[lkp-developer] [sched] 8ae3e4082d: BUG:unable_to_handle_kernel
by kernel test robot
FYI, we noticed the following commit:
commit: 8ae3e4082d915e7191e06fff38258f5a8bde981e ("sched: force update of blocked load of idle cpus")
git://internal_merge_and_test_tree devel-catchup-201612221833
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 320M
caused below changes:
+--------------------------------------------------------------------------+------------+------------+
| | 6b94780e45 | 8ae3e4082d |
+--------------------------------------------------------------------------+------------+------------+
| boot_successes | 51 | 0 |
| boot_failures | 12 | 19 |
| BUG:sleeping_function_called_from_invalid_context_at_kernel/irq/manage.c | 2 | |
| calltrace:SyS_write | 2 | |
| calltrace:init_netconsole | 1 | |
| WARNING:at_fs/sysfs/dir.c:#sysfs_warn_dup | 4 | |
| calltrace:parport_pc_init | 4 | |
| calltrace:SyS_finit_module | 4 | |
| WARNING:at_lib/kobject.c:#kobject_add_internal | 4 | |
| BUG:kernel_hang_in_test_stage | 4 | |
| invoked_oom-killer:gfp_mask=0x | 6 | 2 |
| Mem-Info | 6 | 2 |
| Kernel_panic-not_syncing:Out_of_memory_and_no_killable_processes | 6 | 2 |
| BUG:unable_to_handle_kernel | 0 | 17 |
| Oops | 0 | 17 |
| RIP:run_rebalance_domains | 0 | 16 |
| Kernel_panic-not_syncing:Fatal_exception_in_interrupt | 0 | 17 |
+--------------------------------------------------------------------------+------------+------------+
[ 1.562336] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0
[ 1.567545] hpet0: 3 comparators, 64-bit 100.000000 MHz counter
[ 1.582264] clocksource: Switched to clocksource kvm-clock
[ 1.584127] BUG: unable to handle kernel NULL pointer dereference at 0000000000000060
[ 1.587547] IP: [<ffffffff810c139e>] run_rebalance_domains+0x8e/0x290
[ 1.589916] PGD 0
[ 1.590412]
[ 1.591738] Oops: 0000 [#1] SMP
[ 1.593332] Modules linked in:
[ 1.594986] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.9.0-rc8-00180-g8ae3e40 #1
[ 1.600327] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[ 1.608723] task: ffffffff81e0e4c0 task.stack: ffffffff81e00000
[ 1.612811] RIP: 0010:[<ffffffff810c139e>] [<ffffffff810c139e>] run_rebalance_domains+0x8e/0x290
[ 1.619388] RSP: 0000:ffff880005a03ef8 EFLAGS: 00010286
[ 1.623400] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 1.628954] RDX: 0000000000000002 RSI: ffffffff81e05100 RDI: ffffffff81e05138
[ 1.630114] VFS: Disk quotas dquot_6.6.0
[ 1.630140] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[ 1.641516] RBP: ffff880005a03f50 R08: 00000000fd1eae01 R09: 0000000000000000
[ 1.641517] R10: 00000000000003c4 R11: 0000000000000373 R12: 0000000000000000
[ 1.641518] R13: ffff880005a19340 R14: 00000000fffb6d9c R15: 0000000000019340
[ 1.641520] FS: 0000000000000000(0000) GS:ffff880005a00000(0000) knlGS:0000000000000000
[ 1.641521] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1.641521] CR2: 0000000000000060 CR3: 0000000001e07000 CR4: 00000000000006f0
[ 1.641524] Stack:
[ 1.641527] 0000000000000000 ffff880005a0d5c0 0000000016a0aae7 0000000005a03f60
[ 1.641529] ffffffff81102da8 0000004d63de6100 0000000000000007 0000000000000007
[ 1.641531] 0000000000000008 ffffffff81e05138 0000000000000007 ffff880005a03fc0
[ 1.641531] Call Trace:
[ 1.641540] <IRQ>
[ 1.641540] [<ffffffff81102da8>] ? tick_nohz_stop_sched_tick+0x298/0x2c0
[ 1.641544] [<ffffffff8195ebb4>] __do_softirq+0x104/0x2cb
[ 1.641548] [<ffffffff81087dd1>] irq_exit+0xf1/0x100
