INFO: task syz-executor.0:13699 blocked for more than 143 seconds.
Not tainted 6.8.0-rc2-next-20240202-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:26872 pid:13699 tgid:13670 ppid:5114 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17df/0x4a40 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6804 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6819
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2159
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common kernel/sched/completion.c:116 [inline]
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion+0x355/0x620 kernel/sched/completion.c:148
__flush_workqueue+0x730/0x1630 kernel/workqueue.c:3617
ceph_monc_stop+0x7c/0x1e0 net/ceph/mon_client.c:1248
ceph_destroy_client+0x74/0x130 net/ceph/ceph_common.c:768
destroy_fs_client+0x192/0x270 fs/ceph/super.c:899
deactivate_locked_super+0xc4/0x130 fs/super.c:477
ceph_get_tree+0x9a9/0x17b0 fs/ceph/super.c:1361
vfs_get_tree+0x90/0x2a0 fs/super.c:1784
vfs_cmd_create+0xe4/0x230 fs/fsopen.c:230
__do_sys_fsconfig fs/fsopen.c:476 [inline]
__se_sys_fsconfig+0x967/0xec0 fs/fsopen.c:349
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7ff929a7dda9
RSP: 002b:00007ff92a88f0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001af
RAX: ffffffffffffffda RBX: 00007ff929babf80 RCX: 00007ff929a7dda9
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000003
RBP: 00007ff929aca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007ff929babf80 R15: 00007ffcf1f979e8
Showing all locks held in the system:
2 locks held by kworker/u4:2/28:
1 lock held by khungtaskd/30:
#0: ffffffff8e130d60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8e130d60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8e130d60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by kworker/u4:6/1098:
#0: ffff8880b943c758 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
#1: ffffc90004f3fd20 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3024 [inline]
#1: ffffc90004f3fd20 (connector_reaper_work){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x14f0 kernel/workqueue.c:3125
2 locks held by udevd/4521:
#0: ffff8880b943c758 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
#1: ffff8880b9428988 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
2 locks held by getty/4827:
#0: ffff88802a34a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000312b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
2 locks held by kworker/u4:7/27050:
#0: ffff888014c89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3024 [inline]
#0: ffff888014c89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x14f0 kernel/workqueue.c:3125
#1: ffffc900122ffd20 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3024 [inline]
#1: ffffc900122ffd20 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x14f0 kernel/workqueue.c:3125
5 locks held by kworker/1:11/8977:
#0: ffff88801caebd48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3024 [inline]
#0: ffff88801caebd48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x14f0 kernel/workqueue.c:3125
#1: ffffc90005a77d20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3024 [inline]
#1: ffffc90005a77d20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x14f0 kernel/workqueue.c:3125
#2: ffff888023c65190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#2: ffff888023c65190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1fe/0x5150 drivers/usb/core/hub.c:5840
#3: ffff888023c70510 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3198 [inline]
#3: ffff888023c70510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5409 [inline]
#3: ffff888023c70510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5652 [inline]
#3: ffff888023c70510 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5812 [inline]
#3: ffff888023c70510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x25b6/0x5150 drivers/usb/core/hub.c:5894
#4: ffff8880236c7268 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5410 [inline]
#4: ffff8880236c7268 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5652 [inline]
#4: ffff8880236c7268 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5812 [inline]
#4: ffff8880236c7268 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x25f4/0x5150 drivers/usb/core/hub.c:5894
1 lock held by syz-executor.0/13699:
#0: ffff88809689e470 (&fc->uapi_mutex){+.+.}-{3:3}, at: __do_sys_fsconfig fs/fsopen.c:474 [inline]
#0: ffff88809689e470 (&fc->uapi_mutex){+.+.}-{3:3}, at: __se_sys_fsconfig+0x8e6/0xec0 fs/fsopen.c:349
1 lock held by syz-executor.0/21639:
3 locks held by syz-executor.3/21640:
2 locks held by syz-executor.3/21642:
#0: ffff8880b953c758 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
#1: ffff8880b9528988 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
1 lock held by modprobe/21647:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 30 Comm: khungtaskd Not tainted 6.8.0-rc2-next-20240202-syzkaller #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+0xfb0/0xff0 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 8977 Comm: kworker/1:11 Not tainted 6.8.0-rc2-next-20240202-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: usb_hub_wq hub_event
RIP: 0010:skip_atoi+0x0/0xd0 lib/vsprintf.c:165
Code: 0f 8c f8 d9 ff ff 4c 89 f7 e8 fc 20 90 f6 e9 eb d9 ff ff e8 32 25 06 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <55> 41 57 41 56 41 55 41 54 53 49 89 fe 49 bd 00 00 00 00 00 fc ff
RSP: 0018:ffffc90005a76b58 EFLAGS: 00000246
RAX: ffffffff8b6612f5 RBX: 00000000fffffffb RCX: 0000000000040000
RDX: ffffc900115e8000 RSI: 000000000003ffff RDI: ffffc90005a76be0
RBP: ffffc90005a76c50 R08: ffffffff8b660f32 R09: ffffffff8b660daa
R10: 0000000000000005 R11: ffff8880a0313c00 R12: ffffffff8bab7582
R13: ffffc90005a76be0 R14: dffffc0000000000 R15: 0000000000000035
FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f47594d56c6 CR3: 00000000a4d5c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
format_decode+0xb15/0x1bb0 lib/vsprintf.c:2592
vsnprintf+0x14f/0x1da0 lib/vsprintf.c:2776
sprintf+0xda/0x120 lib/vsprintf.c:3028
print_time kernel/printk/printk.c:1313 [inline]
info_print_prefix+0x16b/0x310 kernel/printk/printk.c:1339
record_print_text kernel/printk/printk.c:1388 [inline]
printk_get_next_message+0x408/0xce0 kernel/printk/printk.c:2817
console_emit_next_record kernel/printk/printk.c:2857 [inline]
console_flush_all+0x42d/0xec0 kernel/printk/printk.c:2956
console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3025
vprintk_emit+0x509/0x720 kernel/printk/printk.c:2292
dev_vprintk_emit+0x2ae/0x330 drivers/base/core.c:4850
dev_printk_emit+0xdd/0x120 drivers/base/core.c:4861
_dev_info+0x122/0x170 drivers/base/core.c:4919
hub_port_connect drivers/usb/core/hub.c:5551 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5652 [inline]
port_event drivers/usb/core/hub.c:5812 [inline]
hub_event+0x309a/0x5150 drivers/usb/core/hub.c:5894
process_one_work kernel/workqueue.c:3049 [inline]
process_scheduled_works+0x913/0x14f0 kernel/workqueue.c:3125
worker_thread+0xa60/0x1000 kernel/workqueue.c:3206
kthread+0x2f0/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:242