Bluetooth: hci0: 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.2:19354 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.2 D28032 19354 14425 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 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 grab_super+0xa2/0x350 fs/super.c:383 sget_userns+0x352/0xcd0 fs/super.c:511 sget+0x102/0x140 fs/super.c:570 mount_bdev+0xf8/0x3b0 fs/super.c:1131 mount_fs+0xa3/0x310 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2492 [inline] do_mount+0x115c/0x2f50 fs/namespace.c:2822 ksys_mount+0xcf/0x130 fs/namespace.c:3038 __do_sys_mount fs/namespace.c:3052 [inline] __se_sys_mount fs/namespace.c:3049 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3049 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fc17af3201a Code: Bad RIP value. RSP: 002b:00007fc178463fa8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007fc17af3201a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fc178464000 RBP: 00007fc178464040 R08: 00007fc178464040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 00007fc178464000 R15: 0000000020013500 Showing all locks held in the system: 1 lock held by khungtaskd/1569: #0: 000000005683ce87 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by in:imklog/7799: #0: 0000000064c36ae6 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 1 lock held by syz-executor.2/19347: 2 locks held by syz-executor.2/19354: #0: 0000000034535072 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x90/0x3b0 fs/super.c:1125 #1: 00000000278943ec (&type->s_umount_key#59){+.+.}, at: grab_super+0xa2/0x350 fs/super.c:383 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1569 Comm: khungtaskd Not tainted 4.19.211-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+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 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 9368 Comm: kworker/0:4 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: (null) (events_power_efficient) RIP: 0010:switch_ldt arch/x86/include/asm/mmu_context.h:176 [inline] RIP: 0010:switch_mm_irqs_off+0x7bc/0x1340 arch/x86/mm/tlb.c:423 Code: 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 33 09 00 00 48 0b ab 38 04 00 00 0f 85 b6 06 00 00 <48> c7 c0 60 37 24 8d 48 ba 00 00 00 00 00 fc ff df 48 89 c1 83 e0 RSP: 0018:ffff8880503e7d18 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: ffff8880a30fc5c0 RCX: 0000000000000000 RDX: 1ffff1101461f93f RSI: 0000000000000000 RDI: ffff8880a30fc9f8 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000001 R12: 00000000003406f0 R13: 0000000000000086 R14: 0000000000003f21 R15: ffffffff89f18280 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000130 CR3: 000000009cde2000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: context_switch kernel/sched/core.c:2816 [inline] __schedule+0x7d4/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 worker_thread+0x14c/0x1130 kernel/workqueue.c:2317 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 9: fc ff df c: 48 89 fa mov %rdi,%rdx f: 48 c1 ea 03 shr $0x3,%rdx 13: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 17: 0f 85 33 09 00 00 jne 0x950 1d: 48 0b ab 38 04 00 00 or 0x438(%rbx),%rbp 24: 0f 85 b6 06 00 00 jne 0x6e0 * 2a: 48 c7 c0 60 37 24 8d mov $0xffffffff8d243760,%rax <-- trapping instruction 31: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 38: fc ff df 3b: 48 89 c1 mov %rax,%rcx 3e: 83 .byte 0x83 3f: e0 .byte 0xe0