[lkp-robot] [ALSA] fcc88d91cd: WARNING:at_sound/hda/hdac_i915.c:#snd_hdac_i915_init[snd_hda_core]
by kernel test robot
FYI, we noticed the following commit:
commit: fcc88d91cd36d1343a0ccc09444b21f6b0dad2d8 ("ALSA: hda - Bind with i915 component before codec binding")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
in testcase: netperf
with following parameters:
ip: ipv4
runtime: 900s
nr_threads: 25%
cluster: cs-localhost
test: TCP_STREAM
cpufreq_governor: performance
test-description: Netperf is a benchmark that can be use to measure various aspect of networking performance.
test-url: http://www.netperf.org/netperf/
on test machine: 8 threads Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz with 8G memory
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+--------------------------------------------------------------------+------------+------------+
| | 17890880bb | fcc88d91cd |
+--------------------------------------------------------------------+------------+------------+
| boot_successes | 0 | 2 |
| boot_failures | 2 | 5 |
| invoked_oom-killer:gfp_mask=0x | 2 | |
| Mem-Info | 2 | |
| Kernel_panic-not_syncing:Out_of_memory_and_no_killable_processes | 2 | |
| WARNING:at_drivers/gpu/drm/drm_vblank.c:#drm_wait_one_vblank[drm] | 0 | 1 |
| WARNING:at_sound/hda/hdac_i915.c:#snd_hdac_i915_init[snd_hda_core] | 0 | 4 |
+--------------------------------------------------------------------+------------+------------+
[ 12.300573] WARNING: CPU: 2 PID: 263 at sound/hda/hdac_i915.c:367 snd_hdac_i915_init+0x15a/0x17d [snd_hda_core]
[ 12.300573] Modules linked in: aesni_intel(+) crypto_simd glue_helper snd_hda_intel snd_pcsp(-) libahci dcdbas cryptd pcspkr snd_hda_codec libata shpchp snd_hda_core drm_kms_helper snd_hwdep syscopyarea sysfillrect sysimgblt snd_pcm fb_sys_fops snd_timer snd drm soundcore video ip_tables
[ 12.300584] CPU: 2 PID: 263 Comm: kworker/2:2 Not tainted 4.12.0-rc2-00040-gfcc88d91 #1
[ 12.300585] Hardware name: Dell Inc. OptiPlex 9020/0DNKMN, BIOS A05 12/05/2013
[ 12.300588] Workqueue: events azx_probe_work [snd_hda_intel]
[ 12.300589] task: ffff88021b954b80 task.stack: ffffc90001544000
[ 12.300593] RIP: 0010:snd_hdac_i915_init+0x15a/0x17d [snd_hda_core]
[ 12.300594] RSP: 0018:ffffc90001547dc0 EFLAGS: 00010282
[ 12.300595] RAX: ffff8801f8d23000 RBX: ffff88021ccca0c0 RCX: dead000000000200
[ 12.300596] RDX: 0000000000000001 RSI: ffffffff81fd6a48 RDI: ffff88021bb6c000
[ 12.300596] RBP: ffffc90001547de8 R08: 0000000000000129 R09: ffff88021cf46000
[ 12.300597] R10: ffffc9000159bac8 R11: 00000000000002e1 R12: ffff88021ea9b6c0
[ 12.300598] R13: ffff88021ea9f700 R14: ffff8801f8d230a0 R15: ffff88021bb6c000
