INFO: task kworker/u5:8:3660 blocked for more than 143 seconds.
Not tainted 5.19.0-rc2-syzkaller-00050-g018ab4fabddd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u5:8 state:D stack:26616 pid: 3660 ppid: 2 flags:0x00004000
Workqueue: hci6 hci_power_on
Call Trace:
context_switch kernel/sched/core.c:5116 [inline]
__schedule+0x957/0xec0 kernel/sched/core.c:6428
schedule+0xeb/0x1b0 kernel/sched/core.c:6500
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6559
__mutex_lock_common+0xecf/0x26c0 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799
hci_dev_do_open net/bluetooth/hci_core.c:480 [inline]
hci_power_on+0x178/0x650 net/bluetooth/hci_core.c:963
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
INFO: task syz-executor.1:12251 blocked for more than 143 seconds.
Not tainted 5.19.0-rc2-syzkaller-00050-g018ab4fabddd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:27040 pid:12251 ppid: 3637 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5116 [inline]
__schedule+0x957/0xec0 kernel/sched/core.c:6428
schedule+0xeb/0x1b0 kernel/sched/core.c:6500
schedule_timeout+0xac/0x300 kernel/time/timer.c:1911
do_wait_for_common+0x3ea/0x560 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x46/0x60 kernel/sched/completion.c:138
__flush_work kernel/workqueue.c:3075 [inline]
__cancel_work_timer+0x585/0x740 kernel/workqueue.c:3162
hci_dev_close_sync+0x31/0xcc0 net/bluetooth/hci_sync.c:4091
hci_dev_do_close net/bluetooth/hci_core.c:553 [inline]
hci_unregister_dev+0x1b1/0x460 net/bluetooth/hci_core.c:2685
hci_uart_tty_close+0x1a7/0x280 drivers/bluetooth/hci_ldisc.c:548
tty_ldisc_kill drivers/tty/tty_ldisc.c:608 [inline]
tty_ldisc_release+0x23c/0x510 drivers/tty/tty_ldisc.c:776
tty_release_struct+0x27/0xd0 drivers/tty/tty_io.c:1694
tty_release+0xc06/0xe60 drivers/tty/tty_io.c:1865
__fput+0x3b9/0x820 fs/file_table.c:317
task_work_run+0x146/0x1c0 kernel/task_work.c:177
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0x134/0x160 kernel/entry/common.c:169
exit_to_user_mode_prepare+0xad/0x110 kernel/entry/common.c:201
__syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
syscall_exit_to_user_mode+0x2e/0x60 kernel/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7faf2763bd4b
RSP: 002b:00007ffe781853e0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007faf2763bd4b
RDX: 00007faf277a01c0 RSI: ffffffffffffffff RDI: 0000000000000003
RBP: 00007faf2779d960 R08: 0000000000000000 R09: 00007faf277a01c8
R10: 00007ffe781854e0 R11: 0000000000000293 R12: 000000000008ae65
R13: 00007ffe781854e0 R14: 00007faf2779bf60 R15: 0000000000000032
Showing all locks held in the system:
1 lock held by pr/ttyS0/16:
1 lock held by khungtaskd/29:
#0: ffffffff8cb1eca0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by klogd/2970:
2 locks held by getty/3296:
#0: ffff88802795a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc90002d162e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6e8/0x1e50 drivers/tty/n_tty.c:2124
3 locks held by kworker/u5:8/3660:
#0: ffff8880221b5938 ((wq_completion)hci6){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc900031dfd00 ((work_completion)(&hdev->power_on)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffff88802ef79048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_open net/bluetooth/hci_core.c:480 [inline]
#2: ffff88802ef79048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_power_on+0x178/0x650 net/bluetooth/hci_core.c:963
