INFO: task syz-executor.3:6585 blocked for more than 143 seconds.
Tainted: G W 6.10.0-rc1-next-20240603-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:26392 pid:6585 tgid:6572 ppid:6014 flags:0x00000006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5192 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1af/0x200 kernel/locking/rwsem.c:1306
inode_lock include/linux/fs.h:795 [inline]
__ext4_ioctl fs/ext4/ioctl.c:1407 [inline]
ext4_ioctl+0x1c60/0x5580 fs/ext4/ioctl.c:1626
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa2ac67cee9
RSP: 002b:00007fa2ac17b0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fa2ac7b4480 RCX: 00007fa2ac67cee9
RDX: 0000000000000000 RSI: 0000000000006609 RDI: 0000000000000003
RBP: 00007fa2ac6c947f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fa2ac7b4480 R15: 00007ffc526b25c8
</TASK>
Showing all locks held in the system:
6 locks held by kworker/1:0/25:
BUG: using smp_processor_id() in preemptible [00000000] code: khungtaskd/30
caller is nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
CPU: 0 PID: 30 Comm: khungtaskd Tainted: G W 6.10.0-rc1-next-20240603-syzkaller #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:91 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:117
check_preemption_disabled+0x10e/0x120 lib/smp_processor_id.c:49
nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
nbcon_cpu_emergency_flush+0x11/0x190 kernel/printk/nbcon.c:1324
debug_show_all_locks+0x19c/0x2a0 kernel/locking/lockdep.c:6694
check_hung_uninterruptible_tasks kernel/hung_task.c:219 [inline]
watchdog+0xf9a/0x1020 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
1 lock held by khungtaskd/30:
#0: ffffffff8e334560 (rcu_read_lock){....}-{1:2}
, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6689
BUG: using smp_processor_id() in preemptible [00000000] code: khungtaskd/30
caller is nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
CPU: 0 PID: 30 Comm: khungtaskd Tainted: G W 6.10.0-rc1-next-20240603-syzkaller #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:91 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:117
check_preemption_disabled+0x10e/0x120 lib/smp_processor_id.c:49
nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
nbcon_cpu_emergency_flush+0x11/0x190 kernel/printk/nbcon.c:1324
debug_show_all_locks+0x19c/0x2a0 kernel/locking/lockdep.c:6694
check_hung_uninterruptible_tasks kernel/hung_task.c:219 [inline]
watchdog+0xf9a/0x1020 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
3 locks held by kworker/u8:3/37:
#0: ffff88802a618948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline]
#0: ffff88802a618948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329
#1:
ffffc90000ad7d00
(
(work_completion)(&(&net->ipv6.addr_chk_work)->work)
){+.+.}-{0:0}
, at: process_one_work kernel/workqueue.c:3224 [inline]
, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329
#2: ffffffff8f5ed588
(
rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4733
BUG: using smp_processor_id() in preemptible [00000000] code: khungtaskd/30
caller is nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
CPU: 0 PID: 30 Comm: khungtaskd Tainted: G W 6.10.0-rc1-next-20240603-syzkaller #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:91 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:117
check_preemption_disabled+0x10e/0x120 lib/smp_processor_id.c:49
nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
nbcon_cpu_emergency_flush+0x11/0x190 kernel/printk/nbcon.c:1324
debug_show_all_locks+0x19c/0x2a0 kernel/locking/lockdep.c:6694
check_hung_uninterruptible_tasks kernel/hung_task.c:219 [inline]
watchdog+0xf9a/0x1020 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
2 locks held by kworker/1:1/46:
BUG: using smp_processor_id() in preemptible [00000000] code: khungtaskd/30
caller is nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
CPU: 0 PID: 30 Comm: khungtaskd Tainted: G W 6.10.0-rc1-next-20240603-syzkaller #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:91 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:117
check_preemption_disabled+0x10e/0x120 lib/smp_processor_id.c:49
nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
nbcon_cpu_emergency_flush+0x11/0x190 kernel/printk/nbcon.c:1324
debug_show_all_locks+0x19c/0x2a0 kernel/locking/lockdep.c:6694
check_hung_uninterruptible_tasks kernel/hung_task.c:219 [inline]
watchdog+0xf9a/0x1020 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
9 locks held by kworker/1:1H/57:
BUG: using smp_processor_id() in preemptible [00000000] code: khungtaskd/30
caller is nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
CPU: 0 PID: 30 Comm: khungtaskd Tainted: G W 6.10.0-rc1-next-20240603-syzkaller #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:91 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:117
check_preemption_disabled+0x10e/0x120 lib/smp_processor_id.c:49
nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
nbcon_cpu_emergency_flush+0x11/0x190 kernel/printk/nbcon.c:1324
debug_show_all_locks+0x19c/0x2a0 kernel/locking/lockdep.c:6694
check_hung_uninterruptible_tasks kernel/hung_task.c:219 [inline]
watchdog+0xf9a/0x1020 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
3 locks held by kworker/1:2/58:
BUG: using smp_processor_id() in preemptible [00000000] code: khungtaskd/30
caller is nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
CPU: 0 PID: 30 Comm: khungtaskd Tainted: G W 6.10.0-rc1-next-20240603-syzkaller #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:91 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:117
check_preemption_disabled+0x10e/0x120 lib/smp_processor_id.c:49
nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
nbcon_cpu_emergency_flush+0x11/0x190 kernel/printk/nbcon.c:1324
debug_show_all_locks+0x19c/0x2a0 kernel/locking/lockdep.c:6694
check_hung_uninterruptible_tasks kernel/hung_task.c:219 [inline]
watchdog+0xf9a/0x1020 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
3 locks held by kworker/0:3/934:
#0:
ffff888015080948
((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline]
((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329
#1:
ffffc90003e77d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline]
ffffc90003e77d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329
#2: ffffffff8f5ed588 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
BUG: using smp_processor_id() in preemptible [00000000] code: khungtaskd/30
caller is nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
CPU: 0 PID: 30 Comm: khungtaskd Tainted: G W 6.10.0-rc1-next-20240603-syzkaller #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:91 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:117
check_preemption_disabled+0x10e/0x120 lib/smp_processor_id.c:49
nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
nbcon_cpu_emergency_flush+0x11/0x190 kernel/printk/nbcon.c:1324
debug_show_all_locks+0x19c/0x2a0 kernel/locking/lockdep.c:6694
check_hung_uninterruptible_tasks kernel/hung_task.c:219 [inline]
watchdog+0xf9a/0x1020 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
5 locks held by kworker/u8:8/2814:
#0: ffff8880b943e7d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:560
#1:
ffff8880b9428948
(
&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
#2:
ffff8880b942a718
(&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x112/0x240 kernel/time/timer.c:1051
#3: ffff8880b943e7d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:560
#4:
ffff8880b94427d0
(
&c->lock){-.-.}-{2:2}, at: local_lock_acquire include/linux/local_lock_internal.h:29 [inline]
&c->lock){-.-.}-{2:2}, at: put_cpu_partial+0x70/0x250 mm/slub.c:3042
BUG: using smp_processor_id() in preemptible [00000000] code: khungtaskd/30
caller is nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
CPU: 0 PID: 30 Comm: khungtaskd Tainted: G W 6.10.0-rc1-next-20240603-syzkaller #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:91 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:117
check_preemption_disabled+0x10e/0x120 lib/smp_processor_id.c:49
nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
nbcon_cpu_emergency_flush+0x11/0x190 kernel/printk/nbcon.c:1324
debug_show_all_locks+0x19c/0x2a0 kernel/locking/lockdep.c:6694
check_hung_uninterruptible_tasks kernel/hung_task.c:219 [inline]
