021e70c3a6 ("treewide: Replace one-element array with .."): BUG: KASAN: slab-out-of-bounds in alloc_pid
by kernel test robot
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git testing/fam1
commit 021e70c3a66ced20bdfa6694d32bbb64bd8c954a
Author: Gustavo A. R. Silva <gustavoars(a)kernel.org>
AuthorDate: Tue May 19 18:32:17 2020 -0500
Commit: Gustavo A. R. Silva <gustavoars(a)kernel.org>
CommitDate: Tue May 19 18:32:17 2020 -0500
treewide: Replace one-element array with flexible-array
The current codebase makes use of one-element arrays in the following
form:
struct something {
int length;
u8 data[1];
};
struct something *instance;
instance = kmalloc(sizeof(*instance) + size, GFP_KERNEL);
instance->length = size;
memcpy(instance->data, source, size);
but the preferred mechanism to declare variable-length types such as
these ones is a flexible array member[1][2], introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavoars(a)kernel.org>
6a8b55ed40 Linux 5.7-rc3
021e70c3a6 treewide: Replace one-element array with flexible-array
ae1a42dc97 ice: Replace one-element arrays with flexible-arrays
+-----------------------------------------------------------+----------+------------+------------+
| | v5.7-rc3 | 021e70c3a6 | ae1a42dc97 |
+-----------------------------------------------------------+----------+------------+------------+
| boot_successes | 36 | 0 | 0 |
| boot_failures | 6 | 15 | 13 |
| Kernel_panic-not_syncing:Attempted_to_kill_init!exitcode= | 5 | | |
| Assertion_failed | 2 | | |
| BUG:kernel_hang_in_boot_stage | 1 | | |
| BUG:KASAN:slab-out-of-bounds_in_a | 0 | 15 | 13 |
+-----------------------------------------------------------+----------+------------+------------+
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <lkp(a)intel.com>
[ 3.729174] Spectre V2 : Spectre mitigation: kernel not compiled with retpoline; no mitigation available!
[ 3.729181] Speculative Store Bypass: Vulnerable
[ 3.731626] MDS: Vulnerable: Clear CPU buffers attempted, no microcode
[ 3.733941] Freeing SMP alternatives memory: 36K
[ 3.735777] ==================================================================
[ 3.737114] BUG: KASAN: slab-out-of-bounds in alloc_pid+0x8db/0xa60
[ 3.738191] Write of size 4 at addr ffff8881f5f720d0 by task swapper/0/0
[ 3.739317]
[ 3.739606] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc3-00001-g021e70c3a66ce #1
[ 3.740976] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 3.742377] Call Trace:
[ 3.742829] dump_stack+0x97/0xe0
[ 3.743412] print_address_description.cold+0xd3/0x342
[ 3.744483] ? alloc_pid+0x8db/0xa60
[ 3.745116] __kasan_report.cold+0x37/0x7d
[ 3.745533] ? alloc_pid+0x8db/0xa60
[ 3.745533] kasan_report+0x4f/0x60
[ 3.745533] alloc_pid+0x8db/0xa60
[ 3.745533] copy_process+0x25cb/0x74e0
[ 3.745533] ? lock_downgrade+0x730/0x730
[ 3.745533] ? _raw_spin_unlock_irqrestore+0x6c/0x90
[ 3.745533] ? __cleanup_sighand+0xb0/0xb0
[ 3.745533] ? sync_exp_work_done+0x1f8/0x280
[ 3.745533] ? synchronize_rcu_expedited+0x7e3/0xd30
[ 3.745533] _do_fork+0xf8/0xb80
[ 3.745533] ? sync_rcu_exp_select_cpus+0xc80/0xc80
[ 3.745533] ? acpi_hw_read+0x273/0x273
[ 3.745533] ? copy_init_mm+0x20/0x20
[ 3.745533] ? acpi_hw_register_read+0xbb/0x201
[ 3.745533] ? acpi_hw_write_pm1_control+0xa4/0xa4
[ 3.745533] kernel_thread+0x9a/0xc0
[ 3.745533] ? legacy_clone_args_valid+0x50/0x50
[ 3.745533] ? _find_next_bit+0x36/0x1b0
[ 3.745533] ? rest_init+0x273/0x273
[ 3.745533] rest_init+0x22/0x273
[ 3.745533] start_kernel+0xa15/0xa3f
[ 3.745533] ? thread_stack_cache_init+0x6/0x6
[ 3.745533] ? memcpy_orig+0x16/0x110
[ 3.745533] ? x86_family+0x5/0x20
[ 3.745533] ? load_ucode_bsp+0x42/0x144
[ 3.745533] secondary_startup_64+0xb6/0xc0
[ 3.745533]
[ 3.745533] Allocated by task 0:
[ 3.745533] save_stack+0x1b/0x40
[ 3.745533] __kasan_kmalloc+0xe2/0xf0
[ 3.745533] kmem_cache_alloc+0x197/0x4f0
[ 3.745533] alloc_pid+0xaf/0xa60
[ 3.745533] copy_process+0x25cb/0x74e0
[ 3.745533] _do_fork+0xf8/0xb80
[ 3.745533] kernel_thread+0x9a/0xc0
[ 3.745533] rest_init+0x22/0x273
[ 3.745533] start_kernel+0xa15/0xa3f
[ 3.745533] secondary_startup_64+0xb6/0xc0
[ 3.745533]
[ 3.745533] Freed by task 0:
[ 3.745533] (stack is not available)
[ 3.745533]
[ 3.745533] The buggy address belongs to the object at ffff8881f5f72000
# HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD
git bisect start ae1a42dc97fe538b80dda4e4b179ed5c553444dd 6a8b55ed4056ea5559ebe4f6a4b247f627870d4c --
git bisect bad 1b923d697c5f94c03e966253a0061b064814a255 # 02:02 B 0 11 29 2 x86/uv/time: Replace one-element array and save heap space
git bisect bad 021e70c3a66ced20bdfa6694d32bbb64bd8c954a # 02:35 B 0 11 31 4 treewide: Replace one-element array with flexible-array
# first bad commit: [021e70c3a66ced20bdfa6694d32bbb64bd8c954a] treewide: Replace one-element array with flexible-array
git bisect good 6a8b55ed4056ea5559ebe4f6a4b247f627870d4c # 02:40 G 32 0 0 6 Linux 5.7-rc3
# extra tests with debug options
git bisect bad 021e70c3a66ced20bdfa6694d32bbb64bd8c954a # 04:09 B 0 3 19 0 treewide: Replace one-element array with flexible-array
# extra tests on head commit of gustavoars-linux/testing/fam1
git bisect bad ae1a42dc97fe538b80dda4e4b179ed5c553444dd # 04:23 B 0 13 32 0 ice: Replace one-element arrays with flexible-arrays
# bad: [ae1a42dc97fe538b80dda4e4b179ed5c553444dd] ice: Replace one-element arrays with flexible-arrays
# extra tests on revert first bad commit
git bisect good cd9bedca23270fa6a9f92520819dc5ab407ea041 # 06:18 G 11 0 0 0 Revert "treewide: Replace one-element array with flexible-array"
# good: [cd9bedca23270fa6a9f92520819dc5ab407ea041] Revert "treewide: Replace one-element array with flexible-array"
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/lkp@lists.01.org
5 months
- 1
- 0
[x86/traps] 68a05c6247: PANIC:double_fault
by kernel test robot
Greeting,
FYI, we noticed the following commit (built with gcc-8):
commit: 68a05c6247d2aa67f5ada1009ffd19758e5914ea ("x86/traps: Mark fixup_bad_iret() noinstr")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
in testcase: kernel-selftests
with following parameters:
group: kselftests-x86
test-description: The kernel contains a set of "self tests" under the tools/testing/selftests/ directory. These are intended to be small unit tests to exercise individual code paths in the kernel.
test-url: https://www.kernel.org/doc/Documentation/kselftest.txt
on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+-----------------------------------------------------------+------------+------------+
| | b5f7e5db38 | 68a05c6247 |
+-----------------------------------------------------------+------------+------------+
| boot_successes | 8 | 4 |
| boot_failures | 4 | 3 |
| Kernel_panic-not_syncing:Attempted_to_kill_init!exitcode= | 4 | 2 |
| PANIC:double_fault | 0 | 1 |
| double_fault:#[##] | 0 | 1 |
| RIP:fixup_bad_iret | 0 | 1 |
| Kernel_panic-not_syncing:Fatal_exception_in_interrupt | 0 | 1 |
+-----------------------------------------------------------+------------+------------+
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <lkp(a)intel.com>
[ 223.398565]
[ 223.414051] ok 5 selftests: x86: check_initial_reg_state_32
[ 223.414091]
[ 223.454445] # selftests: x86: sigreturn_32
[ 223.454485]
[ 223.571324] traps: PANIC: double fault, error_code: 0x0
[ 223.571330] double fault: 0000 [#1] PREEMPT DEBUG_PAGEALLOC KASAN PTI
[ 223.571336] CPU: 0 PID: 1912 Comm: sigreturn_32 Not tainted 5.7.0-rc5-00292-g68a05c6247d2a #1
[ 223.571342] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 223.571346] RIP: 0010:fixup_bad_iret+0x37/0x140
[ 223.571359] Code: 48 c7 c7 80 0b 81 ba 41 54 49 bc 00 00 00 00 00 fc ff df 53 48 8d 9d d8 fe ff ff 48 c1 eb 03 4a 8d 04 23 48 81 ec 00 01 00 00 <48> c7 85 d8 fe ff ff b3 8a b5 41 48 c7 85 e0 fe ff ff c8 0f 60 bb
[ 223.571363] RSP: 0000:fffffe0000001fe8 EFLAGS: 00010086
[ 223.571371] RAX: fffffbc0000003fd RBX: 1fffffc0000003fd RCX: ffffffffba400aa0
[ 223.571377] RDX: 0000000000000000 RSI: ffffffffba400df5 RDI: ffffffffba810b80
[ 223.571383] RBP: fffffe0000002110 R08: 0000000000000000 R09: 0000000000000000
[ 223.571388] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
[ 223.571394] R13: fffffe0000002120 R14: 0000000000000000 R15: 0000000000000000
[ 223.571400] FS: 0000000000000000(0003) GS:ffffffffbb87e000(0063) knlGS:00000000f7c1b700
[ 223.571404] CS: 0010 DS: 0003 ES: 0003 CR0: 0000000080050033
[ 223.571410] CR2: fffffe0000001fd8 CR3: 00000001ddc30000 CR4: 00000000000406f0
[ 223.571413] Call Trace:
[ 223.571416] <ENTRY_TRAMPOLINE>
[ 223.571419] ? error_entry+0xdf/0xf0
[ 223.571423] ? general_protection+0x5/0x30
[ 223.571428] ? restore_regs_and_return_to_kernel+0x2d/0x2d
[ 223.571431] </ENTRY_TRAMPOLINE>
[ 223.571434] Modules linked in: ip_tables x_tables
[ 223.571445] ---[ end trace 15aaca2c6f41e51b ]---
[ 223.571448] RIP: 0010:fixup_bad_iret+0x37/0x140
[ 223.571460] Code: 48 c7 c7 80 0b 81 ba 41 54 49 bc 00 00 00 00 00 fc ff df 53 48 8d 9d d8 fe ff ff 48 c1 eb 03 4a 8d 04 23 48 81 ec 00 01 00 00 <48> c7 85 d8 fe ff ff b3 8a b5 41 48 c7 85 e0 fe ff ff c8 0f 60 bb
[ 223.571464] RSP: 0000:fffffe0000001fe8 EFLAGS: 00010086
[ 223.571472] RAX: fffffbc0000003fd RBX: 1fffffc0000003fd RCX: ffffffffba400aa0
[ 223.571477] RDX: 0000000000000000 RSI: ffffffffba400df5 RDI: ffffffffba810b80
[ 223.571482] RBP: fffffe0000002110 R08: 0000000000000000 R09: 0000000000000000
[ 223.571488] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
[ 223.571493] R13: fffffe0000002120 R14: 0000000000000000 R15: 0000000000000000
[ 223.571499] FS: 0000000000000000(0003) GS:ffffffffbb87e000(0063) knlGS:00000000f7c1b700
[ 223.571503] CS: 0010 DS: 0003 ES: 0003 CR0: 0000000080050033
[ 223.571508] CR2: fffffe0000001fd8 CR3: 00000001ddc30000 CR4: 00000000000406f0
[ 223.571513] Kernel panic - not syncing: Fatal exception in interrupt
[ 223.571533] Kernel Offset: 0x36200000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
Elapsed time: 240
qemu-img create -f qcow2 disk-vm-snb-195-0 256G
To reproduce:
# build kernel
cd linux
cp config-5.7.0-rc5-00292-g68a05c6247d2a .config
make HOSTCC=gcc-8 CC=gcc-8 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
lkp
5 months
- 1
- 0
4092a9304d ("__register_sysctl_table: do not drop subdir"): [ 52.099586] WARNING: CPU: 1 PID: 31 at fs/proc/proc_sysctl.c:1683 retire_sysctl_set
by kernel test robot
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
https://github.com/0day-ci/linux/commits/Boris-Sukholitko/__register_sysc...
commit 4092a9304d1dd88368c7cd327adb666f70a46519
Author: Boris Sukholitko <boris.sukholitko(a)broadcom.com>
AuthorDate: Wed May 27 13:48:48 2020 +0300
Commit: 0day robot <lkp(a)intel.com>
CommitDate: Wed May 27 18:50:45 2020 +0800
__register_sysctl_table: do not drop subdir
Successful get_subdir returns dir with its header.nreg properly
adjusted. No need to drop the dir in that case.