[ 12.300599] FS: 0000000000000000(0000) GS:ffff88021ea80000(0000) knlGS:0000000000000000
[ 12.300600] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 12.300600] CR2: 00007f9bd1f0fec0 CR3: 000000021b86e000 CR4: 00000000001406e0
[ 12.300601] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 12.300602] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 12.300602] Call Trace:
[ 12.300608] azx_probe_continue+0x53e/0x930 [snd_hda_intel]
[ 12.300611] azx_probe_work+0x15/0x20 [snd_hda_intel]
[ 12.300615] process_one_work+0x198/0x3e0
[ 12.300617] worker_thread+0x4e/0x3e0
[ 12.300618] kthread+0x114/0x150
[ 12.300620] ? process_one_work+0x3e0/0x3e0
[ 12.300621] ? kthread_create_on_node+0x40/0x40
[ 12.300623] ret_from_fork+0x2c/0x40
[ 12.300624] Code: e2 4c 89 f7 48 c7 c6 c0 f0 14 a0 48 c7 05 3b 58 00 00 00 00 00 00 e8 26 6f 4c e1 48 83 c4 08 44 89 e0 5b 41 5c 41 5d 41 5e 5d c3 <0f> ff 41 bc f0 ff ff ff 48 83 c4 08 5b 44 89 e0 41 5c 41 5d 41
[ 12.300644] ---[ end trace bd205da3ac029498 ]---
To reproduce:
git clone https://github.com/01org/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp run job.yaml
Thanks,
Xiaolong
2 years, 9 months
[lkp-robot] [perf symbols] 81a648938f: perf-sanity-tests.Object_code_reading.fail
by kernel test robot
FYI, we noticed the following commit:
commit: 81a648938fc985a59040f35c1883c403c1befc7c ("perf symbols: Use already loaded module dso when loading kcore")
https://git.kernel.org/cgit/linux/kernel/git/namhyung/linux-perf.git perf/kmod-dir-v1
in testcase: perf-sanity-tests
with following parameters:
on test machine: qemu-system-x86_64 -enable-kvm -cpu host -smp 4 -m 5G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
2017-06-29 12:36:29 sudo /usr/src/linux-perf-x86_64-rhel-7.2-81a648938fc985a59040f35c1883c403c1befc7c/tools/perf/perf test
1: vmlinux symtab matches kallsyms : Skip
2: Detect openat syscall event : Ok
3: Detect openat syscall event on all cpus : Ok
4: Read samples using the mmap interface : Ok
5: Parse event definition strings : Ok
6: Simple expression parser : Ok
7: PERF_RECORD_* events & perf_sample fields : Ok
8: Parse perf pmu format : Ok
9: DSO data read : Ok
10: DSO data cache : Ok
11: DSO data reopen : Ok
12: Roundtrip evsel->name : Ok
13: Parse sched tracepoints fields : Ok
14: syscalls:sys_enter_openat event fields : Ok
15: Setup struct perf_event_attr : Skip
16: Match and link multiple hists : Ok
17: 'import perf' in python : Ok
18: Breakpoint overflow signal handler : Ok
19: Breakpoint overflow sampling : Ok
20: Number of exit events of a simple workload : Ok
21: Software clock events period values : Ok
22: Object code reading : FAILED!
