Extracting prog: 3m9.408742376s
Minimizing prog: 4m13.898617133s
Simplifying prog options: 2m50.109412672s
Extracting C: 26.985758849s
Simplifying C: 0s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)

program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 1m40s
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)

program crashed: INFO: trying to register non-static key in __vb2_queue_cancel
single: successfully extracted reproducer
found reproducer with 1 syscalls
minimizing guilty program
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, 0x0, 0x0)

program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB], 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program did not crash
simplifying guilty program options
testing program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)

program crashed: INFO: trying to register non-static key in __vb2_queue_cancel
extracting C reproducer
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program did not crash
testing program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)

program crashed: INFO: trying to register non-static key in __vb2_queue_cancel
extracting C reproducer
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program did not crash
testing program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)

program crashed: INFO: trying to register non-static key in __vb2_queue_cancel
validation run: crashed=true
testing program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)

program crashed: INFO: trying to register non-static key in __vb2_queue_cancel
validation run: crashed=true
testing program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000d00)=ANY=[@ANYBLOB="120100021982302013042360e5ec0102030109021b0001000060020904840001ee48b100090582"], 0x0)

program crashed: INFO: trying to register non-static key in __vb2_queue_cancel
validation run: crashed=true
reproducing took 12m34.504670821s
repro crashed as (corrupted=false):
em28xx 5-1:0.132: No AC97 audio processor
usb 5-1: Decoder not found
em28xx 5-1:0.132: failed to create media graph
em28xx 5-1:0.132: V4L2 device video103 deregistered
INFO: trying to register non-static key.
The code is fine but needs lockdep annotation, or maybe
you didn't initialize this object before use?
turning off the locking correctness validator.
CPU: 3 UID: 0 PID: 50 Comm: kworker/3:1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: events request_module_async
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 assign_lock_key kernel/locking/lockdep.c:1000 [inline]
 register_lock_class+0x79b/0x7b0 kernel/locking/lockdep.c:1315
 __lock_acquire+0x3e7/0x1ec0 kernel/locking/lockdep.c:5128
 lock_acquire kernel/locking/lockdep.c:5886 [inline]
 lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5843
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:155 [inline]
 _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:181
 __wake_up_common_lock kernel/sched/wait.c:125 [inline]
 __wake_up+0x1c/0x60 kernel/sched/wait.c:147
 __vb2_queue_cancel+0x348/0xe90 drivers/media/common/videobuf2/videobuf2-core.c:2244
 vb2_core_queue_release+0x27/0x190 drivers/media/common/videobuf2/videobuf2-core.c:2677
 vb2_queue_release drivers/media/common/videobuf2/videobuf2-v4l2.c:943 [inline]
 vb2_video_unregister_device drivers/media/common/videobuf2/videobuf2-v4l2.c:1279 [inline]
 vb2_video_unregister_device+0x152/0x2e0 drivers/media/common/videobuf2/videobuf2-v4l2.c:1254
 em28xx_v4l2_init.cold+0xe1a/0x3a18 drivers/media/usb/em28xx/em28xx-video.c:3097
 em28xx_init_extension+0x13a/0x200 drivers/media/usb/em28xx/em28xx-core.c:1248
 request_module_async+0x1e/0x30 drivers/media/usb/em28xx/em28xx-cards.c:3685