Signed-off-by: Boris Sukholitko <boris.sukholitko(a)broadcom.com>
Fixes: 7ec66d06362d (sysctl: Stop requiring explicit management of sysctl directories)
444fc5cde6 Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
4092a9304d __register_sysctl_table: do not drop subdir
+----------------------------------------------------------------+------------+------------+
| | 444fc5cde6 | 4092a9304d |
+----------------------------------------------------------------+------------+------------+
| boot_successes | 264 | 6 |
| boot_failures | 104 | 130 |
| WARNING:possible_circular_locking_dependency_detected | 96 | |
| WARNING:at_kernel/tracepoint.c:#tracepoint_probe_register_prio | 7 | 3 |
| EIP:tracepoint_probe_register_prio | 7 | 3 |
| BUG:kernel_timeout_in_boot_stage | 1 | 1 |
| WARNING:at_fs/proc/proc_sysctl.c:#retire_sysctl_set | 0 | 128 |
| EIP:retire_sysctl_set | 0 | 128 |
| BUG:kernel_NULL_pointer_dereference,address | 0 | 19 |
| Oops:#[##] | 0 | 19 |
| EIP:cap_capable | 0 | 19 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 19 |
| BUG:kernel_hang_in_test_stage | 0 | 1 |
+----------------------------------------------------------------+------------+------------+
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <lkp(a)intel.com>
[ 51.649226] init: tty3 main process ended, respawning
[ 51.719188] init: tty6 main process (792) terminated with status 1
[ 51.721264] init: tty6 main process ended, respawning
modprobe: FATAL: Could not load /lib/modules/5.7.0-rc7-00009-g4092a9304d1dd/modules.dep: No such file or directory
[ 52.098615] ------------[ cut here ]------------
[ 52.099586] WARNING: CPU: 1 PID: 31 at fs/proc/proc_sysctl.c:1683 retire_sysctl_set+0x50/0x60
[ 52.101221] Modules linked in:
[ 52.101759] CPU: 1 PID: 31 Comm: kworker/u4:1 Not tainted 5.7.0-rc7-00009-g4092a9304d1dd #2
[ 52.103038] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 52.104244] Workqueue: netns cleanup_net
[ 52.104916] EIP: retire_sysctl_set+0x50/0x60
[ 52.105562] Code: 76 5b de ff 59 80 7d fb 00 75 1f 6a 00 31 c9 89 da b8 e0 60 1b c3 e8 5f 5b de ff 58 8b 5d fc c9 c3 8d b4 26 00 00 00 00 66 90 <0f> 0b eb dd cc cc cc cc cc cc cc cc cc cc cc cc 3e 8d 74 26 00 55
[ 52.108365] EAX: c31b60f8 EBX: 00000001 ECX: 00000000 EDX: 00000001
[ 52.109372] ESI: c313cdb0 EDI: f6268000 EBP: f258fecc ESP: f258fec4
[ 52.110374] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00010202
[ 52.111412] CR0: 80050033 CR2: 092f7020 CR3: 3647d000 CR4: 000006d0
[ 52.112384] Call Trace:
[ 52.112868] sysctl_net_exit+0x12/0x20
[ 52.113500] ops_exit_list+0x36/0x60
[ 52.114225] cleanup_net+0x1ee/0x2e0
[ 52.114881] process_one_work+0x29a/0x840
[ 52.115569] worker_thread+0x4a/0x5b0
[ 52.116219] ? mod_delayed_work_on+0xc0/0xc0
[ 52.116996] kthread+0x179/0x1b0
[ 52.117555] ? mod_delayed_work_on+0xc0/0xc0
[ 52.118243] ? kthread_mod_delayed_work+0xd0/0xd0
[ 52.119039] ret_from_fork+0x19/0x30
[ 52.119754] irq event stamp: 88960
[ 52.120323] hardirqs last enabled at (88959): [<c131d825>] kmem_cache_free+0x355/0x760
[ 52.121559] hardirqs last disabled at (88960): [<c1001db8>] trace_hardirqs_off_thunk+0xc/0x10
[ 52.122880] softirqs last enabled at (88930): [<c212d0ac>] netlink_release+0x11c/0x390
[ 52.124072] softirqs last disabled at (88928): [<c212d08b>] netlink_release+0xfb/0x390
[ 52.125285] ---[ end trace 6d87d591316b74f1 ]---
[child0:741] trace_fd was -1
# HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD
git bisect start 1fba7744ed676276594af33c33711a7ade3c2917 9cb1fd0efd195590b828b9b865421ad345a4a145 --
git bisect bad a1f98555a06a0568e84f081f379495798761147d # 20:43 B 10 1 10 10 Merge 'thermal/next' into devel-hourly-2020052921
git bisect bad 6ae20b61b8ee22985f44e1d92d4f981f2ad7ae00 # 21:08 B 22 2 22 22 Merge 'linux-review/Lad-Prabhakar/media-rcar-vin-Enable-MEDIA_BUS_FMT_SRGGB8_1X8-format/20200527-201849' into devel-hourly-2020052921
git bisect good 48fcd3bb1c1f5fb23f6fe3892f9a8a53a3b3878c # 21:27 G 122 0 38 38 Merge 'lkundrak-linux-mmp/lr/ene-ec-v4' into devel-hourly-2020052921
git bisect bad 22197b2b90f8814d591f254a5e6bdc0fe627bdd2 # 21:36 B 0 2 18 0 Merge 'linux-review/Tiezhu-Yang/rtc-goldfish-Fix-return-value-of-goldfish_rtc_probe/20200523-175816' into devel-hourly-2020052921
git bisect good 676083e7e0847dcdc51959a3faac17e076215fb8 # 21:52 G 121 0 45 45 Merge 'linux-review/Gustavo-A-R-Silva/ice-Replace-one-element-arrays-with-flexible-arrays/20200527-230905' into devel-hourly-2020052921
git bisect good a83fb7003ae46837eb8046f1725dc5c3059dd946 # 22:45 G 125 0 31 31 Merge 'linux-review/Erwan-Le-Ray/STM32-Fix-uart-nodes-in-stm32mp15-pinctrl/20200528-154438' into devel-hourly-2020052921
git bisect bad 293ecfe783bbaa6c7c2ec2e36b8efb0e5e6fd4e9 # 23:02 B 0 1 17 0 Merge 'linux-review/Bartosz-Golaszewski/regmap-provide-simple-bitops-and-use-them-in-a-driver/20200528-234945' into devel-hourly-2020052921
git bisect bad 5a7a038200b0615de0ef730e14866cb5ada92864 # 23:19 B 0 3 19 0 Merge 'linux-review/Boris-Sukholitko/__register_sysctl_table-do-not-drop-subdir/20200527-185030' into devel-hourly-2020052921
git bisect good 1db0d7884078094719bcf5875e32819a1b180f00 # 23:33 G 124 0 41 41 Merge 'linux-review/Leon-Romanovsky/RDMA-core-Fix-double-destruction-of-uobject/20200527-225216' into devel-hourly-2020052921
git bisect bad 4092a9304d1dd88368c7cd327adb666f70a46519 # 23:55 B 0 4 20 0 __register_sysctl_table: do not drop subdir
# first bad commit: [4092a9304d1dd88368c7cd327adb666f70a46519] __register_sysctl_table: do not drop subdir
git bisect good 444fc5cde64330661bf59944c43844e7d4c2ccd8 # 00:20 G 361 0 110 110 Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
# extra tests with debug options
git bisect bad 4092a9304d1dd88368c7cd327adb666f70a46519 # 00:35 B 0 4 20 0 __register_sysctl_table: do not drop subdir
# extra tests on head commit of linux-review/Boris-Sukholitko/__register_sysctl_table-do-not-drop-subdir/20200527-185030
git bisect bad 4092a9304d1dd88368c7cd327adb666f70a46519 # 00:39 B 0 19 147 111 __register_sysctl_table: do not drop subdir
# bad: [4092a9304d1dd88368c7cd327adb666f70a46519] __register_sysctl_table: do not drop subdir
# extra tests on revert first bad commit
git bisect good 102477b34d0fd671b7779678812bf9979c25cba4 # 02:19 G 120 0 25 25 Revert "__register_sysctl_table: do not drop subdir"
# good: [102477b34d0fd671b7779678812bf9979c25cba4] Revert "__register_sysctl_table: do not drop subdir"
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/lkp@lists.01.org
5 months
- 1
- 0
021e70c3a6 ("treewide: Replace one-element array with .."): [ 26.399858] Mem-Info:
by kernel test robot
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git testing/fam1
commit 021e70c3a66ced20bdfa6694d32bbb64bd8c954a
Author: Gustavo A. R. Silva <gustavoars(a)kernel.org>
AuthorDate: Tue May 19 18:32:17 2020 -0500
Commit: Gustavo A. R. Silva <gustavoars(a)kernel.org>
CommitDate: Tue May 19 18:32:17 2020 -0500
treewide: Replace one-element array with flexible-array
The current codebase makes use of one-element arrays in the following
form:
struct something {
int length;
u8 data[1];
};
struct something *instance;
instance = kmalloc(sizeof(*instance) + size, GFP_KERNEL);
instance->length = size;
memcpy(instance->data, source, size);
but the preferred mechanism to declare variable-length types such as
these ones is a flexible array member[1][2], introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavoars(a)kernel.org>
6a8b55ed40 Linux 5.7-rc3
021e70c3a6 treewide: Replace one-element array with flexible-array
ae1a42dc97 ice: Replace one-element arrays with flexible-arrays
+---------------------------------------------------------------+----------+------------+------------+
| | v5.7-rc3 | 021e70c3a6 | ae1a42dc97 |
+---------------------------------------------------------------+----------+------------+------------+
| boot_successes | 1049 | 746 | 438 |
| boot_failures | 26 | 228 | 123 |
| invoked_oom-killer:gfp_mask=0x | 5 | 6 | 2 |
| Mem-Info | 6 | 19 | 4 |
| kernel_BUG_at_mm/vmalloc.c | 19 | 17 | 6 |
| invalid_opcode:#[##] | 19 | 18 | 8 |
| EIP:alloc_vmap_area | 19 | 17 | 6 |
| Kernel_panic-not_syncing:Fatal_exception | 19 | 69 | 40 |
| EIP:__copy_user_ll | 1 | 2 | 1 |
| EIP:hash_contains_ip | 1 | | |
| BUG:kernel_hang_in_boot_stage | 0 | 4 | |
| IP-Config:Auto-configuration_of_network_failed | 0 | 2 | |
| BUG:kernel_hang_in_test_stage | 0 | 4 | 2 |
| BUG:kernel_NULL_pointer_dereference,address | 0 | 115 | 68 |
| Oops:#[##] | 0 | 132 | 76 |
| EIP:put_pid | 0 | 68 | 47 |
| Kernel_panic-not_syncing:Fatal_exception_in_interrupt | 0 | 80 | 44 |
| WARNING:at_net/ipv6/ip6_fib.c:#fib6_repair_tree | 0 | 40 | 17 |
| EIP:fib6_repair_tree | 0 | 40 | 17 |
| WARNING:at_lib/refcount.c:#refcount_warn_saturate | 0 | 46 | 23 |
| EIP:refcount_warn_saturate | 0 | 46 | 23 |
| BUG:unable_to_handle_page_fault_for_address | 0 | 18 | 8 |
| EIP:vt_console_print | 0 | 1 | |
| EIP:native_machine_emergency_restart | 0 | 1 | |
| INFO:rcu_sched_self-detected_stall_on_CPU | 0 | 1 | |
| EIP:native_queued_spin_lock_slowpath | 0 | 1 | |
| BUG:soft_lockup-CPU##stuck_for#s![S99trinity-root:#] | 0 | 1 | |
| Kernel_panic-not_syncing:softlockup:hung_tasks | 0 | 1 | |
| EIP:fib6_node_lookup_1 | 0 | 3 | 2 |
| WARNING:at_mm/slab.h:#kmem_cache_free | 0 | 3 | 2 |
| EIP:kmem_cache_free | 0 | 5 | 3 |
| WARNING:at_fs/dcache.c:#dput | 0 | 1 | |
| EIP:dput | 0 | 1 | |
| EIP:fib_rules_event | 0 | 1 | |
| WARNING:at_net/ipv4/inet_connection_sock.c:#inet_csk_get_port | 0 | 1 | 2 |
| EIP:inet_csk_get_port | 0 | 1 | 2 |
| EIP:set_page_dirty | 0 | 1 | 1 |
| BUG:Bad_rss-counter_state_mm:#type:MM_SHMEMPAGES_val | 0 | 2 | 1 |
| BUG:non-zero_pgtables_bytes_on_freeing_mm | 0 | 13 | 11 |
| BUG:Bad_page_cache_in_process_trinity-c3_pfn:#c6ea | 0 | 1 | |
| EIP:aa_label_kref | 0 | 1 | |
| WARNING:at_mm/rmap.c:#unlink_anon_vmas | 0 | 3 | |