23: Sample parsing : Ok
24: Use a dummy software event to keep tracking: Ok
25: Parse with no sample_id_all bit set : Ok
26: Filter hist entries : Ok
27: Lookup mmap thread : Ok
28: Share thread mg : Ok
29: Sort output of hist entries : Ok
30: Cumulate child hist entries : Ok
31: Track with sched_switch : Ok
32: Filter fds with revents mask in a fdarray : Ok
33: Add fd to a fdarray, making it autogrow : Ok
34: kmod_path__parse : Ok
35: Thread map : Ok
36: LLVM search and compile :
36.1: Basic BPF llvm compile : Skip
36.2: kbuild searching : Skip
36.3: Compile source for BPF prologue generation: Skip
36.4: Compile source for BPF relocation : Skip
37: Session topology : Ok
38: BPF filter :
38.1: Basic BPF filtering : Skip
38.2: BPF pinning : Skip
38.3: BPF prologue generation : Skip
38.4: BPF relocation checker : Skip
39: Synthesize thread map : Ok
40: Remove thread map : Ok
41: Synthesize cpu map : Ok
42: Synthesize stat config : Ok
43: Synthesize stat : Ok
44: Synthesize stat round : Ok
45: Synthesize attr update : Ok
46: Event times : Ok
47: Read backward ring buffer : Ok
48: Print cpu map : Ok
49: Probe SDT events : Skip
50: is_printable_array : Ok
51: Print bitmap : Ok
52: perf hooks : Ok
53: builtin clang support : Skip (not compiled in)
54: unit_number__scnprintf : Ok
55: x86 rdpmc : Ok
56: Convert perf time to TSC : Ok
57: DWARF unwind : Ok
58: x86 instruction decoder - new instructions : Ok
59: Intel cqm nmi context read : Skip
To reproduce:
git clone https://github.com/01org/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
Xiaolong
2 years, 9 months
[lkp-robot] [sched/fair] 7d894e6e34: netperf.Throughput_Mbps 5.9% improvement
by kernel test robot
Greeting,
FYI, we noticed a 5.9% improvement of netperf.Throughput_Mbps due to commit:
commit: 7d894e6e34a5cdd12309c7e4a3f830277ad4b7bf ("sched/fair: Simplify wake_affine() for the single socket case")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
in testcase: netperf
on test machine: 16 threads Intel(R) Xeon(R) CPU D-1541 @ 2.10GHz with 8G memory
with following parameters:
ip: ipv4
runtime: 300s
nr_threads: 200%
cluster: cs-localhost
send_size: 10K
test: SCTP_STREAM_MANY
cpufreq_governor: performance
test-description: Netperf is a benchmark that can be use to measure various aspect of networking performance.
test-url: http://www.netperf.org/netperf/
Details are as below:
-------------------------------------------------------------------------------------------------->
To reproduce:
git clone https://github.com/01org/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp run job.yaml
testcase/path_params/tbox_group/run: netperf/ipv4-300s-200%-cs-localhost-10K-SCTP_STREAM_MANY-performance/lkp-bdw-de1
739294fb03f59040 7d894e6e34a5cdd12309c7e4a3
---------------- --------------------------
%stddev %change %stddev
\ | \
2449 ± 0% +5.9% 2593 ± 1% netperf.Throughput_Mbps
33805 ± 0% -38.5% 20796 ± 15% netperf.time.involuntary_context_switches
782.00 ± 0% +25.6% 982.50 ± 5% netperf.time.percent_of_cpu_this_job_got
2332 ± 0% +25.1% 2918 ± 5% netperf.time.system_time
26.68 ± 1% +93.5% 51.63 ± 11% netperf.time.user_time
743311 ± 0% +1596.2% 12608348 ± 23% netperf.time.voluntary_context_switches
4230 ± 0% +11.1% 4700 ± 2% slabinfo.kmalloc-256.active_objs
491891 ± 0% -62.9% 182703 ± 40% softirqs.SCHED
11.00 ± 0% +197.7% 32.75 ± 16% vmstat.procs.r
526511 ± 0% -50.4% 261089 ± 25% vmstat.system.cs
17715 ± 0% -3.1% 17170 ± 1% vmstat.system.in
31.28 ± 0% -63.9% 11.28 ± 45% mpstat.cpu.idle%
9.60 ± 0% +42.9% 13.72 ± 8% mpstat.cpu.soft%
57.82 ± 0% +26.0% 72.87 ± 5% mpstat.cpu.sys%
1.30 ± 1% +64.1% 2.13 ± 10% mpstat.cpu.usr%
33805 ± 0% -38.5% 20796 ± 15% time.involuntary_context_switches
782.00 ± 0% +25.6% 982.50 ± 5% time.percent_of_cpu_this_job_got
2332 ± 0% +25.1% 2918 ± 5% time.system_time
26.68 ± 1% +93.5% 51.63 ± 11% time.user_time
743311 ± 0% +1596.2% 12608348 ± 23% time.voluntary_context_switches
1.181e+09 ± 0% -68.3% 3.743e+08 ± 51% cpuidle.C1.time
79085894 ± 0% -67.2% 25933102 ± 51% cpuidle.C1.usage
[*] bisect-good sample
[O] bisect-bad sample
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
Thanks,
Xiaolong
2 years, 9 months
[lkp-robot] [sched/numa] 3fed382b46: hackbench.throughput -9.8% regression
by kernel test robot
Greeting,
FYI, we noticed a -9.8% regression of hackbench.throughput due to commit:
commit: 3fed382b46baac83703130fe4cd3d9147f427fb9 ("sched/numa: Implement NUMA node level wake_affine()")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
in testcase: hackbench
on test machine: 12 threads Intel(R) Atom(R) CPU 3958 @ 2.00GHz with 64G memory
with following parameters:
nr_threads: 50%
mode: threads
ipc: pipe
cpufreq_governor: performance
test-description: Hackbench is both a benchmark and a stress test for the Linux kernel scheduler.
