3 | |
| backtrace:free_init_pages | 0 | 3 | |
| backtrace:populate_rootfs | 0 | 3 | |
| backtrace:kernel_init_freeable | 0 | 3 | |
| BUG:kernel_boot_hang | 0 | 1 | 1 |
| BUG:Int_CR2(null) | 0 | 3 | |
| backtrace:kvm_get_tsc_khz | 0 | 3 | |
| backtrace:kvmclock_init | 0 | 3 | |
| EIP_is_at_no_context | 0 | 0 | 5 |
| Kernel_panic-not_syncing:Fatal_exception_in_interrupt | 0 | 0 | 5 |
| backtrace:ring_buffer_consumer_thread | 0 | 0 | 1 |
| WARNING:CPU:PID:at_lib/debugobjects.c:debug_print_object() | 0 | 0 | 4 |
| BUG:spinlock_lockup_suspected_on_CPU | 0 | 0 | 1 |
| EIP_is_at_default_send_IPI_mask_logical | 0 | 0 | 1 |
| EIP_is_at_slob_free | 0 | 0 | 1 |
| WARNING:CPU:PID:at_lib/debugobjects.c:__debug_object_init() | 0 | 0 | 2 |
| backtrace:__debug_object_init | 0 | 0 | 2 |
| backtrace:debug_object_init | 0 | 0 | 2 |
| backtrace:init_timer_key | 0 | 0 | 2 |
| backtrace:timer_fixup_assert_init | 0 | 0 | 2 |
| backtrace:debug_object_assert_init | 0 | 0 | 2 |
| backtrace:warn_slowpath_null | 0 | 0 | 1 |
| backtrace:torture_stutter | 0 | 0 | 1 |
| backtrace:debug_print_object | 0 | 0 | 1 |
| backtrace:schedule_timeout | 0 | 0 | 1 |
| INFO:trying_to_register_non-static_key | 0 | 0 | 1 |
| backtrace:cryptomgr_test | 0 | 0 | 1 |
+-------------------------------------------------------------+------------+------------+---------------+
[ 0.910849] Unpacking initramfs...
[ 0.914392] Initramfs unpacking failed: junk in compressed archive
[ 0.914392] Initramfs unpacking failed: junk in compressed archive
[ 0.931236] BUG: unable to handle kernel
[ 0.931236] BUG: unable to handle kernel NULL pointer dereferenceNULL pointer dereference at 00000008
at 00000008
[ 0.933143] IP:
[ 0.933143] IP: [<d1eba850>] __lock_acquire+0x5f0/0x1b90
[<d1eba850>] __lock_acquire+0x5f0/0x1b90
[ 0.934559] *pdpt = 0000000000000000
[ 0.934559] *pdpt = 0000000000000000 *pde = f000ff53f000ff53 *pde = f000ff53f000ff53
[ 0.936088] Oops: 0000 [#1]
[ 0.936088] Oops: 0000 [#1] SMP SMP
[ 0.936976] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.12.0-rc4-00007-g6145cfe #1
[ 0.936976] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.12.0-rc4-00007-g6145cfe #1
[ 0.938910] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[ 0.938910] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[ 0.939584] task: c008c440 ti: c001c000 task.ti: c001c000
[ 0.939584] task: c008c440 ti: c001c000 task.ti: c001c000
[ 0.939584] EIP: 0060:[<d1eba850>] EFLAGS: 00010086 CPU: 0
[ 0.939584] EIP: 0060:[<d1eba850>] EFLAGS: 00010086 CPU: 0
[ 0.939584] EIP is at __lock_acquire+0x5f0/0x1b90
[ 0.939584] EIP is at __lock_acquire+0x5f0/0x1b90
[ 0.939584] EAX: 00000000 EBX: 00000046 ECX: 00000046 EDX: fffffffc
[ 0.939584] EAX: 00000000 EBX: 00000046 ECX: 00000046 EDX: fffffffc
[ 0.939584] ESI: d28307f0 EDI: 00000000 EBP: c001de18 ESP: c001ddac
[ 0.939584] ESI: d28307f0 EDI: 00000000 EBP: c001de18 ESP: c001ddac
[ 0.939584] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 0.939584] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 0.939584] CR0: 8005003b CR2: 00000008 CR3: 12601000 CR4: 000006b0
[ 0.939584] CR0: 8005003b CR2: 00000008 CR3: 12601000 CR4: 000006b0
[ 0.939584] Stack:
[ 0.939584] Stack:
[ 0.939584] c001dde4
[ 0.939584] c001dde4 00000000 00000000 00000000 00000000 c008c440 c008c440 00000000 00000000 00000000 00000000 c008c440 c008c440 d1f1b2da d1f1b2da
git bisect start v3.14 v3.13 --
git bisect bad 494479038d97f1b9f76fc633a360a681acdf035c # 14:20 68- 5 Merge tag 'pinctrl-v3.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
git bisect bad 1b17366d695c8ab03f98d0155357e97a427e1dce # 14:27 98- 5 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
git bisect bad 60eaa0190f6b39dce18eb1975d9773ed8bc9a534 # 14:31 40- 3 Merge tag 'trace-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
git bisect good 74e8ee8262c3f93bbc41804037b43f07b95897bb # 14:41 900+ 0 Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect bad 02d0a752460ea5dab34ce36c9ddc9c682e846a0d # 14:51 373- 6 Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
git bisect bad 82b51734b4f228c76b6064b6e899d9d3d4c17c1a # 19:39 140- 2 Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
git bisect bad f4bcd8ccddb02833340652e9f46f5127828eb79d # 19:59 312- 10 Merge branch 'x86-kaslr-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good fab5669d556200c4dd119af705bff14085845d1e # 20:23 900+ 0 Merge branch 'x86-ras-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good 7fe67a1180db49d41a3f764c379a08f8e31580ec # 20:44 900+ 0 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect bad 6145cfe394a7f138f6b64491c5663f97dba12450 # 20:58 481- 10 x86, kaslr: Raise the maximum virtual address to -1 GiB on x86_64
git bisect good 8ab3820fd5b2896d66da7bb2a906bc382e63e7bc # 21:12 900+ 0 x86, kaslr: Return location from decompress_kernel
git bisect good 82fa9637a2ba285bcc7c5050c73010b2c1b3d803 # 21:34 900+ 0 x86, kaslr: Select random position from e820 maps
git bisect good f32360ef6608434a032dc7ad262d45e9693c27f3 # 21:49 900+ 0 x86, kaslr: Report kernel offset on panic
# first bad commit: [6145cfe394a7f138f6b64491c5663f97dba12450] x86, kaslr: Raise the maximum virtual address to -1 GiB on x86_64
git bisect good f32360ef6608434a032dc7ad262d45e9693c27f3 # 21:52 1000+ 0 x86, kaslr: Report kernel offset on panic
git bisect bad bb62c798798659624c53e3727bbc18cf47eb7ae8 # 21:53 0- 10 Add linux-next specific files for 20140704
git bisect bad 77c4cf17ae867ba93233b3832bda3de7adaae326 # 21:56 24- 2 Merge tag 'md/3.16-fixes' of git://neil.brown.name/md
git bisect bad bb62c798798659624c53e3727bbc18cf47eb7ae8 # 21:56 0- 10 Add linux-next specific files for 20140704
This script may reproduce the error.
