INFO: task syz-executor.0:23305 blocked for more than 143 seconds.
Not tainted 6.8.0-rc4-syzkaller-00005-gc664e16bb1ba #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:24240 pid:23305 tgid:23302 ppid:5090 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x49a0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
device_lock include/linux/device.h:990 [inline]
usbdev_release+0x7a/0x7a0 drivers/usb/core/devio.c:1096
__fput+0x429/0x8a0 fs/file_table.c:376
task_work_run+0x24e/0x310 kernel/task_work.c:180
exit_task_work include/linux/task_work.h:38 [inline]
do_exit+0xa2c/0x2740 kernel/exit.c:871
do_group_exit+0x206/0x2c0 kernel/exit.c:1020
get_signal+0x176d/0x1850 kernel/signal.c:2893
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
syscall_exit_to_user_mode+0xc8/0x370 kernel/entry/common.c:212
do_syscall_64+0x108/0x240 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f125b87c9a0
RSP: 002b:00007f125c683c00 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: 0000000000000009 RBX: 0000000000101201 RCX: 00007f125b87c9a0
RDX: 0000000000101201 RSI: 00007f125c683ca0 RDI: 00000000ffffff9c
RBP: 00007f125c683ca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 000000000000000b R14: 00007f125b9ac050 R15: 00007ffce85f1d28
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8e130ae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8e130ae0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8e130ae0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by getty/4813:
#0: ffff88802b27b0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
5 locks held by kworker/1:15/7799:
#0: ffff88801ba8f538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#0: ffff88801ba8f538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#1: ffffc90004e1fd20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#1: ffffc90004e1fd20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#2: ffff888023f8f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#2: ffff888023f8f190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1fe/0x50f0 drivers/usb/core/hub.c:5811
#3: ffff88802408b510 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3169 [inline]
#3: ffff88802408b510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5380 [inline]
#3: ffff88802408b510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5623 [inline]
#3: ffff88802408b510 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5783 [inline]
#3: ffff88802408b510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x255f/0x50f0 drivers/usb/core/hub.c:5865
#4: ffff88802401b7d8 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5381 [inline]
#4: ffff88802401b7d8 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5623 [inline]
#4: ffff88802401b7d8 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5783 [inline]
#4: ffff88802401b7d8 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x259d/0x50f0 drivers/usb/core/hub.c:5865
1 lock held by syz-executor.0/23305:
#0: ffff888023f8f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#0: ffff888023f8f190 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x7a/0x7a0 drivers/usb/core/devio.c:1096
2 locks held by syz-executor.0/28312:
#0: ffff88802c426420 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff88803e52b750 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88803e52b750 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: chown_common+0x3e0/0x850 fs/open.c:778
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc4-syzkaller-00005-gc664e16bb1ba #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfaf/0xff0 kernel/hung_task.c:379
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 2791 Comm: kworker/u4:7 Not tainted 6.8.0-rc4-syzkaller-00005-gc664e16bb1ba #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: bat_events batadv_purge_orig
RIP: 0010:_raw_spin_unlock_irqrestore+0x1c/0x140 kernel/locking/spinlock.c:193
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 83 ec 60 49 89 f7 <48> 89 fb 65 48 8b 04 25 28 00 00 00 48 89 44 24 40 49 bc 00 00 00
RSP: 0018:ffffc90009c779c0 EFLAGS: 00000086
RAX: 0000000080000003 RBX: dffffc0000000000 RCX: 0000000000000004
RDX: 0000000000000000 RSI: 0000000000000046 RDI: ffff8880211189e0
RBP: ffffc90009c77a50 R08: ffff8880b943c903 R09: 1ffff11017287920
R10: dffffc0000000000 R11: ffffed1017287921 R12: 1ffff9200138ef58
R13: ffffc90009c77ae8 R14: ffff8880b943c900 R15: 0000000000000046
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6574579198 CR3: 00000000643ec000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
class_raw_spinlock_irqsave_destructor include/linux/spinlock.h:553 [inline]
try_to_wake_up+0x901/0x1470 kernel/sched/core.c:4253
kick_pool+0x2f4/0x3d0 kernel/workqueue.c:1148
process_one_work kernel/workqueue.c:2595 [inline]
process_scheduled_works+0x72d/0x1420 kernel/workqueue.c:2706
worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242