 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3387
 process_scheduled_works kernel/workqueue.c:3470 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3551
 kthread+0x373/0x450 kernel/kthread.c:436
 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 3 UID: 0 PID: 50 Comm: kworker/3:1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: events request_module_async
RIP: 0010:__wake_up_common+0x9b/0x1f0 kernel/sched/wait.c:105
Code: 02 00 0f 85 5b 01 00 00 48 8b 5b 40 48 8d 43 e8 4c 39 fb 0f 84 b3 00 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 d9 48 c1 e9 03 <80> 3c 11 00 0f 85 18 01 00 00 48 bd 00 00 00 00 00 fc ff df 4c 8b
RSP: 0018:ffffc9000071f9a0 EFLAGS: 00010046
RAX: ffffffffffffffe8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff888025f31790
RBP: ffff888025f31790 R08: 0000000000000000 R09: fffff520000e3f2b
R10: 0000000000000003 R11: 00000000000075eb R12: 0000000000000003
R13: 0000000000000000 R14: 0000000000000000 R15: ffff888025f317d0
FS:  0000000000000000(0000) GS:ffff888096c84000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563add28c3b8 CR3: 0000000025592000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __wake_up_common_lock kernel/sched/wait.c:126 [inline]
 __wake_up+0x31/0x60 kernel/sched/wait.c:147
 __vb2_queue_cancel+0x348/0xe90 drivers/media/common/videobuf2/videobuf2-core.c:2244
 vb2_core_queue_release+0x27/0x190 drivers/media/common/videobuf2/videobuf2-core.c:2677
 vb2_queue_release drivers/media/common/videobuf2/videobuf2-v4l2.c:943 [inline]
 vb2_video_unregister_device drivers/media/common/videobuf2/videobuf2-v4l2.c:1279 [inline]
 vb2_video_unregister_device+0x152/0x2e0 drivers/media/common/videobuf2/videobuf2-v4l2.c:1254
 em28xx_v4l2_init.cold+0xe1a/0x3a18 drivers/media/usb/em28xx/em28xx-video.c:3097
 em28xx_init_extension+0x13a/0x200 drivers/media/usb/em28xx/em28xx-core.c:1248
 request_module_async+0x1e/0x30 drivers/media/usb/em28xx/em28xx-cards.c:3685
 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3387
 process_scheduled_works kernel/workqueue.c:3470 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3551
 kthread+0x373/0x450 kernel/kthread.c:436
 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__wake_up_common+0x9b/0x1f0 kernel/sched/wait.c:105
Code: 02 00 0f 85 5b 01 00 00 48 8b 5b 40 48 8d 43 e8 4c 39 fb 0f 84 b3 00 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 d9 48 c1 e9 03 <80> 3c 11 00 0f 85 18 01 00 00 48 bd 00 00 00 00 00 fc ff df 4c 8b
RSP: 0018:ffffc9000071f9a0 EFLAGS: 00010046
RAX: ffffffffffffffe8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff888025f31790
RBP: ffff888025f31790 R08: 0000000000000000 R09: fffff520000e3f2b
R10: 0000000000000003 R11: 00000000000075eb R12: 0000000000000003
R13: 0000000000000000 R14: 0000000000000000 R15: ffff888025f317d0
FS:  0000000000000000(0000) GS:ffff888096c84000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563add28c3b8 CR3: 0000000025592000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess):
   0:	02 00                	add    (%rax),%al
   2:	0f 85 5b 01 00 00    	jne    0x163
   8:	48 8b 5b 40          	mov    0x40(%rbx),%rbx
   c:	48 8d 43 e8          	lea    -0x18(%rbx),%rax
  10:	4c 39 fb             	cmp    %r15,%rbx
  13:	0f 84 b3 00 00 00    	je     0xcc
  19:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
  20:	fc ff df
  23:	48 89 d9             	mov    %rbx,%rcx
  26:	48 c1 e9 03          	shr    $0x3,%rcx
* 2a:	80 3c 11 00          	cmpb   $0x0,(%rcx,%rdx,1) <-- trapping instruction
  2e:	0f 85 18 01 00 00    	jne    0x14c
  34:	48 bd 00 00 00 00 00 	movabs $0xdffffc0000000000,%rbp
  3b:	fc ff df
  3e:	4c                   	rex.WR
  3f:	8b                   	.byte 0x8b