-----------------------------------------------------------------------------
#!/bin/bash
kernel=$1
kvm=(
-kernel $kernel
-smp 2
-m 256M
-net nic,vlan=0,macaddr=00:00:00:00:00:00,model=virtio
-net user,vlan=0
-net nic,vlan=1,model=e1000
-net user,vlan=1
-boot order=nc
-no-reboot
-watchdog i6300esb
-serial stdio
-display none
-monitor null
)
append=(
debug
sched_debug
apic=debug
ignore_loglevel
sysrq_always_enabled
panic=10
prompt_ramdisk=0
earlyprintk=ttyS0,115200
console=ttyS0,115200
console=tty0
vga=normal
root=/dev/ram0
rw
)
"${kvm[@]}" --append "${append[*]}"
-----------------------------------------------------------------------------
All the dmesg oops lines are:
dmesg-quantal-ivb42-23:20140705205649:i386-randconfig-ib0-07051041::
[ 0.985813] Initramfs unpacking failed: junk in compressed archive
[ 0.985813] Initramfs unpacking failed: junk in compressed archive
BUG: kernel boot crashed
dmesg-quantal-ivb42-24:20140705205832:i386-randconfig-ib0-07051041::
[ 1.020661] Unpacking initramfs...
[ 1.023821] Initramfs unpacking failed: junk in compressed archive
[ 1.023821] Initramfs unpacking failed: junk in compressed archive
[ 1.040928] BUG: unable to handle kernel
[ 1.040928] BUG: unable to handle kernel NULL pointer dereferenceNULL pointer dereference at 00000008
at 00000008
[ 1.042822] IP:
[ 1.042822] IP: [<d1eba850>] __lock_acquire+0x5f0/0x1b90
[<d1eba850>] __lock_acquire+0x5f0/0x1b90
[ 1.044206] *pdpt = 0000000000000000
[ 1.044206] *pdpt = 0000000000000000 *pde = f000ff53f000ff53 *pde = f000ff53f000ff53
[ 1.045723] Oops: 0000 [#1]
[ 1.045723] Oops: 0000 [#1] SMP SMP
[ 1.046603] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.12.0-rc4-00007-g6145cfe #1
[ 1.046603] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.12.0-rc4-00007-g6145cfe #1
[ 1.048483] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[ 1.048483] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[ 1.049412] task: c008c440 ti: c001c000 task.ti: c001c000
[ 1.049412] task: c008c440 ti: c001c000 task.ti: c001c000
[ 1.049412] EIP: 0060:[<d1eba850>] EFLAGS: 00010086 CPU: 0
[ 1.049412] EIP: 0060:[<d1eba850>] EFLAGS: 00010086 CPU: 0
[ 1.049412] EIP is at __lock_acquire+0x5f0/0x1b90
[ 1.049412] EIP is at __lock_acquire+0x5f0/0x1b90
[ 1.049412] EAX: 00000000 EBX: 00000046 ECX: 00000046 EDX: fffffffc
[ 1.049412] EAX: 00000000 EBX: 00000046 ECX: 00000046 EDX: fffffffc
[ 1.049412] ESI: d28307f0 EDI: 00000000 EBP: c001de18 ESP: c001ddac
[ 1.049412] ESI: d28307f0 EDI: 00000000 EBP: c001de18 ESP: c001ddac
[ 1.049412] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 1.049412] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 1.049412] CR0: 8005003b CR2: 00000008 CR3: 12601000 CR4: 000006b0
[ 1.049412] CR0: 8005003b CR2: 00000008 CR3: 12601000 CR4: 000006b0
[ 1.049412] Stack:
[ 1.049412] Stack:
[ 1.049412] c001dde4
[ 1.049412] c001dde4 00000000 00000000 00000000 00000000 c008c440 c008c440 00000000 00000000 00000000 00000000 c008c440 c008c440 d1f1b2da d1f1b2da
dmesg-quantal-ivb42-65:20140705205521:i386-randconfig-ib0-07051041::
[ 1.042370] Initramfs unpacking failed: junk in compressed archive
[ 1.042370] Initramfs unpacking failed: junk in compressed archive
BUG: kernel boot crashed
dmesg-quantal-ivb42-73:20140705205642:i386-randconfig-ib0-07051041::
[ 1.035555] Initramfs unpacking failed: junk in compressed archive
[ 1.035555] Initramfs unpacking failed: junk in compressed archive
BUG: kernel boot crashed
dmesg-quantal-ivb42-7:20140705205447:i386-randconfig-ib0-07051041::
[ 1.004762] Initramfs unpacking failed: junk in compressed archive
[ 1.004762] Initramfs unpacking failed: junk in compressed archive
BUG: kernel boot crashed
dmesg-quantal-lkp-sbx04-103:20140705210037:i386-randconfig-ib0-07051041::
[ 0.999757] Initramfs unpacking failed: junk in compressed archive
[ 0.999757] Initramfs unpacking failed: junk in compressed archive
BUG: kernel boot crashed
dmesg-quantal-lkp-sbx04-107:20140705205450:i386-randconfig-ib0-07051041::
[ 0.488290] Initramfs unpacking failed: junk in compressed archive
[ 0.488290] Initramfs unpacking failed: junk in compressed archive
BUG: kernel boot crashed
dmesg-quantal-lkp-sbx04-11:20140705205553:i386-randconfig-ib0-07051041::
[ 0.702863] Initramfs unpacking failed: junk in compressed archive
[ 0.702863] Initramfs unpacking failed: junk in compressed archive
BUG: kernel boot crashed
dmesg-quantal-lkp-sbx04-11:20140705205829:i386-randconfig-ib0-07051041::
[ 0.872713] Unpacking initramfs...
[ 0.875984] Initramfs unpacking failed: junk in compressed archive
[ 0.875984] Initramfs unpacking failed: junk in compressed archive
[ 0.879520] BUG: unable to handle kernel
[ 0.879520] BUG: unable to handle kernel NULL pointer dereferenceNULL pointer dereference at 00000008
at 00000008
[ 0.881470] IP:
[ 0.881470] IP: [<d1eba850>] __lock_acquire+0x5f0/0x1b90
[<d1eba850>] __lock_acquire+0x5f0/0x1b90
[ 0.881470] *pdpt = 0000000000000000
[ 0.881470] *pdpt = 0000000000000000 *pde = f000ff53f000ff53 *pde = f000ff53f000ff53
[ 0.881470] Oops: 0000 [#1]
[ 0.881470] Oops: 0000 [#1] SMP SMP
[ 0.881470] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.12.0-rc4-00007-g6145cfe #1
[ 0.881470] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.12.0-rc4-00007-g6145cfe #1
[ 0.881470] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[ 0.881470] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[ 0.881470] task: c008c440 ti: c001c000 task.ti: c001c000
[ 0.881470] task: c008c440 ti: c001c000 task.ti: c001c000
[ 0.881470] EIP: 0060:[<d1eba850>] EFLAGS: 00010082 CPU: 0
[ 0.881470] EIP: 0060:[<d1eba850>] EFLAGS: 00010082 CPU: 0
[ 0.881470] EIP is at __lock_acquire+0x5f0/0x1b90
[ 0.881470] EIP is at __lock_acquire+0x5f0/0x1b90
[ 0.881470] EAX: 00000000 EBX: 0000000d ECX: 0000000d EDX: fffffffc
[ 0.881470] EAX: 00000000 EBX: 0000000d ECX: 0000000d EDX: fffffffc
[ 0.881470] ESI: d2829370 EDI: 00000000 EBP: c001ddac ESP: c001dd40
[ 0.881470] ESI: d2829370 EDI: 00000000 EBP: c001ddac ESP: c001dd40
[ 0.881470] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 0.881470] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 0.881470] CR0: 8005003b CR2: 00000008 CR3: 12601000 CR4: 000006b0
[ 0.881470] CR0: 8005003b CR2: 00000008 CR3: 12601000 CR4: 000006b0
[ 0.881470] Stack:
[ 0.881470] Stack:
[ 0.881470] c001de30
[ 0.881470] c001de30 d1e4a25a d1e4a25a 00000000 00000000 00000001 00000001 d24c0000 d24c0000 80000000 80000000 000001e3 000001e3 d3c00000 d3c00000
dmesg-quantal-lkp-sbx04-31:20140705210238:i386-randconfig-ib0-07051041::
[ 0.910849] Unpacking initramfs...