| EIP:unlink_anon_vmas | 0 | 3 | |
| PANIC:double_fault | 0 | 1 | |
| double_fault:#[##] | 0 | 1 | |
| EIP:flush_tlb_func_common | 0 | 1 | |
| WARNING:at_net/ipv6/ip6_fib.c:#fib6_walk_continue | 0 | 2 | 2 |
| EIP:fib6_walk_continue | 0 | 2 | 2 |
| EIP:kmem_cache_free_bulk | 0 | 1 | |
| WARNING:at_mm/rmap.c:#anon_vma_clone | 0 | 2 | |
| EIP:anon_vma_clone | 0 | 2 | |
| EIP:__put_anon_vma | 0 | 1 | |
| BUG:Bad_rss-counter_state_mm:#type:MM_ANONPAGES_val | 0 | 1 | 3 |
| EIP:handle_mm_fault | 0 | 3 | 1 |
| EIP:inet_sock_destruct | 0 | 1 | |
| kernel_BUG_at_mm/hugetlb.c | 0 | 1 | 2 |
| EIP:huge_pte_alloc | 0 | 1 | 2 |
| EIP:__get_user_4 | 0 | 1 | 1 |
| EIP:osq_lock | 0 | 1 | |
| BUG:Bad_rss-counter_state_mm:#type:MM_FILEPAGES_val | 0 | 1 | |
| EIP:put_pid_ns | 0 | 1 | 1 |
| EIP:__split_huge_pmd_locked | 0 | 1 | |
| EIP:free_pid | 0 | 3 | |
| EIP:__split_huge_pmd | 0 | 0 | 2 |
| EIP:copy_hugetlb_page_range | 0 | 0 | 2 |
| EIP:strncpy_from_user | 0 | 0 | 1 |
+---------------------------------------------------------------+----------+------------+------------+
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <lkp(a)intel.com>
[ 26.238706] audit: type=1326 audit(26.437:60): auid=4294967295 uid=4294959104 gid=59368 ses=4294967295 subj==unconfined pid=858 comm="trinity-c1" exe="/bin/trinity" sig=9 arch=40000003 syscall=19 compat=0 ip=0xb7f3024d code=0x0
[ 26.322734] audit: type=1326 audit(26.521:61): auid=4294967295 uid=3071 gid=0 ses=4294967295 subj==unconfined pid=902 comm="trinity-c1" exe="/bin/trinity" sig=9 arch=40000003 syscall=19 compat=0 ip=0xb7f3024d code=0x0
[ 26.381614] vmap allocation for size 143429632 failed: use vmalloc=<size> to increase size
[ 26.382762] trinity-c1: vmalloc: allocation failure: 143421570 bytes, mode:0xcc0(GFP_KERNEL), nodemask=(null),cpuset=/,mems_allowed=0
[ 26.384332] CPU: 1 PID: 913 Comm: trinity-c1 Not tainted 5.7.0-rc3-00001-g021e70c3a66ce #1
[ 26.385448] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 26.386572] Call Trace:
[ 26.386973] dump_stack+0x60/0x7e
[ 26.387469] warn_alloc.cold+0x55/0xaf
[ 26.388011] __vmalloc_node_range+0x178/0x250
[ 26.388620] __vmalloc_node+0x46/0x50
[ 26.389268] ? kernel_read_file+0x198/0x230
[ 26.389850] vmalloc+0x34/0x40
[ 26.390305] ? kernel_read_file+0x198/0x230
[ 26.390892] kernel_read_file+0x198/0x230
[ 26.391464] ? apparmor_task_alloc+0x100/0x100
[ 26.392084] kernel_read_file_from_fd+0x36/0x70
[ 26.392718] __ia32_sys_finit_module+0x6f/0xe0
[ 26.393345] do_fast_syscall_32+0x86/0x212
[ 26.393929] entry_SYSENTER_32+0xa5/0xf8
[ 26.394499] EIP: 0xb7f3024d
[ 26.394928] Code: 0a 01 00 00 89 da 89 f3 e8 14 00 00 00 89 d3 5b 5e 5d c3 8b 04 24 c3 8b 1c 24 c3 8b 3c 24 c3 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d 76 00 58 b8 77 00 00 00 cd 80 90 8d 76
[ 26.397309] EAX: ffffffda EBX: 00000133 ECX: b6c9b000 EDX: 00000002
[ 26.398134] ESI: 204f496a EDI: 0000fffd EBP: 00000047 ESP: bfefbb1c
[ 26.398957] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00000296
[ 26.399858] Mem-Info:
[ 26.400244] active_anon:11852 inactive_anon:38279 isolated_anon:0
[ 26.400244] active_file:0 inactive_file:2 isolated_file:0
[ 26.400244] unevictable:8977 dirty:0 writeback:0 unstable:0
[ 26.400244] slab_reclaimable:5062 slab_unreclaimable:2030
[ 26.400244] mapped:11290 shmem:48398 pagetables:473 bounce:0
[ 26.400244] free:1985158 free_pcp:540 free_cma:51200
[ 26.404408] Node 0 active_anon:47408kB inactive_anon:153116kB active_file:0kB inactive_file:8kB unevictable:35908kB isolated(anon):0kB isolated(file):0kB mapped:45160kB dirty:0kB writeback:0kB shmem:193592kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
[ 26.407826] Node 0 DMA free:15916kB min:788kB low:984kB high:1180kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15916kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[ 26.411348] lowmem_reserve[]: 0 496 7808 7808
# HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD
git bisect start ae1a42dc97fe538b80dda4e4b179ed5c553444dd 6a8b55ed4056ea5559ebe4f6a4b247f627870d4c --
git bisect bad 1b923d697c5f94c03e966253a0061b064814a255 # 17:53 B 466 2 0 166 x86/uv/time: Replace one-element array and save heap space
git bisect bad 021e70c3a66ced20bdfa6694d32bbb64bd8c954a # 17:53 B 746 1 0 253 treewide: Replace one-element array with flexible-array
# first bad commit: [021e70c3a66ced20bdfa6694d32bbb64bd8c954a] treewide: Replace one-element array with flexible-array
git bisect good 6a8b55ed4056ea5559ebe4f6a4b247f627870d4c # 18:32 G 1002 0 5 55 Linux 5.7-rc3
# extra tests with debug options
git bisect bad 021e70c3a66ced20bdfa6694d32bbb64bd8c954a # 19:32 B 43 1 15 17 treewide: Replace one-element array with flexible-array
# extra tests on head commit of gustavoars-linux/testing/fam1
git bisect bad ae1a42dc97fe538b80dda4e4b179ed5c553444dd # 19:36 B 438 2 0 134 ice: Replace one-element arrays with flexible-arrays
# bad: [ae1a42dc97fe538b80dda4e4b179ed5c553444dd] ice: Replace one-element arrays with flexible-arrays
# extra tests on revert first bad commit
git bisect good cd9bedca23270fa6a9f92520819dc5ab407ea041 # 13:01 G 908 0 41 41 Revert "treewide: Replace one-element array with flexible-array"
# good: [cd9bedca23270fa6a9f92520819dc5ab407ea041] Revert "treewide: Replace one-element array with flexible-array"
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/lkp@lists.01.org
5 months
- 1
- 0
8177b7dcea ("scsi: move target device list to xarray"): WARNING: CPU: 0 PID: 7 at drivers/scsi/scsi_sysfs.c:1626 scsi_sysfs_device_initialize
by kernel test robot
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
https://github.com/0day-ci/linux/commits/Hannes-Reinecke/scsi-use-xarray-...
commit 8177b7dcea063fe348a9bf2e987142dbe5e36269
Author: Hannes Reinecke <hare(a)suse.de>
AuthorDate: Wed May 27 16:13:59 2020 +0200
Commit: 0day robot <lkp(a)intel.com>
CommitDate: Wed May 27 23:18:42 2020 +0800
scsi: move target device list to xarray
Use xarray for device lookup by target. LUNs below 256 are linear,
and can be used directly as the index into the xarray.
LUNs above 256 have a distinct LUN format, and are not necessarily
linear. They'll be stored in indices above 256 in the xarray, with
the next free index in the xarray.
Signed-off-by: Hannes Reinecke <hare(a)suse.de>
b57c88c303 target_core_pscsi: use __scsi_device_lookup()
8177b7dcea scsi: move target device list to xarray
2b83242b28 scsi: remove direct device lookup per host
+--------------------------------------------------------------------+------------+------------+------------+
| | b57c88c303 | 8177b7dcea | 2b83242b28 |
+--------------------------------------------------------------------+------------+------------+------------+
| boot_successes | 32 | 0 | 0 |
| boot_failures | 6 | 23 | 17 |
| BUG:kernel_NULL_pointer_dereference,address | 5 | 4 | 4 |
| Oops:#[##] | 5 | 4 | 4 |
| EIP:do_swap_page | 5 | 4 | 4 |
| Kernel_panic-not_syncing:Fatal_exception | 5 | 4 | 3 |
| BUG:Bad_page_map_in_process | 1 | 1 | |
| BUG:Bad_rss-counter_state_mm:#type:MM_SWAPENTS_val | 1 | 1 | |
| BUG:Bad_rss-counter_state_mm:#type:MM_SHMEMPAGES_val | 1 | 1 | |
| EIP:__copy_user_ll | 1 | | |
| WARNING:at_drivers/scsi/scsi_sysfs.c:#scsi_sysfs_device_initialize | 0 | 23 | 17 |
| EIP:scsi_sysfs_device_initialize | 0 | 23 | 17 |
+--------------------------------------------------------------------+------------+------------+------------+
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <lkp(a)intel.com>
[ 2.947662] imm: Version 2.05 (for Linux 2.4.0)
[ 2.950853] st: Version 20160209, fixed bufsize 32768, s/g segs 256
[ 2.960659] scsi host0: scsi_debug: version 0189 [20200421]
[ 2.960659] dev_size_mb=8, opts=0x0, submit_queues=1, statistics=0
[ 2.965081] ------------[ cut here ]------------
[ 2.965510] WARNING: CPU: 0 PID: 7 at drivers/scsi/scsi_sysfs.c:1626 scsi_sysfs_device_initialize+0x11c/0x187
[ 2.965510] Modules linked in:
[ 2.965510] CPU: 0 PID: 7 Comm: kworker/u4:0 Not tainted 5.7.0-rc1-00210-g8177b7dcea063 #1
[ 2.965510] Workqueue: events_unbound async_run_entry_fn
[ 2.965510] EIP: scsi_sysfs_device_initialize+0x11c/0x187
[ 2.965510] Code: e8 0d 03 3d 00 68 c0 0c 00 00 89 f1 8b 55 ec 8d 47 0c e8 d2 37 ea ff 89 45 ec 8d 47 0c e8 76 06 3d 00 58 8b 55 ec 85 d2 75 3c <0f> 0b eb 38 8d 47 0c e8 dc 02 3d 00 8d 56 70 68 c0 0c 00 00 68 00
[ 2.965510] EAX: 00000cc0 EBX: f3784008 ECX: 00000004 EDX: 00000000
[ 2.965510] ESI: f378b008 EDI: f3785590 EBP: 4017fdbc ESP: 4017fda8
[ 2.965510] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010046
[ 2.965510] CR0: 80050033 CR2: 00000000 CR3: 0222c000 CR4: 00040690
[ 2.965510] Call Trace:
[ 2.965510] ? scsi_alloc_sdev+0x22c/0x26f
[ 2.965510] ? scsi_probe_and_add_lun+0xbc/0x475
[ 2.965510] ? preempt_count_sub+0x82/0x90
[ 2.965510] ? mark_held_locks+0x40/0x51
[ 2.965510] ? preempt_latency_stop+0x50/0x53
[ 2.965510] ? preempt_count_sub+0x82/0x90
[ 2.965510] ? _raw_spin_unlock_irqrestore+0x40/0x53
[ 2.965510] ? __scsi_scan_target+0xa0/0x1d0
[ 2.965510] ? preempt_latency_stop+0x50/0x53
[ 2.965510] ? scsi_scan_channel+0x47/0x6d
[ 2.965510] ? scsi_scan_host_selected+0xb1/0xef
[ 2.965510] ? scsi_scan_host+0x17f/0x17f
[ 2.965510] ? do_scsi_scan_host+0x67/0x71
[ 2.965510] ? do_scan_async+0x16/0x135
[ 2.965510] ? scsi_scan_host+0x17f/0x17f
[ 2.965510] ? async_run_entry_fn+0x74/0x12e
[ 2.965510] ? process_one_work+0x27d/0x42f
[ 2.965510] ? worker_thread+0x179/0x22c
[ 2.965510] ? kthread+0x104/0x109
[ 2.965510] ? rescuer_thread+0x252/0x252
[ 2.965510] ? kthread_create_on_node+0x1f/0x1f
[ 2.965510] ? ret_from_fork+0x2e/0x40
[ 2.965510] irq event stamp: 8406
[ 2.965510] hardirqs last enabled at (8405): [<418f5a4f>] _raw_spin_unlock_irqrestore+0x34/0x53
[ 2.965510] hardirqs last disabled at (8406): [<418f57eb>] _raw_spin_lock_irqsave+0x19/0x6d
[ 2.965510] softirqs last enabled at (8144): [<418f98a9>] __do_softirq+0x341/0x371
