Bluetooth: hci0 command 0x0406 tx timeout
Bluetooth: hci1 command 0x0406 tx timeout
Bluetooth: hci2 command 0x0406 tx timeout
Bluetooth: hci4 command 0x0406 tx timeout
Bluetooth: hci5 command 0x0406 tx timeout
INFO: task syz-executor.2:8006 blocked for more than 140 seconds.
Not tainted 4.14.215-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2 D25848 8006 1 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_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_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: 0033:0x417d11
RSP: 002b:00007ffce2cdfe70 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007ffce2cdfee0 RCX: 0000000000417d11
RDX: 00007ffce2cdff2a RSI: 0000000000000002 RDI: 00007ffce2cdff20
RBP: 0000000000031ef8 R08: 0000000000000000 R09: 000000000000000a
R10: 0000000000000075 R11: 0000000000000293 R12: 00000000000000f7
R13: 0000000000000000 R14: 0000000000000032 R15: 0000000000031e97
INFO: task syz-executor.3:8010 blocked for more than 140 seconds.
Not tainted 4.14.215-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.3 D25704 8010 1 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_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_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: 0033:0x417d11
RSP: 002b:00007fff16e96ed0 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fff16e96f40 RCX: 0000000000417d11
RDX: 00007fff16e96f8a RSI: 0000000000000002 RDI: 00007fff16e96f80
RBP: 0000000000031f5b R08: 0000000000000000 R09: 000000000000000a
R10: 0000000000000075 R11: 0000000000000293 R12: 0000000000000140
R13: 0000000000000000 R14: 0000000000000032 R15: 0000000000031e98
INFO: task syz-executor.4:11616 blocked for more than 140 seconds.
Not tainted 4.14.215-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.4 D25848 11616 1 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_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_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: 0033:0x417d11
RSP: 002b:00007ffe10df2e30 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007ffe10df2ea0 RCX: 0000000000417d11
RDX: 00007ffe10df2eea RSI: 0000000000000002 RDI: 00007ffe10df2ee0
RBP: 0000000000031ed2 R08: 0000000000000000 R09: 000000000000000a
R10: 0000000000000075 R11: 0000000000000293 R12: 000000000000005c
R13: 0000000000000000 R14: 0000000000000032 R15: 0000000000031e9a
INFO: task syz-executor.0:12848 blocked for more than 140 seconds.
Not tainted 4.14.215-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0 D28336 12848 8005 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_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_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: 0033:0x45e087
RSP: 002b:00007fbc4effa9e8 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000200003c0 RCX: 000000000045e087
RDX: 00007fbc4effaab0 RSI: 0000000000004c04 RDI: 0000000000000005
RBP: 000000000119bfc0 R08: 00007fbc4effaa18 R09: 0000000000000000
R10: 00007fbc4effaa1c R11: 0000000000000202 R12: 000000000119bf8c
R13: 00007fff62f5e17f R14: 00007fbc4effb9c0 R15: 000000000119bf8c
INFO: task syz-executor.0:12862 blocked for more than 140 seconds.
Not tainted 4.14.215-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0 D29480 12862 8005 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_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: 0033:0x417d11
RSP: 002b:00007fbc4efb8980 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000417d11
RDX: 00007fbc4efb8ba0 RSI: 0000000000000002 RDI: 00007fbc4efb8ba0
RBP: 0000000000000000 R08: 00007fbc4efb8a18 R09: 0000000000000000
R10: 00007fbc4efb8a1c R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000004 R14: 0000000000000004 R15: 00000000200003d0
INFO: task syz-executor.5:12849 blocked for more than 140 seconds.
Not tainted 4.14.215-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.5 D28480 12849 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
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
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: 0033:0x45e219
RSP: 002b:00007fe93080dc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e219
RDX: 0000000000000000 RSI: 0000000000004c81 RDI: 0000000000000004
RBP: 000000000119bfc0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c
R13: 00007ffeab5f730f R14: 00007fe93080e9c0 R15: 000000000119bf8c
INFO: task syz-executor.5:12860 blocked for more than 140 seconds.