[ 0.914392] Initramfs unpacking failed: junk in compressed archive
[ 0.914392] Initramfs unpacking failed: junk in compressed archive
[ 0.931236] BUG: unable to handle kernel
[ 0.931236] BUG: unable to handle kernel NULL pointer dereferenceNULL pointer dereference at 00000008
at 00000008
[ 0.933143] IP:
[ 0.933143] IP: [<d1eba850>] __lock_acquire+0x5f0/0x1b90
[<d1eba850>] __lock_acquire+0x5f0/0x1b90
[ 0.934559] *pdpt = 0000000000000000
[ 0.934559] *pdpt = 0000000000000000 *pde = f000ff53f000ff53 *pde = f000ff53f000ff53
[ 0.936088] Oops: 0000 [#1]
[ 0.936088] Oops: 0000 [#1] SMP SMP
[ 0.936976] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.12.0-rc4-00007-g6145cfe #1
[ 0.936976] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.12.0-rc4-00007-g6145cfe #1
[ 0.938910] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[ 0.938910] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[ 0.939584] task: c008c440 ti: c001c000 task.ti: c001c000
[ 0.939584] task: c008c440 ti: c001c000 task.ti: c001c000
[ 0.939584] EIP: 0060:[<d1eba850>] EFLAGS: 00010086 CPU: 0
[ 0.939584] EIP: 0060:[<d1eba850>] EFLAGS: 00010086 CPU: 0
[ 0.939584] EIP is at __lock_acquire+0x5f0/0x1b90
[ 0.939584] EIP is at __lock_acquire+0x5f0/0x1b90
[ 0.939584] EAX: 00000000 EBX: 00000046 ECX: 00000046 EDX: fffffffc
[ 0.939584] EAX: 00000000 EBX: 00000046 ECX: 00000046 EDX: fffffffc
[ 0.939584] ESI: d28307f0 EDI: 00000000 EBP: c001de18 ESP: c001ddac
[ 0.939584] ESI: d28307f0 EDI: 00000000 EBP: c001de18 ESP: c001ddac
[ 0.939584] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 0.939584] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 0.939584] CR0: 8005003b CR2: 00000008 CR3: 12601000 CR4: 000006b0
[ 0.939584] CR0: 8005003b CR2: 00000008 CR3: 12601000 CR4: 000006b0
[ 0.939584] Stack:
[ 0.939584] Stack:
[ 0.939584] c001dde4
[ 0.939584] c001dde4 00000000 00000000 00000000 00000000 c008c440 c008c440 00000000 00000000 00000000 00000000 c008c440 c008c440 d1f1b2da d1f1b2da
dmesg-quantal-lkp-sbx04-93:20140705205954:i386-randconfig-ib0-07051041::
[ 0.736942] Initramfs unpacking failed: junk in compressed archive
[ 0.736942] Initramfs unpacking failed: junk in compressed archive
BUG: kernel boot crashed
dmesg-yocto-ivb42-39:20140705210610:i386-randconfig-ib0-07051041::
Decompressing Linux... Parsing ELF... Performing relocations... done.
Booting the kernel.
BUG: kernel boot hang
dmesg-yocto-lkp-sbx04-13:20140705205527:i386-randconfig-ib0-07051041::
[ 0.000000] low ram: 0 - 14012000
[ 0.000000] kvm-clock: Using msrs 4b564d01 and 4b564d00
[ 0.000000] kvm-clock: cpu 0, msr 0:14010001, boot clock
[ 0.000000] BUG: Int 0: CR2 (null)
[ 0.000000] EDI (null) ESI (null) EBP d36c1f10 EBX d4010000
[ 0.000000] ESP d36c1f04 ES 0000007b DS 0000007b
[ 0.000000] EDX (null) ECX (null) EAX 000f4240
[ 0.000000] vec (null) err (null) EIP d304502e CS 00000060 flg 00210046
[ 0.000000] Stack: 14010000 d36c1f40 d4011000 d36c1f18 d30441e2 d36c1f50 d37745b7 00001000
[ 0.000000] (null) 4b564d00 0100007b (null) (null) (null) 564b4d56 0000004d
[ 0.000000] d36c1fac d36c1fb4 (null) d36c1fc8 d3767a97 d36c1fac d36c1fb4 (null)
[ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.12.0-rc4-00007-g6145cfe #1
[ 0.000000] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[ 0.000000] 00000000 00000000 d36c1eb4 d346d181 d4010000 d36c1f10 d37601d1 d37d2b89
[ 0.000000] 00000000 00000000 00000000 00000000 d36c1f10 d4010000 d36c1f04 0000007b
[ 0.000000] 0000007b 00000000 00000000 000f4240 00000000 00000000 d304502e 00000060
[ 0.000000] Call Trace:
[ 0.000000] [<d346d181>] dump_stack+0x4b/0x66
[ 0.000000] [<d37601d1>] early_idt_handler+0x65/0x65
[ 0.000000] [<d304502e>] ? pvclock_tsc_khz+0x1e/0x60
[ 0.000000] [<d30441e2>] kvm_get_tsc_khz+0x22/0x30
[ 0.000000] [<d37745b7>] kvmclock_init+0x214/0x2a2
[ 0.000000] [<d3767a97>] setup_arch+0xd45/0xe20
[ 0.000000] [<d30a331c>] ? vprintk_emit+0x29c/0x5e0
[ 0.000000] [<d3760793>] start_kernel+0x86/0x449
[ 0.000000] [<d37603d1>] ? reserve_ebda_region+0x63/0x68
[ 0.000000] [<d376036b>] i386_start_kernel+0x12e/0x131
dmesg-yocto-lkp-sbx04-2:20140705205728:i386-randconfig-ib0-07051041::
[ 0.000000] low ram: 0 - 14012000
[ 0.000000] kvm-clock: Using msrs 4b564d01 and 4b564d00
[ 0.000000] kvm-clock: cpu 0, msr 0:14010001, boot clock
[ 0.000000] BUG: Int 0: CR2 (null)
[ 0.000000] EDI (null) ESI (null) EBP d36c1f10 EBX d4010000
[ 0.000000] ESP d36c1f04 ES 0000007b DS 0000007b
[ 0.000000] EDX (null) ECX (null) EAX 000f4240
[ 0.000000] vec (null) err (null) EIP d304502e CS 00000060 flg 00210046
[ 0.000000] Stack: 14010000 d36c1f40 d4011000 d36c1f18 d30441e2 d36c1f50 d37745b7 00001000
[ 0.000000] (null) 4b564d00 0100007b (null) (null) (null) 564b4d56 0000004d
[ 0.000000] d36c1fac d36c1fb4 (null) d36c1fc8 d3767a97 d36c1fac d36c1fb4 (null)
[ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.12.0-rc4-00007-g6145cfe #1
[ 0.000000] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[ 0.000000] 00000000 00000000 d36c1eb4 d346d181 d4010000 d36c1f10 d37601d1 d37d2b89
[ 0.000000] 00000000 00000000 00000000 00000000 d36c1f10 d4010000 d36c1f04 0000007b
[ 0.000000] 0000007b 00000000 00000000 000f4240 00000000 00000000 d304502e 00000060
[ 0.000000] Call Trace:
[ 0.000000] [<d346d181>] dump_stack+0x4b/0x66
[ 0.000000] [<d37601d1>] early_idt_handler+0x65/0x65
[ 0.000000] [<d304502e>] ? pvclock_tsc_khz+0x1e/0x60
[ 0.000000] [<d30441e2>] kvm_get_tsc_khz+0x22/0x30
[ 0.000000] [<d37745b7>] kvmclock_init+0x214/0x2a2
[ 0.000000] [<d3767a97>] setup_arch+0xd45/0xe20
[ 0.000000] [<d30a331c>] ? vprintk_emit+0x29c/0x5e0
[ 0.000000] [<d3760793>] start_kernel+0x86/0x449
[ 0.000000] [<d37603d1>] ? reserve_ebda_region+0x63/0x68
[ 0.000000] [<d376036b>] i386_start_kernel+0x12e/0x131
dmesg-yocto-lkp-sbx04-69:20140705205858:i386-randconfig-ib0-07051041::
[ 0.000000] low ram: 0 - 14012000
[ 0.000000] kvm-clock: Using msrs 4b564d01 and 4b564d00
[ 0.000000] kvm-clock: cpu 0, msr 0:14010001, boot clock
[ 0.000000] BUG: Int 0: CR2 (null)
[ 0.000000] EDI (null) ESI (null) EBP d36c1f10 EBX d4010000
[ 0.000000] ESP d36c1f04 ES 0000007b DS 0000007b
[ 0.000000] EDX (null) ECX (null) EAX 000f4240
[ 0.000000] vec (null) err (null) EIP d304502e CS 00000060 flg 00210046
[ 0.000000] Stack: 14010000 d36c1f40 d4011000 d36c1f18 d30441e2 d36c1f50 d37745b7 00001000
[ 0.000000] (null) 4b564d00 0100007b (null) (null) (null) 564b4d56 0000004d
[ 0.000000] d36c1fac d36c1fb4 (null) d36c1fc8 d3767a97 d36c1fac d36c1fb4 (null)
[ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.12.0-rc4-00007-g6145cfe #1
[ 0.000000] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[ 0.000000] 00000000 00000000 d36c1eb4 d346d181 d4010000 d36c1f10 d37601d1 d37d2b89
[ 0.000000] 00000000 00000000 00000000 00000000 d36c1f10 d4010000 d36c1f04 0000007b
[ 0.000000] 0000007b 00000000 00000000 000f4240 00000000 00000000 d304502e 00000060
[ 0.000000] Call Trace:
[ 0.000000] [<d346d181>] dump_stack+0x4b/0x66
[ 0.000000] [<d37601d1>] early_idt_handler+0x65/0x65
[ 0.000000] [<d304502e>] ? pvclock_tsc_khz+0x1e/0x60
[ 0.000000] [<d30441e2>] kvm_get_tsc_khz+0x22/0x30
[ 0.000000] [<d37745b7>] kvmclock_init+0x214/0x2a2
[ 0.000000] [<d3767a97>] setup_arch+0xd45/0xe20
[ 0.000000] [<d30a331c>] ? vprintk_emit+0x29c/0x5e0
[ 0.000000] [<d3760793>] start_kernel+0x86/0x449
[ 0.000000] [<d37603d1>] ? reserve_ebda_region+0x63/0x68
[ 0.000000] [<d376036b>] i386_start_kernel+0x12e/0x131
Thanks,
Fengguang
_______________________________________________
LKP mailing list
LKP(a)linux.intel.com
8 years, 1 month
- 3
- 2
[pci] BUG: unable to handle kernel NULL pointer dereference at 00000064
by Jet Chen
Hi Liviu,
0day kernel testing robot got the below dmesg and the first bad commit is
git://git.linaro.org/people/cdall/linux-kvm-arm apm_linux_v3.16-rc1
commit 6f99bc949b1c90ff342a7d44ac4122322a7ccb78
Author: Liviu Dudau <Liviu.Dudau(a)arm.com>
AuthorDate: Thu Jun 5 15:20:38 2014 +0530
Commit: Christoffer Dall <christoffer.dall(a)linaro.org>
CommitDate: Fri Jul 11 06:34:50 2014 -0700
pci: Create pci_host_bridge before its associated bus in pci_create_root_bus.
Before commit 7b5436635800 the pci_host_bridge was created before the root bus.
As that commit has added a needless dependency on the bus for pci_alloc_host_bridge()
the creation order has been changed for no good reason. Revert the order of
creation as we are going to depend on the pci_host_bridge structure to retrieve the
domain number of the root bus.
Signed-off-by: Liviu Dudau <Liviu.Dudau(a)arm.com>
Acked-by: Grant Likely <grant.likely(a)linaro.org>
Tested-by: Tanmay Inamdar <tinamdar(a)apm.com>
+------------------------------------------------------------+------------+------------+
| | 175e014331 | 6f99bc949b |
+------------------------------------------------------------+------------+------------+
| boot_successes | 60 | 0 |
| boot_failures | 0 | 20 |
| BUG:unable_to_handle_kernel_NULL_pointer_dereference | 0 | 20 |
| Oops | 0 | 20 |
| EIP_is_at_pcibios_root_bridge_prepare | 0 | 20 |
| WARNING:CPU:PID:at_kernel/smp.c:smp_call_function_single() | 0 | 20 |
| Kernel_panic-not_syncing:Attempted_to_kill_init_exitcode= | 0 | 20 |
| backtrace:acpi_bus_scan | 0 | 20 |
| backtrace:acpi_scan_init | 0 | 20 |
| backtrace:acpi_init | 0 | 20 |
| backtrace:kernel_init_freeable | 0 | 20 |
+------------------------------------------------------------+------------+------------+
[ 0.351550] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
[ 0.352949] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments]
[ 0.353402] acpi PNP0A03:00: _OSC failed (AE_NOT_FOUND); disabling ASPM
