FYI, we noticed the following commit:
commit: 39cd5a4ba8ad845ed384f43cdf4099e4cd10fa81 ("x86/fsgsbase/64: Preserve FS/GS
state in __switch_to if FSGSBASE is on")
https://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git x86/fsgsbase
in testcase: aim9
with following parameters:
testtime: 300s
test: fork_test
cpufreq_governor: performance
test-description: Suite IX is the "AIM Independent Resource Benchmark:" the
famous synthetic benchmark.
test-url:
https://sourceforge.net/projects/aimbench/files/aim-suite9/
on test machine: 4 threads Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz with 4G memory
caused below changes:
+-------------------------------------------------+------------+------------+
| | b0f17dd81a | 39cd5a4ba8 |
+-------------------------------------------------+------------+------------+
| boot_successes | 2 | 4 |
| boot_failures | 1 | 8 |
| BUG:kernel_reboot-without-warning_in_test_stage | 1 | |
| BUG:stack_guard_page_was_hit_at#(stack_is#..#) | 0 | 8 |
| RIP:page_fault | 0 | 8 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 8 |
+-------------------------------------------------+------------+------------+
[ 121.844427] perf: interrupt took too long (3955 > 3947), lowering
kernel.perf_event_max_sample_rate to 50000
[ 122.080152] perf: interrupt took too long (4947 > 4943), lowering
kernel.perf_event_max_sample_rate to 40000
[ 122.724744] perf: interrupt took too long (6201 > 6183), lowering
kernel.perf_event_max_sample_rate to 32000
[ 211.978530] BUG: stack guard page was hit at ffffc90001773fe8 (stack is
ffffc90001774000..ffffc90001777fff)
[ 211.989358] kernel stack overflow (double-fault): 0000 [#1] SMP
[ 211.996320] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver
netconsole sr_mod cdrom sg intel_rapl ahci snd_hda_codec_realtek x86_pkg_temp_thermal
intel_powerclamp snd_hda_codec_generic libahci coretemp ppdev i915 snd_hda_intel
drm_kms_helper syscopyarea sysfillrect sysimgblt snd_hda_codec fb_sys_fops kvm
snd_hda_core irqbypass snd_hwdep crct10dif_pclmul snd_pcm crc32_pclmul pcspkr crc32c_intel
ghash_clmulni_intel cryptd snd_timer serio_raw snd libata soundcore drm shpchp wmi
parport_pc parport video ip_tables
[ 212.049322] CPU: 2 PID: 718 Comm: singleuser Not tainted 4.9.0-00014-g39cd5a4 #1
[ 212.057720] Hardware name: Hewlett-Packard HP Pro 3340 MT/17A1, BIOS 8.07 01/24/2013
[ 212.066473] task: ffff88011b6a4b80 task.stack: ffffc90001774000
[ 212.073399] RIP: 0010:[<ffffffff81957cad>] [<ffffffff81957cad>]
page_fault+0xd/0x30
[ 212.082139] RSP: 0018:ffffc90001773ff8 EFLAGS: 00010083
[ 212.088404] RAX: 000000000000d2c0 RBX: ffffc900017740e8 RCX: ffffffff81957217
[ 212.096507] RDX: 000000000000d2c0 RSI: 0000000000000000 RDI: ffffc900017740e8
[ 212.104587] RBP: ffffc900017740d8 R08: ffff88011b6a4b80 R09: 0000000000000004
[ 212.112664] R10: ffff88011fdce000 R11: 0000000000000000 R12: 0000000000000000
[ 212.120702] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000001200011
[ 212.128746] FS: 00007fea1ae04700(0000) GS:ffff88011fb00000(0000)
knlGS:ffff88011fb00000
[ 212.137744] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 212.144334] CR2: ffffc90001773fe8 CR3: 0000000116f09000 CR4: 00000000001506e0
[ 212.152348] Stack:
[ 212.155208] Call Trace:
[ 212.158478] [<ffffffff81067f86>] ? __do_page_fault+0x6/0x4d0
[ 212.165081] [<ffffffff81068480>] ? do_page_fault+0x30/0x80
[ 212.171484] [<ffffffff81957cc8>] ? page_fault+0x28/0x30
To reproduce:
git clone
git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp run job.yaml
Thanks,
Kernel Test Robot