vivid-000: kernel_thread() failed vivid-000: kernel_thread() failed vivid-000: kernel_thread() failed vivid-000: kernel_thread() failed vivid-000: kernel_thread() failed INFO: task syz-executor0:9092 blocked for more than 143 seconds. Not tainted 5.3.0-rc4+ #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D28672 9092 6191 0x00004006 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x75b/0x15a0 kernel/sched/core.c:3880 schedule+0xa8/0x270 kernel/sched/core.c:3944 schedule_timeout+0x717/0xc50 kernel/time/timer.c:1783 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common kernel/sched/completion.c:115 [inline] wait_for_completion+0x29c/0x440 kernel/sched/completion.c:136 kthread_stop+0x131/0x720 kernel/kthread.c:559 vivid_stop_generating_vid_cap+0x1ff/0x783 drivers/media/platform/vivid/vivid-kthread-cap.c:962 vid_cap_stop_streaming+0x8a/0xe0 drivers/media/platform/vivid/vivid-vid-cap.c:257 __vb2_queue_cancel+0xc6/0xab0 drivers/media/common/videobuf2/videobuf2-core.c:1874 vb2_core_streamoff+0x60/0x150 drivers/media/common/videobuf2/videobuf2-core.c:2038 __vb2_cleanup_fileio+0x78/0x170 drivers/media/common/videobuf2/videobuf2-core.c:2575 vb2_core_queue_release+0x20/0x80 drivers/media/common/videobuf2/videobuf2-core.c:2302 vb2_queue_release drivers/media/common/videobuf2/videobuf2-v4l2.c:868 [inline] _vb2_fop_release+0x1cf/0x2a0 drivers/media/common/videobuf2/videobuf2-v4l2.c:1039 vb2_fop_release+0x75/0xc0 drivers/media/common/videobuf2/videobuf2-v4l2.c:1053 vivid_fop_release+0x18e/0x450 drivers/media/platform/vivid/vivid-core.c:475 v4l2_release+0x224/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:452 __fput+0x302/0x890 fs/file_table.c:280 ____fput+0x16/0x20 fs/file_table.c:313 task_work_run+0x14a/0x1c0 kernel/task_work.c:113 get_signal+0x207c/0x2500 kernel/signal.c:2523 do_signal+0x87/0x1700 arch/x86/kernel/signal.c:815 exit_to_usermode_loop+0x251/0x2d0 arch/x86/entry/common.c:159 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x5af/0x6a0 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4576b9 Code: cc 48 8d 05 99 c2 ff ff ff e0 cc cc cc cc cc cc cc 8b 7c 24 08 b8 e7 00 00 00 0f 05 c3 cc cc cc cc 48 8b 7c 24 08 8b 74 24 10 <8b> 54 24 14 b8 02 00 00 00 0f 05 48 3d 01 f0 ff ff 76 05 b8 ff ff RSP: 002b:00007f1be3372c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000011 RAX: fffffffffffffe00 RBX: 0000000000000004 RCX: 00000000004576b9 RDX: 00000000000000d6 RSI: 0000000020000140 RDI: 0000000000000004 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1be33736d4 R13: 00000000004c3377 R14: 00000000004d4f98 R15: 00000000ffffffff INFO: task syz-executor4:9091 blocked for more than 143 seconds. Not tainted 5.3.0-rc4+ #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor4 D28160 9091 6198 0x00004004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x75b/0x15a0 kernel/sched/core.c:3880 schedule+0xa8/0x270 kernel/sched/core.c:3944 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 v4l2_release+0x1d7/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:451 __fput+0x302/0x890 fs/file_table.c:280 ____fput+0x16/0x20 fs/file_table.c:313 task_work_run+0x14a/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x280/0x2d0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x5af/0x6a0 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411021 Code: cc cc cc cc cc cc cc cc cc 64 48 8b 0c 25 f8 ff ff ff 48 3b 61 10 0f 86 b1 00 00 00 48 83 ec 30 48 89 6c 24 28 48 8d 6c 24 28 <48> 8b 44 24 38 84 00 48 8b 4c 24 40 48 2b 0d 54 09 c4 00 48 c1 e9 RSP: 002b:00007ffd67cc5620 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000411021 RDX: 0000000000000000 RSI: 0000000000730128 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffd67cc5540 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000044 R15: 0000000000000004 INFO: task syz-executor1:9099 blocked for more than 143 seconds. Not tainted 5.3.0-rc4+ #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor1 D28160 9099 6195 0x00000004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x75b/0x15a0 kernel/sched/core.c:3880 schedule+0xa8/0x270 kernel/sched/core.c:3944 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 v4l2_release+0x1d7/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:451 __fput+0x302/0x890 fs/file_table.c:280 ____fput+0x16/0x20 fs/file_table.c:313 