[ 1.641551] [<ffffffff81051833>] smp_reschedule_interrupt+0x33/0x40
[ 1.641552] [<ffffffff8195e42c>] reschedule_interrupt+0x8c/0xa0
[ 1.641556] <EOI>
[ 1.641557] [<ffffffff8195b596>] ? native_safe_halt+0x6/0x10
[ 1.641559] [<ffffffff8195b290>] default_idle+0x20/0xf0
[ 1.641562] [<ffffffff81038daf>] arch_cpu_idle+0xf/0x20
[ 1.641564] [<ffffffff8195b703>] default_idle_call+0x23/0x30
[ 1.641566] [<ffffffff810c7f29>] cpu_startup_entry+0x189/0x200
[ 1.641568] [<ffffffff8194e245>] rest_init+0x85/0x90
[ 1.641570] [<ffffffff81ffcf5c>] start_kernel+0x407/0x414
[ 1.641573] [<ffffffff81ffc120>] ? early_idt_handler_array+0x120/0x120
[ 1.641575] [<ffffffff81ffc2d6>] x86_64_start_reservations+0x2a/0x2c
[ 1.641577] [<ffffffff81ffc415>] x86_64_start_kernel+0x13d/0x14c
[ 1.642641] Code: 81 49 8d 14 07 48 8b 52 40 83 e2 02 0f 84 07 01 00 00 65 ff 05 04 bf f4 7e 48 c7 c0 a0 de 00 00 65 48 03 05 95 8d f4 7e 48 8b 00 <8b> 50 60 8b 78 28 48 0f af fa e8 03 df 02 00 ba 01 00 00 00 48
[ 1.642646] RIP [<ffffffff810c139e>] run_rebalance_domains+0x8e/0x290
[ 1.642646] RSP <ffff880005a03ef8>
[ 1.642647] CR2: 0000000000000060
[ 1.642652] ---[ end trace 823df8bdff27bcd4 ]---
[ 1.642653] Kernel panic - not syncing: Fatal exception in interrupt
Elapsed time: 10
To reproduce:
git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
Xiaolong
3 years, 9 months
[lkp-developer] [drm] 75f6dfe3e6: BUG:unable_to_handle_kernel
by kernel test robot
FYI, we noticed the following commit:
commit: 75f6dfe3e652e1adef8cc1b073c89f3e22103a8f ("drm: Deduplicate driver initialization message")
git://anongit.freedesktop.org/drm-intel drm-intel-nightly
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 -m 320M
caused below changes:
+------------------------------------------+------------+------------+
| | e82dfa00da | 75f6dfe3e6 |
+------------------------------------------+------------+------------+
| boot_successes | 8 | 0 |
| boot_failures | 0 | 8 |
| BUG:unable_to_handle_kernel | 0 | 8 |
| Oops:#[##] | 0 | 8 |
| EIP_is_at_drm_dev_register | 0 | 8 |
| calltrace:vgem_init | 0 | 8 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 8 |
+------------------------------------------+------------+------------+
[ 1.608985] mwave: mwavedd::mwave_init: Error: Failed to initialize
[ 1.609295] Hangcheck: starting hangcheck timer 0.9.1 (tick is 180 seconds, margin is 60 seconds).
[ 1.609913] [drm] radeon kernel modesetting enabled.
[ 1.610407] BUG: unable to handle kernel NULL pointer dereference at 0000002c
[ 1.610833] IP: [<8143c0ba>] drm_dev_register+0xe9/0x173
[ 1.611131] *pdpt = 0000000000000000 *pde = f000ff53f000ff53
[ 1.611427]
[ 1.611513] Oops: 0000 [#1]
[ 1.611656] CPU: 0 PID: 1 Comm: swapper Not tainted 4.9.0-rc8-01743-g75f6dfe #354
[ 1.612026] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[ 1.612523] task: 9342d000 task.stack: 9343e000
[ 1.612749] EIP: 0060:[<8143c0ba>] EFLAGS: 00210246 CPU: 0
[ 1.613023] EIP is at drm_dev_register+0xe9/0x173
[ 1.613257] EAX: 900a3400 EBX: 900a5000 ECX: 00000000 EDX: 00000000
[ 1.613617] ESI: 820233c0 EDI: 00000000 EBP: 9343ff10 ESP: 9343fef8
[ 1.613989] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
[ 1.614278] CR0: 80050033 CR2: 0000002c CR3: 0217e000 CR4: 000006b0
[ 1.614621] Stack:
[ 1.614725] 00000000 00000000 8143c57d dd700876 82100b64 000003a3 9343ff20 82100ba4
[ 1.615162] 34c27b4d 82100b64 9343ff80 820b7212 939b87ac 81e79ff0 00000000 9343ff00