3 locks held by syz-executor.1/12251:
#0: ffff88802df78098 (&tty->ldisc_sem){++++}-{0:0}, at: __tty_ldisc_lock drivers/tty/tty_ldisc.c:290 [inline]
#0: ffff88802df78098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_lock_pair_timeout drivers/tty/tty_ldisc.c:346 [inline]
#0: ffff88802df78098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_lock_pair drivers/tty/tty_ldisc.c:367 [inline]
#0: ffff88802df78098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_release+0xb3/0x510 drivers/tty/tty_ldisc.c:775
#1: ffff8880318e6098 (&tty->ldisc_sem/1){+.+.}-{0:0}, at: __tty_ldisc_lock_nested drivers/tty/tty_ldisc.c:296 [inline]
#1: ffff8880318e6098 (&tty->ldisc_sem/1){+.+.}-{0:0}, at: tty_ldisc_lock_pair_timeout drivers/tty/tty_ldisc.c:348 [inline]
#1: ffff8880318e6098 (&tty->ldisc_sem/1){+.+.}-{0:0}, at: tty_ldisc_lock_pair drivers/tty/tty_ldisc.c:367 [inline]
#1: ffff8880318e6098 (&tty->ldisc_sem/1){+.+.}-{0:0}, at: tty_ldisc_release+0xd7/0x510 drivers/tty/tty_ldisc.c:775
#2: ffff88802ef79048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:551 [inline]
#2: ffff88802ef79048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x1a9/0x460 net/bluetooth/hci_core.c:2685
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 5.19.0-rc2-syzkaller-00050-g018ab4fabddd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x473/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x168/0x280 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xd18/0xd60 kernel/hung_task.c:378
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 47 Comm: kworker/u4:3 Not tainted 5.19.0-rc2-syzkaller-00050-g018ab4fabddd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4728 [inline]
RIP: 0010:__lock_acquire+0x5a8/0x1f80 kernel/locking/lockdep.c:5003
Code: 48 8d 04 5b 48 c1 e0 06 48 8d 98 00 df a3 8f 48 ba 00 00 00 00 00 fc ff df 48 81 c3 b9 00 00 00 48 89 d8 48 c1 e8 03 8a 04 10 <84> c0 0f 85 64 12 00 00 48 8b 44 24 50 49 8d 84 c7 60 0a 00 00 48
RSP: 0018:ffffc90000b876c8 EFLAGS: 00000802
RAX: 1ffffffff1f47b00 RBX: ffffffff8fa3dfb9 RCX: ffffffff8167dc53
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff8fd48000
RBP: 0000000000000001 R08: dffffc0000000000 R09: fffffbfff1fa9001
R10: fffffbfff1fa9001 R11: 1ffffffff1fa9000 R12: 0000000000000000
R13: ffff888016d3c5f8 R14: 00000000000c0002 R15: ffff888016d3bb00
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0173ce000 CR3: 000000007f293000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5665
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
debug_object_activate+0x97/0x6a0 lib/debugobjects.c:658
debug_timer_activate kernel/time/timer.c:782 [inline]
__mod_timer+0x817/0xd10 kernel/time/timer.c:1103
queue_delayed_work_on+0x142/0x250 kernel/workqueue.c:1701
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
----------------
Code disassembly (best guess):
0: 48 8d 04 5b lea (%rbx,%rbx,2),%rax
4: 48 c1 e0 06 shl $0x6,%rax
8: 48 8d 98 00 df a3 8f lea -0x705c2100(%rax),%rbx
f: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx
16: fc ff df
19: 48 81 c3 b9 00 00 00 add $0xb9,%rbx
20: 48 89 d8 mov %rbx,%rax
23: 48 c1 e8 03 shr $0x3,%rax
27: 8a 04 10 mov (%rax,%rdx,1),%al
* 2a: 84 c0 test %al,%al <-- trapping instruction
2c: 0f 85 64 12 00 00 jne 0x1296
32: 48 8b 44 24 50 mov 0x50(%rsp),%rax
37: 49 8d 84 c7 60 0a 00 lea 0xa60(%r15,%rax,8),%rax
3e: 00
3f: 48 rex.W