task_work_run+0x14a/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x280/0x2d0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x5af/0x6a0 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411021 Code: cc cc cc cc cc cc cc cc cc 64 48 8b 0c 25 f8 ff ff ff 48 3b 61 10 0f 86 b1 00 00 00 48 83 ec 30 48 89 6c 24 28 48 8d 6c 24 28 <48> 8b 44 24 38 84 00 48 8b 4c 24 40 48 2b 0d 54 09 c4 00 48 c1 e9 RSP: 002b:00007fff725cf870 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411021 RDX: 0000000000000000 RSI: 0000000000730128 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007fff725cf790 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000045 R15: 0000000000000001 INFO: task syz-executor1:9105 blocked for more than 144 seconds. Not tainted 5.3.0-rc4+ #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor1 D29136 9105 6195 0x00004006 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x75b/0x15a0 kernel/sched/core.c:3880 schedule+0xa8/0x270 kernel/sched/core.c:3944 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 v4l2_release+0x1d7/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:451 __fput+0x302/0x890 fs/file_table.c:280 ____fput+0x16/0x20 fs/file_table.c:313 task_work_run+0x14a/0x1c0 kernel/task_work.c:113 get_signal+0x207c/0x2500 kernel/signal.c:2523 do_signal+0x87/0x1700 arch/x86/kernel/signal.c:815 exit_to_usermode_loop+0x251/0x2d0 arch/x86/entry/common.c:159 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x5af/0x6a0 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4576b9 Code: cc 48 8d 05 99 c2 ff ff ff e0 cc cc cc cc cc cc cc 8b 7c 24 08 b8 e7 00 00 00 0f 05 c3 cc cc cc cc 48 8b 7c 24 08 8b 74 24 10 <8b> 54 24 14 b8 02 00 00 00 0f 05 48 3d 01 f0 ff ff 76 05 b8 ff ff RSP: 002b:00007f281e103c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000011 RAX: fffffffffffffe00 RBX: 0000000000000004 RCX: 00000000004576b9 RDX: 00000000000000d6 RSI: 0000000020000140 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f281e1046d4 R13: 00000000004c3377 R14: 00000000004d4f98 R15: 00000000ffffffff INFO: task syz-executor5:9100 blocked for more than 144 seconds. Not tainted 5.3.0-rc4+ #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D28160 9100 6193 0x00000004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x75b/0x15a0 kernel/sched/core.c:3880 schedule+0xa8/0x270 kernel/sched/core.c:3944 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 v4l2_release+0x1d7/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:451 __fput+0x302/0x890 fs/file_table.c:280 ____fput+0x16/0x20 fs/file_table.c:313 task_work_run+0x14a/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x280/0x2d0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x5af/0x6a0 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411021 Code: 4c 89 f6 48 89 c7 48 89 ca 48 89 4c 24 10 4c 89 54 24 08 e8 b1 a3 ff ff 48 8b 4c 24 10 41 c6 04 0f 00 4c 8b 7c 24 28 4c 8b 54 <24> 08 45 0f b6 37 e9 db fc ff ff 0f 1f 40 00 41 80 f8 29 74 7f ba RSP: 002b:00007ffd6a7db7d0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411021 RDX: 0000000000000000 RSI: 0000000000730128 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffd6a7db6f0 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000048 R15: 0000000000000005 INFO: task syz-executor5:9101 blocked for more than 144 seconds. Not tainted 5.3.0-rc4+ #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D29136 9101 6193 0x00004006 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x75b/0x15a0 kernel/sched/core.c:3880 schedule+0xa8/0x270 kernel/sched/core.c:3944 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 v4l2_release+0x1d7/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:451 __fput+0x302/0x890 fs/file_table.c:280 ____fput+0x16/0x20 fs/file_table.c:313 task_work_run+0x14a/0x1c0 kernel/task_work.c:113 get_signal+0x207c/0x2500 kernel/signal.c:2523 do_signal+0x87/0x1700 arch/x86/kernel/signal.c:815 exit_to_usermode_loop+0x251/0x2d0 arch/x86/entry/common.c:159 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x5af/0x6a0 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4576b9 Code: Bad RIP value. RSP: 002b:00007f49c7154c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000011 RAX: fffffffffffffe00 RBX: 0000000000000004 RCX: 00000000004576b9 RDX: 00000000000000d6 RSI: 0000000020000140 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f49c71556d4 R13: 00000000004c3377 R14: 00000000004d4f98 R15: 