Bluetooth: hci1: 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.3:13979 blocked for more than 140 seconds. Not tainted 4.19.172-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D27136 13979 8138 0x00000004 Call Trace: context_switch syzkaller/managers/linux-4-19/kernel/kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 syzkaller/managers/linux-4-19/kernel/kernel/sched/core.c:3517 schedule+0x8d/0x1b0 syzkaller/managers/linux-4-19/kernel/kernel/sched/core.c:3561 schedule_timeout+0x92d/0xfe0 syzkaller/managers/linux-4-19/kernel/kernel/time/timer.c:1794 do_wait_for_common syzkaller/managers/linux-4-19/kernel/kernel/sched/completion.c:83 [inline] __wait_for_common syzkaller/managers/linux-4-19/kernel/kernel/sched/completion.c:104 [inline] wait_for_common+0x29c/0x470 syzkaller/managers/linux-4-19/kernel/kernel/sched/completion.c:115 flush_workqueue+0x40b/0x13e0 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2715 nbd_start_device_ioctl syzkaller/managers/linux-4-19/kernel/drivers/block/nbd.c:1268 [inline] __nbd_ioctl syzkaller/managers/linux-4-19/kernel/drivers/block/nbd.c:1339 [inline] nbd_ioctl+0x75b/0xbe0 syzkaller/managers/linux-4-19/kernel/drivers/block/nbd.c:1379 __blkdev_driver_ioctl syzkaller/managers/linux-4-19/kernel/block/ioctl.c:303 [inline] blkdev_ioctl+0x5cb/0x1a80 syzkaller/managers/linux-4-19/kernel/block/ioctl.c:601 block_ioctl+0xe9/0x130 syzkaller/managers/linux-4-19/kernel/fs/block_dev.c:1906 vfs_ioctl syzkaller/managers/linux-4-19/kernel/fs/ioctl.c:46 [inline] file_ioctl syzkaller/managers/linux-4-19/kernel/fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 syzkaller/managers/linux-4-19/kernel/fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 syzkaller/managers/linux-4-19/kernel/fs/ioctl.c:705 __do_sys_ioctl syzkaller/managers/linux-4-19/kernel/fs/ioctl.c:712 [inline] __se_sys_ioctl syzkaller/managers/linux-4-19/kernel/fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 syzkaller/managers/linux-4-19/kernel/fs/ioctl.c:710 do_syscall_64+0xf9/0x620 syzkaller/managers/linux-4-19/kernel/arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x465d99 Code: 06 fd ff 48 8d 05 6a 13 38 00 48 89 04 24 48 c7 44 24 08 1c 00 00 00 e8 d5 06 fd ff e8 90 e8 fc ff 48 8d 05 25 1d 3a 00 48 89 <04> 24 48 c7 44 24 08 26 00 00 00 e8 b7 06 fd ff e8 72 e8 fc ff 48 RSP: 002b:00007f70c7b1c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465d99 RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000003 RBP: 00000000004bcf27 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffcd282335f R14: 00007f70c7b1c300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/1566: #0: 00000000c1162a5a (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 syzkaller/managers/linux-4-19/kernel/kernel/locking/lockdep.c:4440 2 locks held by kworker/u5:0/1712: #0: 000000004e66a02c ((wq_completion)"knbd%d-recv"nbd->index){+.+.}, at: process_one_work+0x767/0x1570 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2126 #1: 00000000d51b85ce ((work_completion)(&args->work)){+.+.}, at: process_one_work+0x79c/0x1570 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2130 1 lock held by systemd-journal/4690: #0: 0000000057dd46ae (&rq->lock){-.-.}, at: rq_lock syzkaller/managers/linux-4-19/kernel/kernel/sched/sched.h:1824 [inline] #0: 0000000057dd46ae (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 syzkaller/managers/linux-4-19/kernel/kernel/sched/core.c:3455 1 lock held by in:imklog/7807: #0: 00000000b899ccc9 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 syzkaller/managers/linux-4-19/kernel/fs/file.c:767 3 locks held by kworker/u4:9/11192: #0: 0000000057dd46ae (&rq->lock){-.