[ 2.965510] softirqs last disabled at (8135): [<4100a826>] call_on_stack+0x45/0x4b
[ 2.965510] ---[ end trace 5f8f7a50e2514289 ]---
[ 3.001482] scsi 0:0:0:0: Direct-Access Linux scsi_debug 0189 PQ: 0 ANSI: 7
# HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD
git bisect start 1d0e3c9474629024587d5231a469536ec6fb21bb 9cb1fd0efd195590b828b9b865421ad345a4a145 --
git bisect bad 80b846d897551fab283f3d5643be4c61cd054c25 # 21:07 B 0 3 19 0 Merge 'linux-review/Chris-Packham/HID-logitech-dj-Fix-spelling-in-comment/20200526-070408' into devel-hourly-2020053004
git bisect good d152a5fe7a2242f55321e0bbcf9a73fcd639bff1 # 21:35 G 10 0 0 0 Merge 'linux-review/UPDATE-20200527-025635/Gaurav-Pathak/Removing-ununsed-variable-int-lo-hi-int-data-and-int-i-from-comedi-drivers-dt2814-c/20200524-194027' into devel-hourly-2020053004
git bisect bad aa8c15930fa25caa6910672efdc92364725a8bd0 # 22:08 B 0 2 18 0 Merge 'linux-review/UPDATE-20200525-170803/Alexandru-Ardelean/iio-stm32-adc-keep-a-reference-to-the-iio-device-on-the-state-struct/20200522-211102' into devel-hourly-2020053004
git bisect bad 89040fd6fec9332ed7bc70d858bf4d1ca28aea6f # 22:37 B 0 2 18 0 Merge 'linux-review/Chao-Yu/writeback-remove-unused-variable/20200528-120502' into devel-hourly-2020053004
git bisect bad 447360c79352909436aa25c427589767b2ab7a80 # 23:06 B 0 8 24 0 Merge 'linux-review/Mike-Rapoport/sparc32-register-memory-occupied-by-kernel-as-memblock-memory/20200525-005617' into devel-hourly-2020053004
git bisect bad b1b8f6e478f91166f0ea0fd7a079d813ce75fb54 # 23:24 B 0 4 20 0 Merge 'linux-review/wu000273-umn-edu/iommu-Fix-reference-count-leak-in-iommu_group_alloc/20200528-050237' into devel-hourly-2020053004
git bisect good 4859920fd84b6e32ed5dcac27ca526b1a40aac0a # 23:42 G 11 0 0 0 Merge 'linux-review/Dan-Murphy/dt-bindings-power-Add-BQ27561-compatible/20200528-202355' into devel-hourly-2020053004
git bisect bad 4699fdc1da989b7f93b4a586c445e22afe03d68a # 23:50 B 0 11 28 1 Merge 'lkundrak-linux-mmp/lr/nand/cafe-nand-exec-op-debug' into devel-hourly-2020053004
git bisect bad 795d9cb0b1a492cf4950cb23f0fc88bde7f430b3 # 00:03 B 0 11 27 0 Merge 'linux-review/Hannes-Reinecke/scsi-use-xarray-for-devices-and-targets/20200527-231824' into devel-hourly-2020053004
git bisect good b57c88c303c112261f44e7494fcdd64eaec913a1 # 00:18 G 10 0 2 2 target_core_pscsi: use __scsi_device_lookup()
git bisect bad 2b83242b2894d17aab914d66457b8dab75773acf # 00:36 B 0 2 18 0 scsi: remove direct device lookup per host
git bisect bad 8177b7dcea063fe348a9bf2e987142dbe5e36269 # 00:53 B 0 4 20 0 scsi: move target device list to xarray
# first bad commit: [8177b7dcea063fe348a9bf2e987142dbe5e36269] scsi: move target device list to xarray
git bisect good b57c88c303c112261f44e7494fcdd64eaec913a1 # 01:02 G 32 0 6 8 target_core_pscsi: use __scsi_device_lookup()
# extra tests with debug options
git bisect bad 8177b7dcea063fe348a9bf2e987142dbe5e36269 # 01:14 B 0 3 19 0 scsi: move target device list to xarray
# extra tests on head commit of linux-review/Hannes-Reinecke/scsi-use-xarray-for-devices-and-targets/20200527-231824
git bisect bad 2b83242b2894d17aab914d66457b8dab75773acf # 01:37 B 0 17 33 0 scsi: remove direct device lookup per host
# bad: [2b83242b2894d17aab914d66457b8dab75773acf] scsi: remove direct device lookup per host
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/lkp@lists.01.org
5 months
- 1
- 0
[afs] 9d1be4f4dc: kernel-selftests.bpf.test_sockmap.fail
by kernel test robot
Greeting,
FYI, we noticed the following commit (built with gcc-7):
commit: 9d1be4f4dc5ff1c66c86acfd2c35765d9e3776b3 ("afs: Don't unlock fetched data pages until the op completes successfully")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
in testcase: kernel-selftests
with following parameters:
group: kselftests-bpf
test-description: The kernel contains a set of "self tests" under the tools/testing/selftests/ directory. These are intended to be small unit tests to exercise individual code paths in the kernel.
test-url: https://www.kernel.org/doc/Documentation/kselftest.txt
on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <rong.a.chen(a)intel.com>
# selftests: bpf: test_sockmap
# libbpf: load bpf program failed: Permission denied
# libbpf: -- BEGIN DUMP LOG ---
# libbpf:
# ; int bpf_prog2(struct __sk_buff *skb)
# 0: (bf) r6 = r1
# ; __u32 lport = skb->local_port;
# 1: (61) r1 = *(u32 *)(r6 +136)
# 2: (b4) w7 = 10
# 3: (16) if w1 == 0x2710 goto pc+1
# R1_w=inv(id=0,umax_value=2147483647,var_off=(0x0; 0xffffffff)) R6_w=ctx(id=0,off=0,imm=0) R7_w=inv10 R10=fp0
# 4: (b4) w7 = 1
# 5: (b4) w1 = 0
# ; int len, *f, ret, zero = 0;
# 6: (63) *(u32 *)(r10 -4) = r1
# last_idx 6 first_idx 0
# regs=2 stack=0 before 5: (b4) w1 = 0
# ; len = (__u32)skb->data_end - (__u32)skb->data;
# 7: (61) r1 = *(u32 *)(r6 +76)
# ; len = (__u32)skb->data_end - (__u32)skb->data;
# 8: (63) *(u32 *)(r10 -44) = r1
# invalid size of register spill
# processed 9 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
#
# libbpf: -- END LOG --
# libbpf: failed to load program 'sk_skb2'
# libbpf: failed to load object 'test_sockmap_kern.o'
# libbpf: Can't get the 0th fd from program sk_skb1: only -1 instances
# libbpf: Can't get the 0th fd from program sk_skb2: only -1 instances
# libbpf: Can't get the 0th fd from program sockops: only -1 instances
# libbpf: Can't get the 0th fd from program sk_msg1: only -1 instances
# libbpf: Can't get the 0th fd from program sk_msg2: only -1 instances
# libbpf: Can't get the 0th fd from program sk_msg3: only -1 instances
# libbpf: Can't get the 0th fd from program sk_msg4: only -1 instances
# libbpf: Can't get the 0th fd from program sk_msg5: only -1 instances
# libbpf: Can't get the 0th fd from program sk_msg6: only -1 instances
# libbpf: Can't get the 0th fd from program sk_msg7: only -1 instances
# load_bpf_file: (-1) Permission denied
# ERROR: (-1) load bpf failed
not ok 13 selftests: bpf: test_sockmap # exit=255
To reproduce:
# build kernel
cd linux
cp config-5.7.0-rc6-00001-g9d1be4f4dc5ff .config
make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
Rong Chen
5 months
- 1
- 0
0604a4fd53 ("x86/mm: remove vmalloc faulting"): [ 80.661587] BUG: unable to handle page fault for address: fb40c000
by kernel test robot
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
commit 0604a4fd53020a98f029e7fd56d896a136ff2357
Author: Joerg Roedel <jroedel(a)suse.de>
AuthorDate: Sat May 16 15:19:37 2020 +1000
Commit: Stephen Rothwell <sfr(a)canb.auug.org.au>
CommitDate: Sat May 16 15:19:37 2020 +1000
x86/mm: remove vmalloc faulting
Remove fault handling on vmalloc areas, as the vmalloc code now takes care
of synchronizing changes to all page-tables in the system.
Link: http://lkml.kernel.org/r/20200515140023.25469-8-joro@8bytes.org
Signed-off-by: Joerg Roedel <jroedel(a)suse.de>
Acked-by: Andy Lutomirski <luto(a)kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz(a)infradead.org>
Cc: Arnd Bergmann <arnd(a)arndb.de>
Cc: Christoph Hellwig <hch(a)lst.de>
Cc: Dave Hansen <dave.hansen(a)linux.intel.com>
Cc: "H . Peter Anvin" <hpa(a)zytor.com>
Cc: Ingo Molnar <mingo(a)elte.hu>
Cc: Matthew Wilcox (Oracle) <willy(a)infradead.org>
Cc: Michal Hocko <mhocko(a)kernel.org>
Cc: "Rafael J. Wysocki" <rjw(a)rjwysocki.net>
Cc: Steven Rostedt (VMware) <rostedt(a)goodmis.org>
Cc: Thomas Gleixner <tglx(a)linutronix.de>
Cc: Vlastimil Babka <vbabka(a)suse.cz>
Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org>
Signed-off-by: Stephen Rothwell <sfr(a)canb.auug.org.au>
89c4ebd3f2 mm: remove vmalloc_sync_(un)mappings()
0604a4fd53 x86/mm: remove vmalloc faulting
+-----------------------------------------------------------------------------------+------------+------------+
| | 89c4ebd3f2 | 0604a4fd53 |
+-----------------------------------------------------------------------------------+------------+------------+
| boot_successes | 291 | 82 |
| boot_failures | 37 | 34 |
| WARNING:held_lock_freed | 30 | 9 |
| is_freeing_memory#-#,with_a_lock_still_held_there | 30 | 9 |
| Mem-Info | 5 | 1 |
| Initiating_system_reboot | 6 | 5 |
| BUG:soft_lockup-CPU##stuck_for#s![trinity-c5:#] | 1 | |
| EIP:smp_call_function_single | 1 | |
| Kernel_panic-not_syncing:softlockup:hung_tasks | 1 | |
| BUG:sleeping_function_called_from_invalid_context_at_include/linux/percpu-rwsem.h | 1 | |
| BUG:unable_to_handle_page_fault_for_address | 0 | 22 |
| Oops:#[##] | 0 | 23 |
| EIP:__vmalloc_node_range | 0 | 14 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 23 |
| EIP:memcpy | 0 | 8 |
| BUG:unable_to_handle_page_fault_for_address:fb#c000 | 0 | 1 |
| EIP:__build_skb_around | 0 | 1 |
| BUG:unable_to_handle_page_fault_for_address:fc#c000 | 0 | 1 |
+-----------------------------------------------------------------------------------+------------+------------+
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <lkp(a)intel.com>
[ 78.622971] audit: type=1326 audit(1969448310.109:76): auid=4294967295 uid=2576977920 gid=3469659854 ses=4294967295 subj=kernel pid=1652 comm="trinity-c3" exe="/bin/trinity" sig=9 arch=40000003 syscall=19 compat=0 ip=0x809b132 code=0x0
[ 78.769265] audit: type=1326 audit(1969448310.255:77): auid=4294967295 uid=32 gid=478625670 ses=4294967295 subj=kernel pid=1630 comm="trinity-c6" exe="/bin/trinity" sig=9 arch=40000003 syscall=19 compat=0 ip=0x809b132 code=0x0
[ 79.124805] LoadPin: kernel-module old-api-denied obj=<unknown> pid=1728 cmdline="/bin/trinity -q -d -N 999999"
[ 80.251035] audit: type=1326 audit(804323345.900:78): auid=4294967295 uid=64 gid=0 ses=4294967295 subj=kernel pid=1703 comm="trinity-c2" exe="/bin/trinity" sig=9 arch=40000003 syscall=19 compat=0 ip=0x809b132 code=0x0
[ 80.330316] LoadPin: kernel-module old-api-denied obj=<unknown> pid=1742 cmdline="/bin/trinity -q -d -N 999999"
