Bluetooth: hci0 command 0x0406 tx timeout
Bluetooth: hci4 command 0x0406 tx timeout
Bluetooth: hci5 command 0x0406 tx timeout
Bluetooth: hci1 command 0x0406 tx timeout
Bluetooth: hci2 command 0x0406 tx timeout
INFO: task syz-executor.1:12796 blocked for more than 140 seconds.
Not tainted 4.14.222-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1 D28336 12796 8008 0x80000004
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_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
lo_ioctl+0x87/0x1cd0 drivers/block/loop.c:1414
__blkdev_driver_ioctl block/ioctl.c:297 [inline]
blkdev_ioctl+0x540/0x1830 block/ioctl.c:594
ioctl_by_bdev+0xa0/0x110 fs/block_dev.c:2078
udf_get_last_block+0x8a/0x180 fs/udf/lowlevel.c:59
udf_load_vrs+0x48d/0xa90 fs/udf/super.c:1971
udf_fill_super+0x715/0x1680 fs/udf/super.c:2170
mount_bdev+0x2b3/0x360 fs/super.c:1134
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: 0033:0x465ef9
RSP: 002b:00007f88c3806188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465ef9
RDX: 0000000020000400 RSI: 00000000200001c0 RDI: 0000000020000240
RBP: 00000000004bcd1c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffeb6c81d8f R14: 00007f88c3806300 R15: 0000000000022000
INFO: task syz-executor.1:12805 blocked for more than 140 seconds.
Not tainted 4.14.222-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1 D28224 12805 8008 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
__rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline]
rwsem_down_read_failed+0x1e6/0x350 kernel/locking/rwsem-xadd.c:309
call_rwsem_down_read_failed+0x14/0x30 arch/x86/lib/rwsem.S:94
__down_read arch/x86/include/asm/rwsem.h:66 [inline]
down_read+0x44/0x80 kernel/locking/rwsem.c:26
__get_super.part.0+0x271/0x390 fs/super.c:678
__get_super include/linux/spinlock.h:317 [inline]
get_super+0x2b/0x50 fs/super.c:707
fsync_bdev+0x14/0xc0 fs/block_dev.c:495
invalidate_partition+0x74/0xb0 block/genhd.c:1509
drop_partitions.isra.0+0x83/0x150 block/partition-generic.c:442
rescan_partitions+0xa9/0x800 block/partition-generic.c:515
__blkdev_reread_part+0x140/0x1d0 block/ioctl.c:173
blkdev_reread_part+0x23/0x40 block/ioctl.c:193
loop_reread_partitions drivers/block/loop.c:624 [inline]
loop_set_status+0xeeb/0x12b0 drivers/block/loop.c:1193
loop_set_status64+0x92/0xe0 drivers/block/loop.c:1311
lo_ioctl+0x587/0x1cd0 drivers/block/loop.c:1441
__blkdev_driver_ioctl block/ioctl.c:297 [inline]
blkdev_ioctl+0x540/0x1830 block/ioctl.c:594
block_ioctl+0xd9/0x120 fs/block_dev.c:1893
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:500 [inline]
do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684
SYSC_ioctl fs/ioctl.c:701 [inline]
SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x465cb7
RSP: 002b:00007f88c37e4ef8 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f88c37e4f40 RCX: 0000000000465cb7
RDX: 00007f88c37e5050 RSI: 0000000000004c04 RDI: 0000000000000004
RBP: 00000000004bcd1c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00007f88c37e5050
R13: 00007ffeb6c81d8f R14: 00007f88c37e5300 R15: 0000000000022000
INFO: task systemd-udevd:12804 blocked for more than 140 seconds.
Not tainted 4.14.222-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
systemd-udevd D28712 12804 4625 0x00000104
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_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
__blkdev_get+0x191/0x1090 fs/block_dev.c:1455
blkdev_get+0x88/0x890 fs/block_dev.c:1611
blkdev_open+0x1cc/0x250 fs/block_dev.c:1772
do_dentry_open+0x44b/0xec0 fs/open.c:777
vfs_open+0x105/0x220 fs/open.c:888
do_last fs/namei.c:3428 [inline]
path_openat+0x628/0x2970 fs/namei.c:3569
do_filp_open+0x179/0x3c0 fs/namei.c:3603
do_sys_open+0x296/0x410 fs/open.c:1081
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f1e0b76a840
RSP: 002b:00007ffc7c0c6bc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 000055608e2639d0 RCX: 00007f1e0b76a840
RDX: 000055608c4f6fe3 RSI: 00000000000a0800 RDI: 000055608e263fa0
RBP: 00007ffc7c0c6d40 R08: 000055608c4f6670 R09: 0000000000000010
R10: 000055608c4f6d0c R11: 0000000000000246 R12: 00007ffc7c0c6c90
R13: 000055608e2648b0 R14: 0000000000000003 R15: 000000000000000e
Showing all locks held in the system:
1 lock held by khungtaskd/1531:
#0: (tasklist_lock){.+.+}, at: [<ffffffff86fef837>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548
2 locks held by agetty/7922:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff83535bf2>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff8352af73>] n_tty_read+0x1e3/0x1680 drivers/tty/n_tty.c:2156
2 locks held by syz-executor.1/12796:
#0: (&type->s_umount_key#73/1){+.+.}, at: [<ffffffff81870726>] alloc_super fs/super.c:251 [inline]
#0: (&type->s_umount_key#73/1){+.+.}, at: [<ffffffff81870726>] sget_userns+0x556/0xc10 fs/super.c:516
#1: (&lo->lo_ctl_mutex/1){+.+.}, at: [<ffffffff838c1dc7>] lo_ioctl+0x87/0x1cd0 drivers/block/loop.c:1414
3 locks held by syz-executor.1/12805:
#0: (&lo->lo_ctl_mutex/1){+.+.}, at: [<ffffffff838c1dc7>] lo_ioctl+0x87/0x1cd0 drivers/block/loop.c:1414
#1: (&bdev->bd_mutex){+.+.}, at: [<ffffffff830a199b>] blkdev_reread_part+0x1b/0x40 block/ioctl.c:192
#2: (&type->s_umount_key#74){.+.+}, at: [<ffffffff81871fc1>] __get_super.part.0+0x271/0x390 fs/super.c:678
1 lock held by systemd-udevd/12804:
#0: (&bdev->bd_mutex){+.+.}, at: [<ffffffff8193a4e1>] __blkdev_get+0x191/0x1090 fs/block_dev.c:1455
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1531 Comm: khungtaskd Not tainted 4.14.222-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+0x1b2/0x281 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x13a/0x180 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 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at pc 0xffffffff8720ef7e