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Date: Tue, 14 Jul 2015 00:16:58 +0800
From: kernel test robot <fengguang.wu@...el.com>
To: Peter Zijlstra <peterz@...radead.org>
Cc: LKP <lkp@...org>, linux-kernel@...r.kernel.org,
fengguang.wu@...el.com
Subject: [atomic] kernel BUG at lib/atomic64_test.c:74!
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git locking/arch
commit 544262583b0bd09ccd7d003ebe6dfe15e2f8cf5a
Author: Peter Zijlstra <peterz@...radead.org>
AuthorDate: Mon Jul 13 12:55:58 2015 +0200
Commit: Peter Zijlstra <peterz@...radead.org>
CommitDate: Mon Jul 13 12:57:32 2015 +0200
atomic: Add simple atomic_t tests
Add a few atomic_t tests, gets some compile coverage for the new
operations.
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
+------------------------------------------+------------+------------+------------+
| | 12db72464b | 544262583b | 90ce597ebb |
+------------------------------------------+------------+------------+------------+
| boot_successes | 67 | 0 | 0 |
| boot_failures | 0 | 3 | 39 |
| kernel_BUG_at_lib/atomic64_test.c | 0 | 3 | 39 |
| invalid_opcode | 0 | 3 | 39 |
| EIP_is_at_test_atomic64 | 0 | 3 | 39 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 3 | 39 |
| backtrace:test_atomics | 0 | 3 | 39 |
| backtrace:kernel_init_freeable | 0 | 3 | 39 |
+------------------------------------------+------------+------------+------------+
[ 0.466903] devtmpfs: initialized
[ 0.470773] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6370867519511994 ns
[ 0.473592] ------------[ cut here ]------------
[ 0.474838] kernel BUG at lib/atomic64_test.c:74!
[ 0.476351] invalid opcode: 0000 [#1] DEBUG_PAGEALLOC
[ 0.477813] Modules linked in:
[ 0.478845] CPU: 0 PID: 1 Comm: swapper Not tainted 4.2.0-rc1-00061-g5442625 #121
[ 0.480944] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014
[ 0.483505] task: d08a0000 ti: d089c000 task.ti: d089c000
[ 0.484925] EIP: 0060:[<c19cecce>] EFLAGS: 00010286 CPU: 0
[ 0.486514] EIP is at test_atomic64+0x261/0x686
[ 0.487944] EAX: 00001001 EBX: c001d00d ECX: d089def0 EDX: aaa31337
[ 0.489647] ESI: d089def0 EDI: aaa31337 EBP: d089df08 ESP: d089def0
[ 0.491379] DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068
[ 0.492949] CR0: 8005003b CR2: ffffffff CR3: 01a37000 CR4: 000006f0
[ 0.494644] Stack:
[ 0.495604] 00001001 aaa31337 d089df20 c19cf0f3 d08e5780 d089df1c d089df20 c19cf1c6
[ 0.498780] d1141ca0 00000000 c19cf1c6 20020110 d089df88 c1000522 c19af460 d089df70
[ 0.501960] c104753b 00000000 00000207 00000000 00010001 00000208 c191031c c19af460
[ 0.505024] Call Trace:
[ 0.506019] [<c19cf0f3>] ? test_atomic64+0x686/0x686
[ 0.507298] [<c19cf1c6>] test_atomics+0xd3/0x104
[ 0.508260] [<c19cf1c6>] ? test_atomics+0xd3/0x104
[ 0.509242] [<c1000522>] do_one_initcall+0x178/0x18b
[ 0.510247] [<c19af460>] ? do_early_param+0x73/0x73
[ 0.511239] [<c104753b>] ? parse_args+0x281/0x38b
[ 0.512204] [<c19af460>] ? do_early_param+0x73/0x73
[ 0.513192] [<c1055cc6>] ? up_write+0x16/0x2a
[ 0.514113] [<c19afc13>] kernel_init_freeable+0xf2/0x174
[ 0.515161] [<c19afc13>] ? kernel_init_freeable+0xf2/0x174
[ 0.516203] [<c15b61ef>] kernel_init+0x8/0xb0
[ 0.517134] [<c15bfce0>] ret_from_kernel_thread+0x20/0x30
[ 0.518184] [<c15b61e7>] ? rest_init+0x10e/0x10e
[ 0.519140] Code: 37 13 a3 aa bb 0d d0 01 c0 e8 ef 2f 81 ff 81 65 e8 01 35 50 21 89 f1 e8 d1 2f 81 ff 81 fa 10 01 02 20 75 07 3d 01 10 00 00 74 02 <0f> 0b b9 37 13 a3 aa bb 0d d0 01 c0 e8 c1 2f 81 ff b8 22 22 22