[ 80.661587] BUG: unable to handle page fault for address: fb40c000
[ 80.662910] #PF: supervisor write access in kernel mode
[ 80.663948] #PF: error_code(0x0002) - not-present page
[ 80.664986] *pde = 00000000
[ 80.665606] Oops: 0002 [#1] PREEMPT SMP
[ 80.666428] CPU: 1 PID: 1721 Comm: trinity-c3 Not tainted 5.7.0-rc5-00205-g0604a4fd53020a #1
[ 80.668017] EIP: __vmalloc_node_range+0x16d/0x470
[ 80.668864] Code: 00 83 05 48 d6 9b ba 01 83 15 4c d6 9b ba 00 85 c0 5a 74 61 8b 4d ec 8b 53 10 83 05 58 d6 9b ba 01 83 15 5c d6 9b ba 00 85 c9 <89> 04 b2 0f 85 22 01 00 00 83 c6 01 8b 43 14 83 05 70 d6 9b ba 01
[ 80.672047] EAX: f5a2bba0 EBX: ed6735c0 ECX: 00000400 EDX: fb40c000
[ 80.673019] ESI: 00000000 EDI: ffffffff EBP: e5477e84 ESP: e5477e68
[ 80.673754] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010206
[ 80.675084] CR0: 80050033 CR2: fb40c000 CR3: 3d68c000 CR4: 00000690
[ 80.676323] Call Trace:
[ 80.676916] __vmalloc_node+0x5a/0x70
[ 80.677685] ? kernel_read_file+0x4be/0x5b0
[ 80.678564] vmalloc+0x38/0x50
[ 80.679220] ? kernel_read_file+0x4be/0x5b0
[ 80.680085] kernel_read_file+0x4be/0x5b0
[ 80.680948] ? security_capable+0x72/0x100
[ 80.681824] kernel_read_file_from_fd+0x52/0xc0
[ 80.682694] __ia32_sys_finit_module+0xe7/0x1c0
[ 80.683630] ? rcu_read_lock_sched_held+0x75/0xf0
[ 80.684688] do_int80_syscall_32+0x87/0x4a0
[ 80.685506] entry_INT80_32+0x136/0x136
[ 80.686342] EIP: 0x809b132
[ 80.686904] Code: 89 c8 c3 90 8d 74 26 00 85 c0 c7 01 01 00 00 00 75 d8 a1 6c 94 a8 08 eb d1 66 90 66 90 66 90 66 90 66 90 66 90 66 90 90 cd 80 <c3> 8d b6 00 00 00 00 8d bc 27 00 00 00 00 8b 10 a3 94 94 a8 08 85
[ 80.690396] EAX: ffffffda EBX: 00000132 ECX: a6f11000 EDX: 00000000
[ 80.691639] ESI: 00000024 EDI: 0000fffc EBP: 0000fff8 ESP: afef5ae8
[ 80.692918] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00000292
[ 80.694316] Modules linked in:
[ 80.694962] CR2: 00000000fb40c000
[ 80.695729] ---[ end trace eda436684f987d33 ]---
[ 80.696742] EIP: __vmalloc_node_range+0x16d/0x470
# HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD
git bisect start 72bc15d0018ebfbc9c389539d636e2e9a9002b3b v5.6 --
git bisect good 51184ae37e0518fd90cb437a2fbc953ae558cd0d # 01:55 G 25 0 1 1 Merge tag 'for-5.7-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
git bisect good 0f640455c6f48442aee2c2130e402fce446adab2 # 02:59 G 25 0 2 4 Merge remote-tracking branch 'samsung-krzk/for-next'
git bisect good 5341ee365011b305ef8755612358378498d721bb # 03:56 G 25 0 2 2 next-20200515/mmc
git bisect good b64f6180e59db51239ed005ac46b97bcfc3949de # 04:44 G 25 0 1 1 Merge remote-tracking branch 'soundwire/next'
git bisect good 63d1307d822840a198137eda0ef4222c75dc3343 # 05:48 G 26 0 5 5 Merge remote-tracking branch 'rtc/rtc-next'
git bisect good 867ec42bbb97865e4a09fcfeaf1083dc2d56dd71 # 06:43 G 25 0 1 1 Merge remote-tracking branch 'pidfd/for-next'
git bisect good 449f4c0843bcc096f1ca353f70336e279fe9e1f8 # 07:37 G 26 0 0 0 Merge remote-tracking branch 'mhi/mhi-next'
git bisect good 7ca87fc66a98c2fbb65fa2ff2fc7d39f51e40132 # 08:13 G 25 0 1 1 Merge remote-tracking branch 'fsinfo/fsinfo-core'
git bisect bad bcda3c9d968d3a8b596904fb2ff8009717ffb6ef # 08:31 B 1 1 0 16 Merge branch 'akpm-current/current'
git bisect bad e783ce22eccc7ce946268282eebb7157d65c80ee # 09:01 B 9 1 3 5 mm/pagealloc.c: call touch_nmi_watchdog() on max order boundaries in deferred init
git bisect good 5c8ba2331d83d425ee467917107aba05768172c0 # 10:56 G 75 0 7 8 mm: memcontrol: switch to native NR_ANON_MAPPED counter
git bisect good f01a585dde24f6bd96852392f5dbc455c3df97a1 # 12:27 G 77 0 5 5 arm64: use __vmalloc_node in arch_alloc_vmap_stack
git bisect bad dca88d002e3ec1e3b58cc0a6eb142ce982211e2f # 12:59 B 2 1 0 1 arm64: simplify detection of memory zone boundaries for UMA configs
git bisect bad 102f972d05bc0b3d155000d1ab242ef88f64bb26 # 14:11 B 17 1 1 1 kasan: stop tests being eliminated as dead code with FORTIFY_SOURCE
git bisect good d0853ba5003ff8a6240b6f8bd5751c5ea8257649 # 17:33 G 100 0 15 15 mm/ioremap: track which page-table levels were modified
git bisect good 89c4ebd3f20b5ef8015d38d090e2c124bcf51581 # 21:03 G 100 0 17 17 mm: remove vmalloc_sync_(un)mappings()
git bisect bad 3149888435b3e8b872c3adee3d0af94efb80984f # 21:39 B 7 1 3 3 mm/mm_init.c: report kasan-tag information stored in page->flags
git bisect bad 0604a4fd53020a98f029e7fd56d896a136ff2357 # 22:06 B 1 1 0 3 x86/mm: remove vmalloc faulting
# first bad commit: [0604a4fd53020a98f029e7fd56d896a136ff2357] x86/mm: remove vmalloc faulting
git bisect good 89c4ebd3f20b5ef8015d38d090e2c124bcf51581 # 00:56 G 300 0 18 36 mm: remove vmalloc_sync_(un)mappings()
# extra tests with debug options
git bisect bad 0604a4fd53020a98f029e7fd56d896a136ff2357 # 01:13 B 0 1 17 0 x86/mm: remove vmalloc faulting
# extra tests on revert first bad commit
git bisect good 4fbd745e10774f514360e74fb02fac41c7a63b26 # 04:57 G 101 0 18 18 Revert "x86/mm: remove vmalloc faulting"
# good: [4fbd745e10774f514360e74fb02fac41c7a63b26] Revert "x86/mm: remove vmalloc faulting"
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/lkp@lists.01.org
5 months
- 2
- 2
[nexthops] dfb537446f: WARNING:at_mm/usercopy.c:#usercopy_warn
by kernel test robot
Greeting,
FYI, we noticed the following commit (built with gcc-5):
commit: dfb537446f8bbbbfdeec6fcf2737741251611865 ("nexthops: Remove net argument from replace_nexthop_grp")
https://github.com/dsahern/linux nexthops/del-group-05
in testcase: trinity
with following parameters:
runtime: 300s
test-description: Trinity is a linux system call fuzz tester.
test-url: http://codemonkey.org.uk/projects/trinity/
on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+-----------------------------------------+------------+------------+
| | ad5711e614 | dfb537446f |
+-----------------------------------------+------------+------------+
| boot_successes | 12 | 11 |
| boot_failures | 0 | 1 |
| WARNING:at_mm/usercopy.c:#usercopy_warn | 0 | 1 |
| RIP:usercopy_warn | 0 | 1 |
+-----------------------------------------+------------+------------+
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <rong.a.chen(a)intel.com>
[ 662.990644] WARNING: CPU: 0 PID: 3447 at mm/usercopy.c:80 usercopy_warn+0x8b/0x94
[ 662.991728] Modules linked in: mpls_router can_raw can nfnetlink
[ 662.992429] CPU: 0 PID: 3447 Comm: trinity-c2 Not tainted 5.7.0-rc5-00233-gdfb537446f8bb #1
[ 662.993408] RIP: 0010:usercopy_warn+0x8b/0x94
[ 662.993901] Code: 41 50 48 c7 c0 90 f4 dc 82 48 0f 44 d6 41 52 48 c7 c6 2e 8f ec 82 55 48 0f 45 f0 49 89 d8 48 c7 c7 99 f4 dc 82 e8 6a 1c eb ff <0f> 0b 48 83 c4 18 5b 5d c3 e8 77 ed dc 00 48 85 f6 53 4c 89 c3 74
[ 662.996011] RSP: 0018:ffff888214177de8 EFLAGS: 00010282
[ 662.996617] RAX: 0000000000000079 RBX: ffffffff82dd7cea RCX: 0000000000000001
[ 662.997412] RDX: 0000000000000001 RSI: ffffffff81105e2e RDI: 0000000000000001
[ 662.998222] RBP: ffffffff82dd7ceb R08: 000000000000000c R09: 0000000000000001
[ 662.999077] R10: 00000000000004d8 R11: ffff888214177c85 R12: 0000000000000001
[ 662.999888] R13: 0000000000000001 R14: 000000000000000c R15: ffffea00086f3a00
[ 663.000726] FS: 0000000001188880(0000) GS:ffffffff83248000(0000) knlGS:0000000000000000
[ 663.001673] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 663.002347] CR2: 00007ff25bbf40fc CR3: 000000021d014000 CR4: 00000000000406f0
[ 663.003196] DR0: 0000000000000000 DR1: 00007ff25a41f000 DR2: 00007ff25a81f000
[ 663.004010] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000070602
[ 663.004812] Call Trace:
[ 663.005102] __check_object_size+0xf7/0x2eb
[ 663.005603] dn_getsockopt+0x258/0x2b6
[ 663.006040] ? arch_local_irq_save+0x5/0x7
[ 663.006516] __sys_getsockopt+0x79/0xdf
[ 663.006990] __x64_sys_getsockopt+0x20/0x23
[ 663.007503] do_syscall_64+0x17e/0x1dd
[ 663.007970] ? trace_hardirqs_off_thunk+0x1a/0x1c
[ 663.008561] entry_SYSCALL_64_after_hwframe+0x49/0xb3
[ 663.009160] RIP: 0033:0x463519
[ 663.009514] Code: 00 f3 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db 59 00 00 c3 66 2e 0f 1f 84 00 00 00 00
[ 663.011584] RSP: 002b:00007ffdd67630a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037
[ 663.012421] RAX: ffffffffffffffda RBX: 0000000000000037 RCX: 0000000000463519
[ 663.013224] RDX: 0000000000000001 RSI: 0000000022000100 RDI: 000000000000016f
[ 663.014007] RBP: 00007ff25ad29000 R08: 0000000000000004 R09: 00000000ba1a1a1a
[ 663.014788] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000002
[ 663.015607] R13: 00007ff25ad29058 R14: 0000000001188850 R15: 00007ff25ad29000
[ 663.016449] irq event stamp: 6256
[ 663.016847] hardirqs last enabled at (6255): [<ffffffff8111d800>] console_unlock+0x18c/0x484
[ 663.017857] hardirqs last disabled at (6256): [<ffffffff810019a6>] trace_hardirqs_off_thunk+0x1a/0x1c
[ 663.018944] softirqs last enabled at (6242): [<ffffffff822002d6>] __do_softirq+0x2d6/0x38a
[ 663.019917] softirqs last disabled at (6237): [<ffffffff810e84a8>] irq_exit+0x67/0x82
[ 663.020793] ---[ end trace 1e34fea14895fe1f ]---
To reproduce:
# build kernel
cd linux
cp config-5.7.0-rc5-00233-gdfb537446f8bb .config
make HOSTCC=gcc-5 CC=gcc-5 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
Rong Chen
5 months
- 1
- 0
[cpumask] a7934287d8: BUG:using__this_cpu_read()in_preemptible[#]code:kworker
by kernel test robot
Greeting,
FYI, we noticed the following commit (built with gcc-7):
commit: a7934287d8a6c43811fca8ddf421b3b6091564f2 ("[PATCH 2/4] cpumask: Make cpumask_any() truly random")
url: https://github.com/0day-ci/linux/commits/Qais-Yousef/sched-rt-Distribute-...
in testcase: locktorture
with following parameters:
runtime: 300s
test: cpuhotplug
test-description: This torture test consists of creating a number of kernel threads which acquire the lock and hold it for specific amount of time, thus simulating different critical region behaviors.
