INFO: task kworker/u5:1:14134 blocked for more than 143 seconds.
Not tainted 5.19.0-rc4-syzkaller-00208-g69cb6c6556ad #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u5:1 state:D stack:27560 pid:14134 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.4:18556 blocked for more than 143 seconds.
Not tainted 5.19.0-rc4-syzkaller-00208-g69cb6c6556ad #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:28760 pid:18556 ppid: 14596 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_set_ldisc+0x214/0x680 drivers/tty/tty_ldisc.c:552
tiocsetd drivers/tty/tty_io.c:2433 [inline]
tty_ioctl+0xae0/0x15e0 drivers/tty/tty_io.c:2714
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: 0033:0x7f9f9c489109
RSP: 002b:00007f9f9d6b6168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f9f9c59c030 RCX: 00007f9f9c489109
RDX: 0000000020000140 RSI: 0000000000005423 RDI: 0000000000000003
RBP: 00007f9f9c4e305d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffa239e03f R14: 00007f9f9d6b6300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff8bd83b60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6491
2 locks held by getty/3290:
#0: ffff88814aaca098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90001c382e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xe50/0x13c0 drivers/tty/n_tty.c:2124
3 locks held by kworker/u5:1/14134:
#0: ffff88801c0f6138 ((wq_completion)hci6){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff88801c0f6138 ((wq_completion)hci6){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff88801c0f6138 ((wq_completion)hci6){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff88801c0f6138 ((wq_completion)hci6){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff88801c0f6138 ((wq_completion)hci6){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff88801c0f6138 ((wq_completion)hci6){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
#1: ffffc9000455fda8 ((work_completion)(&hdev->power_on)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
#2: ffff88807d921048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_open+0x2a/0x70 net/bluetooth/hci_core.c:480
3 locks held by syz-executor.4/18556:
#0: ffff888076cb31c0 (&tty->legacy_mutex){+.+.}-{3:3}, at: tty_lock+0xbd/0x120 drivers/tty/tty_mutex.c:20
#1: ffff888076cb3098 (&tty->ldisc_sem){++++}-{0:0}, at: __tty_ldisc_lock drivers/tty/tty_ldisc.c:290 [inline]
#1: ffff888076cb3098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_lock+0x61/0xb0 drivers/tty/tty_ldisc.c:314
#2: ffff88807d921048 (&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: 28 Comm: khungtaskd Not tainted 5.19.0-rc4-syzkaller-00208-g69cb6c6556ad #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: 41 Comm: kworker/u4:2 Not tainted 5.19.0-rc4-syzkaller-00208-g69cb6c6556ad #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__lock_acquire+0x22e/0x5660 kernel/locking/lockdep.c:4987
Code: 81 e6 ff 1f 00 00 3b 74 24 10 75 0c 48 83 7c 24 20 00 0f 85 df 0c 00 00 4c 03 64 24 28 0f b7 4c 24 10 49 8d 44 24 20 48 89 c2 <48> 89 44 24 38 66 81 e1 ff 1f 48 b8 00 00 00 00 00 fc ff df 48 c1
RSP: 0018:ffffc90000d2f9b8 EFLAGS: 00000086
RAX: ffff888012984b50 RBX: ffff88807cd94318 RCX: 0000000000000745
RDX: ffff888012984b50 RSI: 0000000000000743 RDI: ffff888012984b28
RBP: 0000000000000000 R08: 1ffff11002530965 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: ffff888012984b30
R13: ffff888012984080 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f02bb86f990 CR3: 000000000ba8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:354 [inline]
batadv_nc_purge_paths+0xdf/0x3a0 net/batman-adv/network-coding.c:442
batadv_nc_worker+0x930/0xfa0 net/batman-adv/network-coding.c:722
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
----------------
Code disassembly (best guess):
0: 81 e6 ff 1f 00 00 and $0x1fff,%esi
6: 3b 74 24 10 cmp 0x10(%rsp),%esi
a: 75 0c jne 0x18
c: 48 83 7c 24 20 00 cmpq $0x0,0x20(%rsp)
12: 0f 85 df 0c 00 00 jne 0xcf7
18: 4c 03 64 24 28 add 0x28(%rsp),%r12
1d: 0f b7 4c 24 10 movzwl 0x10(%rsp),%ecx
22: 49 8d 44 24 20 lea 0x20(%r12),%rax
27: 48 89 c2 mov %rax,%rdx
* 2a: 48 89 44 24 38 mov %rax,0x38(%rsp) <-- trapping instruction
2f: 66 81 e1 ff 1f and $0x1fff,%cx
34: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
3b: fc ff df
3e: 48 rex.W
3f: c1 .byte 0xc1