-.}, at: idle_balance syzkaller/managers/linux-4-19/kernel/kernel/sched/fair.c:9701 [inline] #0: 0000000057dd46ae (&rq->lock){-.-.}, at: pick_next_task_fair+0x556/0x1570 syzkaller/managers/linux-4-19/kernel/kernel/sched/fair.c:6840 #1: 00000000c1162a5a (rcu_read_lock){....}, at: cpu_of syzkaller/managers/linux-4-19/kernel/kernel/sched/sched.h:921 [inline] #1: 00000000c1162a5a (rcu_read_lock){....}, at: __update_idle_core+0x39/0x3e0 syzkaller/managers/linux-4-19/kernel/kernel/sched/fair.c:6057 #2: 00000000c1162a5a (rcu_read_lock){....}, at: spin_lock_bh syzkaller/managers/linux-4-19/kernel/./include/linux/spinlock.h:334 [inline] #2: 00000000c1162a5a (rcu_read_lock){....}, at: batadv_nc_purge_paths+0xdc/0x310 syzkaller/managers/linux-4-19/kernel/net/batman-adv/network-coding.c:453 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1566 Comm: khungtaskd Not tainted 4.19.172-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack syzkaller/managers/linux-4-19/kernel/lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef syzkaller/managers/linux-4-19/kernel/lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 syzkaller/managers/linux-4-19/kernel/lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 syzkaller/managers/linux-4-19/kernel/lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace syzkaller/managers/linux-4-19/kernel/./include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks syzkaller/managers/linux-4-19/kernel/kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 syzkaller/managers/linux-4-19/kernel/kernel/hung_task.c:287 kthread+0x33f/0x460 syzkaller/managers/linux-4-19/kernel/kernel/kthread.c:259 ret_from_fork+0x24/0x30 syzkaller/managers/linux-4-19/kernel/arch/x86/entry/entry_64.S:415 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 11192 Comm: kworker/u4:9 Not tainted 4.19.172-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker RIP: 0010:lock_release+0x454/0x8b0 syzkaller/managers/linux-4-19/kernel/kernel/locking/lockdep.c:3930 Code: 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 49 c7 04 04 00 00 00 00 48 8b 44 24 70 65 48 2b 04 25 28 00 00 00 0f 85 67 03 00 00 <48> 83 c4 78 5b 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b 05 f6 4f b6 7e RSP: 0018:ffff888056ddfc00 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff888052214640 RCX: 1ffff1100a4429e3 RDX: dffffc0000000000 RSI: 0000000000000003 RDI: 0000000000000286 RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000002 R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff1100adbbf83 R13: 4c395c3f756a1b98 R14: ffff888052214640 R15: 0000000000000003 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa483793018 CR3: 00000000a9f7d000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_lock_release syzkaller/managers/linux-4-19/kernel/./include/linux/rcupdate.h:247 [inline] rcu_read_unlock syzkaller/managers/linux-4-19/kernel/./include/linux/rcupdate.h:681 [inline] batadv_nc_purge_orig_hash syzkaller/managers/linux-4-19/kernel/net/batman-adv/network-coding.c:423 [inline] batadv_nc_worker+0x66c/0xd50 syzkaller/managers/linux-4-19/kernel/net/batman-adv/network-coding.c:730 process_one_work+0x864/0x1570 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2155 worker_thread+0x64c/0x1130 syzkaller/managers/linux-4-19/kernel/kernel/workqueue.c:2298 kthread+0x33f/0x460 syzkaller/managers/linux-4-19/kernel/kernel/kthread.c:259 ret_from_fork+0x24/0x30 syzkaller/managers/linux-4-19/kernel/arch/x86/entry/entry_64.S:415