Not tainted 4.14.215-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.5 D28672 12860 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
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_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: 0033:0x417d11
RSP: 002b:00007fe9307eca10 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000417d11
RDX: 0000000000000014 RSI: 0000000000000002 RDI: 00007fe9307ecad0
RBP: 0000000000000000 R08: 00000000200016b8 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000293 R12: 0000000000000005
R13: 0000000000000004 R14: 0000000000000004 R15: 00000000200016c8
INFO: task syz-executor.1:12854 blocked for more than 140 seconds.
Not tainted 4.14.215-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1 D28536 12854 8007 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_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
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: 0033:0x45e219
RSP: 002b:00007f7d933b2c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e219
RDX: 0000000000000000 RSI: 0000000000004c81 RDI: 0000000000000004
RBP: 000000000119bfc0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c
R13: 00007ffede7b520f R14: 00007f7d933b39c0 R15: 000000000119bf8c
INFO: task syz-executor.1:12861 blocked for more than 140 seconds.
Not tainted 4.14.215-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1 D28544 12861 8007 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_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_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: 0033:0x417d11
RSP: 002b:00007f7d93391a10 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000417d11
RDX: 0000000000000014 RSI: 0000000000000002 RDI: 00007f7d93391ad0
RBP: 0000000000000000 R08: 00000000200016b8 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000293 R12: 0000000000000005
R13: 0000000000000004 R14: 0000000000000004 R15: 00000000200016c8
INFO: task systemd-udevd:12857 blocked for more than 140 seconds.
Not tainted 4.14.215-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
systemd-udevd D28912 12857 4627 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
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: 0033:0x7fe1299b5840
RSP: 002b:00007ffe6ae01348 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00005651f9fbe6a0 RCX: 00007fe1299b5840
RDX: 00005651f9cd8fe3 RSI: 00000000000a0800 RDI: 00005651f9fc0420
RBP: 00007ffe6ae014c0 R08: 00005651f9cd8670 R09: 0000000000000010
R10: 00005651f9cd8d0c R11: 0000000000000246 R12: 00007ffe6ae01410
R13: 00005651f9fbc610 R14: 0000000000000003 R15: 000000000000000e
Showing all locks held in the system:
1 lock held by khungtaskd/1531:
#0: (tasklist_lock){.+.+}, at: [<ffffffff81430fa4>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548
2 locks held by syz-executor.2/8006:
#0: (&bdev->bd_mutex){+.+.}, at: [<ffffffff81964a31>] __blkdev_get+0x191/0x1090 fs/block_dev.c:1455
#1: (loop_index_mutex){+.+.}, at: [<ffffffff8397bbd9>] lo_open+0x19/0xb0 drivers/block/loop.c:1634
2 locks held by syz-executor.3/8010:
#0: (&bdev->bd_mutex){+.+.}, at: [<ffffffff81964a31>] __blkdev_get+0x191/0x1090 fs/block_dev.c:1455
#1: (loop_index_mutex){+.+.}, at: [<ffffffff8397bbd9>] lo_open+0x19/0xb0 drivers/block/loop.c:1634
2 locks held by syz-executor.4/11616:
#0: (&bdev->bd_mutex){+.+.}, at: [<ffffffff81964a31>] __blkdev_get+0x191/0x1090 fs/block_dev.c:1455
#1: (loop_index_mutex){+.+.}, at: [<ffffffff8397bbd9>] lo_open+0x19/0xb0 drivers/block/loop.c:1634
2 locks held by syz-executor.0/12848:
#0: (&lo->lo_ctl_mutex/1){+.+.}, at: [<ffffffff83984d17>] lo_ioctl+0x87/0x1cd0 drivers/block/loop.c:1414
#1: (&bdev->bd_mutex){+.+.}, at: [<ffffffff83139f0b>] blkdev_reread_part+0x1b/0x40 block/ioctl.c:192
1 lock held by syz-executor.0/12862:
#0: (&bdev->bd_mutex){+.+.}, at: [<ffffffff81964a31>] __blkdev_get+0x191/0x1090 fs/block_dev.c:1455
2 locks held by syz-executor.5/12849:
#0: (loop_index_mutex){+.+.}, at: [<ffffffff83981dc7>] loop_control_ioctl+0x67/0x3f0 drivers/block/loop.c:1993
#1: (&lo->lo_ctl_mutex){+.+.}, at: [<ffffffff83981ee1>] loop_control_ioctl+0x181/0x3f0 drivers/block/loop.c:2007
2 locks held by syz-executor.5/12860:
#0: (&bdev->bd_mutex){+.+.}, at: [<ffffffff81964a31>] __blkdev_get+0x191/0x1090 fs/block_dev.c:1455
#1: (loop_index_mutex){+.+.}, at: [<ffffffff8397bbd9>] lo_open+0x19/0xb0 drivers/block/loop.c:1634
1 lock held by syz-executor.1/12854:
#0: (loop_index_mutex){+.+.}, at: [<ffffffff83981dc7>] loop_control_ioctl+0x67/0x3f0 drivers/block/loop.c:1993
2 locks held by syz-executor.1/12861:
#0: (&bdev->bd_mutex){+.+.}, at: [<ffffffff81964a31>] __blkdev_get+0x191/0x1090 fs/block_dev.c:1455
#1: (loop_index_mutex){+.+.}, at: [<ffffffff8397bbd9>] lo_open+0x19/0xb0 drivers/block/loop.c:1634
2 locks held by systemd-udevd/12857:
#0: (&bdev->bd_mutex){+.+.}, at: [<ffffffff81964a31>] __blkdev_get+0x191/0x1090 fs/block_dev.c:1455
#1: (loop_index_mutex){+.+.}, at: [<ffffffff8397bbd9>] lo_open+0x19/0xb0 drivers/block/loop.c:1634
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1531 Comm: khungtaskd Not tainted 4.14.215-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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5 Comm: kworker/u4:0 Not tainted 4.14.215-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_purge_orig
task: ffff8880b5ff2140 task.stack: ffff8880b5ff8000
RIP: 0010:validate_chain kernel/locking/lockdep.c:2434 [inline]
RIP: 0010:__lock_acquire+0x7f5/0x3f20 kernel/locking/lockdep.c:3491
RSP: 0018:ffff8880b5fffa78 EFLAGS: 00000046
RAX: 000000008da6dde1 RBX: 7ebdc5a2e9696f23 RCX: a738cf558da6dde1
RDX: 000000006f233648 RSI: 0000000062c38165 RDI: ffff8880b5ff2a39
RBP: 0000000000000000 R08: 0000000000000001 R09: 00000000000405f2
R10: ffff8880b5ff2a18 R11: ffff8880b5ff2140 R12: ffff8880b5ff2a30
R13: 0000000000000000 R14: a738cf558da6dde1 R15: ffffffff8beb5d40
FS: 0000000000000000(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe80bb2e000 CR3: 00000000a1f10000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
_raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:176
spin_lock_bh include/linux/spinlock.h:322 [inline]
_batadv_purge_orig+0x117/0xef0 net/batman-adv/originator.c:1309
batadv_purge_orig+0x17/0x60 net/batman-adv/originator.c:1338
process_one_work+0x793/0x14a0 kernel/workqueue.c:2116
worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Code: 8b bc 24 b8 01 00 00 be ff ff ff ff 4c 89 5c 24 28 4c 89 14 24 e8 dc b1 ff ff 4c 8b 14 24 85 c0 4c 8b 5c 24 28 0f 84 f6 06 00 00 <48> b8 00 00 00 00 00 fc ff df 48 8b 54 24 30 48 c1 ea 03 0f b6