[ 0.355122] BUG: unable to handle kernel NULL pointer dereference at 00000064
[ 0.356666] IP: [<c17b762e>] pcibios_root_bridge_prepare+0xe/0x20
[ 0.356666] *pde = 00000000 [ 0.356666] Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
[ 0.356666] Modules linked in:
[ 0.356666] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.16.0-rc1-00005-g6f99bc9 #2
[ 0.356666] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[ 0.356666] task: cfc7e010 ti: cfcc0000 task.ti: cfcc0000
[ 0.356666] EIP: 0060:[<c17b762e>] EFLAGS: 00010286 CPU: 0
[ 0.356666] EIP is at pcibios_root_bridge_prepare+0xe/0x20
[ 0.356666] EAX: cfe0a000 EBX: c1d83d20 ECX: 00000000 EDX: 00000000
[ 0.356666] ESI: 00000000 EDI: cfe0a000 EBP: cfcc1d20 ESP: cfcc1d20
[ 0.356666] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 0.356666] CR0: 8005003b CR2: 00000064 CR3: 01e77000 CR4: 000006d0
[ 0.356666] Stack:
[ 0.356666] cfcc1da4 c13d7a8b cfcc1dd4 cfe56e00 cfcc1dd4 cfe56d40 cfcc1dd4 cfc00180
[ 0.356666] cfcc1d88 c11a77d2 cfe0a184 00000001 00000000 00000000 c1093cf9 00000246
[ 0.356666] 000080d0 00000282 00000010 000080d0 00000020 00000246 c13d5a48 cfcc1dd4
[ 0.356666] Call Trace:
[ 0.356666] [<c13d7a8b>] pci_create_root_bus+0x5b/0x340
[ 0.356666] [<c11a77d2>] ? kmem_cache_alloc_trace+0x3a2/0x4b0
[ 0.356666] [<c1093cf9>] ? insert_resource_conflict+0x19/0x40
[ 0.356666] [<c13d5a48>] ? pci_add_resource_offset+0x28/0x60
[ 0.356666] [<c13d5a48>] ? pci_add_resource_offset+0x28/0x60
[ 0.356666] [<c17b750b>] pci_acpi_scan_root+0x25b/0x370
[ 0.356666] [<c1401686>] acpi_pci_root_add+0x223/0x2c9
[ 0.356666] [<c13fc8ed>] ? acpi_bus_get_status_handle+0x18/0x3a
[ 0.356666] [<c13fedb3>] acpi_bus_attach+0xb5/0x160
[ 0.356666] [<c195d60d>] ? mutex_unlock+0xd/0x10
[ 0.356666] [<c1474b9c>] ? device_attach+0x8c/0xa0
[ 0.356666] [<c13fee1c>] acpi_bus_attach+0x11e/0x160
[ 0.356666] [<c195d60d>] ? mutex_unlock+0xd/0x10
[ 0.356666] [<c1474b9c>] ? device_attach+0x8c/0xa0
[ 0.356666] [<c13fee1c>] acpi_bus_attach+0x11e/0x160
[ 0.356666] [<c13feea7>] acpi_bus_scan+0x49/0x59
[ 0.356666] [<c1ddfa74>] acpi_scan_init+0x5b/0x16b
[ 0.356666] [<c1ddf8cc>] acpi_init+0x205/0x220
[ 0.356666] [<c1ddf6c7>] ? acpi_sleep_proc_init+0x23/0x23
[ 0.356666] [<c100044e>] do_one_initcall+0x7e/0x1b0
[ 0.356666] [<c1ddf6c7>] ? acpi_sleep_proc_init+0x23/0x23
[ 0.356666] [<c1da7500>] ? initcall_blacklist+0x23/0x81
[ 0.356666] [<c10ae039>] ? parse_args+0x1d9/0x360
[ 0.356666] [<c10a5361>] ? __usermodehelper_set_disable_depth+0x41/0x50
[ 0.356666] [<c1da7d9c>] kernel_init_freeable+0x1b2/0x249
[ 0.356666] [<c1da755e>] ? initcall_blacklist+0x81/0x81
[ 0.356666] [<c194b840>] kernel_init+0x10/0xe0
[ 0.356666] [<c195f681>] ret_from_kernel_thread+0x21/0x30
[ 0.356666] [<c194b830>] ? rest_init+0x130/0x130
[ 0.356666] Code: 8b 45 e0 89 44 24 04 e8 26 ab 19 00 31 c0 e9 8f fd ff ff 8d 76 00 8d bc 27 00 00 00 00 55 89 e5 3e 8d 74 26 00 8b 90 80 01 00 00 <8b> 52 64 8b 52 08 89 90 28 01 00 00 31 c0 5d c3 66 90 55 89 e5
[ 0.356666] EIP: [<c17b762e>] pcibios_root_bridge_prepare+0xe/0x20 SS:ESP 0068:cfcc1d20
[ 0.356666] CR2: 0000000000000064
[ 0.356666] ---[ end trace 849b10f6fad5eb6f ]---
[ 0.356666] ------------[ cut here ]------------
git bisect start 263df82c9fb5fc5b3504d294f7ab813c274bf1d1 7171511eaec5bf23fb06078f59784a3a0626b38f --
git bisect bad 56485a95d9ffdb6b431ea00171e320112a992b40 # 01:09 0- 9 rtc: Fix suspend/resume for APM X-Gene SoC RTC driver
git bisect bad 2a146bde9a2b55d8d9e98a1f4b72ca694aa67879 # 01:22 0- 19 dt-bindings: pci: xgene pcie device tree bindings
git bisect bad 6f99bc949b1c90ff342a7d44ac4122322a7ccb78 # 02:11 0- 1 pci: Create pci_host_bridge before its associated bus in pci_create_root_bus.
git bisect good d1eee6a841dd73ecd3cce0e70686152cc5789c91 # 02:14 20+ 0 arm64: Add architecture support for PCI
git bisect good ab84a1c5bef2092f87cf22239df5592c68a83978 # 02:17 20+ 0 pci: Introduce pci_register_io_range() helper function.
git bisect good 175e0143313927c52fd7b6b5b66c202e3d6ab31c # 02:39 20+ 0 pci: OF: Fix the conversion of IO ranges into IO resources.
# first bad commit: [6f99bc949b1c90ff342a7d44ac4122322a7ccb78] pci: Create pci_host_bridge before its associated bus in pci_create_root_bus.
git bisect good 175e0143313927c52fd7b6b5b66c202e3d6ab31c # 02:40 60+ 0 pci: OF: Fix the conversion of IO ranges into IO resources.
git bisect bad 263df82c9fb5fc5b3504d294f7ab813c274bf1d1 # 02:40 0- 11 arm64: Add defconfig and dts for Xen on APM X-Gene Mustang board
git bisect good 67b9d76f9e2f9f87f94a11521cc996dc2e43ce14 # 02:45 60+ 0 Merge tag 'dm-3.16-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
git bisect good b7079aa6ab3e23d080fa9b79d7f414d8287c32b4 # 02:48 60+ 0 Add linux-next specific files for 20140711
This script may reproduce the error.
