Bluetooth: hci5: command 0x0406 tx timeout Bluetooth: hci3: command 0x0406 tx timeout Bluetooth: hci4: command 0x0406 tx timeout ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 INFO: task syz-executor.3:9961 blocked for more than 140 seconds. Not tainted 4.19.205-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D27432 9961 8457 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x80c/0x1f70 kernel/sched/core.c:3517 schedule+0x7f/0x1b0 kernel/sched/core.c:3561 schedule_timeout+0x6f6/0xd20 kernel/time/timer.c:1794 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+0xc9/0x4c0 kernel/kthread.c:588 ext4_fill_super+0x6991/0xb570 fs/ext4/super.c:4646 mount_bdev+0x26f/0x330 fs/super.c:1158 ext4_mount+0x10/0x20 fs/ext4/super.c:6054 mount_fs+0x7f/0x2b0 fs/super.c:1261 vfs_kern_mount.part.11+0x58/0x3d0 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2492 [inline] do_mount+0x376/0x2630 fs/namespace.c:2822 ksys_mount+0xb1/0xd0 fs/namespace.c:3038 __do_sys_mount fs/namespace.c:3052 [inline] __se_sys_mount fs/namespace.c:3049 [inline] __x64_sys_mount+0xb9/0x150 fs/namespace.c:3049 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x467afa Code: Bad RIP value. RSP: 002b:00007f02e8af5fa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000380 RCX: 0000000000467afa RDX: 0000000020000000 RSI: 00000000200000c0 RDI: 00007f02e8af6000 RBP: 00007f02e8af6040 R08: 00007f02e8af6040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000000 R13: 00000000200000c0 R14: 00007f02e8af6000 R15: 0000000020000200 INFO: task syz-executor.5:9998 blocked for more than 140 seconds. Not tainted 4.19.205-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D27432 9998 8463 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x80c/0x1f70 kernel/sched/core.c:3517 schedule+0x7f/0x1b0 kernel/sched/core.c:3561 schedule_timeout+0x6f6/0xd20 kernel/time/timer.c:1794 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+0xc9/0x4c0 kernel/kthread.c:588 ext4_fill_super+0x6991/0xb570 fs/ext4/super.c:4646 mount_bdev+0x26f/0x330 fs/super.c:1158 ext4_mount+0x10/0x20 fs/ext4/super.c:6054 mount_fs+0x7f/0x2b0 fs/super.c:1261 vfs_kern_mount.part.11+0x58/0x3d0 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2492 [inline] do_mount+0x376/0x2630 fs/namespace.c:2822 ksys_mount+0xb1/0xd0 fs/namespace.c:3038 __do_sys_mount fs/namespace.c:3052 [inline] __se_sys_mount fs/namespace.c:3049 [inline] __x64_sys_mount+0xb9/0x150 fs/namespace.c:3049 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x467afa Code: Bad RIP value. RSP: 002b:00007f79844c5fa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000380 RCX: 0000000000467afa RDX: 0000000020000000 RSI: 00000000200000c0 RDI: 00007f79844c6000 RBP: 00007f79844c6040 R08: 00007f79844c6040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000000 R13: 00000000200000c0 R14: 00007f79844c6000 R15: 0000000020000200 INFO: task syz-executor.4:10025 blocked for more than 140 seconds. Not tainted 4.19.205-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D27432 10025 8467 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x80c/0x1f70 kernel/sched/core.c:3517 schedule+0x7f/0x1b0 kernel/sched/core.c:3561 schedule_timeout+0x6f6/0xd20 kernel/time/timer.c:1794 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+0xc9/0x4c0 kernel/kthread.c:588 ext4_fill_super+0x6991/0xb570 fs/ext4/super.c:4646 mount_bdev+0x26f/0x330 fs/super.c:1158 ext4_mount+0x10/0x20 fs/ext4/super.c:6054 mount_fs+0x7f/0x2b0 fs/super.c:1261 vfs_kern_mount.part.11+0x58/0x3d0 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2492 [inline] do_mount+0x376/0x2630 fs/namespace.c:2822 ksys_mount+0xb1/0xd0 fs/namespace.c:3038 __do_sys_mount fs/namespace.c:3052 [inline] __se_sys_mount fs/namespace.c:3049 [inline] __x64_sys_mount+0xb9/0x150 fs/namespace.c:3049 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x467afa Code: Bad RIP value. RSP: 002b:00007fe0d0724fa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000380 RCX: 0000000000467afa RDX: 0000000020000000 RSI: 00000000200000c0 RDI: 00007fe0d0725000 RBP: 00007fe0d0725040 R08: 00007fe0d0725040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000000 R13: 00000000200000c0 R14: 00007fe0d0725000 R15: 0000000020000200 Showing all locks held in the system: 1 lock held by khungtaskd/1569: #0: 00000000a8b1d6d5 (rcu_read_lock){....}, at: debug_show_all_locks+0x5b/0x27a kernel/locking/lockdep.c:4443 1 lock held by syz-executor.3/9961: #0: 000000000748f6e8 (&type->s_umount_key#25/1){+.+.}, at: alloc_super fs/super.c:226 [inline] #0: 000000000748f6e8 (&type->s_umount_key#25/1){+.+.}, at: sget_userns+0x1a1/0xb70 fs/super.c:519 1 lock held by syz-executor.5/9998: #0: 00000000884bd1f0 (&type->s_umount_key#25/1){+.+.}, at: alloc_super fs/super.c:226 [inline] #0: 00000000884bd1f0 (&type->s_umount_key#25/1){+.+.}, at: sget_userns+0x1a1/0xb70 fs/super.c:519 1 lock held by syz-executor.4/10025: #0: 000000003830227d (&type->s_umount_key#25/1){+.+.}, at: alloc_super fs/super.c:226 [inline] #0: 000000003830227d (&type->s_umount_key#25/1){+.+.}, at: sget_userns+0x1a1/0xb70 fs/super.c:519 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1569 Comm: khungtaskd Not tainted 4.19.205-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+0x17c/0x226 lib/dump_stack.c:118 nmi_cpu_backtrace.cold.0+0x3c/0x78 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0xf6/0x120 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:203 [inline] watchdog+0x5c3/0xb40 kernel/hung_task.c:287 kthread+0x347/0x410 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0x12/0x20 arch/x86/include/asm/irqflags.h:60