watchdog+0xf9a/0x1020 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
2 locks held by getty/4852:
#0:
ffff88802abcd0a0
(
&tty->ldisc_sem
){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1:
ffffc900031432f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
BUG: using smp_processor_id() in preemptible [00000000] code: khungtaskd/30
caller is nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
CPU: 0 PID: 30 Comm: khungtaskd Tainted: G W 6.10.0-rc1-next-20240603-syzkaller #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:91 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:117
check_preemption_disabled+0x10e/0x120 lib/smp_processor_id.c:49
nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
nbcon_cpu_emergency_flush+0x11/0x190 kernel/printk/nbcon.c:1324
debug_show_all_locks+0x19c/0x2a0 kernel/locking/lockdep.c:6694
check_hung_uninterruptible_tasks kernel/hung_task.c:219 [inline]
watchdog+0xf9a/0x1020 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
3 locks held by syz-fuzzer/5106:
#0:
ffff88802f120420
(
sb_writers
#4
){.+.+}-{0:0}
, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1:
ffff888058d80df0
(
&type->i_mutex_dir_key
#3
/1
){+.+.}-{3:3}
, at: inode_lock_nested include/linux/fs.h:830 [inline]
, at: do_unlinkat+0x26a/0x830 fs/namei.c:4398
#2:
ffff888058d867a8 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline]
ffff888058d867a8 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: vfs_unlink+0xe4/0x650 fs/namei.c:4336
BUG: using smp_processor_id() in preemptible [00000000] code: khungtaskd/30
caller is nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
CPU: 0 PID: 30 Comm: khungtaskd Tainted: G W 6.10.0-rc1-next-20240603-syzkaller #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:91 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:117
check_preemption_disabled+0x10e/0x120 lib/smp_processor_id.c:49
nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
nbcon_cpu_emergency_flush+0x11/0x190 kernel/printk/nbcon.c:1324
debug_show_all_locks+0x19c/0x2a0 kernel/locking/lockdep.c:6694
check_hung_uninterruptible_tasks kernel/hung_task.c:219 [inline]
watchdog+0xf9a/0x1020 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
1 lock held by udevd/5109:
#0:
ffffffff8e8a69a8
(uuid_mutex
){+.+.}-{3:3}
, at: btrfs_control_ioctl+0x150/0x3e0 fs/btrfs/super.c:2233
BUG: using smp_processor_id() in preemptible [00000000] code: khungtaskd/30
caller is nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
CPU: 0 PID: 30 Comm: khungtaskd Tainted: G W 6.10.0-rc1-next-20240603-syzkaller #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:91 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:117
check_preemption_disabled+0x10e/0x120 lib/smp_processor_id.c:49
nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
nbcon_cpu_emergency_flush+0x11/0x190 kernel/printk/nbcon.c:1324
debug_show_all_locks+0x19c/0x2a0 kernel/locking/lockdep.c:6694
check_hung_uninterruptible_tasks kernel/hung_task.c:219 [inline]
watchdog+0xf9a/0x1020 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
1 lock held by udevd/5110:
#0:
ffffffff8e8a69a8
(
uuid_mutex
){+.+.}-{3:3}
, at: btrfs_control_ioctl+0x150/0x3e0 fs/btrfs/super.c:2233
BUG: using smp_processor_id() in preemptible [00000000] code: khungtaskd/30
caller is nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
CPU: 0 PID: 30 Comm: khungtaskd Tainted: G W 6.10.0-rc1-next-20240603-syzkaller #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:91 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:117
check_preemption_disabled+0x10e/0x120 lib/smp_processor_id.c:49
nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
nbcon_cpu_emergency_flush+0x11/0x190 kernel/printk/nbcon.c:1324
debug_show_all_locks+0x19c/0x2a0 kernel/locking/lockdep.c:6694
check_hung_uninterruptible_tasks kernel/hung_task.c:219 [inline]
watchdog+0xf9a/0x1020 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
3 locks held by kworker/u9:5/5126:
#0:
ffff88805ecbb148
(
(wq_completion)hci6
){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline]
){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329