----------------------------------------------------------------------------
#!/bin/bash
kernel=$1
kvm=(
qemu-system-x86_64
-cpu kvm64
-enable-kvm
-kernel $kernel
-m 320
-smp 2
-net nic,vlan=1,model=e1000
-net user,vlan=1
-boot order=nc
-no-reboot
-watchdog i6300esb
-rtc base=localtime
-serial stdio
-display none
-monitor null )
append=(
hung_task_panic=1
earlyprintk=ttyS0,115200
debug
apic=debug
sysrq_always_enabled
rcupdate.rcu_cpu_stall_timeout=100
panic=10
softlockup_panic=1
nmi_watchdog=panic
prompt_ramdisk=0
console=ttyS0,115200
console=tty0
vga=normal
root=/dev/ram0
rw
drbd.minor_count=8
)
"${kvm[@]}" --append "${append[*]}"
----------------------------------------------------------------------------
Thanks,
Jet
8 years, 1 month
- 2
- 1
[sched] BUG: unable to handle kernel NULL pointer dereference at 0000000000000040
by Aaron Lu
FYI, we noticed the below changes on
git://bee.sh.intel.com/git/ydu19/linux rewrite-v1.1-on-3.16-rc3
commit 69b181fe34a030a624fc05e7c06f576d20a5b2ce ("sched: Remove update_rq_runnable_avg")
+------------------------------------------------------+-----------+------------+
| | v3.16-rc3 | 69b181fe34 |
+------------------------------------------------------+-----------+------------+
| boot_successes | 3430 | 20 |
| boot_failures | 366 | 6 |
| BUG:kernel_boot_hang | 113 | 2 |
| BUG:kernel_early_hang_without_any_printk_output | 93 | |
| BUG:kernel_test_hang | 9 | |
| Out_of_memory:Kill_process | 15 | |
| backtrace:vfs_write | 1 | 4 |
| backtrace:SyS_write | 1 | 4 |
| page_allocation_failure:order:,mode | 3 | |
| backtrace:do_fork | 7 | |
| backtrace:SyS_clone | 7 | |
| backtrace:do_execve_common | 1 | |
| backtrace:SyS_execve | 1 | |
| backtrace:vm_mmap_pgoff | 1 | |
| backtrace:SyS_mmap_pgoff | 1 | |
| backtrace:SyS_mmap | 1 | |
| BUG:kernel_test_crashed | 3 | |
| BUG:kernel_boot_crashed | 133 | |
| BUG:unable_to_handle_kernel_NULL_pointer_dereference | 0 | 4 |
| Oops | 0 | 4 |
| RIP:print_cfs_group_stats | 0 | 4 |
| kernel_BUG_at_arch/x86/mm/pageattr.c | 0 | 4 |
| invalid_opcode | 0 | 4 |
| RIP:change_page_attr_set_clr | 0 | 4 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 4 |
+------------------------------------------------------+-----------+------------+
[18195.617056] .tg->cfs_bandwidth.timer_active: 0
[18195.617056] .throttled : 0
[18195.617056] .throttle_count : 0
[18195.617056] BUG: unable to handle kernel NULL pointer dereference at 0000000000000040
[18195.617056] IP: [<ffffffff810b706b>] print_cfs_group_stats.isra.0+0x6db/0xad0
[18195.617056] PGD 7f464067 PUD 7f0ef067 PMD 0
[18195.617056] Oops: 0000 [#1] SMP
[18195.617056] Modules linked in: ipmi_watchdog ipmi_msghandler dm_mod fuse sg sr_mod cdrom ata_generic pata_acpi parport_pc parport floppy snd_pcm snd_timer snd soundcore ata_piix pcspkr cirrus libata syscopyarea sysfillrect sysimgblt ttm i2c_piix4 drm_kms_helper drm
[18195.617056] CPU: 2 PID: 1522 Comm: run-lkp Not tainted 3.16.0-rc3-00329-gec43f5a #1
[18195.617056] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[18195.617056] task: ffff88007f5dd850 ti: ffff88007f6dc000 task.ti: ffff88007f6dc000
[18195.617056] RIP: 0010:[<ffffffff810b706b>] [<ffffffff810b706b>] print_cfs_group_stats.isra.0+0x6db/0xad0
[18195.617056] RSP: 0018:ffff88007f6dfd00 EFLAGS: 00010046
[18195.617056] RAX: ffffffff81fe5240 RBX: 0000000000000000 RCX: 0000000000007250
[18195.617056] RDX: ffff880076808000 RSI: 0000000000000000 RDI: 0000000000000000
[18195.617056] RBP: ffff88007f6dfd10 R08: 0000000000000092 R09: 000000000000037a
[18195.617056] R10: 0000000000000080 R11: 0000000000000002 R12: 0000000000000000
[18195.617056] R13: ffff880076e14880 R14: 0000027f6567ae6d R15: 0000000000000000
[18195.617056] FS: 00007f3479d82700(0000) GS:ffff880076f00000(0000) knlGS:0000000000000000
[18195.617056] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[18195.617056] CR2: 0000000000000040 CR3: 000000007e0c4000 CR4: 00000000000006e0
[18195.617056] Stack:
[18195.617056] 0000000000000000 ffff880076e14900 ffff88007f6dfd78 ffffffff810b8589
[18195.617056] 0000027f6567ae6d 0000000000000086 ffffffffffffffff ffffffffffffffff
[18195.617056] ffffffffffffffff ffffffffffffffff ffff880076e14900 0000000000000000
[18195.617056] Call Trace:
[18195.617056] [<ffffffff810b8589>] print_cfs_rq+0x3c9/0x850
[18195.617056] [<ffffffff810af43e>] print_cfs_stats+0x6e/0xc0
[18195.617056] [<ffffffff810b7800>] print_cpu+0x350/0xce0
[18195.617056] [<ffffffff810b6851>] ? sched_debug_header+0x5a1/0x600
[18195.617056] [<ffffffff810b8cd1>] sysrq_sched_debug_show+0x31/0x60
[18195.617056] [<ffffffff810a0d95>] show_state_filter+0xa5/0xc0
[18195.617056] [<ffffffff814a45c3>] sysrq_handle_showstate_blocked+0x13/0x20
[18195.617056] [<ffffffff814a4d67>] __handle_sysrq+0x117/0x170
[18195.617056] [<ffffffff814a521a>] write_sysrq_trigger+0x4a/0x50
[18195.617056] [<ffffffff8122b5ad>] proc_reg_write+0x3d/0x80
[18195.617056] [<ffffffff811c62c7>] vfs_write+0xb7/0x1f0
[18195.617056] [<ffffffff811c6e66>] SyS_write+0x46/0xb0
[18195.617056] [<ffffffff81832ba9>] system_call_fastpath+0x16/0x1b
[18195.617056] Code: d7 82 de 1b 43 4c 89 c0 48 f7 e1 48 89 d0 48 89 d1 48 c1 e8 12 48 c1 e9 12 48 69 c0 40 42 0f 00 48 f7 d9 49 29 c0 e9 c8 f9 ff ff <49> 8b 44 24 40 48 85 c0 0f 88 c3 02 00 00 be 40 42 0f 00 31 d2
[18195.617056] RIP [<ffffffff810b706b>] print_cfs_group_stats.isra.0+0x6db/0xad0
[18195.617056] RSP <ffff88007f6dfd00>
[18195.617056] CR2: 0000000000000040
[18195.617056] ------------[ cut here ]------------
[18195.617056] kernel BUG at arch/x86/mm/pageattr.c:216!