final repro crashed as (corrupted=false):
em28xx 5-1:0.132: No AC97 audio processor
usb 5-1: Decoder not found
em28xx 5-1:0.132: failed to create media graph
em28xx 5-1:0.132: V4L2 device video103 deregistered
INFO: trying to register non-static key.
The code is fine but needs lockdep annotation, or maybe
you didn't initialize this object before use?
turning off the locking correctness validator.
CPU: 3 UID: 0 PID: 50 Comm: kworker/3:1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: events request_module_async
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 assign_lock_key kernel/locking/lockdep.c:1000 [inline]
 register_lock_class+0x79b/0x7b0 kernel/locking/lockdep.c:1315
 __lock_acquire+0x3e7/0x1ec0 kernel/locking/lockdep.c:5128
 lock_acquire kernel/locking/lockdep.c:5886 [inline]
 lock_acquire+0x1b9/0x370 kernel/locking/lockdep.c:5843
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:155 [inline]
 _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:181
 __wake_up_common_lock kernel/sched/wait.c:125 [inline]
 __wake_up+0x1c/0x60 kernel/sched/wait.c:147
 __vb2_queue_cancel+0x348/0xe90 drivers/media/common/videobuf2/videobuf2-core.c:2244
 vb2_core_queue_release+0x27/0x190 drivers/media/common/videobuf2/videobuf2-core.c:2677
 vb2_queue_release drivers/media/common/videobuf2/videobuf2-v4l2.c:943 [inline]
 vb2_video_unregister_device drivers/media/common/videobuf2/videobuf2-v4l2.c:1279 [inline]
 vb2_video_unregister_device+0x152/0x2e0 drivers/media/common/videobuf2/videobuf2-v4l2.c:1254
 em28xx_v4l2_init.cold+0xe1a/0x3a18 drivers/media/usb/em28xx/em28xx-video.c:3097
 em28xx_init_extension+0x13a/0x200 drivers/media/usb/em28xx/em28xx-core.c:1248
 request_module_async+0x1e/0x30 drivers/media/usb/em28xx/em28xx-cards.c:3685
 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3387
 process_scheduled_works kernel/workqueue.c:3470 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3551
 kthread+0x373/0x450 kernel/kthread.c:436
 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 3 UID: 0 PID: 50 Comm: kworker/3:1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: events request_module_async
RIP: 0010:__wake_up_common+0x9b/0x1f0 kernel/sched/wait.c:105
Code: 02 00 0f 85 5b 01 00 00 48 8b 5b 40 48 8d 43 e8 4c 39 fb 0f 84 b3 00 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 d9 48 c1 e9 03 <80> 3c 11 00 0f 85 18 01 00 00 48 bd 00 00 00 00 00 fc ff df 4c 8b
RSP: 0018:ffffc9000071f9a0 EFLAGS: 00010046
RAX: ffffffffffffffe8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff888025f31790
RBP: ffff888025f31790 R08: 0000000000000000 R09: fffff520000e3f2b
R10: 0000000000000003 R11: 00000000000075eb R12: 0000000000000003
R13: 0000000000000000 R14: 0000000000000000 R15: ffff888025f317d0
FS:  0000000000000000(0000) GS:ffff888096c84000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563add28c3b8 CR3: 0000000025592000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __wake_up_common_lock kernel/sched/wait.c:126 [inline]
 __wake_up+0x31/0x60 kernel/sched/wait.c:147
 __vb2_queue_cancel+0x348/0xe90 drivers/media/common/videobuf2/videobuf2-core.c:2244
 vb2_core_queue_release+0x27/0x190 drivers/media/common/videobuf2/videobuf2-core.c:2677
 vb2_queue_release drivers/media/common/videobuf2/videobuf2-v4l2.c:943 [inline]
 vb2_video_unregister_device drivers/media/common/videobuf2/videobuf2-v4l2.c:1279 [inline]
 vb2_video_unregister_device+0x152/0x2e0 drivers/media/common/videobuf2/videobuf2-v4l2.c:1254
 em28xx_v4l2_init.cold+0xe1a/0x3a18 drivers/media/usb/em28xx/em28xx-video.c:3097
 em28xx_init_extension+0x13a/0x200 drivers/media/usb/em28xx/em28xx-core.c:1248
 request_module_async+0x1e/0x30 drivers/media/usb/em28xx/em28xx-cards.c:3685
 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3387
 process_scheduled_works kernel/workqueue.c:3470 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3551
 kthread+0x373/0x450 kernel/kthread.c:436
 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__wake_up_common+0x9b/0x1f0 kernel/sched/wait.c:105
Code: 02 00 0f 85 5b 01 00 00 48 8b 5b 40 48 8d 43 e8 4c 39 fb 0f 84 b3 00 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 d9 48 c1 e9 03 <80> 3c 11 00 0f 85 18 01 00 00 48 bd 00 00 00 00 00 fc ff df 4c 8b
RSP: 0018:ffffc9000071f9a0 EFLAGS: 00010046
RAX: ffffffffffffffe8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff888025f31790
RBP: ffff888025f31790 R08: 0000000000000000 R09: fffff520000e3f2b
R10: 0000000000000003 R11: 00000000000075eb R12: 0000000000000003
R13: 0000000000000000 R14: 0000000000000000 R15: ffff888025f317d0
FS:  0000000000000000(0000) GS:ffff888096c84000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563add28c3b8 CR3: 0000000025592000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess):
   0:	02 00                	add    (%rax),%al
   2:	0f 85 5b 01 00 00    	jne    0x163
   8:	48 8b 5b 40          	mov    0x40(%rbx),%rbx
   c:	48 8d 43 e8          	lea    -0x18(%rbx),%rax
  10:	4c 39 fb             	cmp    %r15,%rbx
  13:	0f 84 b3 00 00 00    	je     0xcc
  19:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
  20:	fc ff df
  23:	48 89 d9             	mov    %rbx,%rcx
  26:	48 c1 e9 03          	shr    $0x3,%rcx
* 2a:	80 3c 11 00          	cmpb   $0x0,(%rcx,%rdx,1) <-- trapping instruction
  2e:	0f 85 18 01 00 00    	jne    0x14c
  34:	48 bd 00 00 00 00 00 	movabs $0xdffffc0000000000,%rbp
  3b:	fc ff df
  3e:	4c                   	rex.WR
  3f:	8b                   	.byte 0x8b