INFO: task kworker/u5:3:3645 blocked for more than 143 seconds.
Not tainted 5.19.0-rc2-syzkaller-00060-g30306f6194ca #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u5:3 state:D stack:26424 pid: 3645 ppid: 2 flags:0x00004000
Workqueue: hci7 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.1:5047 blocked for more than 143 seconds.
Not tainted 5.19.0-rc2-syzkaller-00060-g30306f6194ca #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:26776 pid: 5047 ppid: 3635 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_hangup+0x432/0x610 drivers/tty/tty_ldisc.c:724
__tty_hangup+0x494/0x6d0 drivers/tty/tty_io.c:637
tty_vhangup drivers/tty/tty_io.c:707 [inline]
tty_ioctl+0x606/0xc60 drivers/tty/tty_io.c:2718
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: 0033:0x7f36ab889109
RSP: 002b:00007f36aca1f168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f36ab99bf60 RCX: 00007f36ab889109
RDX: 0000000000000000 RSI: 0000000000005437 RDI: 0000000000000003
RBP: 00007f36ab8e305d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff9a864a4f R14: 00007f36aca1f300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8cb1eca0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3289:
#0: ffff88814ab9a098 (&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/u5:3/3645:
#0: ffff88807fd89938 ((wq_completion)hci7){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc900031ffd00 ((work_completion)(&hdev->power_on)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffff88801d8c1048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_open net/bluetooth/hci_core.c:480 [inline]
#2: ffff88801d8c1048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_power_on+0x178/0x650 net/bluetooth/hci_core.c:963
3 locks held by kworker/u4:12/4128:
5 locks held by kworker/u4:15/4224:
3 locks held by syz-executor.1/5047:
#0: ffff88807efa91c0 (&tty->legacy_mutex){+.+.}-{3:3}, at: __tty_hangup+0xc3/0x6d0 drivers/tty/tty_io.c:597
#1: ffff88807efa9098 (&tty->ldisc_sem){++++}-{0:0}, at: __tty_ldisc_lock drivers/tty/tty_ldisc.c:290 [inline]
#1: ffff88807efa9098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_lock+0x6a/0xb0 drivers/tty/tty_ldisc.c:314
#2: ffff88801d8c1048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:551 [inline]
#2: ffff88801d8c1048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x1a9/0x460 net/bluetooth/hci_core.c:2685
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 5.19.0-rc2-syzkaller-00060-g30306f6194ca #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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4128 Comm: kworker/u4:12 Not tainted 5.19.0-rc2-syzkaller-00060-g30306f6194ca #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: phy9 ieee80211_iface_work
RIP: 0010:__lock_acquire+0x18a/0x1f80 kernel/locking/lockdep.c:4962
Code: 29 c7 49 c1 ff 06 48 b9 ab aa aa aa aa aa aa aa 49 0f af cf 48 85 ed 44 89 64 24 3c 0f 84 27 01 00 00 83 fd 31 48 8b 5c 24 08 <0f> 83 6d 1b 00 00 49 89 ec 48 8d 44 ad 00 48 8d ac c3 58 0a 00 00
RSP: 0018:ffffc900058a7848 EFLAGS: 00000087
RAX: ffffffff8fa3df00 RBX: ffff888024725880 RCX: 00000000000007e4
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff88807f029bc8
RBP: 0000000000000003 R08: 0000000000000001 R09: 0000000000000000
R10: fffffbfff1c0709e R11: 1ffffffff1c0709d R12: 0000000000000000
R13: ffff88807f029bc8 R14: 0000000000000000 R15: 00000000000017ac
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055cafc847680 CR3: 0000000027e09000 CR4: 00000000003506f0
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_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:354 [inline]
ieee80211_ibss_work+0xe8/0x1510 net/mac80211/ibss.c:1691
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: 29 c7 sub %eax,%edi
2: 49 c1 ff 06 sar $0x6,%r15
6: 48 b9 ab aa aa aa aa movabs $0xaaaaaaaaaaaaaaab,%rcx
d: aa aa aa
10: 49 0f af cf imul %r15,%rcx
14: 48 85 ed test %rbp,%rbp
17: 44 89 64 24 3c mov %r12d,0x3c(%rsp)
1c: 0f 84 27 01 00 00 je 0x149
22: 83 fd 31 cmp $0x31,%ebp
25: 48 8b 5c 24 08 mov 0x8(%rsp),%rbx
* 2a: 0f 83 6d 1b 00 00 jae 0x1b9d <-- trapping instruction
30: 49 89 ec mov %rbp,%r12
33: 48 8d 44 ad 00 lea 0x0(%rbp,%rbp,4),%rax
38: 48 8d ac c3 58 0a 00 lea 0xa58(%rbx,%rax,8),%rbp
3f: 00