[18195.617056] invalid opcode: 0000 [#2] SMP
[18195.617056] Modules linked in: ipmi_watchdog ipmi_msghandler dm_mod fuse sg sr_mod cdrom ata_generic pata_acpi parport_pc parport floppy snd_pcm snd_timer snd soundcore ata_piix pcspkr cirrus libata syscopyarea sysfillrect sysimgblt ttm i2c_piix4 drm_kms_helper drm
[18195.617056] CPU: 2 PID: 1522 Comm: run-lkp Not tainted 3.16.0-rc3-00329-gec43f5a #1
[18195.617056] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[18195.617056] task: ffff88007f5dd850 ti: ffff88007f6dc000 task.ti: ffff88007f6dc000
[18195.617056] RIP: 0010:[<ffffffff8105bbd3>] [<ffffffff8105bbd3>] change_page_attr_set_clr+0x433/0x440
[18195.617056] RSP: 0018:ffff88007f6df068 EFLAGS: 00010046
[18195.617056] RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000010
[18195.617056] RDX: 0000000000002200 RSI: 0000000000000000 RDI: 0000000080000000
[18195.617056] RBP: ffff88007f6df0f8 R08: 8000000040e8d163 R09: 0000000000040e8d
[18195.617056] R10: ffffea0001fc0200 R11: ffffffff813d9029 R12: 0000000000000000
[18195.617056] R13: 0000000000000010 R14: 0000000000000004 R15: 0000000000000005
[18195.617056] FS: 00007f3479d82700(0000) GS:ffff880076f00000(0000) knlGS:0000000000000000
[18195.617056] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[18195.617056] CR2: 0000000000000040 CR3: 000000007e0c4000 CR4: 00000000000006e0
[18195.617056] Stack:
[18195.617056] ffff88007f6df0a8 0000000000000000 0000000000000000 0000000000000200
[18195.617056] 0000000000000008 0000000000000000 0000000000000000 0000000000000010
[18195.617056] 0000000000000000 0000000500000001 0000000000040e8d 0000020000000000
[18195.617056] Call Trace:
[18195.617056] [<ffffffff8105bf26>] _set_pages_array+0xe6/0x130
[18195.617056] [<ffffffff8105bfa3>] set_pages_array_wc+0x13/0x20
[18195.617056] [<ffffffffa008302f>] ttm_set_pages_caching+0x2f/0x70 [ttm]
[18195.617056] [<ffffffffa0083174>] ttm_alloc_new_pages.isra.6+0xb4/0x180 [ttm]
[18195.617056] [<ffffffffa0083a63>] ttm_pool_populate+0x3c3/0x4d0 [ttm]
[18195.617056] [<ffffffffa00e520e>] cirrus_ttm_tt_populate+0xe/0x10 [cirrus]
[18195.617056] [<ffffffffa0080571>] ttm_bo_move_memcpy+0x5d1/0x680 [ttm]
[18195.617056] [<ffffffff8118c59e>] ? map_vm_area+0x2e/0x40
[18195.617056] [<ffffffffa007c289>] ? ttm_tt_init+0x69/0xb0 [ttm]
[18195.617056] [<ffffffffa00e51b8>] cirrus_bo_move+0x18/0x20 [cirrus]
[18195.617056] [<ffffffffa007dd45>] ttm_bo_handle_move_mem+0x265/0x5b0 [ttm]
[18195.617056] [<ffffffffa007e6a6>] ? ttm_bo_mem_space+0x116/0x340 [ttm]
[18195.617056] [<ffffffffa007ed6f>] ttm_bo_validate+0x21f/0x230 [ttm]
[18195.617056] [<ffffffffa00e59a2>] cirrus_bo_push_sysram+0x82/0xe0 [cirrus]
[18195.617056] [<ffffffffa00e3bf5>] cirrus_crtc_do_set_base.isra.8.constprop.10+0x75/0x400 [cirrus]
[18195.617056] [<ffffffffa00e43c9>] cirrus_crtc_mode_set+0x449/0x4d0 [cirrus]
[18195.617056] [<ffffffffa006a8e9>] drm_crtc_helper_set_mode+0x2b9/0x4f0 [drm_kms_helper]
[18195.617056] [<ffffffffa006b66f>] drm_crtc_helper_set_config+0x87f/0xaa0 [drm_kms_helper]
[18195.617056] [<ffffffff818305de>] ? __ww_mutex_lock+0x2e/0xaa
[18195.617056] [<ffffffffa000f2a1>] drm_mode_set_config_internal+0x61/0xe0 [drm]
[18195.617056] [<ffffffffa006e324>] drm_fb_helper_pan_display+0x94/0xf0 [drm_kms_helper]
[18195.617056] [<ffffffff8143d499>] fb_pan_display+0xc9/0x190
[18195.617056] [<ffffffff81437650>] bit_update_start+0x20/0x50
[18195.617056] [<ffffffff81437102>] fbcon_switch+0x3a2/0x550
[18195.617056] [<ffffffff814aec19>] redraw_screen+0x189/0x240
[18195.617056] [<ffffffff8143d80e>] ? fb_blank+0x9e/0xc0
[18195.617056] [<ffffffff8143469a>] fbcon_blank+0x20a/0x2d0
[18195.617056] [<ffffffff810ba9b2>] ? up+0x32/0x50
[18195.617056] [<ffffffff810c79d8>] ? console_unlock+0x1f8/0x440
[18195.617056] [<ffffffff81079133>] ? __internal_add_timer+0x113/0x130
[18195.617056] [<ffffffff8107917f>] ? internal_add_timer+0x2f/0x70
[18195.617056] [<ffffffff8107b1b2>] ? mod_timer+0x142/0x1f0
[18195.617056] [<ffffffff814af738>] do_unblank_screen+0xb8/0x200
[18195.617056] [<ffffffff814af890>] unblank_screen+0x10/0x20
[18195.617056] [<ffffffff813e7d89>] bust_spinlocks+0x19/0x40
[18195.617056] [<ffffffff81017718>] oops_end+0x38/0x150
[18195.617056] [<ffffffff81821839>] no_context+0x2b3/0x2c0
[18195.617056] [<ffffffff81433061>] ? fbcon_clear+0x1b1/0x1f0
[18195.617056] [<ffffffff818218b9>] __bad_area_nosemaphore+0x73/0x1ca
[18195.617056] [<ffffffff81821a23>] bad_area_nosemaphore+0x13/0x15
[18195.617056] [<ffffffff81058c90>] __do_page_fault+0x90/0x550
[18195.617056] [<ffffffff814baddb>] ? wait_for_xmitr+0x3b/0xa0
[18195.617056] [<ffffffff814bafe7>] ? serial8250_console_putchar+0x27/0x30
[18195.617056] [<ffffffff814bafc0>] ? serial8250_console_write+0x180/0x180
[18195.617056] [<ffffffff814baddb>] ? wait_for_xmitr+0x3b/0xa0
[18195.617056] [<ffffffff814baf32>] ? serial8250_console_write+0xf2/0x180
[18195.617056] [<ffffffff81059201>] trace_do_page_fault+0x41/0x130
[18195.617056] [<ffffffff810536b9>] do_async_page_fault+0x29/0xe0
[18195.617056] [<ffffffff81834b88>] async_page_fault+0x28/0x30
[18195.617056] [<ffffffff810b706b>] ? print_cfs_group_stats.isra.0+0x6db/0xad0
[18195.617056] [<ffffffff810b8589>] print_cfs_rq+0x3c9/0x850
[18195.617056] [<ffffffff810af43e>] print_cfs_stats+0x6e/0xc0
[18195.617056] [<ffffffff810b7800>] print_cpu+0x350/0xce0
[18195.617056] [<ffffffff810b6851>] ? sched_debug_header+0x5a1/0x600
[18195.617056] [<ffffffff810b8cd1>] sysrq_sched_debug_show+0x31/0x60
[18195.617056] [<ffffffff810a0d95>] show_state_filter+0xa5/0xc0
[18195.617056] [<ffffffff814a45c3>] sysrq_handle_showstate_blocked+0x13/0x20
[18195.617056] [<ffffffff814a4d67>] __handle_sysrq+0x117/0x170
[18195.617056] [<ffffffff814a521a>] write_sysrq_trigger+0x4a/0x50
[18195.617056] [<ffffffff8122b5ad>] proc_reg_write+0x3d/0x80
[18195.617056] [<ffffffff811c62c7>] vfs_write+0xb7/0x1f0
[18195.617056] [<ffffffff811c6e66>] SyS_write+0x46/0xb0
[18195.617056] [<ffffffff81832ba9>] system_call_fastpath+0x16/0x1b
[18195.617056] Code: ff ff 48 8b 4d 80 e9 9f fc ff ff 0f 0b 0f 0b be ba 00 00 00 48 c7 c7 b8 a0 ae 81 89 4d 80 e8 d5 15 01 00 8b 4d 80 e9 04 ff ff ff <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 66 66 66 66 90 55 48 89
