Bluetooth: hci4 command 0x0406 tx timeout
Bluetooth: hci0 command 0x0406 tx timeout
Bluetooth: hci5 command 0x0406 tx timeout
Bluetooth: hci1 command 0x0406 tx timeout
Bluetooth: hci2 command 0x0406 tx timeout
INFO: task systemd-udevd:4629 blocked for more than 140 seconds.
Not tainted 4.14.288-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
systemd-udevd D25856 4629 1 0x00000304
Call Trace:
context_switch kernel/sched/core.c:2811 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3387
schedule+0x8d/0x1b0 kernel/sched/core.c:3431
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3489
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
lo_open+0x19/0xb0 drivers/block/loop.c:1634
__blkdev_get+0x306/0x1090 fs/block_dev.c:1470
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: 0033:0x7f9c537de840
RSP: 002b:00007ffe80c8aa18 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007ffe80c8aab0 RCX: 00007f9c537de840
RDX: 00005650a5582fe3 RSI: 00000000000a0800 RDI: 00005650a5fa37b0
RBP: 00007ffe80c8b000 R08: 00005650a5582670 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe80c8abc0
R13: 00005650a5f89010 R14: 00005650a5f8e590 R15: 00007ffe80c8aa90
INFO: task syz-executor.4:8020 blocked for more than 140 seconds.
Not tainted 4.14.288-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.4 D25632 8020 1 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2811 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3387
schedule+0x8d/0x1b0 kernel/sched/core.c:3431
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3489
__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: 0033:0x7f854b046114
RSP: 002b:00007ffd8e52f930 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007ffd8e52fa30 RCX: 00007f854b046114
RDX: 0000000000000002 RSI: 00007ffd8e52fa70 RDI: 00000000ffffff9c
RBP: 00007ffd8e52fa70 R08: 0000000000000000 R09: 00007ffd8e52f840
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 000000000002d6d5 R14: 0000000000000014 R15: 00007ffd8e52fa70
INFO: task systemd-udevd:12450 blocked for more than 140 seconds.
Not tainted 4.14.288-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
systemd-udevd D28408 12450 4629 0x00000300
Call Trace:
context_switch kernel/sched/core.c:2811 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3387
schedule+0x8d/0x1b0 kernel/sched/core.c:3431
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3489
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
lo_open+0x19/0xb0 drivers/block/loop.c:1634
__blkdev_get+0xa8c/0x1090 fs/block_dev.c:1537
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: 0033:0x7f9c537de840
RSP: 002b:00007ffe80c8a358 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00005650a5f9e7c0 RCX: 00007f9c537de840
RDX: 00005650a5582fe3 RSI: 00000000000a0800 RDI: 00005650a5f9b930
RBP: 00007ffe80c8a4d0 R08: 00005650a5582670 R09: 0000000000000010
R10: 00005650a5582d0c R11: 0000000000000246 R12: 00007ffe80c8a420
R13: 00005650a5f98720 R14: 0000000000000003 R15: 000000000000000e
INFO: task syz-executor.0:12488 blocked for more than 140 seconds.
Not tainted 4.14.288-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0 D29248 12488 8017 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2811 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3387
schedule+0x8d/0x1b0 kernel/sched/core.c:3431
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3489
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
blkdev_reread_part+0x1b/0x40 block/ioctl.c:192
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: 0033:0x7fe071d61fb7
RSP: 002b:00007fe0706d6ed8 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fe0706d6f20 RCX: 00007fe071d61fb7
RDX: 00007fe0706d7030 RSI: 0000000000004c04 RDI: 0000000000000004
RBP: 00007fe071dbc161 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00007fe0706d7030
R13: 00007ffeb28ffb0f R14: 00007fe0706d7300 R15: 0000000000022000
INFO: task syz-executor.2:12481 blocked for more than 140 seconds.
Not tainted 4.14.288-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2 D27512 12481 8015 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2811 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3387
schedule+0x8d/0x1b0 kernel/sched/core.c:3431
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3489
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
loop_control_ioctl+0x67/0x3f0 drivers/block/loop.c:1993
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: 0033:0x7f04074c11f9
RSP: 002b:00007f0405e36168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f04075d3f60 RCX: 00007f04074c11f9
RDX: 0000000000000000 RSI: 0000000000004c81 RDI: 0000000000000005
RBP: 00007f040751b161 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd1c78e9ef R14: 00007f0405e36300 R15: 0000000000022000
INFO: task syz-executor.2:12492 blocked for more than 140 seconds.