test-url: https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/sc...
Details are as below:
-------------------------------------------------------------------------------------------------->
To reproduce:
git clone https://github.com/01org/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp run job.yaml
testcase/path_params/tbox_group/run: hackbench/50%-threads-pipe-performance/lkp-denverton3
7d894e6e34a5cdd1 3fed382b46baac83703130fe4c
---------------- --------------------------
42031 -10% 37920 hackbench.throughput
5.792e+08 16% 6.694e+08 hackbench.time.voluntary_context_switches
603 5% 631 hackbench.time.elapsed_time
603 5% 631 hackbench.time.elapsed_time.max
58567750 59709574 hackbench.time.involuntary_context_switches
502 -3% 485 hackbench.time.user_time
1456 -4% 1393 hackbench.time.percent_of_cpu_this_job_got
14747 -6% 13935 hackbench.time.minor_page_faults
104278 5% 109719 interrupts.CAL:Function_call_interrupts
746913 5% 782073 vmstat.system.in
1190120 13% 1349585 vmstat.system.cs
19981084 61% 32149358 perf-stat.cpu-migrations
0.56 0.55 perf-stat.ipc
0.75 4% 0.78 perf-stat.branch-miss-rate%
1.457e+10 5% 1.534e+10 perf-stat.branch-misses
3.12e+10 3.076e+10 perf-stat.iTLB-load-misses
1.937e+12 1.965e+12 perf-stat.branch-instructions
1.028e+13 1.042e+13 perf-stat.instructions
0.30 0.29 perf-stat.iTLB-load-miss-rate%
7.206e+08 19% 8.549e+08 perf-stat.context-switches
329.37 338.63 perf-stat.instructions-per-iTLB-miss
633466 5% 667986 perf-stat.page-faults
633460 5% 667986 perf-stat.minor-faults
4.053e+11 10% 4.465e+11 perf-stat.cache-references
1.027e+13 1.041e+13 perf-stat.iTLB-loads
1.843e+13 1.893e+13 perf-stat.cpu-cycles
6.566e+10 6.43e+10 perf-stat.cache-misses
16.20 -11% 14.40 perf-stat.cache-miss-rate%
perf-stat.cpu-migrations
3.4e+07 ++----------------------------------------------------------------+
O O O O |
3.2e+07 ++ O O O |
3e+07 ++ O O O |
| O O O O O O O O O O O |
2.8e+07 ++ O O |
| |
2.6e+07 ++ |
| |
2.4e+07 ++ |
2.2e+07 ++ .* |
*..*.*..*.*..*.*..*.*..*.*..*.*..*.. .*. + .*..*. |
2e+07 ++ *.*..* *..* *..*.*..*
| |
1.8e+07 ++----------------------------------------------------------------+
hackbench.throughput
43000 ++------------------------------------------------------------------+
| .*. .*.. |
42000 ++ .*. *. *.*..*..*.*..*.*..*
41000 ++ .*..*. .*.. .*.. .* |
*..*.*..*.*. *..*..* * *. |
40000 ++ |
| |
39000 ++ |
| |
38000 O+ O O O O O O |
37000 ++ O O O O O O |
| O O O O O O O |
36000 ++ O |
| O O |
35000 ++------------------------------------------------------------------+
[*] bisect-good sample
[O] bisect-bad sample
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
Thanks,
Xiaolong
2 years, 9 months
[lkp-robot] [net] 0b7266402f: kernel_BUG_at_mm/slab_common.c
by kernel test robot
FYI, we noticed the following commit:
commit: 0b7266402fc6ebfa0af7488f34dc113696511fdd ("net: define usercopy region in struct proto slab cache")
https://git.kernel.org/cgit/linux/kernel/git/kees/linux.git kspp/usercopy-whitelist/20170619
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-x86_64 -enable-kvm -smp 2 -m 420M