[18195.617056] RIP [<ffffffff8105bbd3>] change_page_attr_set_clr+0x433/0x440
[18195.617056] RSP <ffff88007f6df068>
[18195.617056] ---[ end trace f2721a175d3d926b ]---
[18195.617056] Kernel panic - not syncing: Fatal exception
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
Thanks,
Aaron
8 years, 1 month
- 1
- 0
[sched] 517b8b57fb5: -31.6% cpuidle.C3-NHM.usage
by Aaron Lu
FYI, we noticed the below changes on
git://bee.sh.intel.com/git/ydu19/linux cc-v4.7-on-3.16-rc3
commit 517b8b57fb5e6ceb175439474d4e539dfeb74bfe ("sched: Remove update_rq_runnable_avg")
test case: xps2/pigz/100%-128K
v3.16-rc3 517b8b57fb5e6ceb175439474
--------------- -------------------------
776 ~22% -31.6% 531 ~16% TOTAL cpuidle.C3-NHM.usage
0.26 ~ 5% -25.5% 0.19 ~ 5% TOTAL turbostat.%c6
6904073 ~ 2% -23.4% 5290138 ~ 2% TOTAL cpuidle.C6-NHM.time
7762 ~ 0% +22.1% 9481 ~ 1% TOTAL proc-vmstat.nr_active_anon
31071 ~ 0% +22.1% 37939 ~ 1% TOTAL meminfo.Active(anon)
7847 ~ 0% +21.9% 9563 ~ 1% TOTAL proc-vmstat.nr_anon_pages
31404 ~ 0% +21.9% 38271 ~ 1% TOTAL meminfo.AnonPages
2369 ~ 1% -15.5% 2002 ~ 1% TOTAL proc-vmstat.pgactivate
10420 ~ 2% +16.1% 12102 ~ 0% TOTAL time.maximum_resident_set_size
970 ~ 3% +12.6% 1092 ~ 0% TOTAL slabinfo.kmalloc-96.num_objs
970 ~ 3% +12.6% 1092 ~ 0% TOTAL slabinfo.kmalloc-96.active_objs
4.56 ~ 4% +13.6% 5.18 ~ 8% TOTAL perf-profile.cpu-cycles.copy_user_generic_string.copy_page_from_iter.pipe_write.new_sync_write.vfs_write
108172 ~ 0% +10.4% 119392 ~ 0% TOTAL meminfo.Active
12905 ~ 0% +11.6% 14408 ~ 0% TOTAL time.minor_page_faults
Legend:
~XX% - stddev percent
[+-]XX% - change percent
time.minor_page_faults
15000 ++------------------------------------------------------------------+
O O O |
| O O |
14500 ++ O O O O
| O O O O O |
| |
14000 ++ |
| |
13500 ++ |
| |
| |
13000 ++ ..*.....*.... |
*....*....*.....*....*....*.. *....* |
| |
12500 ++------------------------------------------------------------------+
[*] bisect-good sample
[O] bisect-bad sample
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
Thanks,
Aaron
8 years, 1 month
- 1
- 0
[Implement Workload Consolidation in wakeup/fork/exec] BUG: unable to handle kernel paging request at ffffffffa1d96658
by Aaron Lu
FYI, we noticed the below changes on
git://bee.sh.intel.com/git/ydu19/linux cc-v4.7-on-3.16-rc3
commit 7360e0e63f2f26ad1ea1ff426572a111d3b0747e ("Implement Workload Consolidation in wakeup/fork/exec")
+--------------------------------------------+------------+------------+
| | 3bccbb940e | 7360e0e63f |
+--------------------------------------------+------------+------------+
| boot_successes | 12 | 18 |
| boot_failures | 1 | 7 |
| WARNING:CPU:PID:at_mm/mmap.c:exit_mmap() | 1 | |
| BUG:Bad_rss-counter_state_mm:idx:val | 1 | |
| BUG:unable_to_handle_kernel_paging_request | 0 | 7 |
| Oops | 0 | 7 |
| RIP:wake_up_new_task | 0 | 7 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 7 |
| backtrace:do_fork | 0 | 7 |
| backtrace:SyS_clone | 0 | 7 |
+--------------------------------------------+------------+------------+
run: /lkp/lkp/src/monitors/wrapper cpuidle {}
run: /lkp/lkp/src/monitors/wrapper turbostat {}
run: /usr/bin/time -v -o /lkp/lkp/src/tmp/time /lkp/lkp/src/tests/wrapper will-it-scale {"test"=>"poll1"}
[ 267.494213] BUG: unable to handle kernel paging request at ffffffffa1d96658
[ 267.502616] IP: [<ffffffff810a110d>] wake_up_new_task+0x5d/0x190
[ 267.509874] PGD 1c1c067 PUD 1c1d063 PMD 0
[ 267.515024] Oops: 0000 [#1] SMP
[ 267.519188] Modules linked in: ipmi_watchdog dm_mod fuse sg sr_mod cdrom mgag200 syscopyarea snd_pcm sysfillrect sysimgblt snd_timer ttm snd ahci soundcore drm_kms_helper libahci pcspkr sb_edac libata drm i2c_i801 edac_core wmi ipmi_si ipmi_msghandler
[ 267.545771] CPU: 0 PID: 10268 Comm: poll1_processes Not tainted 3.16.0-rc4-00652-gddbdaf0 #1
[ 267.555975] Hardware name: Intel Corporation LH Pass/S4600LH...., BIOS SE5C600.86B.99.02.1047.032320122259 03/23/2012
[ 267.568659] task: ffff880428dbbb20 ti: ffff88042082c000 task.ti: ffff88042082c000
[ 267.577879] RIP: 0010:[<ffffffff810a110d>] [<ffffffff810a110d>] wake_up_new_task+0x5d/0x190
[ 267.588222] RSP: 0018:ffff88042082fe98 EFLAGS: 00010086
[ 267.595078] RAX: 00000000ffffffff RBX: 00007fffffffc140 RCX: ffffffff81d96660
[ 267.604010] RDX: 00000000ffffffff RSI: 0000000000000000 RDI: 0000000000000080
[ 267.612942] RBP: ffff88042082fec0 R08: ffff880428af7020 R09: 0000000000000002
[ 267.621883] R10: ffff880428aff800 R11: 00000000002ac048 R12: ffff88041e7a9d90
[ 267.630847] R13: 0000000000000000 R14: ffff88041e7aa8d4 R15: 0000000000000246
[ 267.639835] FS: 00007ffff7fe0700(0000) GS:ffff88042fa00000(0000) knlGS:0000000000000000
[ 267.649922] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 267.657410] CR2: ffffffffa1d96658 CR3: 0000000421202000 CR4: 00000000000407f0
[ 267.666487] Stack:
[ 267.669848] 00007fffffffc140 ffff88041e7a9d90 0000000000000000 0000000000000000
[ 267.679326] 000000000000283d ffff88042082ff30 ffffffff8106c34d ffff880428dbbb20
[ 267.688824] 0000000000000000 ffff88007f77e400 ffffffff813dbf79 00007fffffffc310
[ 267.698336] Call Trace:
[ 267.702283] [<ffffffff8106c34d>] do_fork+0x12d/0x3b0
[ 267.709162] [<ffffffff813dbf79>] ? free_cpumask_var+0x9/0x10
[ 267.716831] [<ffffffff8106c656>] SyS_clone+0x16/0x20
[ 267.723741] [<ffffffff81835d09>] stub_clone+0x69/0x90
[ 267.730756] [<ffffffff818359a9>] ? system_call_fastpath+0x16/0x1b
[ 267.738955] Code: c9 4c 89 e7 8b 72 18 ba 08 00 00 00 ff 50 40 89 c2 49 0f a3 94 24 18 03 00 00 19 c9 85 c9 0f 84 1f 01 00 00 48 8b 0d fb 94 7a 00 <48> 0f a3 11 19 d2 85 d2 0f 84 0a 01 00 00 89 c6 4c 89 e7 48 c7
[ 267.763659] RIP [<ffffffff810a110d>] wake_up_new_task+0x5d/0x190
[ 267.771960] RSP <ffff88042082fe98>
[ 267.777351] CR2: ffffffffa1d96658
[ 267.782559] ---[ end trace 64e2f87937629f9b ]---
[ 267.794993] Kernel panic - not syncing: Fatal exception
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
Thanks,
Aaron
8 years, 1 month
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