Bluetooth: hci3: command 0x0406 tx timeout Bluetooth: hci4: command 0x0406 tx timeout NOHZ: local_softirq_pending 08 NOHZ: local_softirq_pending 08 NOHZ: local_softirq_pending 08 INFO: task syz-executor.2:10172 blocked for more than 140 seconds. Not tainted 4.18.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28248 10172 8542 0x00080004 Call Trace: context_switch kernel/sched/core.c:2853 [inline] __schedule+0x80c/0x1fc0 kernel/sched/core.c:3501 schedule+0x7f/0x1b0 kernel/sched/core.c:3545 schedule_timeout+0x70e/0xd20 kernel/time/timer.c:1777 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common+0x3fb/0x5d0 kernel/sched/completion.c:115 wait_for_completion+0x18/0x20 kernel/sched/completion.c:136 kthread_stop+0xc9/0x550 kernel/kthread.c:548 vivid_stop_generating_vid_cap+0x191/0x5fe drivers/media/platform/vivid/vivid-kthread-cap.c:919 vid_cap_stop_streaming+0x75/0xd0 drivers/media/platform/vivid/vivid-vid-cap.c:256 __vb2_queue_cancel+0x94/0x880 drivers/media/common/videobuf2/videobuf2-core.c:1654 vb2_core_streamoff+0x4b/0x100 drivers/media/common/videobuf2/videobuf2-core.c:1790 __vb2_cleanup_fileio+0x69/0x140 drivers/media/common/videobuf2/videobuf2-core.c:2311 vb2_core_queue_release+0xf/0x70 drivers/media/common/videobuf2/videobuf2-core.c:2038 vb2_queue_release drivers/media/common/videobuf2/videobuf2-v4l2.c:672 [inline] _vb2_fop_release+0x1ac/0x280 drivers/media/common/videobuf2/videobuf2-v4l2.c:843 vb2_fop_release+0x66/0xd0 drivers/media/common/videobuf2/videobuf2-v4l2.c:857 vivid_fop_release+0x15f/0x3a0 drivers/media/platform/vivid/vivid-core.c:474 v4l2_release+0xeb/0x1a0 drivers/media/v4l2-core/v4l2-dev.c:448 __fput+0x232/0x780 fs/file_table.c:209 ____fput+0x9/0x10 fs/file_table.c:243 task_work_run+0x111/0x180 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:192 [inline] exit_to_usermode_loop+0x180/0x1e0 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x47a/0x540 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x41940b Code: Bad RIP value. RSP: 002b:00007ffedaa35200 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000006 RCX: 000000000041940b RDX: 0000000000570958 RSI: 0000000000000001 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b319200e0 R10: 00007ffedaa352f0 R11: 0000000000000293 R12: 000000000000bff0 R13: 00000000000003e8 R14: 000000000056bf80 R15: 000000000000bfd9 INFO: task syz-executor.1:10195 blocked for more than 140 seconds. Not tainted 4.18.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28248 10195 8546 0x00080004 Call Trace: context_switch kernel/sched/core.c:2853 [inline] __schedule+0x80c/0x1fc0 kernel/sched/core.c:3501 schedule+0x7f/0x1b0 kernel/sched/core.c:3545 schedule_timeout+0x70e/0xd20 kernel/time/timer.c:1777 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common+0x3fb/0x5d0 kernel/sched/completion.c:115 wait_for_completion+0x18/0x20 kernel/sched/completion.c:136 kthread_stop+0xc9/0x550 kernel/kthread.c:548 vivid_stop_generating_vid_cap+0x191/0x5fe drivers/media/platform/vivid/vivid-kthread-cap.c:919 vid_cap_stop_streaming+0x75/0xd0 drivers/media/platform/vivid/vivid-vid-cap.c:256 __vb2_queue_cancel+0x94/0x880 drivers/media/common/videobuf2/videobuf2-core.c:1654 vb2_core_streamoff+0x4b/0x100 drivers/media/common/videobuf2/videobuf2-core.c:1790 __vb2_cleanup_fileio+0x69/0x140 drivers/media/common/videobuf2/videobuf2-core.c:2311 vb2_core_queue_release+0xf/0x70 drivers/media/common/videobuf2/videobuf2-core.c:2038 vb2_queue_release drivers/media/common/videobuf2/videobuf2-v4l2.c:672 [inline] _vb2_fop_release+0x1ac/0x280 drivers/media/common/videobuf2/videobuf2-v4l2.c:843 vb2_fop_release+0x66/0xd0 drivers/media/common/videobuf2/videobuf2-v4l2.c:857 vivid_fop_release+0x15f/0x3a0 drivers/media/platform/vivid/vivid-core.c:474 v4l2_release+0xeb/0x1a0 drivers/media/v4l2-core/v4l2-dev.c:448 __fput+0x232/0x780 fs/file_table.c:209 ____fput+0x9/0x10 fs/file_table.c:243 task_work_run+0x111/0x180 