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+------------------------------------------+------------+------------+
| | dca6814884 | 0b7266402f |
+------------------------------------------+------------+------------+
| boot_successes | 16 | 0 |
| boot_failures | 0 | 16 |
| kernel_BUG_at_mm/slab_common.c | 0 | 16 |
| invalid_opcode:#[##] | 0 | 16 |
| EIP:kmem_cache_create_usercopy | 0 | 16 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 16 |
+------------------------------------------+------------+------------+
[ 10.025445] kernel BUG at mm/slab_common.c:469!
[ 10.026006] invalid opcode: 0000 [#1]
[ 10.026337] Modules linked in:
[ 10.026613] CPU: 0 PID: 1 Comm: swapper Not tainted 4.12.0-rc5-00027-g0b72664 #1
[ 10.027265] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[ 10.028150] task: c026e000 task.stack: c0270000
[ 10.028549] EIP: kmem_cache_create_usercopy+0x2d8/0x320
[ 10.028993] EFLAGS: 00210203 CPU: 0
[ 10.029325] EAX: 00000000 EBX: c1db6300 ECX: 00000000 EDX: 00000001
[ 10.029851] ESI: 00000498 EDI: 00000000 EBP: c0271ed8 ESP: c0271eb0
[ 10.030381] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 10.030834] CR0: 80050033 CR2: 00000000 CR3: 01ee8000 CR4: 000006f0
[ 10.031381] Call Trace:
[ 10.031598] ? __mutex_unlock_slowpath+0xb6/0x3b0
[ 10.031998] proto_register+0x55/0x240
[ 10.032326] sctp_init+0x2f2/0x3bd
[ 10.032620] ? sctp_defaults_init+0x2e8/0x2e8
[ 10.032992] do_one_initcall+0x38/0x1a0
[ 10.033349] ? parse_args+0x1ac/0x2f0
[ 10.033668] ? kernel_init_freeable+0xe2/0x17a
[ 10.034049] kernel_init_freeable+0x102/0x17a
[ 10.034438] ? rest_init+0xb0/0xb0
[ 10.034738] kernel_init+0x10/0x100
[ 10.035041] ? schedule_tail_wrapper+0x9/0x10
[ 10.035423] ret_from_fork+0x19/0x30
[ 10.035732] Code: ff ff ff 89 45 08 e9 1d ff ff ff 90 8d b4 26 00 00 00 00 c7 04 24 00 00 00 00 31 c9 ba 01 00 00 00 b8 c0 5b de c1 e8 78 a6 f9 ff <0f> 0b 8d b6 00 00 00 00 0f 0b c7 04 24 58 20 c3 c1 e8 1a 7e fd
[ 10.037391] EIP: kmem_cache_create_usercopy+0x2d8/0x320 SS:ESP: 0068:c0271eb0
[ 10.038029] ---[ end trace 5e68488e73a534a7 ]---
To reproduce:
git clone https://github.com/01org/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
Xiaolong
2 years, 9 months
[net] 5d5d53d1ee: kernel_BUG_at_mm/slab_common.c
by kernel test robot
FYI, we noticed the following commit:
commit: 5d5d53d1ee1e58126cdeb9fdc8634dfc196304b8 ("net: define usercopy region in struct proto slab cache")
https://github.com/dwindsor/kspp slabcache-usercopy
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-x86_64 -enable-kvm -cpu Westmere -m 512M
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+------------------------------------------+------------+------------+
| | c65a6ce0ad | 5d5d53d1ee |
+------------------------------------------+------------+------------+
| boot_successes | 8 | 0 |
| boot_failures | 0 | 19 |
| kernel_BUG_at_mm/slab_common.c | 0 | 19 |
| invalid_opcode:#[##] | 0 | 19 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 19 |
+------------------------------------------+------------+------------+
[ 4.342086] kernel BUG at mm/slab_common.c:466!