test-url: https://www.kernel.org/doc/Documentation/locking/locktorture.txt
on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+----------------------------------------------------------+------------+------------+
| | bb4424cb99 | a7934287d8 |
+----------------------------------------------------------+------------+------------+
| boot_successes | 8 | 0 |
| boot_failures | 0 | 8 |
| BUG:using__this_cpu_read()in_preemptible[#]code:kworker | 0 | 8 |
| BUG:using__this_cpu_write()in_preemptible[#]code:kworker | 0 | 8 |
+----------------------------------------------------------+------------+------------+
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <rong.a.chen(a)intel.com>
[ 69.501074] BUG: using __this_cpu_read() in preemptible [00000000] code: kworker/0:1/12
[ 69.505571] caller is cpumask_any+0x14/0x70
[ 69.508332] CPU: 1 PID: 12 Comm: kworker/0:1 Not tainted 5.6.0-rc4-00110-ga7934287d8a6c #2
[ 69.512218] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 69.516270] Workqueue: events cpuset_hotplug_workfn
[ 69.519114] Call Trace:
[ 69.521394] dump_stack+0x8f/0xcb
[ 69.524026] __this_cpu_preempt_check+0xaf/0xc0
[ 69.526886] cpumask_any+0x14/0x70
[ 69.529265] partition_sched_domains_locked+0x152/0x500
[ 69.532200] rebuild_sched_domains_locked+0x5a1/0xba0
[ 69.535164] ? down_write+0x38/0x70
[ 69.537489] ? cpumask_next+0x17/0x20
[ 69.539929] ? percpu_down_write+0xa3/0x100
[ 69.542643] rebuild_sched_domains+0x1b/0x30
[ 69.545257] cpuset_hotplug_workfn+0x74e/0x1310
[ 69.547867] ? process_one_work+0x1be/0x5f0
[ 69.550317] process_one_work+0x23e/0x5f0
[ 69.552855] ? worker_thread+0xce/0x390
[ 69.555291] worker_thread+0x3c/0x390
[ 69.557624] ? process_one_work+0x5f0/0x5f0
[ 69.560003] kthread+0x145/0x170
[ 69.562255] ? kthread_park+0x90/0x90
[ 69.564666] ret_from_fork+0x3a/0x50
[ 69.567057] BUG: using __this_cpu_write() in preemptible [00000000] code: kworker/0:1/12
[ 69.570605] caller is cpumask_any+0x4d/0x70
[ 69.573025] CPU: 1 PID: 12 Comm: kworker/0:1 Not tainted 5.6.0-rc4-00110-ga7934287d8a6c #2
[ 69.576279] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 69.579764] Workqueue: events cpuset_hotplug_workfn
[ 69.582268] Call Trace:
[ 69.584206] dump_stack+0x8f/0xcb
[ 69.586294] __this_cpu_preempt_check+0xaf/0xc0
[ 69.588763] cpumask_any+0x4d/0x70
[ 69.591035] partition_sched_domains_locked+0x152/0x500
[ 69.593763] rebuild_sched_domains_locked+0x5a1/0xba0
[ 69.596343] ? down_write+0x38/0x70
[ 69.598635] ? cpumask_next+0x17/0x20
[ 69.600800] ? percpu_down_write+0xa3/0x100
[ 69.603283] rebuild_sched_domains+0x1b/0x30
[ 69.605590] cpuset_hotplug_workfn+0x74e/0x1310
[ 69.608078] ? process_one_work+0x1be/0x5f0
[ 69.610607] process_one_work+0x23e/0x5f0
[ 69.613089] ? worker_thread+0xce/0x390
[ 69.615435] worker_thread+0x3c/0x390
[ 69.617739] ? process_one_work+0x5f0/0x5f0
[ 69.620199] kthread+0x145/0x170
[ 69.622269] ? kthread_park+0x90/0x90
[ 69.624534] ret_from_fork+0x3a/0x50
[ 72.608226] smpboot: Booting Node 0 Processor 0 APIC 0x0
[ 72.623234] kvm-clock: cpu 0, msr 23b401001, secondary cpu clock
[ 72.623294] masked ExtINT on CPU#0
[ 72.655688] KVM setup async PF for cpu 0
[ 72.658605] kvm-stealtime: cpu 0, msr 23fc30040
[ 75.728553] Unregister pv shared memory for cpu 1
[ 75.741355] smpboot: CPU 1 is now offline
[ 75.749031] BUG: using __this_cpu_read() in preemptible [00000000] code: kworker/1:1/32
[ 75.753000] caller is cpumask_any+0x14/0x70
[ 75.755574] CPU: 0 PID: 32 Comm: kworker/1:1 Not tainted 5.6.0-rc4-00110-ga7934287d8a6c #2
[ 75.758960] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 75.762748] Workqueue: events cpuset_hotplug_workfn
[ 75.765380] Call Trace:
[ 75.767570] dump_stack+0x8f/0xcb
[ 75.769807] __this_cpu_preempt_check+0xaf/0xc0
[ 75.772365] cpumask_any+0x14/0x70
[ 75.774705] partition_sched_domains_locked+0x152/0x500
[ 75.777399] rebuild_sched_domains_locked+0x5a1/0xba0
[ 75.779940] ? down_write+0x38/0x70
[ 75.782189] ? cpumask_next+0x17/0x20
[ 75.784537] ? percpu_down_write+0xa3/0x100
[ 75.787181] rebuild_sched_domains+0x1b/0x30
[ 75.789560] cpuset_hotplug_workfn+0x74e/0x1310
[ 75.791999] ? process_one_work+0x1be/0x5f0
[ 75.794440] process_one_work+0x23e/0x5f0
[ 75.796702] ? worker_thread+0xce/0x390
[ 75.799062] worker_thread+0x3c/0x390
[ 75.801445] ? process_one_work+0x5f0/0x5f0
[ 75.803864] kthread+0x145/0x170
[ 75.805972] ? kthread_park+0x90/0x90
[ 75.808664] ret_from_fork+0x3a/0x50
[ 75.811162] BUG: using __this_cpu_write() in preemptible [00000000] code: kworker/1:1/32
[ 75.814497] caller is cpumask_any+0x4d/0x70
[ 75.816861] CPU: 0 PID: 32 Comm: kworker/1:1 Not tainted 5.6.0-rc4-00110-ga7934287d8a6c #2
[ 75.820558] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 75.828295] Workqueue: events cpuset_hotplug_workfn
[ 75.830705] Call Trace:
[ 75.833009] dump_stack+0x8f/0xcb
[ 75.835214] __this_cpu_preempt_check+0xaf/0xc0
[ 75.837779] cpumask_any+0x4d/0x70
[ 75.840083] partition_sched_domains_locked+0x152/0x500
[ 75.842971] rebuild_sched_domains_locked+0x5a1/0xba0
[ 75.845729] ? down_write+0x38/0x70
[ 75.848117] ? cpumask_next+0x17/0x20
[ 75.850597] ? percpu_down_write+0xa3/0x100
[ 75.853049] rebuild_sched_domains+0x1b/0x30
[ 75.855647] cpuset_hotplug_workfn+0x74e/0x1310
[ 75.858190] ? process_one_work+0x1be/0x5f0
[ 75.860745] process_one_work+0x23e/0x5f0
[ 75.863280] ? worker_thread+0xce/0x390
[ 75.865699] worker_thread+0x3c/0x390
[ 75.868085] ? process_one_work+0x5f0/0x5f0
[ 75.870592] kthread+0x145/0x170
[ 75.872739] ? kthread_park+0x90/0x90
[ 75.875055] ret_from_fork+0x3a/0x50
[ 81.896088] x86: Booting SMP configuration:
[ 81.905907] smpboot: Booting Node 0 Processor 1 APIC 0x1
[ 81.913431] kvm-clock: cpu 1, msr 23b401041, secondary cpu clock
[ 81.913488] masked ExtINT on CPU#1
[ 81.937706] KVM setup async PF for cpu 1
[ 81.940401] kvm-stealtime: cpu 1, msr 23fd30040
[ 84.980215] Unregister pv shared memory for cpu 0
[ 85.001386] smpboot: CPU 0 is now offline
[ 85.010941] BUG: using __this_cpu_read() in preemptible [00000000] code: kworker/0:2/144
[ 85.014653] caller is cpumask_any+0x14/0x70
[ 85.017195] CPU: 1 PID: 144 Comm: kworker/0:2 Not tainted 5.6.0-rc4-00110-ga7934287d8a6c #2
[ 85.020677] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 85.024172] Workqueue: events cpuset_hotplug_workfn
[ 85.026826] Call Trace:
[ 85.028689] dump_stack+0x8f/0xcb
[ 85.030943] __this_cpu_preempt_check+0xaf/0xc0
[ 85.033582] cpumask_any+0x14/0x70
[ 85.035717] partition_sched_domains_locked+0x152/0x500
[ 85.038475] rebuild_sched_domains_locked+0x5a1/0xba0
[ 85.041030] ? down_write+0x38/0x70
[ 85.043283] ? cpumask_next+0x17/0x20
[ 85.045656] ? percpu_down_write+0xa3/0x100
[ 85.048027] rebuild_sched_domains+0x1b/0x30
[ 85.050432] cpuset_hotplug_workfn+0x74e/0x1310
[ 85.052972] ? process_one_work+0x1be/0x5f0
[ 85.055616] process_one_work+0x23e/0x5f0
[ 85.057954] ? worker_thread+0xce/0x390
[ 85.060290] worker_thread+0x3c/0x390
[ 85.062673] ? process_one_work+0x5f0/0x5f0
[ 85.065007] kthread+0x145/0x170
[ 85.067219] ? kthread_park+0x90/0x90
[ 85.069517] ret_from_fork+0x3a/0x50
[ 85.071998] BUG: using __this_cpu_write() in preemptible [00000000] code: kworker/0:2/144
[ 85.075495] caller is cpumask_any+0x4d/0x70
[ 85.078053] CPU: 1 PID: 144 Comm: kworker/0:2 Not tainted 5.6.0-rc4-00110-ga7934287d8a6c #2
[ 85.081638] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 85.085139] Workqueue: events cpuset_hotplug_workfn
[ 85.087972] Call Trace:
[ 85.090133] dump_stack+0x8f/0xcb
[ 85.092449] __this_cpu_preempt_check+0xaf/0xc0
[ 85.094945] cpumask_any+0x4d/0x70
[ 85.097255] partition_sched_domains_locked+0x152/0x500
[ 85.099968] rebuild_sched_domains_locked+0x5a1/0xba0
[ 85.102690] ? down_write+0x38/0x70
[ 85.104983] ? cpumask_next+0x17/0x20
[ 85.107318] ? percpu_down_write+0xa3/0x100
[ 85.109927] rebuild_sched_domains+0x1b/0x30
[ 85.112333] cpuset_hotplug_workfn+0x74e/0x1310
[ 85.114892] ? process_one_work+0x1be/0x5f0
[ 85.117334] process_one_work+0x23e/0x5f0
[ 85.119868] ? worker_thread+0xce/0x390
[ 85.122441] worker_thread+0x3c/0x390
[ 85.124850] ? process_one_work+0x5f0/0x5f0
[ 85.127409] kthread+0x145/0x170
[ 85.129521] ? kthread_park+0x90/0x90
[ 85.136185] ret_from_fork+0x3a/0x50
[ 88.041127] smpboot: Booting Node 0 Processor 0 APIC 0x0
[ 88.047260] kvm-clock: cpu 0, msr 23b401001, secondary cpu clock
[ 88.047315] masked ExtINT on CPU#0
[ 88.080615] KVM setup async PF for cpu 0
[ 88.083215] kvm-stealtime: cpu 0, msr 23fc30040
[ 91.122185] Unregister pv shared memory for cpu 0
[ 91.136805] smpboot: CPU 0 is now offline
[ 91.142632] BUG: using __this_cpu_read() in preemptible [00000000] code: kworker/0:2/144
[ 91.146321] caller is cpumask_any+0x14/0x70
[ 91.148857] CPU: 1 PID: 144 Comm: kworker/0:2 Not tainted 5.6.0-rc4-00110-ga7934287d8a6c #2
[ 91.152441] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 91.155959] Workqueue: events cpuset_hotplug_workfn
[ 91.158633] Call Trace:
[ 91.160515] dump_stack+0x8f/0xcb
[ 91.162804] __this_cpu_preempt_check+0xaf/0xc0
[ 91.165289] cpumask_any+0x14/0x70
[ 91.167414] partition_sched_domains_locked+0x152/0x500
[ 91.170239] rebuild_sched_domains_locked+0x5a1/0xba0
[ 91.172877] ? down_write+0x38/0x70
[ 91.175155] ? cpumask_next+0x17/0x20
[ 91.177550] ? percpu_down_write+0xa3/0x100
[ 91.179958] rebuild_sched_domains+0x1b/0x30
[ 91.182500] cpuset_hotplug_workfn+0x74e/0x1310
[ 91.185112] ? process_one_work+0x1be/0x5f0
[ 91.187582] process_one_work+0x23e/0x5f0
[ 91.190095] ? worker_thread+0xce/0x390
[ 91.192481] worker_thread+0x3c/0x390
[ 91.194906] ? process_one_work+0x5f0/0x5f0
[ 91.197369] kthread+0x145/0x170
[ 91.199452] ? kthread_park+0x90/0x90
[ 91.201615] ret_from_fork+0x3a/0x50
[ 91.203878] BUG: using __this_cpu_write() in preemptible [00000000] code: kworker/0:2/144
[ 91.207496] caller is cpumask_any+0x4d/0x70
[ 91.209991] CPU: 1 PID: 144 Comm: kworker/0:2 Not tainted 5.6.0-rc4-00110-ga7934287d8a6c #2
[ 91.213556] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 91.216919] Workqueue: events cpuset_hotplug_workfn
[ 91.219450] Call Trace:
[ 91.221455] dump_stack+0x8f/0xcb
[ 91.223683] __this_cpu_preempt_check+0xaf/0xc0
[ 91.226348] cpumask_any+0x4d/0x70
[ 91.228592] partition_sched_domains_locked+0x152/0x500
[ 91.231337] rebuild_sched_domains_locked+0x5a1/0xba0
[ 91.234159] ? down_write+0x38/0x70
[ 91.236447] ? cpumask_next+0x17/0x20
[ 91.238827] ? percpu_down_write+0xa3/0x100
[ 91.241275] rebuild_sched_domains+0x1b/0x30
[ 91.248641] cpuset_hotplug_workfn+0x74e/0x1310
[ 91.251506] ? process_one_work+0x1be/0x5f0
[ 91.254775] process_one_work+0x23e/0x5f0
[ 91.257257] ? worker_thread+0xce/0x390