[ 1.615595] 81049d1c 00000000 81e79ff0 00060006 81e75748 000003a3 939b87ad 00000200
[ 1.616052] Call Trace:
[ 1.616190] [<8143c57d>] ? drm_dev_alloc+0x28/0x43
[ 1.616435] [<82100b64>] ? vmwgfx_init+0x65/0x65
[ 1.616669] [<82100ba4>] vgem_init+0x40/0x74
[ 1.616905] [<82100b64>] ? vmwgfx_init+0x65/0x65
[ 1.617148] [<820b7212>] do_one_initcall+0x9e/0x17a
[ 1.617411] [<81049d1c>] ? parse_args+0x1bb/0x27e
[ 1.617682] [<820b7452>] ? kernel_init_freeable+0x164/0x266
[ 1.617997] [<820b7481>] kernel_init_freeable+0x193/0x266
[ 1.618287] [<8198706a>] ? rest_init+0xa2/0xa2
[ 1.618521] [<81987072>] kernel_init+0x8/0xcb
[ 1.618758] [<8198bc77>] ret_from_fork+0x1b/0x28
[ 1.618994] Code: 68 eb aa 8b 55 e8 89 d8 ff d1 85 c0 89 c7 75 59 8b 43 14 f6 80 dd 00 00 00 20 74 07 89 d8 e8 b1 10 01 00 8b 43 20 8b 53 10 8b 08 <8b> 42 2c 85 c0 75 03 8b 42 08 51 50 ff b6 d8 00 00 00 ff b6 cc
[ 1.620399] EIP: [<8143c0ba>]
[ 1.620566] drm_dev_register+0xe9/0x173
[ 1.620781] SS:ESP 0068:9343fef8
[ 1.620975] CR2: 000000000000002c
[ 1.621149] ---[ end trace 9d22d41231e36593 ]---
[ 1.621389] Kernel panic - not syncing: Fatal exception
[ 1.621680] Kernel Offset: disabled
Elapsed time: 10
To reproduce:
git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
Xiaolong
3 years, 9 months
[lkp-developer] c55a9697e1: BUG:KASAN:null-ptr-deref_on_address(null)
by kernel test robot
FYI, we noticed the following commit:
commit: c55a9697e10aba9946692c56e9236993c1da023a ("Reimplement IDR and IDA using the radix tree")
git://git.infradead.org/users/willy/linux-dax.git idr-2016-12-26
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 -m 320M
caused below changes:
+-------------------------------------------+------------+------------+
| | ef9e389452 | c55a9697e1 |
+-------------------------------------------+------------+------------+
| boot_successes | 0 | 0 |
| boot_failures | 22 | 20 |
| BUG:KASAN:use-after-free_in | 22 | |
| calltrace:init | 20 | |
| BUG:KASAN:null-ptr-deref_on_address(null) | 0 | 20 |
| BUG:unable_to_handle_kernel | 0 | 20 |
| Oops | 0 | 20 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 20 |
+-------------------------------------------+------------+------------+
[ 16.646161] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input1
[ 16.654910] ACPI: Power Button [PWRF]
[ 16.669533] ==================================================================
[ 16.676428] BUG: KASAN: null-ptr-deref on address (null)
[ 16.677900] Read of size 1 by task swapper/1
[ 16.679005] CPU: 0 PID: 1 Comm: swapper Not tainted 4.10.0-rc1-00012-gc55a969 #1
[ 16.680861] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[ 16.693066] Call Trace:
[ 16.695546] show_stack+0x6b/0x6e
[ 16.696466] dump_stack+0x19/0x1b
[ 16.697400] kasan_report+0x171/0x559
To reproduce:
git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
Xiaolong
3 years, 9 months
[lkp-developer] [sched/core] 6b94780e45: unixbench.score -4.5% regression
by kernel test robot
Greeting,
FYI, we noticed a -4.5% regression of unixbench.score due to commit:
commit: 6b94780e45c17b83e3e75f8aaca5a328db583c74 ("sched/core: Use load_avg for selecting idlest group")
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
in testcase: unixbench
on test machine: 24 threads Nehalem-EP with 24G memory
with following parameters:
runtime: 300s
nr_task: 100%
test: shell1
cpufreq_governor: performance
test-description: UnixBench is the original BYTE UNIX benchmark suite aims to test performance of Unix-like system.