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:192 [inline] exit_to_usermode_loop+0x180/0x1e0 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x47a/0x540 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x41940b Code: 00 00 00 48 85 c0 0f 84 9b 07 00 00 0f b6 48 17 83 e1 1f 80 f9 16 0f 85 1a 07 00 00 48 83 78 30 00 0f 84 f6 06 00 00 48 89 84 <24> 90 00 00 00 48 8b 84 24 f0 00 00 00 48 89 04 24 0f 57 c0 0f 11 RSP: 002b:00007ffc9061ebb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000006 RCX: 000000000041940b RDX: 0000000000570958 RSI: 0000000000000001 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b31d200e0 R10: 00007ffc9061eca0 R11: 0000000000000293 R12: 000000000000c040 R13: 00000000000003e8 R14: 000000000056bf80 R15: 000000000000c01a INFO: task syz-executor.3:10216 blocked for more than 140 seconds. Not tainted 4.18.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28248 10216 8554 0x00080004 Call Trace: context_switch kernel/sched/core.c:2853 [inline] __schedule+0x80c/0x1fc0 kernel/sched/core.c:3501 schedule+0x7f/0x1b0 kernel/sched/core.c:3545 schedule_timeout+0x70e/0xd20 kernel/time/timer.c:1777 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common+0x3fb/0x5d0 kernel/sched/completion.c:115 wait_for_completion+0x18/0x20 kernel/sched/completion.c:136 kthread_stop+0xc9/0x550 kernel/kthread.c:548 vivid_stop_generating_vid_cap+0x191/0x5fe drivers/media/platform/vivid/vivid-kthread-cap.c:919 vid_cap_stop_streaming+0x75/0xd0 drivers/media/platform/vivid/vivid-vid-cap.c:256 __vb2_queue_cancel+0x94/0x880 drivers/media/common/videobuf2/videobuf2-core.c:1654 vb2_core_streamoff+0x4b/0x100 drivers/media/common/videobuf2/videobuf2-core.c:1790 __vb2_cleanup_fileio+0x69/0x140 drivers/media/common/videobuf2/videobuf2-core.c:2311 vb2_core_queue_release+0xf/0x70 drivers/media/common/videobuf2/videobuf2-core.c:2038 vb2_queue_release drivers/media/common/videobuf2/videobuf2-v4l2.c:672 [inline] _vb2_fop_release+0x1ac/0x280 drivers/media/common/videobuf2/videobuf2-v4l2.c:843 vb2_fop_release+0x66/0xd0 drivers/media/common/videobuf2/videobuf2-v4l2.c:857 vivid_fop_release+0x15f/0x3a0 drivers/media/platform/vivid/vivid-core.c:474 v4l2_release+0xeb/0x1a0 drivers/media/v4l2-core/v4l2-dev.c:448 __fput+0x232/0x780 fs/file_table.c:209 ____fput+0x9/0x10 fs/file_table.c:243 task_work_run+0x111/0x180 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:192 [inline] exit_to_usermode_loop+0x180/0x1e0 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x47a/0x540 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x41940b Code: 00 00 00 48 85 c0 0f 84 9b 07 00 00 0f b6 48 17 83 e1 1f 80 f9 16 0f 85 1a 07 00 00 48 83 78 30 00 0f 84 f6 06 00 00 48 89 84 <24> 90 00 00 00 48 8b 84 24 f0 00 00 00 48 89 04 24 0f 57 c0 0f 11 RSP: 002b:00007ffcf27f8ce0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000006 RCX: 000000000041940b RDX: 0000000000570958 RSI: 0000000000000001 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b324200e0 R10: 00007ffcf27f8dd0 R11: 0000000000000293 R12: 000000000000c08f R13: 00000000000003e8 R14: 000000000056bf80 R15: 000000000000c07b Showing all locks held in the system: 1 lock held by khungtaskd/1509: #0: 00000000a9af4bcf (rcu_read_lock){....}, at: debug_show_all_locks+0x5b/0x27a kernel/locking/lockdep.c:4461 2 locks held by in:imklog/7858: ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1509 Comm: khungtaskd Not tainted 4.18.0-syzkaller #0 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+0x15a/0x20d lib/dump_stack.c:113 nmi_cpu_backtrace.cold.0+0x13/0xb6 lib/nmi_backtrace.c:103 nmi_trigger_cpumask_backtrace+0xf6/0x11a 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:138 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:196 [inline] watchdog+0x512/0x940 kernel/hung_task.c:252 kthread+0x316/0x3d0 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:412 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:54