INFO: task kworker/u5:6:3652 blocked for more than 143 seconds.
Not tainted 5.19.0-rc5-syzkaller-00056-ge35e5b6f695d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u5:6 state:D stack:27544 pid: 3652 ppid: 2 flags:0x00004000
Workqueue: hci6 hci_power_on
Call Trace:
context_switch kernel/sched/core.c:5146 [inline]
__schedule+0xa00/0x4b50 kernel/sched/core.c:6458
schedule+0xd2/0x1f0 kernel/sched/core.c:6530
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6589
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa70/0x1350 kernel/locking/mutex.c:747
hci_dev_do_open+0x2a/0x70 net/bluetooth/hci_core.c:480
hci_power_on+0x133/0x630 net/bluetooth/hci_core.c:963
process_one_work+0x996/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
INFO: task syz-executor.1:5208 blocked for more than 143 seconds.
Not tainted 5.19.0-rc5-syzkaller-00056-ge35e5b6f695d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:27824 pid: 5208 ppid: 3631 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5146 [inline]
__schedule+0xa00/0x4b50 kernel/sched/core.c:6458
schedule+0xd2/0x1f0 kernel/sched/core.c:6530
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1911
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x378/0x530 kernel/sched/completion.c:106
__flush_work+0x56c/0xb10 kernel/workqueue.c:3075
__cancel_work_timer+0x3f9/0x570 kernel/workqueue.c:3162
hci_dev_close_sync+0x8d/0x1150 net/bluetooth/hci_sync.c:4091
hci_dev_do_close+0x32/0x70 net/bluetooth/hci_core.c:553
hci_unregister_dev+0x1c4/0x550 net/bluetooth/hci_core.c:2685
hci_uart_tty_close+0x241/0x2a0 drivers/bluetooth/hci_ldisc.c:548
tty_ldisc_close+0x110/0x190 drivers/tty/tty_ldisc.c:456
tty_ldisc_kill+0x94/0x150 drivers/tty/tty_ldisc.c:608
tty_ldisc_hangup+0x30b/0x680 drivers/tty/tty_ldisc.c:724
__tty_hangup.part.0+0x40a/0x830 drivers/tty/tty_io.c:637
__tty_hangup drivers/tty/tty_io.c:592 [inline]
tty_vhangup drivers/tty/tty_io.c:707 [inline]
tty_ioctl+0xccd/0x15e0 drivers/tty/tty_io.c:2718
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7fdf87689109
RSP: 002b:00007fdf88892168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fdf8779bf60 RCX: 00007fdf87689109
RDX: 0000000000000000 RSI: 0000000000005437 RDI: 0000000000000003
RBP: 00007fdf876e305d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffce102bd2f R14: 00007fdf88892300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bd86660 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6491
2 locks held by getty/3286:
#0: ffff88814ada4098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002d162e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xe50/0x13c0 drivers/tty/n_tty.c:2124
3 locks held by kworker/u5:6/3652:
#0: ffff88801eec5138 ((wq_completion)hci6){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff88801eec5138 ((wq_completion)hci6){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff88801eec5138 ((wq_completion)hci6){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff88801eec5138 ((wq_completion)hci6){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff88801eec5138 ((wq_completion)hci6){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff88801eec5138 ((wq_completion)hci6){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
#1: ffffc90003fbfda8 ((work_completion)(&hdev->power_on)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
#2: ffff88807abd9048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_open+0x2a/0x70 net/bluetooth/hci_core.c:480