test-url: https://github.com/kdlucas/byte-unixbench
In addition to that, the commit also has significant impact on the following tests:
+------------------+-----------------------------------------------------------------------+
| testcase: change | unixbench: unixbench.score -2.9% regression |
| test machine | 8 threads Intel(R) Core(TM) i7 CPU 870 @ 2.93GHz with 6G memory |
| test parameters | nr_task=1 |
| | runtime=300s |
| | test=shell8 |
+------------------+-----------------------------------------------------------------------+
Details are as below:
-------------------------------------------------------------------------------------------------->
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
testcase/path_params/tbox_group/run: unixbench/300s-100%-shell1-performance/lkp-wsm-ep1
f519a3f1c6b7a990 6b94780e45c17b83e3e75f8aac
---------------- --------------------------
25565 -5% 24414 unixbench.score
29557557 28781098 unixbench.time.voluntary_context_switches
5743 -4% 5514 unixbench.time.user_time
9.232e+08 -4% 8.831e+08 unixbench.time.minor_page_faults
1807 -5% 1709 unixbench.time.percent_of_cpu_this_job_got
5656 -7% 5271 unixbench.time.system_time
13223805 -20% 10628072 unixbench.time.involuntary_context_switches
741766 -62% 279054 interrupts.CAL:Function_call_interrupts
31060 -9% 28214 vmstat.system.in
126250 -12% 110890 vmstat.system.cs
78.58 -6% 74.20 turbostat.%Busy
2507 -6% 2366 turbostat.Avg_MHz
9134 ± 47% -6e+03 2973 ± 36% latency_stats.max.pipe_read.__vfs_read.vfs_read.SyS_read.entry_SYSCALL_64_fastpath
380879 ± 10% 5e+05 887692 ± 49% latency_stats.sum.wait_on_page_bit_killable.__lock_page_or_retry.filemap_fault.__do_fault.handle_mm_fault.__do_page_fault.do_page_fault.page_fault
31710 ± 15% -2e+04 10583 ± 14% latency_stats.sum.call_rwsem_down_write_failed.__vma_adjust.__split_vma.do_munmap.vm_munmap.elf_map.load_elf_binary.search_binary_handler.do_execveat_common.SyS_execve.do_syscall_64.return_from_SYSCALL_64
51796 ± 4% -4e+04 15457 ± 10% latency_stats.sum.call_rwsem_down_write_failed.unlink_file_vma.free_pgtables.unmap_region.do_munmap.vm_munmap.elf_map.load_elf_binary.search_binary_handler.do_execveat_common.SyS_execve.do_syscall_64
111998 ± 18% -7e+04 37074 ± 14% latency_stats.sum.call_rwsem_down_write_failed.__vma_adjust.__split_vma.do_munmap.mmap_region.do_mmap.vm_mmap_pgoff.SyS_mmap_pgoff.SyS_mmap.entry_SYSCALL_64_fastpath
275087 ± 15% -2e+05 81973 ± 3% latency_stats.sum.call_rwsem_down_write_failed.unlink_file_vma.free_pgtables.unmap_region.do_munmap.mmap_region.do_mmap.vm_mmap_pgoff.SyS_mmap_pgoff.SyS_mmap.entry_SYSCALL_64_fastpath
930993 ± 12% -6e+05 320520 ± 4% latency_stats.sum.call_rwsem_down_write_failed.vma_link.mmap_region.do_mmap.vm_mmap_pgoff.vm_mmap.elf_map.load_elf_binary.search_binary_handler.do_execveat_common.SyS_execve.do_syscall_64
4755783 ± 9% -3e+06 1619348 ± 4% latency_stats.sum.call_rwsem_down_write_failed.__vma_adjust.__split_vma.split_vma.mprotect_fixup.do_mprotect_pkey.SyS_mprotect.entry_SYSCALL_64_fastpath
5536067 ± 10% -4e+06 1929338 ± 3% latency_stats.sum.call_rwsem_down_write_failed.copy_process._do_fork.SyS_clone.do_syscall_64.return_from_SYSCALL_64
9.032e+08 -4% 8.64e+08 perf-stat.page-faults
9.032e+08 -4% 8.64e+08 perf-stat.minor-faults