Not tainted 4.14.288-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2 D29616 12492 8015 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2811 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3387
schedule+0x8d/0x1b0 kernel/sched/core.c:3431
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3489
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
loop_control_ioctl+0x67/0x3f0 drivers/block/loop.c:1993
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: 0033:0x7f04074c11f9
RSP: 002b:00007f0405e15168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f04075d4030 RCX: 00007f04074c11f9
RDX: 0000000000000000 RSI: 0000000000004c82 RDI: 0000000000000005
RBP: 00007f040751b161 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd1c78e9ef R14: 00007f0405e15300 R15: 0000000000022000
INFO: task systemd-udevd:12483 blocked for more than 140 seconds.
Not tainted 4.14.288-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
systemd-udevd D28712 12483 4629 0x00000300
Call Trace:
context_switch kernel/sched/core.c:2811 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3387
schedule+0x8d/0x1b0 kernel/sched/core.c:3431
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3489
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
lo_open+0x19/0xb0 drivers/block/loop.c:1634
__blkdev_get+0x306/0x1090 fs/block_dev.c:1470
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: 0033:0x7f9c537de840
RSP: 002b:00007ffe80c8a358 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00005650a5f9d2e0 RCX: 00007f9c537de840
RDX: 00005650a5582fe3 RSI: 00000000000a0800 RDI: 00005650a5f9e870
RBP: 00007ffe80c8a4d0 R08: 00005650a5582670 R09: 0000000000000010
R10: 00005650a5582d0c R11: 0000000000000246 R12: 00007ffe80c8a420
R13: 00005650a5f986e0 R14: 0000000000000003 R15: 000000000000000e
INFO: task syz-executor.3:12490 blocked for more than 140 seconds.
Not tainted 4.14.288-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.3 D28592 12490 8021 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2811 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3387
schedule+0x8d/0x1b0 kernel/sched/core.c:3431
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3489
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
loop_control_ioctl+0x181/0x3f0 drivers/block/loop.c:2007
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: 0033:0x7fab9d4fc1f9
RSP: 002b:00007fab9be71168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fab9d60ef60 RCX: 00007fab9d4fc1f9
RDX: 0000000000000000 RSI: 0000000000004c81 RDI: 0000000000000004
RBP: 00007fab9d556161 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffc1ccb62f R14: 00007fab9be71300 R15: 0000000000022000
INFO: task systemd-udevd:12486 blocked for more than 140 seconds.
Not tainted 4.14.288-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
systemd-udevd D28912 12486 4629 0x00000300
Call Trace:
context_switch kernel/sched/core.c:2811 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3387
schedule+0x8d/0x1b0 kernel/sched/core.c:3431
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3489
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
lo_open+0x19/0xb0 drivers/block/loop.c:1634
__blkdev_get+0xa8c/0x1090 fs/block_dev.c:1537
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: 0033:0x7f9c537de840
RSP: 002b:00007ffe80c85528 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00005650a5f89dc0 RCX: 00007f9c537de840
RDX: 00005650a5582fe3 RSI: 0000000000080000 RDI: 00005650a5f8d8f0
RBP: 0000000000000001 R08: 00005650a5582670 R09: 0000000000000110
R10: 00000000000002fe R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00005650a5f9b680 R15: 00000000ffffffff
INFO: task syz-executor.5:12498 blocked for more than 140 seconds.