[ 91.259720] worker_thread+0x3c/0x390
[ 91.262119] ? process_one_work+0x5f0/0x5f0
[ 91.264523] kthread+0x145/0x170
[ 91.266890] ? kthread_park+0x90/0x90
[ 91.269381] ret_from_fork+0x3a/0x50
[ 94.185102] smpboot: Booting Node 0 Processor 0 APIC 0x0
[ 94.194225] kvm-clock: cpu 0, msr 23b401001, secondary cpu clock
[ 94.194284] masked ExtINT on CPU#0
[ 94.227621] KVM setup async PF for cpu 0
[ 94.230391] kvm-stealtime: cpu 0, msr 23fc30040
[ 97.267310] Unregister pv shared memory for cpu 0
[ 97.277923] smpboot: CPU 0 is now offline
[ 97.284802] BUG: using __this_cpu_read() in preemptible [00000000] code: kworker/0:2/144
[ 97.292569] caller is cpumask_any+0x14/0x70
[ 97.295186] CPU: 1 PID: 144 Comm: kworker/0:2 Not tainted 5.6.0-rc4-00110-ga7934287d8a6c #2
[ 97.298722] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 97.302094] Workqueue: events cpuset_hotplug_workfn
[ 97.304832] Call Trace:
[ 97.306912] dump_stack+0x8f/0xcb
[ 97.309299] __this_cpu_preempt_check+0xaf/0xc0
[ 97.311842] cpumask_any+0x14/0x70
[ 97.314204] partition_sched_domains_locked+0x152/0x500
[ 97.317091] rebuild_sched_domains_locked+0x5a1/0xba0
[ 97.319800] ? down_write+0x38/0x70
[ 97.322168] ? cpumask_next+0x17/0x20
[ 97.324453] ? percpu_down_write+0xa3/0x100
[ 97.326961] rebuild_sched_domains+0x1b/0x30
[ 97.329583] cpuset_hotplug_workfn+0x74e/0x1310
[ 97.332048] ? process_one_work+0x1be/0x5f0
[ 97.334608] process_one_work+0x23e/0x5f0
[ 97.336954] ? worker_thread+0xce/0x390
[ 97.339368] worker_thread+0x3c/0x390
[ 97.341637] ? process_one_work+0x5f0/0x5f0
[ 97.344033] kthread+0x145/0x170
[ 97.346210] ? kthread_park+0x90/0x90
[ 97.348454] ret_from_fork+0x3a/0x50
[ 97.350814] BUG: using __this_cpu_write() in preemptible [00000000] code: kworker/0:2/144
[ 97.354066] caller is cpumask_any+0x4d/0x70
[ 97.356562] CPU: 1 PID: 144 Comm: kworker/0:2 Not tainted 5.6.0-rc4-00110-ga7934287d8a6c #2
[ 97.360002] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 97.363342] Workqueue: events cpuset_hotplug_workfn
[ 97.366045] Call Trace:
[ 97.368053] dump_stack+0x8f/0xcb
[ 97.370361] __this_cpu_preempt_check+0xaf/0xc0
[ 97.372869] cpumask_any+0x4d/0x70
[ 97.375182] partition_sched_domains_locked+0x152/0x500
[ 97.378070] rebuild_sched_domains_locked+0x5a1/0xba0
[ 97.380701] ? down_write+0x38/0x70
[ 97.383118] ? cpumask_next+0x17/0x20
[ 97.385516] ? percpu_down_write+0xa3/0x100
[ 97.387933] rebuild_sched_domains+0x1b/0x30
[ 97.390302] cpuset_hotplug_workfn+0x74e/0x1310
[ 97.392884] ? process_one_work+0x1be/0x5f0
[ 97.395551] process_one_work+0x23e/0x5f0
[ 97.397888] ? worker_thread+0xce/0x390
[ 97.400253] worker_thread+0x3c/0x390
[ 97.402490] ? process_one_work+0x5f0/0x5f0
[ 97.404993] kthread+0x145/0x170
[ 97.407242] ? kthread_park+0x90/0x90
[ 97.409554] ret_from_fork+0x3a/0x50
[ 99.106901] Writes: Total: 35434807 Max/Min: 0/0 Fail: 0
[ 109.353172] smpboot: Booting Node 0 Processor 0 APIC 0x0
[ 109.388740] kvm-clock: cpu 0, msr 23b401001, secondary cpu clock
[ 109.388796] masked ExtINT on CPU#0
[ 109.443615] KVM setup async PF for cpu 0
[ 109.446345] kvm-stealtime: cpu 0, msr 23fc30040
[ 112.508187] Unregister pv shared memory for cpu 0
[ 112.515229] smpboot: CPU 0 is now offline
[ 112.519948] BUG: using __this_cpu_read() in preemptible [00000000] code: kworker/0:2/144
[ 112.523383] caller is cpumask_any+0x14/0x70
[ 112.530155] CPU: 1 PID: 144 Comm: kworker/0:2 Not tainted 5.6.0-rc4-00110-ga7934287d8a6c #2
[ 112.533776] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 112.537314] Workqueue: events cpuset_hotplug_workfn
[ 112.539926] Call Trace:
[ 112.541903] dump_stack+0x8f/0xcb
[ 112.544231] __this_cpu_preempt_check+0xaf/0xc0
[ 112.547000] cpumask_any+0x14/0x70
[ 112.549359] partition_sched_domains_locked+0x152/0x500
[ 112.552141] rebuild_sched_domains_locked+0x5a1/0xba0
[ 112.554933] ? down_write+0x38/0x70
[ 112.557276] ? cpumask_next+0x17/0x20
[ 112.559628] ? percpu_down_write+0xa3/0x100
[ 112.562486] rebuild_sched_domains+0x1b/0x30
[ 112.565144] cpuset_hotplug_workfn+0x74e/0x1310
[ 112.567700] ? process_one_work+0x1be/0x5f0
[ 112.570089] process_one_work+0x23e/0x5f0
[ 112.572424] ? worker_thread+0xce/0x390
[ 112.574794] worker_thread+0x3c/0x390
[ 112.577083] ? process_one_work+0x5f0/0x5f0
[ 112.579431] kthread+0x145/0x170
[ 112.581443] ? kthread_park+0x90/0x90
[ 112.583466] ret_from_fork+0x3a/0x50
[ 112.585688] BUG: using __this_cpu_write() in preemptible [00000000] code: kworker/0:2/144
[ 112.588903] caller is cpumask_any+0x4d/0x70
[ 112.591186] CPU: 1 PID: 144 Comm: kworker/0:2 Not tainted 5.6.0-rc4-00110-ga7934287d8a6c #2
[ 112.594570] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 112.597845] Workqueue: events cpuset_hotplug_workfn
[ 112.600392] Call Trace:
[ 112.602477] dump_stack+0x8f/0xcb
[ 112.604778] __this_cpu_preempt_check+0xaf/0xc0
[ 112.607346] cpumask_any+0x4d/0x70
[ 112.609670] partition_sched_domains_locked+0x152/0x500
[ 112.612419] rebuild_sched_domains_locked+0x5a1/0xba0
[ 112.615130] ? down_write+0x38/0x70
[ 112.617627] ? cpumask_next+0x17/0x20
[ 112.619936] ? percpu_down_write+0xa3/0x100
[ 112.622448] rebuild_sched_domains+0x1b/0x30
[ 112.624916] cpuset_hotplug_workfn+0x74e/0x1310
[ 112.627483] ? process_one_work+0x1be/0x5f0
[ 112.630192] process_one_work+0x23e/0x5f0
[ 112.632670] ? worker_thread+0xce/0x390
[ 112.634895] worker_thread+0x3c/0x390
[ 112.637239] ? process_one_work+0x5f0/0x5f0
[ 112.639832] kthread+0x145/0x170
[ 112.647876] ? kthread_park+0x90/0x90
[ 112.650142] ret_from_fork+0x3a/0x50
[ 115.561110] smpboot: Booting Node 0 Processor 0 APIC 0x0
[ 115.574240] kvm-clock: cpu 0, msr 23b401001, secondary cpu clock
[ 115.574300] masked ExtINT on CPU#0
[ 115.607548] KVM setup async PF for cpu 0
[ 115.610451] kvm-stealtime: cpu 0, msr 23fc30040
[ 118.648289] Unregister pv shared memory for cpu 1
[ 118.659140] smpboot: CPU 1 is now offline
[ 118.669405] BUG: using __this_cpu_read() in preemptible [00000000] code: kworker/1:2/167
[ 118.672719] caller is cpumask_any+0x14/0x70
[ 118.675145] CPU: 0 PID: 167 Comm: kworker/1:2 Not tainted 5.6.0-rc4-00110-ga7934287d8a6c #2
[ 118.678321] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 118.681838] Workqueue: events cpuset_hotplug_workfn
[ 118.684491] Call Trace:
[ 118.686463] dump_stack+0x8f/0xcb
[ 118.688602] __this_cpu_preempt_check+0xaf/0xc0
[ 118.690971] cpumask_any+0x14/0x70
[ 118.693063] partition_sched_domains_locked+0x152/0x500
[ 118.695702] rebuild_sched_domains_locked+0x5a1/0xba0
[ 118.698322] ? down_write+0x38/0x70
[ 118.700546] ? cpumask_next+0x17/0x20
[ 118.702883] ? percpu_down_write+0xa3/0x100
[ 118.705310] rebuild_sched_domains+0x1b/0x30
[ 118.707662] cpuset_hotplug_workfn+0x74e/0x1310
[ 118.710009] ? process_one_work+0x1be/0x5f0
[ 118.712400] process_one_work+0x23e/0x5f0
[ 118.714585] ? worker_thread+0xce/0x390
[ 118.716965] worker_thread+0x3c/0x390
[ 118.719188] ? process_one_work+0x5f0/0x5f0
[ 118.721459] kthread+0x145/0x170
[ 118.723631] ? kthread_park+0x90/0x90
[ 118.726020] ret_from_fork+0x3a/0x50
[ 118.728511] BUG: using __this_cpu_write() in preemptible [00000000] code: kworker/1:2/167
[ 118.731747] caller is cpumask_any+0x4d/0x70
[ 118.734313] CPU: 0 PID: 167 Comm: kworker/1:2 Not tainted 5.6.0-rc4-00110-ga7934287d8a6c #2
[ 118.737683] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 118.740914] Workqueue: events cpuset_hotplug_workfn
[ 118.743399] Call Trace:
[ 118.745514] dump_stack+0x8f/0xcb
[ 118.747848] __this_cpu_preempt_check+0xaf/0xc0
[ 118.750522] cpumask_any+0x4d/0x70
[ 118.752752] partition_sched_domains_locked+0x152/0x500
[ 118.755264] rebuild_sched_domains_locked+0x5a1/0xba0
[ 118.757816] ? down_write+0x38/0x70
[ 118.760109] ? cpumask_next+0x17/0x20
[ 118.762669] ? percpu_down_write+0xa3/0x100
[ 118.765308] rebuild_sched_domains+0x1b/0x30
[ 118.767876] cpuset_hotplug_workfn+0x74e/0x1310
[ 118.770286] ? process_one_work+0x1be/0x5f0
[ 118.772723] process_one_work+0x23e/0x5f0
[ 118.775191] ? worker_thread+0xce/0x390
[ 118.777766] worker_thread+0x3c/0x390
[ 118.780116] ? process_one_work+0x5f0/0x5f0
[ 118.782612] kthread+0x145/0x170
[ 118.784938] ? kthread_park+0x90/0x90
[ 118.787058] ret_from_fork+0x3a/0x50
Elapsed time: 120
qemu-img create -f qcow2 disk-vm-snb-60-0 256G
qemu-img create -f qcow2 disk-vm-snb-60-1 256G
qemu-img create -f qcow2 disk-vm-snb-60-2 256G
qemu-img create -f qcow2 disk-vm-snb-60-3 256G
qemu-img create -f qcow2 disk-vm-snb-60-4 256G
qemu-img create -f qcow2 disk-vm-snb-60-5 256G
qemu-img create -f qcow2 disk-vm-snb-60-6 256G
kvm=(
qemu-system-x86_64
-enable-kvm
-cpu SandyBridge
-kernel $kernel
-initrd initrd-vm-snb-60.cgz
-m 8192
-smp 2
-device e1000,netdev=net0
-netdev user,id=net0,hostfwd=tcp::32032-:22
-boot order=nc
-no-reboot
-watchdog i6300esb
-watchdog-action debug
-rtc base=localtime
-drive file=disk-vm-snb-60-0,media=disk,if=virtio
-drive file=disk-vm-snb-60-1,media=disk,if=virtio
-drive file=disk-vm-snb-60-2,media=disk,if=virtio
-drive file=disk-vm-snb-60-3,media=disk,if=virtio
-drive file=disk-vm-snb-60-4,media=disk,if=virtio
-drive file=disk-vm-snb-60-5,media=disk,if=virtio
-drive file=disk-vm-snb-60-6,media=disk,if=virtio
-serial stdio
-display none
-monitor null
)
append=(
ip=::::vm-snb-60::dhcp
root=/dev/ram0
user=lkp
job=/job-script
ARCH=x86_64
kconfig=x86_64-rhel-7.6-kselftests
branch=linux-devel/devel-hourly-2020041507
commit=a7934287d8a6c43811fca8ddf421b3b6091564f2
BOOT_IMAGE=/pkg/linux/x86_64-rhel-7.6-kselftests/gcc-7/a7934287d8a6c43811fca8ddf421b3b6091564f2/vmlinuz-5.6.0-rc4-00110-ga7934287d8a6c
max_uptime=1500
RESULT_ROOT=/result/locktorture/300s-cpuhotplug/vm-snb/yocto-i386-minimal-20190520.cgz/x86_64-rhel-7.6-kselftests/gcc-7/a7934287d8a6c43811fca8ddf421b3b6091564f2/3
result_service=tmpfs
selinux=0
debug
apic=debug
sysrq_always_enabled
rcupdate.rcu_cpu_stall_timeout=100
net.ifnames=0
printk.devkmsg=on
panic=-1
softlockup_panic=1
nmi_watchdog=panic
oops=panic
load_ramdisk=2
prompt_ramdisk=0
drbd.minor_count=8
systemd.log_level=err
ignore_loglevel
console=tty0
earlyprintk=ttyS0,115200
console=ttyS0,115200
vga=normal
rw
rcuperf.shutdown=0
watchdog_thresh=60
)
"${kvm[@]}" -append "${append[*]}"
To reproduce:
# build kernel
cd linux
cp config-5.6.0-rc4-00110-ga7934287d8a6c .config
make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage modules
make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 INSTALL_MOD_PATH=<mod-install-dir> modules_install
cd <mod-install-dir>
find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email
Thanks,
Rong Chen
5 months
- 1
- 0
578bf81653 ("mm/compaction: Fix the incorrect hole in .."): kernel BUG at include/linux/page-flags.h:347!