00000000ffffffff INFO: task syz-executor3:9102 blocked for more than 144 seconds. Not tainted 5.3.0-rc4+ #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor3 D28160 9102 6189 0x00000004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x75b/0x15a0 kernel/sched/core.c:3880 schedule+0xa8/0x270 kernel/sched/core.c:3944 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 v4l2_release+0x1d7/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:451 __fput+0x302/0x890 fs/file_table.c:280 ____fput+0x16/0x20 fs/file_table.c:313 task_work_run+0x14a/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x280/0x2d0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x5af/0x6a0 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411021 Code: 4c 89 f6 48 89 c7 48 89 ca 48 89 4c 24 10 4c 89 54 24 08 e8 b1 a3 ff ff 48 8b 4c 24 10 41 c6 04 0f 00 4c 8b 7c 24 28 4c 8b 54 <24> 08 45 0f b6 37 e9 db fc ff ff 0f 1f 40 00 41 80 f8 29 74 7f ba RSP: 002b:00007ffe43dc9720 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411021 RDX: 0000000000000000 RSI: 0000000000730128 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffe43dc9640 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000044 R15: 0000000000000003 INFO: task syz-executor3:9104 blocked for more than 145 seconds. Not tainted 5.3.0-rc4+ #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor3 D29136 9104 6189 0x00004006 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x75b/0x15a0 kernel/sched/core.c:3880 schedule+0xa8/0x270 kernel/sched/core.c:3944 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 v4l2_release+0x1d7/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:451 __fput+0x302/0x890 fs/file_table.c:280 ____fput+0x16/0x20 fs/file_table.c:313 task_work_run+0x14a/0x1c0 kernel/task_work.c:113 get_signal+0x207c/0x2500 kernel/signal.c:2523 do_signal+0x87/0x1700 arch/x86/kernel/signal.c:815 exit_to_usermode_loop+0x251/0x2d0 arch/x86/entry/common.c:159 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x5af/0x6a0 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4576b9 Code: Bad RIP value. RSP: 002b:00007fb123688c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000011 RAX: fffffffffffffe00 RBX: 0000000000000004 RCX: 00000000004576b9 RDX: 00000000000000d6 RSI: 0000000020000140 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb1236896d4 R13: 00000000004c3377 R14: 00000000004d4f98 R15: 00000000ffffffff INFO: task syz-executor2:9106 blocked for more than 145 seconds. Not tainted 5.3.0-rc4+ #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D28160 9106 6197 0x00000004 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x75b/0x15a0 kernel/sched/core.c:3880 schedule+0xa8/0x270 kernel/sched/core.c:3944 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 v4l2_release+0x1d7/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:451 __fput+0x302/0x890 fs/file_table.c:280 ____fput+0x16/0x20 fs/file_table.c:313 task_work_run+0x14a/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x280/0x2d0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x5af/0x6a0 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411021 Code: 4c 89 f6 48 89 c7 48 89 ca 48 89 4c 24 10 4c 89 54 24 08 e8 b1 a3 ff ff 48 8b 4c 24 10 41 c6 04 0f 00 4c 8b 7c 24 28 4c 8b 54 <24> 08 45 0f b6 37 e9 db fc ff ff 0f 1f 40 00 41 80 f8 29 74 7f ba RSP: 002b:00007ffefb72afd0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411021 RDX: 0000000000000000 RSI: 0000000000730128 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffefb72aef0 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000044 R15: 0000000000000002 INFO: task syz-executor2:9107 blocked for more than 145 seconds. Not tainted 5.3.0-rc4+ #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D29136 9107 6197 0x00004006 Call Trace: context_switch kernel/sched/core.c:3254 [inline] __schedule+0x75b/0x15a0 kernel/sched/core.c:3880 schedule+0xa8/0x270 kernel/sched/core.c:3944 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003 __mutex_lock_common kernel/locking/mutex.c:1007 [inline] __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092 v4l2_release+0x1d7/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:451 __fput+0x302/0x890 fs/file_table.c:280 ____fput+0x16/0x20 fs/file_table.c:313 task_work_run+0x14a/0x1c0 kernel/task_work.c:113 get_signal+0x207c/0x2500 kernel/signal.c:2523 do_signal+0x87/0x1700 