Bluetooth: hci4: command 0x0406 tx timeout ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 INFO: task syz-executor.5:8144 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D23760 8144 1 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_timeout+0x92d/0xfe0 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+0x29c/0x470 kernel/sched/completion.c:115 kthread_stop+0x109/0x6b0 kernel/kthread.c:588 ext4_put_super+0x93c/0x1010 fs/ext4/super.c:1054 generic_shutdown_super+0x144/0x370 fs/super.c:456 kill_block_super+0x97/0xf0 fs/super.c:1185 deactivate_locked_super+0x94/0x160 fs/super.c:329 deactivate_super+0x174/0x1a0 fs/super.c:360 cleanup_mnt+0x1a8/0x290 fs/namespace.c:1098 task_work_run+0x148/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f6d96eb0537 Code: Bad RIP value. RSP: 002b:00007ffdebc46158 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f6d96eb0537 RDX: 00007ffdebc4622b RSI: 000000000000000a RDI: 00007ffdebc46220 RBP: 00007ffdebc46220 R08: 00000000ffffffff R09: 00007ffdebc45ff0 R10: 0000555556f91873 R11: 0000000000000246 R12: 00007f6d96f09b24 R13: 00007ffdebc472e0 R14: 0000555556f91810 R15: 00007ffdebc47320 Showing all locks held in the system: 1 lock held by khungtaskd/1571: #0: 0000000003d7e503 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by syz-executor.5/8144: #0: 00000000ca777c80 (&type->s_umount_key#36){++++}, at: deactivate_super+0x16c/0x1a0 fs/super.c:359 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1571 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 6196 Comm: kworker/u4:5 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Workqueue: phy12 ieee80211_iface_work RIP: 0010:task_css include/linux/cgroup.h:483 [inline] RIP: 0010:task_ca kernel/sched/cpuacct.c:43 [inline] RIP: 0010:cpuacct_charge+0xe0/0x350 kernel/sched/cpuacct.c:349 Code: 00 48 8d bb d0 10 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 4a 02 00 00 48 8b ab d0 10 00 00 4b 9c 06 00 85 c0 74 0d 80 3d 79 89 c4 09 00 0f 84 58 01 00 00 RSP: 0018:ffff88808ecc7ab0 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: ffff8880a3fd0000 RCX: ffffffff81518c83 RDX: 1ffff110147fa21a RSI: 0000000000000004 RDI: ffff8880a3fd10d0 RBP: ffffffff89fa5f60 R08: 0000000000000000 R09: ffffed101742455a R10: ffff8880ba122ad3 R11: ffffffff8c66505b R12: 0000000000003665 R13: ffff8880a3fd00d8 R14: 0000000000000001 R15: ffff8880a3fd0000 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0fe3cd8010 CR3: 00000000a1053000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: cgroup_account_cputime include/linux/cgroup.h:767 [inline] update_curr+0x2ce/0x870 kernel/sched/fair.c:858 enqueue_entity+0xdba/0x3850 kernel/sched/fair.c:3955 enqueue_task_fair+0x12e/0x2270 kernel/sched/fair.c:5177 ttwu_activate kernel/sched/core.c:1639 [inline] ttwu_do_activate+0xce/0x1e0 kernel/sched/core.c:1698 ttwu_queue kernel/sched/core.c:1843 [inline] try_to_wake_up+0x700/0x1050 kernel/sched/core.c:2052 wake_up_worker kernel/workqueue.c:839 [inline] process_one_work+0x73d/0x1570 kernel/workqueue.c:2116 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415