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Message-ID: <20200705080005.GV3874@shao2-debian>
Date: Sun, 5 Jul 2020 16:00:05 +0800
From: kernel test robot <lkp@...el.com>
To: "Paul E. McKenney" <paulmck@...nel.org>
Cc: Ingo Molnar <mingo@...nel.org>,
LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org
Subject: [refperf] 8e4ec3d02b: error:#[##]
Greeting,
FYI, we noticed the following commit (built with gcc-9):
commit: 8e4ec3d02b549a731c94b4bcddff212bb92cdbaf ("refperf: Rename RCU_REF_PERF_TEST to RCU_REF_SCALE_TEST")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
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-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+---------------------------------------------------------+------------+------------+
| | c7dcf8106f | 8e4ec3d02b |
+---------------------------------------------------------+------------+------------+
| boot_successes | 14 | 0 |
| boot_failures | 23 | 38 |
| invoked_oom-killer:gfp_mask=0x | 5 | 4 |
| Mem-Info | 5 | 4 |
| Out_of_memory_and_no_killable_processes | 4 | 4 |
| Kernel_panic-not_syncing:System_is_deadlocked_on_memory | 4 | 4 |
| WARNING:at_kernel/trace/trace.c:#trace_find_next_entry | 18 | |
| EIP:trace_find_next_entry | 18 | |
| error:#[##] | 0 | 34 |
| EIP:main_func | 0 | 34 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 34 |
+---------------------------------------------------------+------------+------------+
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <lkp@...el.com>
[ 14.325320]
[ 14.337793] [main] Added 18 filenames from /dev
[ 14.337808]
[ 15.232694] rcu-ref-perf: Experiment #0 (Format: <THREAD-NUM>:<Total loop time in ns>)
[ 15.232694]
[ 15.238007] divide_error: 0000 [#1] PTI
[ 15.239505] CPU: 0 PID: 86 Comm: main_func Tainted: G S 5.8.0-rc3-00028-g8e4ec3d02b549 #1
[ 15.242735] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 15.249804] EIP: main_func+0x2af/0x393
[ 15.251276] Code: af f0 e8 86 f8 ff ff bf e8 03 00 00 69 ca e8 03 00 00 f7 e7 89 55 8c 89 45 88 8b 45 8c 31 ff 8d 14 01 39 d6 77 08 89 d0 31 d2 <f7> f6 89 c7 8b 4d 94 8b 45 88 f7 f6 89 7c d9 04 89 04 d9 43 e9 09
[ 15.256851] EAX: 00000000 EBX: 00000000 ECX: 00000000 EDX: 00000000
[ 15.258817] ESI: 00000000 EDI: 00000000 EBP: dc6cdf80 ESP: dc6cdf08
[ 15.260738] DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068 EFLAGS: 00010246
[ 15.262810] CR0: 80050033 CR2: 08bb0000 CR3: 33bbe000 CR4: 000406f0
[ 15.264757] Call Trace:
[ 15.265997] ? __kthread_parkme+0x3a/0x71
[ 15.267516] ? _raw_spin_unlock_irqrestore+0x34/0x40
[ 15.269216] ? tracer_hardirqs_on+0x11/0x25
[ 15.270767] ? trace_hardirqs_on+0x34/0x41
[ 15.272295] kthread+0xee/0xf3
[ 15.273636] ? srcu_ref_perf_read_section+0x69/0x69
[ 15.275325] ? kthread_create_worker_on_cpu+0x1c/0x1c
[ 15.277009] ret_from_fork+0x19/0x30
[ 15.278462] Modules linked in: psmouse parport_pc ide_pci_generic qemu_fw_cfg ide_core processor
[ 15.281552] ---[ end trace 891088ef0ed36b53 ]---
[ 15.283184] EIP: main_func+0x2af/0x393
[ 15.284632] Code: af f0 e8 86 f8 ff ff bf e8 03 00 00 69 ca e8 03 00 00 f7 e7 89 55 8c 89 45 88 8b 45 8c 31 ff 8d 14 01 39 d6 77 08 89 d0 31 d2 <f7> f6 89 c7 8b 4d 94 8b 45 88 f7 f6 89 7c d9 04 89 04 d9 43 e9 09
[ 15.290313] EAX: 00000000 EBX: 00000000 ECX: 00000000 EDX: 00000000
[ 15.292272] ESI: 00000000 EDI: 00000000 EBP: dc6cdf80 ESP: dc6cdf08
[ 15.294261] DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068 EFLAGS: 00010246
[ 15.296304] CR0: 80050033 CR2: 08bb0000 CR3: 33bbe000 CR4: 000406f0
[ 15.298264] Kernel panic - not syncing: Fatal exception
[ 15.300001] Kernel Offset: disabled
Elapsed time: 60
qemu-img create -f qcow2 disk-vm-snb-i386-61-0 256G
To reproduce:
# build kernel
cd linux
cp config-5.8.0-rc3-00028-g8e4ec3d02b549 .config
make HOSTCC=gcc-9 CC=gcc-9 ARCH=i386 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
View attachment "config-5.8.0-rc3-00028-g8e4ec3d02b549" of type "text/plain" (123174 bytes)
View attachment "job-script" of type "text/plain" (4444 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (15832 bytes)
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