2.329e+09 2.269e+09 perf-stat.node-load-misses
2.2e+09 -9% 2.011e+09 ± 5% perf-stat.dTLB-store-misses
3.278e+10 -9% 2.987e+10 ± 6% perf-stat.dTLB-load-misses
19484819 13% 21974129 perf-stat.cpu-migrations
3.755e+13 -6% 3.54e+13 perf-stat.cpu-cycles
3244 4% 3379 perf-stat.instructions-per-iTLB-miss
4.536e+12 -4% 4.332e+12 perf-stat.branch-instructions
2.303e+13 -4% 2.208e+13 perf-stat.instructions
5.768e+12 -4% 5.517e+12 perf-stat.dTLB-loads
3.567e+11 -4% 3.414e+11 perf-stat.cache-references
2.97 2.93 perf-stat.branch-miss-rate%
2.768e+10 2.699e+10 perf-stat.node-stores
5.446e+10 -3% 5.275e+10 perf-stat.cache-misses
0.03 -4% 0.03 perf-stat.iTLB-load-miss-rate%
9.673e+09 -4% 9.294e+09 perf-stat.node-loads
3.596e+12 -4% 3.442e+12 perf-stat.dTLB-stores
0.61 0.62 perf-stat.ipc
1.347e+11 -6% 1.27e+11 perf-stat.branch-misses
7.098e+09 -8% 6.533e+09 perf-stat.iTLB-load-misses
2.309e+13 -4% 2.206e+13 perf-stat.iTLB-loads
79911173 -12% 70187035 perf-stat.context-switches
turbostat._Busy
90 ++-------------------------------------*---*---------------------------+
| .. *...*.. |
80 *+..*..*...*..*...*..*...*..*...O...* O O O O O...O..O...O O O
70 O+ O O O O O O O O |
| |
60 ++ |
50 ++ |
| |
40 ++ |
30 ++ |
| |
20 ++ |
10 ++ |
| |
0 ++----------------------------------O----------------------------------+
unixbench.time.percent_of_cpu_this_job_got
2500 ++-------------------------------------------------------------------+
| |
| .*... |
2000 ++ .*. *..*... |
*..*...*..*...*..*...*..*...*..O...*. O O O O O..O...O..O O O
O O O O O O O O O |
1500 ++ |
| |
1000 ++ |
| |
| |
500 ++ |
| |
| |
0 ++---------------------------------O---------------------------------+
vmstat.system.in
40000 ++------------------------------------------------------------------+
| .*...*.. |
35000 ++ .*...*. |
30000 *+.*...*..*...*..*..*...*..*...*..*. *..*...*..* |
O O O O O O O O O O O O O O O O O O O O
25000 ++ |
| |
20000 ++ |
| |
15000 ++ |
10000 ++ |
| |
5000 ++ |
| |
0 ++--------------------------------O---------------------------------+
[*] 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
3 years, 10 months
[lkp-developer] [drm] 2ab8c5f8c0: WARNING:at_drivers/gpu/drm/drm_mode_config.c:#drm_mode_config_cleanup[drm]
by kernel test robot
FYI, we noticed the following commit:
commit: 2ab8c5f8c0358010a19e82656fa4826a6a51d1e0 ("drm: Clean up connectors by unreferencing them")
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
in testcase: boot
on test machine: qemu-system-x86_64 -enable-kvm -cpu IvyBridge -smp 2 -m 1G
caused below changes:
+----------------------------------------------------------------------------+------------+------------+
| | c36a3254f7 | 2ab8c5f8c0 |
+----------------------------------------------------------------------------+------------+------------+
| boot_successes | 0 | 0 |
| boot_failures | 12 | 12 |
| WARNING:at_arch/x86/mm/dump_pagetables.c:#note_page | 12 | 12 |
| calltrace:mark_rodata_ro | 12 | 12 |
| WARNING:at_fs/sysfs/dir.c:#sysfs_warn_dup | 10 | 7 |
| calltrace:parport_pc_init | 9 | 7 |
| calltrace:SyS_finit_module | 10 | 8 |
| WARNING:at_lib/kobject.c:#kobject_add_internal | 10 | 7 |
| calltrace:ppdev_init | 1 | |
| WARNING:at_drivers/gpu/drm/drm_mode_config.c:#drm_mode_config_cleanup[drm] | 0 | 8 |