#1: ffffc900041e7d00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline]
#1: ffffc900041e7d00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329
#2:
ffff8880286e0d88
(&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x1ec/0x400 net/bluetooth/hci_sync.c:309
BUG: using smp_processor_id() in preemptible [00000000] code: khungtaskd/30
caller is nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
CPU: 0 PID: 30 Comm: khungtaskd Tainted: G W 6.10.0-rc1-next-20240603-syzkaller #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:91 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:117
check_preemption_disabled+0x10e/0x120 lib/smp_processor_id.c:49
nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
nbcon_cpu_emergency_flush+0x11/0x190 kernel/printk/nbcon.c:1324
debug_show_all_locks+0x19c/0x2a0 kernel/locking/lockdep.c:6694
check_hung_uninterruptible_tasks kernel/hung_task.c:219 [inline]
watchdog+0xf9a/0x1020 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
5 locks held by kworker/u9:6/5129:
#0:
ffff888066f39948
((wq_completion)hci5){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline]
((wq_completion)hci5){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329
#1:
ffffc90004207d00
(
(work_completion)(&hdev->cmd_sync_work)
){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline]
){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329
#2:
ffff888023fa4d88
(
&hdev->req_lock
){+.+.}-{3:3}
, at: hci_cmd_sync_work+0x1ec/0x400 net/bluetooth/hci_sync.c:309
#3: ffff888023fa4078 (&hdev->lock){+.+.}-{3:3}, at: hci_abort_conn_sync+0x1ea/0xde0 net/bluetooth/hci_sync.c:5431
#4: ffffffff8f757c88 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1967 [inline]
#4: ffffffff8f757c88 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_failed+0x185/0x340 net/bluetooth/hci_conn.c:1257
BUG: using smp_processor_id() in preemptible [00000000] code: khungtaskd/30
caller is nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
CPU: 0 PID: 30 Comm: khungtaskd Tainted: G W 6.10.0-rc1-next-20240603-syzkaller #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:91 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:117
check_preemption_disabled+0x10e/0x120 lib/smp_processor_id.c:49
nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
nbcon_cpu_emergency_flush+0x11/0x190 kernel/printk/nbcon.c:1324
debug_show_all_locks+0x19c/0x2a0 kernel/locking/lockdep.c:6694
check_hung_uninterruptible_tasks kernel/hung_task.c:219 [inline]
watchdog+0xf9a/0x1020 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
4 locks held by udevd/5135:
#0: ffff888028e1de80 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xb7/0xd60 fs/seq_file.c:182
#1: ffff888022925488 (&of->mutex#2){+.+.}-{3:3}, at: kernfs_seq_start+0x53/0x3b0 fs/kernfs/file.c:154
#2:
ffff8880690b3008 (kn->active#18){.+.+}-{0:0}, at: kernfs_seq_start+0x72/0x3b0 fs/kernfs/file.c:155
#3:
ffff888068b47190
(&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:1014 [inline]
(&dev->mutex){....}-{3:3}, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
BUG: using smp_processor_id() in preemptible [00000000] code: khungtaskd/30
caller is nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
CPU: 0 PID: 30 Comm: khungtaskd Tainted: G W 6.10.0-rc1-next-20240603-syzkaller #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:91 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:117
check_preemption_disabled+0x10e/0x120 lib/smp_processor_id.c:49
nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
nbcon_cpu_emergency_flush+0x11/0x190 kernel/printk/nbcon.c:1324
debug_show_all_locks+0x19c/0x2a0 kernel/locking/lockdep.c:6694
check_hung_uninterruptible_tasks kernel/hung_task.c:219 [inline]
watchdog+0xf9a/0x1020 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
2 locks held by kworker/1:4/5167:
BUG: using smp_processor_id() in preemptible [00000000] code: khungtaskd/30
caller is nbcon_get_cpu_emergency_nesting+0x15/0x90 kernel/printk/nbcon.c:959
CPU: 0 PID: 30 Comm: khungtaskd Tainted: G W 6.10.0-rc1-next-20240603-syzkaller #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:91 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:117