INFO: task kworker/u5:0:8786 blocked for more than 143 seconds.
Not tainted 5.19.0-rc3-syzkaller-00271-g6a0a17e6c6d1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u5:0 state:D stack:26976 pid: 8786 ppid: 2 flags:0x00004000
Workqueue: hci6 hci_power_on
Call Trace:
context_switch kernel/sched/core.c:5146 [inline]
__schedule+0x957/0xe20 kernel/sched/core.c:6458
schedule+0xeb/0x1b0 kernel/sched/core.c:6530
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6589
__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.3:11235 blocked for more than 143 seconds.
Not tainted 5.19.0-rc3-syzkaller-00271-g6a0a17e6c6d1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:26776 pid:11235 ppid: 3636 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5146 [inline]
__schedule+0x957/0xe20 kernel/sched/core.c:6458
schedule+0xeb/0x1b0 kernel/sched/core.c:6530
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_set_ldisc+0x22e/0x670 drivers/tty/tty_ldisc.c:552
tty_ioctl+0xada/0xc60 drivers/tty/tty_io.c:2714
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0xfb/0x170 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f4e33889109
RSP: 002b:00007f4e3493e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f4e3399bf60 RCX: 00007f4e33889109
RDX: 0000000020000100 RSI: 0000000000005423 RDI: 0000000000000004
RBP: 00007f4e338e305d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffedd6a39f R14: 00007f4e3493e300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8cb1e820 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by syslogd/2956:
#0: ffff8880b9b39b58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:544
1 lock held by klogd/2963:
#0: ffff8880b9b39b58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:544
2 locks held by getty/3289:
#0: ffff888027418098 (&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
2 locks held by kworker/u4:18/2389:
3 locks held by kworker/u5:0/8786:
#0: ffff888076280938 ((wq_completion)hci6){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc9000ab97d00 ((work_completion)(&hdev->power_on)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffff888044961048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_open net/bluetooth/hci_core.c:480 [inline]
#2: ffff888044961048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_power_on+0x178/0x650 net/bluetooth/hci_core.c:963
3 locks held by syz-executor.3/11235:
#0: ffff88801d4ea1c0 (&tty->legacy_mutex){+.+.}-{3:3}, at: tty_set_ldisc+0x4e/0x670 drivers/tty/tty_ldisc.c:529
#1: ffff88801d4ea098 (&tty->ldisc_sem){++++}-{0:0}, at: __tty_ldisc_lock drivers/tty/tty_ldisc.c:290 [inline]
#1: ffff88801d4ea098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_lock+0x6a/0xb0 drivers/tty/tty_ldisc.c:314
#2: ffff888044961048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:551 [inline]
#2: ffff888044961048 (&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: 27 Comm: khungtaskd Not tainted 5.19.0-rc3-syzkaller-00271-g6a0a17e6c6d1 #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:212 [inline]
watchdog+0xcf9/0xd40 kernel/hung_task.c:369
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: 2377 Comm: kworker/u4:6 Not tainted 5.19.0-rc3-syzkaller-00271-g6a0a17e6c6d1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__lock_release kernel/locking/lockdep.c:5349 [inline]
RIP: 0010:lock_release+0x22b/0x870 kernel/locking/lockdep.c:5685
Code: 89 da 85 c0 0f 84 df 01 00 00 4d 85 f6 0f 84 23 03 00 00 49 8d 5e 24 48 89 d8 48 c1 e8 03 42 8a 04 20 84 c0 0f 85 f9 04 00 00 <83> 3b 00 0f 85 06 04 00 00 4d 8d 6e 20 4c 89 eb 48 c1 eb 03 42 8a
RSP: 0018:ffffc9001518faa0 EFLAGS: 00000046
RAX: 1ffff1100fd8b800 RBX: ffff88807ec5c5d4 RCX: ffffc9001518fb03
RDX: 0000000000000002 RSI: ffffffff8cb1e820 RDI: ffff88807ec5c5b0
RBP: ffffc9001518fbc8 R08: dffffc0000000000 R09: fffffbfff1c0709e
R10: fffffbfff1c0709e R11: 1ffffffff1c0709d R12: dffffc0000000000
R13: 000000000000000a R14: ffff88807ec5c5b0 R15: 0000000000000002
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c01d8a6000 CR3: 000000000c88e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_read_unlock include/linux/rcupdate.h:728 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
batadv_nc_worker+0x251/0x5b0 net/batman-adv/network-coding.c:719
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: 89 da mov %ebx,%edx
2: 85 c0 test %eax,%eax
4: 0f 84 df 01 00 00 je 0x1e9
a: 4d 85 f6 test %r14,%r14
d: 0f 84 23 03 00 00 je 0x336
13: 49 8d 5e 24 lea 0x24(%r14),%rbx
17: 48 89 d8 mov %rbx,%rax
1a: 48 c1 e8 03 shr $0x3,%rax
1e: 42 8a 04 20 mov (%rax,%r12,1),%al
22: 84 c0 test %al,%al
24: 0f 85 f9 04 00 00 jne 0x523
* 2a: 83 3b 00 cmpl $0x0,(%rbx) <-- trapping instruction
2d: 0f 85 06 04 00 00 jne 0x439
33: 4d 8d 6e 20 lea 0x20(%r14),%r13
37: 4c 89 eb mov %r13,%rbx
3a: 48 c1 eb 03 shr $0x3,%rbx
3e: 42 rex.X
3f: 8a .byte 0x8a