Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
aaron/swap_numa
commit 0b444cfa6cd3db4a5954a010bc801ae6b01f464d
Author: Aaron Lu <aaron.lu(a)intel.com>
AuthorDate: Fri Mar 18 17:07:31 2016 +0800
Commit: Aaron Lu <aaron.lu(a)intel.com>
CommitDate: Fri Mar 18 17:07:31 2016 +0800
page_allocation: do not clear page after allocation
+-----------------------------------------------------+------------+------------+------------+
| | 5a430f9c20 | 0b444cfa6c |
d0d4199eb9 |
+-----------------------------------------------------+------------+------------+------------+
| boot_successes | 112 | 0 | 0
|
| boot_failures | 6 | 29 | 13
|
| BUG:unable_to_handle_kernel | 6 | 14 | 5
|
| Oops | 6 | 14 | 5
|
| EIP_is_at_perf_prepare_sample | 6 | |
|
| Kernel_panic-not_syncing:Fatal_exception | 6 | 17 | 5
|
| backtrace:iterate_dir | 3 | |
|
| backtrace:SyS_getdents64 | 3 | |
|
| EIP_is_at_kmap_atomic_prot | 0 | 9 | 3
|
| backtrace:do_execve | 0 | 12 | 4
|
| backtrace:SyS_execve | 0 | 12 | 4
|
| BUG:Bad_page_map_in_process | 0 | 13 | 4
|
| BUG:Bad_page_state_in_process | 0 | 9 | 1
|
| invoked_oom-killer:gfp_mask=0x | 0 | 7 | 2
|
| Mem-Info | 0 | 7 | 2
|
| Out_of_memory:Kill_process | 0 | 7 | 2
|
| EIP_is_at_compound_head | 0 | 5 | 1
|
| BUG:Bad_rss-counter_state_mm:#idx:#val | 0 | 5 |
|
| kernel_BUG_at_include/linux/mm.h | 0 | 3 | 1
|
| invalid_opcode:#[##] | 0 | 3 | 1
|
| invalid_opcode:#[##]DEBUG_PAGEALLOC_DEBUG_PAGEALLOC | 0 | 3 | 1
|
| EIP_is_at_put_page_testzero | 0 | 2 | 1
|
| backtrace:_do_fork | 0 | 3 |
|
| backtrace:SyS_clone | 0 | 3 |
|
| BUG:kernel_boot_hang | 0 | 8 | 6
|
| backtrace:do_group_exit | 0 | 1 |
|
| backtrace:SyS_exit_group | 0 | 1 |
|
| EIP_is_at_follow_page_mask | 0 | 1 |
|
+-----------------------------------------------------+------------+------------+------------+
[ 4.808107] rc.local[97]: segfault at 1cb7 ip 77770a5c sp 7fd7daf0 error 6
[ 4.808107] rc.local[97]: segfault at 1cb7 ip 77770a5c sp 7fd7daf0 error 6 in
ld-2.15.so[7776a000+20000] in ld-2.15.so[7776a000+20000]
[ 4.824273] BUG: Bad page map in process init pte:02434063 pmd:0b2af067
[ 4.824273] BUG: Bad page map in process init pte:02434063 pmd:0b2af067
Elapsed time: 20
qemu-system-x86_64 -enable-kvm -cpu kvm64 -kernel
/pkg/linux/i386-randconfig-i1-201611/gcc-5/0b444cfa6cd3db4a5954a010bc801ae6b01f464d/vmlinuz-4.5.0-rc4-00004-g0b444cf
-append 'hung_task_panic=1 earlyprintk=ttyS0,115200 systemd.log_level=err debug
apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1
softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0
console=ttyS0,115200 console=tty0 vga=normal root=/dev/ram0 rw
link=/kbuild-tests/run-queue/kvm/i386-randconfig-i1-201611/linux-devel:devel-catchup-201603181757:0b444cfa6cd3db4a5954a010bc801ae6b01f464d:bisect-linux-1/.vmlinuz-0b444cfa6cd3db4a5954a010bc801ae6b01f464d-20160318194046-27-intel12
branch=linux-devel/devel-catchup-201603181757
BOOT_IMAGE=/pkg/linux/i386-randconfig-i1-201611/gcc-5/0b444cfa6cd3db4a5954a010bc801ae6b01f464d/vmlinuz-4.5.0-rc4-00004-g0b444cf
drbd.minor_count=8' -initrd /osimage/quantal/quantal-core-i386.cgz -m 300 -smp 2
-device e1000,netdev=net0 -netdev user,id=net0 -boot order=nc -no-reboot -watchdog
i6300esb -rtc base=localtime -drive
file=/fs/KVM/disk0-quantal-intel12-32,media=disk,if=virtio -drive
file=/fs/KVM/disk1-quantal-intel12-32,media=disk,if=virtio -drive
file=/fs/KVM/disk2-quantal-intel12-32,media=disk,if=virtio -drive
file=/fs/KVM/disk3-quantal-intel12-32,media=disk,if=virtio -drive