[ 4.343795] invalid opcode: 0000 [#1] SMP
[ 4.344983] Modules linked in:
[ 4.346029] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.12.0-rc4-next-20170609-00015-g5d5d53d #1
[ 4.346031] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[ 4.346031] task: ffff880012e58000 task.stack: ffffc900000d0000
[ 4.346031] RIP: 0010:kmem_cache_create_usercopy+0x6e/0x17b
[ 4.346031] RSP: 0000:ffffc900000d3e00 EFLAGS: 00010213
[ 4.346031] RAX: 0000000000000000 RBX: 0000000000002000 RCX: 0000000000000000
[ 4.346031] RDX: ffff880012e58000 RSI: 00000000000000ee RDI: ffffffff81eca2d6
[ 4.346031] RBP: ffffc900000d3e40 R08: 0000000000000484 R09: fffffffffffffb8c
[ 4.346031] R10: fffffffffffffc00 R11: 0000000000001f61 R12: 00000000000004f0
[ 4.346031] R13: fffffffffffffb8c R14: ffffffff824118c5 R15: 0000000000000484
[ 4.346031] FS: 0000000000000000(0000) GS:ffff88001f800000(0000) knlGS:0000000000000000
[ 4.346031] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4.346031] CR2: 0000000000000000 CR3: 0000000002209000 CR4: 00000000000006f0
[ 4.346031] Call Trace:
[ 4.346031] ? set_debug_rodata+0x17/0x17
[ 4.346031] ? set_debug_rodata+0x17/0x17
[ 4.346031] proto_register+0xb0/0x21b
[ 4.346031] sctp_init+0x36c/0x47e
[ 4.346031] ? dccp_v6_init+0x84/0x84
[ 4.346031] do_one_initcall+0x90/0x13c
[ 4.346031] ? set_debug_rodata+0x17/0x17
[ 4.346031] kernel_init_freeable+0x19d/0x220
[ 4.346031] ? rest_init+0xda/0xda
[ 4.346031] kernel_init+0xe/0xfa
[ 4.346031] ret_from_fork+0x2a/0x40
[ 4.346031] Code: 93 00 48 f7 c3 ff 92 40 fb 0f 85 bd 00 00 00 4d 85 ed 75 07 4d 85 ff 74 02 0f 0b 4d 39 ec 72 0b 4c 89 e0 4c 29 e8 49 39 c7 76 02 <0f> 0b 81 e3 00 6d af 04 4d 85 ed 74 1f 48 8b 7d d0 be c0 00 40
[ 4.346031] RIP: kmem_cache_create_usercopy+0x6e/0x17b RSP: ffffc900000d3e00
[ 4.445843] random: init_oops_id+0x26/0x37 get_random_bytes called with crng_init=0
[ 4.448791] ---[ end trace e9a94a0de6296fe2 ]---
To reproduce:
git clone https://github.com/01org/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
Kernel Test Robot
2 years, 9 months