3 locks held by syz-executor.1/5208:
#0: ffff88806f6321c0 (&tty->legacy_mutex){+.+.}-{3:3}, at: tty_lock+0xbd/0x120 drivers/tty/tty_mutex.c:20
#1: ffff88806f632098 (&tty->ldisc_sem){++++}-{0:0}, at: __tty_ldisc_lock drivers/tty/tty_ldisc.c:290 [inline]
#1: ffff88806f632098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_lock+0x61/0xb0 drivers/tty/tty_ldisc.c:314
#2: ffff88807abd9048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0x2a/0x70 net/bluetooth/hci_core.c:551
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.19.0-rc5-syzkaller-00056-ge35e5b6f695d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:369
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 1245 Comm: kworker/u4:5 Not tainted 5.19.0-rc5-syzkaller-00056-ge35e5b6f695d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
Workqueue: 0x0 (bat_events)
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_preemption_disabled+0x1b/0x170 lib/smp_processor_id.c:16
Code: 0f 1f 44 00 00 0f 0b e9 23 ff ff ff cc cc cc 41 56 41 55 49 89 f5 41 54 55 48 89 fd 53 0f 1f 44 00 00 65 44 8b 25 e5 b6 8a 76 <65> 8b 1d 4e 0c 8b 76 81 e3 ff ff ff 7f 31 ff 89 de 0f 1f 44 00 00
RSP: 0018:ffffc900055df7b8 EFLAGS: 00000082
RAX: 0000000000000001 RBX: ffff8880202dbb80 RCX: ffffffff815640e2
RDX: dffffc0000000000 RSI: ffffffff8a285700 RDI: ffffffff8a285740
RBP: ffffffff8a285740 R08: 0000000000000000 R09: ffffffff8dbb93d7
R10: fffffbfff1b7727a R11: 0000000000000001 R12: 0000000000000001
R13: ffffffff8a285700 R14: ffff8880202dbbd0 R15: ffff8880202dbb00
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0000e5000 CR3: 000000000ba8e000 CR4: 0000000000350ee0
Call Trace:
rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:341 [inline]
rcu_is_watching+0xe/0xb0 kernel/rcu/tree.c:1138
rcu_read_lock_held_common kernel/rcu/update.c:108 [inline]
rcu_read_lock_sched_held+0x1c/0x70 kernel/rcu/update.c:123
trace_sched_stat_runtime include/trace/events/sched.h:520 [inline]
update_curr+0x6bb/0x840 kernel/sched/fair.c:920
enqueue_entity+0x299/0x1730 kernel/sched/fair.c:4337
enqueue_task_fair+0x1ba/0x1b60 kernel/sched/fair.c:5685
enqueue_task+0xad/0x3c0 kernel/sched/core.c:2072
activate_task+0x9/0x40 kernel/sched/core.c:2097
attach_task+0x118/0x1b0 kernel/sched/fair.c:8037
attach_tasks kernel/sched/fair.c:8072 [inline]
load_balance+0x16ef/0x2c40 kernel/sched/fair.c:9943
newidle_balance+0x6fb/0x1190 kernel/sched/fair.c:10939
pick_next_task_fair+0x96/0xe20 kernel/sched/fair.c:7356
__pick_next_task kernel/sched/core.c:5768 [inline]
pick_next_task kernel/sched/core.c:5843 [inline]
__schedule+0x3af/0x4b50 kernel/sched/core.c:6422
schedule+0xd2/0x1f0 kernel/sched/core.c:6530
worker_thread+0x15c/0x1080 kernel/workqueue.c:2457
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
----------------
Code disassembly (best guess):
0: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
5: 0f 0b ud2
7: e9 23 ff ff ff jmpq 0xffffff2f
c: cc int3
d: cc int3
e: cc int3
f: 41 56 push %r14
11: 41 55 push %r13
13: 49 89 f5 mov %rsi,%r13
16: 41 54 push %r12
18: 55 push %rbp
19: 48 89 fd mov %rdi,%rbp
1c: 53 push %rbx
1d: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
22: 65 44 8b 25 e5 b6 8a mov %gs:0x768ab6e5(%rip),%r12d # 0x768ab70f
29: 76
* 2a: 65 8b 1d 4e 0c 8b 76 mov %gs:0x768b0c4e(%rip),%ebx # 0x768b0c7f <-- trapping instruction
31: 81 e3 ff ff ff 7f and $0x7fffffff,%ebx
37: 31 ff xor %edi,%edi
39: 89 de mov %ebx,%esi
3b: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)