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Message-ID: <20190416010123.GF24200@shao2-debian>
Date: Tue, 16 Apr 2019 09:01:24 +0800
From: kernel test robot <rong.a.chen@...el.com>
To: "Paul E. McKenney" <paulmck@...ux.ibm.com>
Cc: LKML <linux-kernel@...r.kernel.org>,
"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>, lkp@...org
Subject: [torture] 33e04e4512: BUG:unable_to_handle_kernel
FYI, we noticed the following commit (built with gcc-7):
commit: 33e04e4512797b5e0242f452d0027b096d43d006 ("torture: Allow inter-stutter interval to be specified")
https://git.kernel.org/cgit/linux/kernel/git/paulmck/linux-rcu.git dev.2019.04.09b
in testcase: rcutorture
with following parameters:
runtime: 300s
test: default
torture_type: tasks
test-description: rcutorture is rcutorture kernel module load/unload test.
test-url: https://www.kernel.org/doc/Documentation/RCU/torture.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):
+--------------------------------------------------------------------+------------+------------+
| | 7c932cda19 | 33e04e4512 |
+--------------------------------------------------------------------+------------+------------+
| boot_successes | 23 | 16 |
| boot_failures | 21 | 31 |
| WARNING:at_kernel/rcu/rcutorture.c:#rcu_torture_writer[rcutorture] | 14 | 13 |
| RIP:rcu_torture_writer[rcutorture] | 14 | 13 |
| BUG:kernel_reboot-without-warning_in_test_stage | 7 | |
| BUG:soft_lockup-CPU##stuck_for#s | 0 | 5 |
| RIP:free_unref_page | 0 | 1 |
| Kernel_panic-not_syncing:softlockup:hung_tasks | 0 | 5 |
| BUG:kernel_hang_in_boot-around-mounting-root_stage | 0 | 1 |
| RIP:free_reserved_area | 0 | 4 |
| BUG:unable_to_handle_kernel | 0 | 12 |
| Oops:#[##] | 0 | 12 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 12 |
+--------------------------------------------------------------------+------------+------------+
[ 20.150080] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
[ 20.153862] tasks-torture: torture_shuffle task started
[ 20.154767] #PF error: [INSTR]
[ 20.161581] PGD 0 P4D 0
[ 20.164301] Oops: 0010 [#1] SMP PTI
[ 20.167187] CPU: 1 PID: 573 Comm: modprobe Not tainted 5.1.0-rc1-00105-g33e04e4 #2
[ 20.171616] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[ 20.176345] RIP: 0010: (null)
[ 20.179630] Code: Bad RIP value.
[ 20.182604] RSP: 0000:ffffa7a78140fc90 EFLAGS: 00010206
[ 20.186045] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
[ 20.190299] RDX: ffff89d7eb824200 RSI: ffffffffc03b1040 RDI: ffffffffc03b1020
[ 20.194170] RBP: ffffffffc03ffd88 R08: ffff89d825f7b9c0 R09: ffff89d707c03980
[ 20.198134] R10: 0000000000000001 R11: 0000000000000000 R12: ffffffffc041d338
[ 20.201975] R13: ffffffffc041d368 R14: ffffffffc0402500 R15: ffffffffc04026c0
[ 20.205845] FS: 00007faf0abb6700(0000) GS:ffff89d83fd00000(0000) knlGS:0000000000000000
[ 20.210047] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 20.213575] CR2: ffffffffffffffd6 CR3: 00000001eb806000 CR4: 00000000000006e0
[ 20.217485] Call Trace:
[ 20.220067] rcu_torture_init+0x534/0x1000 [rcutorture]
[ 20.223381] ? 0xffffffffc0432000
[ 20.226264] do_one_initcall+0x46/0x1e4
[ 20.230720] ? _cond_resched+0x19/0x30
[ 20.233990] ? kmem_cache_alloc_trace+0x3b/0x1d0
[ 20.237322] do_init_module+0x5b/0x210
[ 20.240222] load_module+0x1871/0x1f40
[ 20.243058] ? ima_post_read_file+0xe2/0x120
[ 20.245953] ? __do_sys_finit_module+0xe9/0x110
[ 20.248898] __do_sys_finit_module+0xe9/0x110
[ 20.251851] do_syscall_64+0x5b/0x1a0
[ 20.254414] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 20.257372] RIP: 0033:0x7faf0a6e1229
[ 20.259934] 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 73 01 c3 48 8b 0d 3f 4c 2b 00 f7 d8 64 89 01 48
[ 20.268666] RSP: 002b:00007ffc8cb92a48 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[ 20.272501] RAX: ffffffffffffffda RBX: 0000561e8de3e3d0 RCX: 00007faf0a6e1229
[ 20.276305] RDX: 0000000000000000 RSI: 0000561e8de3d510 RDI: 0000000000000005
[ 20.280050] RBP: 0000561e8de3d510 R08: 0000000000000000 R09: 000000000000000e
[ 20.283826] R10: 0000000000000005 R11: 0000000000000246 R12: 0000000000000000
[ 20.293063] R13: 0000561e8de3e4e0 R14: 0000000000040000 R15: 0000561e8de3d4d0
[ 20.296743] Modules linked in: rcutorture(+) torture sr_mod cdrom bochs_drm sg ttm drm_kms_helper ppdev crct10dif_pclmul crc32_pclmul crc32c_intel ata_generic ghash_clmulni_intel pata_acpi syscopyarea sysfillrect sysimgblt fb_sys_fops snd_pcm aesni_intel snd_timer drm ata_piix snd crypto_simd cryptd libata joydev soundcore glue_helper serio_raw pcspkr parport_pc i2c_piix4 parport floppy ip_tables
[ 20.314280] CR2: 0000000000000000
[ 20.317405] ---[ end trace ba8f2eb0ce74c268 ]---
To reproduce:
# build kernel
cd linux
cp config-5.1.0-rc1-00105-g33e04e4 .config
make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 olddefconfig
make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 prepare
make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 modules_prepare
make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 SHELL=/bin/bash
make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 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
View attachment "config-5.1.0-rc1-00105-g33e04e4" of type "text/plain" (188652 bytes)
View attachment "job-script" of type "text/plain" (4730 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (14772 bytes)
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