file=/fs/KVM/disk4-quantal-intel12-32,media=disk,if=virtio -drive
file=/fs/KVM/disk5-quantal-intel12-32,media=disk,if=virtio -drive
file=/fs/KVM/disk6-quantal-intel12-32,media=disk,if=virtio -pidfile
/dev/shm/kboot/pid-quantal-intel12-32 -serial
file:/dev/shm/kboot/serial-quantal-intel12-32 -daemonize -display none -monitor null
git bisect start d0d4199eb9a99adbe8f940b66e66ddcf8df205b1
b562e44f507e863c6792946e4e1b1449fbbac85d --
git bisect bad 11995d1888d0e33f154abc61ec2ecb92dc68024f # 18:45 5- 25 Merge
'xtensa/for_next' into devel-catchup-201603181757
git bisect good d690e919abe1fd78c8d922d72de5821f303836e5 # 18:50 29+ 2 Merge
'wsa/i2c/for-next' into devel-catchup-201603181757
git bisect bad 23ee57a1dd5a535208a7d4711e42f14095a3b947 # 19:00 7- 30 Merge
'aaron/swap_numa' into devel-catchup-201603181757
git bisect good d345b0a8c1a7abb236fd4e32850c8fcc98b53888 # 19:11 29+ 3 Merge
'kvalo-ath/ath-qca' into devel-catchup-201603181757
git bisect good c2efa9252cad76077151a98f9c65ddfe799ff09e # 19:25 29+ 1
swap_numa: add two events for swap allocation on local/remote node
git bisect bad 0b444cfa6cd3db4a5954a010bc801ae6b01f464d # 19:41 6- 16
page_allocation: do not clear page after allocation
git bisect good 5a430f9c20a4cb8b66e0f65b987f2564305a0b5c # 19:56 29+ 1 pmem:
add 2 events for pmem local write and remote write
# first bad commit: [0b444cfa6cd3db4a5954a010bc801ae6b01f464d] page_allocation: do not
clear page after allocation
git bisect good 5a430f9c20a4cb8b66e0f65b987f2564305a0b5c # 19:58 88+ 6 pmem:
add 2 events for pmem local write and remote write
# extra tests with DEBUG_INFO
git bisect bad 0b444cfa6cd3db4a5954a010bc801ae6b01f464d # 20:16 32- 72
page_allocation: do not clear page after allocation
# extra tests on HEAD of linux-devel/devel-catchup-201603181757
git bisect bad d0d4199eb9a99adbe8f940b66e66ddcf8df205b1 # 20:16 0- 13 0day
head guard for 'devel-catchup-201603181757'
# extra tests on tree/branch aaron/swap_numa
git bisect bad 0b444cfa6cd3db4a5954a010bc801ae6b01f464d # 20:17 0- 29
page_allocation: do not clear page after allocation
# extra tests with first bad commit reverted
git bisect good fb3c9d2bb8c7f0c36b19e6b6f0c72b70e4836446 # 20:29 89+ 3 Revert
"page_allocation: do not clear page after allocation"
# extra tests on tree/branch linus/master
git bisect good 9dffdb38d864ae89e16ff7b3a09451270736e35b # 20:32 88+ 2 Merge
tag 'staging-4.6-rc1' of
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
# extra tests on tree/branch linux-next/master
git bisect good 5e3497cca281616e7930b74a0076b7324dcc2057 # 20:35 83+ 3 Add
linux-next specific files for 20160318
This script may reproduce the error.
----------------------------------------------------------------------------
#!/bin/bash
kernel=$1
initrd=quantal-core-i386.cgz
wget --no-clobber
https://github.com/fengguang/reproduce-kernel-bug/raw/master/initrd/$initrd
kvm=(
qemu-system-x86_64
-enable-kvm
-cpu kvm64
-kernel $kernel
-initrd $initrd
-m 300
-smp 2
-device e1000,netdev=net0
-netdev user,id=net0
-boot order=nc
-no-reboot
-watchdog i6300esb
-rtc base=localtime
-serial stdio
-display none
-monitor null
)
append=(
hung_task_panic=1
earlyprintk=ttyS0,115200
systemd.log_level=err
debug
apic=debug
sysrq_always_enabled
rcupdate.rcu_cpu_stall_timeout=100
panic=-1
softlockup_panic=1
nmi_watchdog=panic
oops=panic
load_ramdisk=2
prompt_ramdisk=0
console=ttyS0,115200
console=tty0
vga=normal
root=/dev/ram0
rw
drbd.minor_count=8
)
"${kvm[@]}" --append "${append[*]}"
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