Bluetooth: hci1 command 0x0406 tx timeout
Bluetooth: hci0 command 0x0406 tx timeout
Bluetooth: hci3 command 0x0406 tx timeout
Bluetooth: hci4 command 0x0406 tx timeout
Bluetooth: hci2 command 0x0406 tx timeout
INFO: task syz-executor.3:8033 blocked for more than 140 seconds.
Not tainted 4.14.198-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.3 D26568 8033 6379 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3384
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_timeout+0x80a/0xe90 kernel/time/timer.c:1731
do_wait_for_common kernel/sched/completion.c:91 [inline]
__wait_for_common kernel/sched/completion.c:112 [inline]
wait_for_common+0x272/0x430 kernel/sched/completion.c:123
flush_work+0x3fe/0x770 kernel/workqueue.c:2893
__cancel_work_timer+0x321/0x460 kernel/workqueue.c:2964
p9_conn_destroy net/9p/trans_fd.c:899 [inline]
p9_fd_close+0x299/0x420 net/9p/trans_fd.c:925
p9_client_create+0x736/0x12c0 net/9p/client.c:1095
v9fs_session_init+0x1c5/0x1540 fs/9p/v9fs.c:422
v9fs_mount+0x73/0x860 fs/9p/vfs_super.c:135
mount_fs+0x92/0x2a0 fs/super.c:1237
vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
vfs_kern_mount fs/namespace.c:1036 [inline]
do_new_mount fs/namespace.c:2549 [inline]
do_mount+0xe53/0x2a00 fs/namespace.c:2879
SYSC_mount fs/namespace.c:3095 [inline]
SyS_mount+0xa8/0x120 fs/namespace.c:3072
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45de59
RSP: 002b:00007f7d44ddac78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000021780 RCX: 000000000045de59
RDX: 0000000020000200 RSI: 0000000020000180 RDI: 0000000000000000
RBP: 000000000118bf70 R08: 0000000020000380 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007ffd9d01909f R14: 00007f7d44ddb9c0 R15: 000000000118bf2c
Showing all locks held in the system:
1 lock held by khungtaskd/1067:
#0: (tasklist_lock){.+.+}, at: [<ffffffff814777f4>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548
2 locks held by kworker/1:2/2762:
#0: ("events"){+.+.}, at: [<ffffffff813ba640>] process_one_work+0x6b0/0x14a0 kernel/workqueue.c:2087
#1: ((&m->wq)){+.+.}, at: [<ffffffff813ba676>] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2091
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 1067 Comm: khungtaskd Not tainted 4.14.198-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x283 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x13a/0x17f lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline]
watchdog+0x5b9/0xb40 kernel/hung_task.c:274
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3643 Comm: systemd-journal Not tainted 4.14.198-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff888094448100 task.stack: ffff888094450000
RIP: 0010:__rcu_read_lock+0x2e/0x40 kernel/rcu/update.c:237
RSP: 0018:ffff888094457a80 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff888094448100 RCX: 0000000000000000
RDX: 1ffff11012889090 RSI: ffffffff86e462c0 RDI: ffff888094448480
RBP: 00007f1602533840 R08: ffffffff8951e598 R09: ffffffff8951e599
R10: 000000000011e147 R11: 0000000000000001 R12: ffff888094457b80
R13: 0000000000000000 R14: ffff8880aa58ccc0 R15: 0000000000001000
FS: 00007f1602fa38c0(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f16003ca000 CR3: 0000000094eaa000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_read_lock include/linux/rcupdate.h:627 [inline]
is_bpf_text_address+0x10/0x150 kernel/bpf/core.c:456
kernel_text_address kernel/extable.c:150 [inline]
kernel_text_address+0xbd/0xf0 kernel/extable.c:120
__kernel_text_address+0x9/0x30 kernel/extable.c:105
unwind_get_return_address arch/x86/kernel/unwind_orc.c:252 [inline]
unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:247
__save_stack_trace+0xa0/0x160 arch/x86/kernel/stacktrace.c:45
save_stack mm/kasan/kasan.c:447 [inline]
set_track mm/kasan/kasan.c:459 [inline]
kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551
slab_post_alloc_hook mm/slab.h:442 [inline]
slab_alloc mm/slab.c:3390 [inline]
kmem_cache_alloc+0x111/0x3c0 mm/slab.c:3550
getname_flags+0xc8/0x550 fs/namei.c:138
do_sys_open+0x1ce/0x410 fs/open.c:1075
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f1602533840
RSP: 002b:00007ffe20d040d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007ffe20d043e0 RCX: 00007f1602533840
RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 00005620a3abd060
RBP: 000000000000000d R08: 00007f160251dbb8 R09: 00000000ffffffff
R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00005620a3ab1060 R14: 00007ffe20d043a0 R15: 00005620a3abe830
Code: 00 00 00 00 fc ff df 53 65 48 8b 1c 25 40 ee 01 00 48 8d bb 80 03 00 00 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 04 3c 03 7e 09 <83> 83 80 03 00 00 01 5b c3 e8 84 32 39 00 eb f0 66 90 b8 01 00