Not tainted 4.14.288-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.5 D28592 12498 8019 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2811 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3387
schedule+0x8d/0x1b0 kernel/sched/core.c:3431
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3489
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
loop_control_ioctl+0x67/0x3f0 drivers/block/loop.c:1993
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: 0033:0x7fa97165c1f9
RSP: 002b:00007fa96ffd1168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fa97176ef60 RCX: 00007fa97165c1f9
RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000004
RBP: 00007fa9716b6161 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffee16abcff R14: 00007fa96ffd1300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/1533:
#0: (tasklist_lock){.+.+}, at: [<ffffffff8701dc79>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548
2 locks held by systemd-udevd/4629:
#0: (&bdev->bd_mutex){+.+.}, at: [<ffffffff81941f81>] __blkdev_get+0x191/0x1090 fs/block_dev.c:1455
#1: (loop_index_mutex){+.+.}, at: [<ffffffff838ccae9>] lo_open+0x19/0xb0 drivers/block/loop.c:1634
1 lock held by syz-executor.4/8020:
#0: (&bdev->bd_mutex){+.+.}, at: [<ffffffff81941f81>] __blkdev_get+0x191/0x1090 fs/block_dev.c:1455
2 locks held by systemd-udevd/12450:
#0: (&bdev->bd_mutex){+.+.}, at: [<ffffffff81941f81>] __blkdev_get+0x191/0x1090 fs/block_dev.c:1455
#1: (loop_index_mutex){+.+.}, at: [<ffffffff838ccae9>] lo_open+0x19/0xb0 drivers/block/loop.c:1634
2 locks held by syz-executor.0/12488:
#0: (&lo->lo_ctl_mutex/1){+.+.}, at: [<ffffffff838d6197>] lo_ioctl+0x87/0x1cd0 drivers/block/loop.c:1414
#1: (&bdev->bd_mutex){+.+.}, at: [<ffffffff830bd4db>] blkdev_reread_part+0x1b/0x40 block/ioctl.c:192
1 lock held by syz-executor.2/12481:
#0: (loop_index_mutex){+.+.}, at: [<ffffffff838d3247>] loop_control_ioctl+0x67/0x3f0 drivers/block/loop.c:1993
1 lock held by syz-executor.2/12492:
#0: (loop_index_mutex){+.+.}, at: [<ffffffff838d3247>] loop_control_ioctl+0x67/0x3f0 drivers/block/loop.c:1993
2 locks held by systemd-udevd/12483:
#0: (&bdev->bd_mutex){+.+.}, at: [<ffffffff81941f81>] __blkdev_get+0x191/0x1090 fs/block_dev.c:1455
#1: (loop_index_mutex){+.+.}, at: [<ffffffff838ccae9>] lo_open+0x19/0xb0 drivers/block/loop.c:1634
2 locks held by syz-executor.3/12490:
#0: (loop_index_mutex){+.+.}, at: [<ffffffff838d3247>] loop_control_ioctl+0x67/0x3f0 drivers/block/loop.c:1993
#1: (&lo->lo_ctl_mutex){+.+.}, at: [<ffffffff838d3361>] loop_control_ioctl+0x181/0x3f0 drivers/block/loop.c:2007
2 locks held by systemd-udevd/12486:
#0: (&bdev->bd_mutex){+.+.}, at: [<ffffffff81941f81>] __blkdev_get+0x191/0x1090 fs/block_dev.c:1455
#1: (loop_index_mutex){+.+.}, at: [<ffffffff838ccae9>] lo_open+0x19/0xb0 drivers/block/loop.c:1634
1 lock held by syz-executor.5/12498:
#0: (loop_index_mutex){+.+.}, at: [<ffffffff838d3247>] loop_control_ioctl+0x67/0x3f0 drivers/block/loop.c:1993
1 lock held by syz-executor.5/12499:
#0: (loop_index_mutex){+.+.}, at: [<ffffffff838d3247>] loop_control_ioctl+0x67/0x3f0 drivers/block/loop.c:1993
1 lock held by syz-executor.5/12500:
#0: (loop_index_mutex){+.+.}, at: [<ffffffff838d3247>] loop_control_ioctl+0x67/0x3f0 drivers/block/loop.c:1993
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1533 Comm: khungtaskd Not tainted 4.14.288-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
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
CPU: 0 PID: 9 Comm: rcu_preempt Not tainted 4.14.288-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
task: ffff8880b5420240 task.stack: ffff8880b5428000
RIP: 0010:arch_local_save_flags arch/x86/include/asm/paravirt.h:774 [inline]
RIP: 0010:trace_hardirqs_off_caller+0xf6/0x2b0 kernel/locking/lockdep.c:2957
RSP: 0018:ffff8880b542fcd8 EFLAGS: 00000086
RAX: 1ffffffff11e1340 RBX: ffff8880b5420240 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff8880b5420ac4
RBP: ffffffff8723ee96 R08: ffffffff8b9a8ac0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b5420240
R13: 1ffff11016a85fa4 R14: ffffffff88f7a7e0 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fab5ef0a000 CR3: 00000000a16c8000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]
_raw_spin_lock_irqsave+0x66/0xc0 kernel/locking/spinlock.c:160
prepare_to_swait+0x5c/0x2a0 kernel/sched/swait.c:81
prepare_to_swait_event+0x40/0xb0 kernel/sched/swait.c:93
rcu_gp_kthread+0xc1d/0x1e60 kernel/rcu/tree.c:2255
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Code: 85 c9 75 3d 48 c7 c0 00 9a f0 88 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 92 01 00 00 48 83 3d aa 8f af 07 00 <0f> 84 78 01 00 00 9c 58 0f 1f 44 00 00 f6 c4 02 0f 85 dc 00 00