| calltrace:bochs_init | 0 | 8 |
+----------------------------------------------------------------------------+------------+------------+
[ 7.358425] [drm] Initialized bochs-drm 1.0.0 20130925 for 0000:00:02.0 on minor 0
[ 7.363088] Console: switching to colour VGA+ 80x25
[ 7.383045] ------------[ cut here ]------------
[ 7.383866] WARNING: CPU: 0 PID: 187 at drivers/gpu/drm/drm_mode_config.c:424 drm_mode_config_cleanup+0x99/0x20c [drm]
[ 7.385844] Modules linked in: ppdev(+) intel_rapl(-) crct10dif_pclmul crc32c_intel bochs_drm(+) ttm fbcon bitblit fbcon_rotate fbcon_ccw fbcon_ud fbcon_cw softcursor tileblit evbug drm_kms_helper serio_raw virtio_pci drm cfbfillrect cfbimgblt cfbcopyarea fb_sys_fops syscopyarea sysfillrect sysimgblt fb fbdev parport_pc(+) acpi_cpufreq processor button
[ 7.392955] CPU: 0 PID: 187 Comm: systemd-udevd Tainted: G W 4.9.0-rc8-01683-g2ab8c5f #1
[ 7.394825] parport_pc 00:04: reported by Plug and Play ACPI
[ 7.394980] parport0: PC-style at 0x378, irq 7 [PCSPP,TRISTATE,EPP]
[ 7.396233] ppdev: user-space parallel port driver
[ 7.399863] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[ 7.401462] ffffc90000acfa60 ffffffff812c2c74 ffffc90000acfaa0 ffffffff8106ffd7
[ 7.403032] 000001a800acf9f8 ffff88003e47e000 ffff88003e47e850 ffff88003e47e858
[ 7.404576] 000000000000000a 0000000000000001 ffffc90000acfab0 ffffffff8107009f
[ 7.406142] Call Trace:
[ 7.407452] [<ffffffff812c2c74>] dump_stack+0x19/0x1b
[ 7.408320] [<ffffffff8106ffd7>] __warn+0xc3/0xde
[ 7.409126] [<ffffffff8107009f>] warn_slowpath_null+0x18/0x1a
[ 7.410159] [<ffffffffa008a3ad>] drm_mode_config_cleanup+0x99/0x20c [drm]
[ 7.411236] [<ffffffffa0157f94>] bochs_kms_fini+0x1a/0x24 [bochs_drm]
[ 7.412258] [<ffffffffa01570b9>] bochs_unload+0x1e/0x46 [bochs_drm]
[ 7.413261] [<ffffffffa0076104>] drm_dev_unregister+0x38/0xb0 [drm]
[ 7.414339] [<ffffffffa0076448>] drm_put_dev+0x48/0x53 [drm]
[ 7.415283] [<ffffffffa0157099>] bochs_pci_remove+0x10/0x12 [bochs_drm]
[ 7.416334] [<ffffffff8130ccc6>] pci_device_remove+0x46/0x8f
[ 7.417261] [<ffffffff813baf48>] driver_probe_device+0x1d8/0x431
[ 7.418310] [<ffffffff813bb211>] __driver_attach+0x70/0xcd
[ 7.419229] [<ffffffff813bb1a1>] ? driver_probe_device+0x431/0x431
[ 7.420223] [<ffffffff813b91ef>] bus_for_each_dev+0x6a/0x82
[ 7.421143] [<ffffffff813ba864>] driver_attach+0x19/0x1b
[ 7.422097] [<ffffffff813ba442>] bus_add_driver+0xf9/0x241
[ 7.423010] [<ffffffff813bbb27>] driver_register+0x89/0xc5
[ 7.423915] [<ffffffff8130be70>] __pci_register_driver+0x5b/0x5e
[ 7.424881] [<ffffffffa00779e2>] drm_pci_init+0x4e/0xcf [drm]
[ 7.425926] [<ffffffffa015c000>] ? 0xffffffffa015c000
[ 7.426771] [<ffffffffa015c017>] bochs_init+0x17/0x19 [bochs_drm]
[ 7.427747] [<ffffffff8100044f>] do_one_initcall+0x8c/0x118
[ 7.428669] [<ffffffff81146d79>] ? kmem_cache_alloc_trace+0xb8/0xc8
[ 7.429750] [<ffffffff81110729>] do_init_module+0x59/0x1ca
[ 7.430664] [<ffffffff810c61c7>] load_module+0x1117/0x1520
[ 7.431561] [<ffffffff81154e54>] ? kernel_read_file+0x107/0x166
[ 7.432521] [<ffffffff810c67b3>] SYSC_finit_module+0x88/0xb7
[ 7.433442] [<ffffffff810c67b3>] ? SYSC_finit_module+0x88/0xb7
To reproduce:
git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
Xiaolong
3 years, 10 months