by kernel test robot
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
https://github.com/0day-ci/linux/commits/Baoquan-He/mm-page_alloc-c-Add-u...
commit 578bf816539db3f314472bf82a070d39949a7f93
Author: Baoquan He <bhe(a)redhat.com>
AuthorDate: Fri May 22 15:01:14 2020 +0800
Commit: 0day robot <lkp(a)intel.com>
CommitDate: Fri May 22 15:27:46 2020 +0800
mm/compaction: Fix the incorrect hole in fast_isolate_freepages()
On 05/21/20 at 08:18pm, Mike Rapoport wrote:
> On Thu, May 21, 2020 at 11:52:25PM +0800, Baoquan He wrote:
> > On 05/21/20 at 12:26pm, Mike Rapoport wrote:
> > > > For this kind of e820 reserved range, it won't be added to memblock allocator.
> > > > However, init_unavailable_mem() will initialize to add them into node 0,
> > > > zone 0. Before that commit, later, memmap_init() will add e820 reserved
> > > > ranges into the zone where they are contained, because it can pass
> > > > the checking of early_pfn_valid() and early_pfn_in_nid(). In this case,
> > > > the e820 reserved range where fault page 0x2a800000 is located is added
> > > > into DMA32 zone. After that commit, the e820 reserved rgions are kept
> > > > in node 0, zone 0, since we iterate over memblock regions to iniatialize
> > > > in memmap_init() instead, their node and zone won't be changed.
> > >
> > > I wonder why woudn't we add the reserved memory to memblock from the
> > > very beginning...
> > > I've tried to undestand why this was not done, but I couldn't find the
> > > reasoning behind that.
> >
> > I have added some explanation when reply to Mel. Please check that in
> > that thread.
>
> What I meant was that I've tried to find an explanation in the kernel logs
> for why the reserved areas are not added to memblock.memory on x86. I
> didn't mean that the your patch description lacks this explanation :)
Ah, I misunderstood it, sorry about that.
>
> > As I said, the unavailable range includes firmware reserved ranges, and
> > holes inside one boot memory section, if that boot memory section haves
> > useable memory range, and firmware reserved ranges, and holes. Adding
> > them all into memblock seems a little unreasonable, since they are never
> > used by system in memblock, buddy or high level memory allocator. But I
> > can see that adding them into memblock may have the same effect as the
> > old code which is beofre your your patchset applied. Let's see if Mel or
> > other people have some saying. I pesonally would not suggest doing it
> > like this though.
>
> Adding reserved regions to memblock.memory will not have the same effect
> as the old code. We anyway have to initialize struct page for these
> areas, but unlike the old code we don't need to run them by the
> early_pfn_in_nid() checks and we still get rid the
> CONFIG_NODES_SPAN_OTHER_NODES option.
Hmm, I mean adding them to memblock will let us have the same result,
they are added into the node, zone where they should be, and marked as
reserved, just as the old code did.
Rethink about this, seems adding them into memblock is doable. But
we may not need to add them from e820 reserved range, since that will
skip hole range which share the same section with usable range, and may
need to change code in different ARCHes. How about this:
We add them into memblock in init_unavailable_range(), memmap_init() will
add them into the right node and zone, reserve_bootmem_region() will
initialize them and mark them as Reserved.
From d019d0f9e7c958542dfcb142f93d07fcce6c7c22 Mon Sep 17 00:00:00 2001
From: Baoquan He <bhe(a)redhat.com>
Date: Fri, 22 May 2020 14:36:13 +0800
Subject: [PATCH] mm/page_alloc.c: Add unavailable ranges into memblock
These unavailable ranges shares the same section with the usable range
in boot memory, e.g the firmware reserved ranges, and holes.
Previously, they are added into node 0, zone 0 in function
init_unavailable_range(), and marked as Reserved. Later, in function
memmap_init(), they will be added to appropriate node and zone, where
they are covered.
However, after the patchset ("mm: rework free_area_init*() funcitons")
is applied, we change to iterate over memblock regions. These unavailable
ranges are skipped, and the node and zone adjustment won't be done any
more as the old code did. This cause a crash in compaction which is triggered
by VM_BUG_ON_PAGE(!zone_spans_pfn(page_zone(page), pfn)).
So let's add these unavailable ranges into memblock and reserve them
in init_unavailable_range() instead. With this change, they will be added
into appropriate node and zone in memmap_init(), and initialized in
reserve_bootmem_region() just like any other memblock reserved regions.
Signed-off-by: Baoquan He <bhe(a)redhat.com>
051143e160 Merge tag 'apparmor-pr-2020-05-21' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor
578bf81653 mm/compaction: Fix the incorrect hole in fast_isolate_freepages()
+------------------------------------------+------------+------------+
| | 051143e160 | 578bf81653 |
+------------------------------------------+------------+------------+
| boot_successes | 30 | 0 |
| boot_failures | 3 | 11 |
| BUG:kernel_hang_in_test_stage | 3 | |
| kernel_BUG_at_include/linux/page-flags.h | 0 | 11 |
| invalid_opcode:#[##] | 0 | 11 |
| RIP:reserve_bootmem_region | 0 | 11 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 11 |
+------------------------------------------+------------+------------+
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <lkp(a)intel.com>
[ 0.236049] page:ffffea0000000000 is uninitialized and poisoned
[ 0.236055] raw: ffffffffffffffff ffffea0000000008 ffffea0000000008 ffffffffffffffff
[ 0.238230] raw: ffffffffffffffff ffffffffffffffff ffffffffffffffff
[ 0.239227] page dumped because: VM_BUG_ON_PAGE(1 && PageCompound(page))
[ 0.240237] ------------[ cut here ]------------
[ 0.240933] kernel BUG at include/linux/page-flags.h:347!
[ 0.241752] invalid opcode: 0000 [#1] PREEMPT SMP
[ 0.242468] CPU: 0 PID: 0 Comm: swapper Not tainted 5.7.0-rc6-00075-g578bf816539db #1
[ 0.243611] RIP: 0010:reserve_bootmem_region+0x51/0x7c
[ 0.244374] Code: fb 38 48 03 3d 3e 50 b4 00 48 8d 47 08 48 89 47 08 48 89 47 10 48 8b 07 0f ba e0 10 73 0e 48 c7 c6 61 1e 50 82 e8 87 92 77 ff <0f> 0b 48 8b 47 08 a8 01 75 ea 48 83 3f ff 75 0e 48 c7 c6 31 f5 4f
[ 0.247084] RSP: 0000:ffffffff82803ea0 EFLAGS: 00010046
[ 0.247748] RAX: ffffea0000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 0.248751] RDX: 0000000000000000 RSI: 00000000000000cd RDI: ffffea0000000000
[ 0.249873] RBP: 0000000000000010 R08: 000000005fe3b8df R09: 0000000000000001
[ 0.250927] R10: 0000000000000000 R11: 0000000000000027 R12: ffffffff82803ec0
[ 0.251993] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[ 0.253048] FS: 0000000000000000(0000) GS:ffff88823fa00000(0000) knlGS:0000000000000000
[ 0.254257] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 0.255097] CR2: ffff88823ffff000 CR3: 0000000002811001 CR4: 00000000000606b0
[ 0.256145] Call Trace:
[ 0.256517] memblock_free_all+0x67/0x184
[ 0.257110] mem_init+0x1b/0x94
[ 0.257579] start_kernel+0x224/0x52b
[ 0.258128] secondary_startup_64+0xb6/0xc0
[ 0.258771] Modules linked in:
[ 0.259236] random: get_random_bytes called from init_oops_id+0x22/0x31 with crng_init=0
[ 0.259241] ---[ end trace 0000000000000000 ]---
[ 0.261118] RIP: 0010:reserve_bootmem_region+0x51/0x7c
# HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD
git bisect start b5739fd7f1768f1eee893ed650e2d85eeb48f159 9cb1fd0efd195590b828b9b865421ad345a4a145 --
git bisect bad 86b8ba66d7a3c3c10d9a1b535a9fe4acb9e36b99 # 20:39 B 0 11 27 0 Merge 'linux-review/Lubomir-Rintel/mfd-Add-ENE-KB3930-Embedded-Controller-driver/20200521-195853' into devel-hourly-2020052707
git bisect good ead70718c5e74ea7970bc7fdd2bdaf1290577e81 # 22:23 G 10 0 2 2 Merge 'linux-review/Kaitao-Cheng/trace-ftrace-fix-maybe-uninitialized-compiler-warning/20200523-235608' into devel-hourly-2020052707
git bisect bad 0976d92e93b046d9e126442530156a6cb0a41723 # 22:47 B 0 11 27 0 Merge 'linux-review/Chris-Chiu/platform-x86-asus_wmi-Reserve-more-space-for-struct-bias_args/20200522-155459' into devel-hourly-2020052707
git bisect bad 1cf9b0168f9176ec98b5177aa3f9f84e58e5b1b5 # 23:10 B 0 11 27 0 Merge 'linux-review/Chris-Chiu/ALSA-usb-mixer-volume-quirk-for-ESS-Technology-Asus-USB-DAC/20200526-142854' into devel-hourly-2020052707
git bisect bad 2927a06ea6f919b7cb3222859f127cf61263e1aa # 23:53 B 0 11 27 0 Merge 'linux-review/Willem-de-Bruijn/net-check-untrusted-gso_size-at-kernel-entry/20200526-030906' into devel-hourly-2020052707
git bisect bad e279c91abf7f69abaccddedd6ed97965035b20fc # 00:14 B 0 11 27 0 Merge 'linux-review/Sudhakar-Panneerselvam/vhost-scsi-notify-TCM-about-the-maximum-sg-entries-supported-per-command/20200523-005407' into devel-hourly-2020052707
git bisect good 0feec94b24871235546cb7852bfefc84e11e4f40 # 02:05 G 10 0 1 1 Merge 'linux-review/Dinghao-Liu/dmaengine-sprd-Fix-runtime-PM-imbalance-on-error/20200522-145623' into devel-hourly-2020052707
git bisect good 8b2a3c97d338f651a69177b9f8c148c65a98f6fd # 02:34 G 10 0 0 0 Merge 'skn/soc_custom_attr' into devel-hourly-2020052707
git bisect bad f144e69d1ccadb7cfded5782c787f4e1f760fd0c # 02:59 B 0 11 27 0 Merge 'linux-review/Baoquan-He/mm-page_alloc-c-Add-unavailable-ranges-into-memblock/20200522-152727' into devel-hourly-2020052707
git bisect bad 578bf816539db3f314472bf82a070d39949a7f93 # 03:33 B 0 11 27 0 mm/compaction: Fix the incorrect hole in fast_isolate_freepages()
# first bad commit: [578bf816539db3f314472bf82a070d39949a7f93] mm/compaction: Fix the incorrect hole in fast_isolate_freepages()
git bisect good 051143e1602d90ea71887d92363edd539d411de5 # 03:50 G 30 0 0 0 Merge tag 'apparmor-pr-2020-05-21' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor
# extra tests with debug options
git bisect bad 578bf816539db3f314472bf82a070d39949a7f93 # 04:08 B 0 11 27 0 mm/compaction: Fix the incorrect hole in fast_isolate_freepages()
# extra tests on head commit of linux-review/Baoquan-He/mm-page_alloc-c-Add-unavailable-ranges-into-memblock/20200522-152727
git bisect bad 578bf816539db3f314472bf82a070d39949a7f93 # 04:52 B 0 11 27 0 mm/compaction: Fix the incorrect hole in fast_isolate_freepages()
# bad: [578bf816539db3f314472bf82a070d39949a7f93] mm/compaction: Fix the incorrect hole in fast_isolate_freepages()
# extra tests on revert first bad commit
git bisect good 44dec8343b8e627ae77a3363658e54e3fc41cb7b # 05:39 G 11 0 1 1 Revert "mm/compaction: Fix the incorrect hole in fast_isolate_freepages()"
# good: [44dec8343b8e627ae77a3363658e54e3fc41cb7b] Revert "mm/compaction: Fix the incorrect hole in fast_isolate_freepages()"
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/lkp@lists.01.org
5 months
- 2
- 1