[ 0.526381] EIP: [<c19cecce>] test_atomic64+0x261/0x686 SS:ESP 0068:d089def0
[ 0.527750] ---[ end trace ede0349e1a41d457 ]---
[ 0.528705] Kernel panic - not syncing: Fatal exception
git bisect start 90ce597ebb6e92cc2d9695306fe141a45869464e abf9b5f800eb13e53543ff284177efb538dc68fd --
git bisect bad 469978279a282167615298f696da95ea7ca1be2e # 20:36 0- 3 Merge branch 'locking/core'
git bisect bad f4b31f57ea4ac794e19499b0673b31f18a2cf342 # 20:48 0- 2 Merge branch 'locking/arch'
git bisect good c3f6c60f34ac5ec3ae590c39d549774f3833b327 # 20:59 22+ 0 parisc: Provide atomic_{or,xor,and}
git bisect good adc3b759a265a995243110d0e57a53c80f306725 # 21:07 22+ 0 frv: Rewrite atomic implementation
git bisect good 41931052ec21f1a957257ba12fbcf457102f0259 # 21:16 22+ 0 atomic: Provide atomic_{or,xor,and}
git bisect good 12db72464b0932998b35e5f15ac3a140fe969983 # 21:36 22+ 0 atomic: Replace atomic_{set,clear}_mask() usage
git bisect bad 544262583b0bd09ccd7d003ebe6dfe15e2f8cf5a # 21:36 0- 2 atomic: Add simple atomic_t tests
# first bad commit: [544262583b0bd09ccd7d003ebe6dfe15e2f8cf5a] atomic: Add simple atomic_t tests
git bisect good 12db72464b0932998b35e5f15ac3a140fe969983 # 21:38 63+ 0 atomic: Replace atomic_{set,clear}_mask() usage
# extra tests with DEBUG_INFO
git bisect bad 544262583b0bd09ccd7d003ebe6dfe15e2f8cf5a # 21:48 0- 33 atomic: Add simple atomic_t tests
# extra tests on HEAD of peterz-queue/master
git bisect bad 90ce597ebb6e92cc2d9695306fe141a45869464e # 21:48 0- 17 Merge branch 'perf/core'
# extra tests on tree/branch peterz-queue/locking/arch
git bisect good d3b731eb1c8f4db32a3810b8c62d484b8e61b9f7 # 22:42 66+ 0 atomic: Add simple atomic_t tests
# extra tests with first bad commit reverted
git bisect good 1583b7d4aabce15a5c1a2f003fff78030d2a0cf5 # 23:11 66+ 2 Revert "atomic: Add simple atomic_t tests"
# extra tests on tree/branch linus/master
git bisect good bc0195aad0daa2ad5b0d76cce22b167bc3435590 # 00:12 66+ 9 Linux 4.2-rc2
# extra tests on tree/branch next/master
git bisect good 2eb62d762a2112579f259903e62ba18d16c51f66 # 00:16 66+ 2 Add linux-next specific files for 20150713
This script may reproduce the error.
----------------------------------------------------------------------------
#!/bin/bash
kernel=$1
kvm=(
qemu-system-x86_64
-enable-kvm
-cpu kvm64
-kernel $kernel
-m 300
-smp 2
-device e1000,netdev=net0
-netdev user,id=net0
-boot order=nc
-no-reboot
-watchdog i6300esb
-rtc base=localtime
-serial stdio
-display none
-monitor null
)
append=(
hung_task_panic=1
earlyprintk=ttyS0,115200
systemd.log_level=err
debug
apic=debug
sysrq_always_enabled
rcupdate.rcu_cpu_stall_timeout=100
panic=-1
softlockup_panic=1
nmi_watchdog=panic
oops=panic
load_ramdisk=2
prompt_ramdisk=0
console=ttyS0,115200
console=tty0
vga=normal
root=/dev/ram0
rw
drbd.minor_count=8
)
"${kvm[@]}" --append "${append[*]}"
----------------------------------------------------------------------------
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/lkp Intel Corporation
View attachment "dmesg-quantal-ivb42-16:20150713191000:i386-randconfig-i0-201528:4.2.0-rc1-00061-g5442625:121" of type "text/plain" (29621 bytes)
View attachment "config-4.2.0-rc1-00061-g5442625" of type "text/plain" (109897 bytes)
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