arch/x86/kernel/signal.c:815 exit_to_usermode_loop+0x251/0x2d0 arch/x86/entry/common.c:159 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x5af/0x6a0 arch/x86/entry/common.c:299 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4576b9 Code: Bad RIP value. RSP: 002b:00007f2f9a2efc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000011 RAX: fffffffffffffe00 RBX: 0000000000000004 RCX: 00000000004576b9 RDX: 00000000000000d6 RSI: 0000000020000140 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2f9a2f06d4 R13: 00000000004c3377 R14: 00000000004d4f98 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1026: #0: 00000000fb87f49e (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:5256 1 lock held by rsyslogd/5949: #0: 000000003221ee43 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:801 2 locks held by getty/6039: #0: 000000001c9f216f (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: 00000000bbf06483 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/6040: #0: 00000000ae7d2b34 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: 00000000a035cbcf (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/6041: #0: 000000008b4b243d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: 00000000776ef706 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/6042: #0: 0000000007f83e00 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: 00000000f5c035b3 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/6043: #0: 0000000031819257 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: 0000000075a36e9e (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/6044: #0: 00000000bc3392d2 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: 0000000036d0f032 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by getty/6045: #0: 00000000d5c68ca5 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:340 #1: 00000000f6d69caa (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 drivers/tty/n_tty.c:2156 2 locks held by syz-executor0/9092: #0: 000000001cadffbc (&mdev->req_queue_mutex){+.+.}, at: v4l2_release+0x1d7/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:451 #1: 0000000077da9a44 (&dev->mutex#3){+.+.}, at: _vb2_fop_release+0x3f/0x2a0 drivers/media/common/videobuf2/videobuf2-v4l2.c:1037 1 lock held by syz-executor4/9091: #0: 000000001cadffbc (&mdev->req_queue_mutex){+.+.}, at: v4l2_release+0x1d7/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:451 1 lock held by syz-executor1/9099: #0: 000000001cadffbc (&mdev->req_queue_mutex){+.+.}, at: v4l2_release+0x1d7/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:451 1 lock held by syz-executor1/9105: #0: 000000001cadffbc (&mdev->req_queue_mutex){+.+.}, at: v4l2_release+0x1d7/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:451 1 lock held by syz-executor5/9100: #0: 000000001cadffbc (&mdev->req_queue_mutex){+.+.}, at: v4l2_release+0x1d7/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:451 1 lock held by syz-executor5/9101: #0: 000000001cadffbc (&mdev->req_queue_mutex){+.+.}, at: v4l2_release+0x1d7/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:451 1 lock held by syz-executor3/9102: #0: 000000001cadffbc (&mdev->req_queue_mutex){+.+.}, at: v4l2_release+0x1d7/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:451 1 lock held by syz-executor3/9104: #0: 000000001cadffbc (&mdev->req_queue_mutex){+.+.}, at: v4l2_release+0x1d7/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:451 1 lock held by vivid-000-vid-c/9103: #0: 0000000077da9a44 (&dev->mutex#3){+.+.}, at: vivid_thread_vid_cap+0x4af/0x2bf0 drivers/media/platform/vivid/vivid-kthread-cap.c:798 1 lock held by syz-executor2/9106: #0: 000000001cadffbc (&mdev->req_queue_mutex){+.+.}, at: v4l2_release+0x1d7/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:451 1 lock held by syz-executor2/9107: #0: 000000001cadffbc (&mdev->req_queue_mutex){+.+.}, at: v4l2_release+0x1d7/0x3a0 drivers/media/v4l2-core/v4l2-dev.c:451 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1026 Comm: khungtaskd Not tainted 5.3.0-rc4+ #1 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 nmi_cpu_backtrace.cold+0x70/0xb2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x23b/0x28b lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline] watchdog+0x9d0/0xef0 kernel/hung_task.c:289 kthread+0x364/0x430 kernel/kthread.c:255 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60