INFO: task syz-executor:4174 blocked for more than 143 seconds.
Not tainted 5.15.169-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:20504 pid: 4174 ppid: 1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5027 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6373
schedule+0x11b/0x1f0 kernel/sched/core.c:6456
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1914
gfs2_gl_hash_clear+0x1a1/0x310 fs/gfs2/glock.c:2183
gfs2_put_super+0x752/0x7c0 fs/gfs2/super.c:624
generic_shutdown_super+0x130/0x310 fs/super.c:475
kill_block_super+0x7a/0xe0 fs/super.c:1427
deactivate_locked_super+0xa0/0x110 fs/super.c:335
cleanup_mnt+0x44e/0x500 fs/namespace.c:1143
task_work_run+0x129/0x1a0 kernel/task_work.c:188
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:181
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
__syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7febcebf3a47
RSP: 002b:00007fffed138368 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007febcec651cc RCX: 00007febcebf3a47
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffed138420
RBP: 00007fffed138420 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fffed1394a0
R13: 00007febcec651cc R14: 0000000000028e32 R15: 00007fffed1394e0
Showing all locks held in the system:
6 locks held by kworker/0:0/7:
#0: ffff88801b991d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90000cc7d20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffff88814833a220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
#2: ffff88814833a220 (&dev->mutex){....}-{3:3}, at: hub_event+0x208/0x54c0 drivers/usb/core/hub.c:5769
#3: ffff88807d6c5220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
#3: ffff88807d6c5220 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xfa/0x8c0 drivers/usb/core/hub.c:2239
#4: ffff88807482e1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
#4: ffff88807482e1a8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1044 [inline]
#4: ffff88807482e1a8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xc2/0x7f0 drivers/base/dd.c:1259
#5: ffff88807783c188 (&hdw->big_lock_mutex){+.+.}-{3:3}, at: pvr2_hdw_disconnect+0x6a/0x510 drivers/media/usb/pvrusb2/pvrusb2-hdw.c:2710
1 lock held by khungtaskd/27:
#0: ffffffff8c91fc60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by kworker/u4:3/394:
#0: ffff8880b913a318 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:475
#1: ffff8880b9127848 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x4e1/0x810 kernel/sched/psi.c:882
2 locks held by pvrusb2-context/2420:
#0: ffff88807783c188 (&hdw->big_lock_mutex){+.+.}-{3:3}, at: pvr2_hdw_initialize+0xc6/0x3cc0 drivers/media/usb/pvrusb2/pvrusb2-hdw.c:2326
#1: ffffffff8c7d00d0 (umhelper_sem){++++}-{3:3}, at: usermodehelper_read_trylock+0x138/0x360 kernel/umh.c:217
2 locks held by getty/3928:
#0: ffff88802c531098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc900025c62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
4 locks held by udevd/4159:
#0: ffff888023ada790 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xae/0xd10 fs/seq_file.c:182
#1: ffff888063526488 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x50/0x3b0 fs/kernfs/file.c:112
#2: ffff88803ddae490 (kn->active#117){++++}-{0:0}, at: kernfs_seq_start+0x6f/0x3b0 fs/kernfs/file.c:113
#3: ffff88807d6c5220 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:765 [inline]
#3: ffff88807d6c5220 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x22/0x90 drivers/usb/core/sysfs.c:141
1 lock held by syz-executor/4174:
#0: ffff88801a5e20e0 (&type->s_umount_key#108){++++}-{3:3}, at: deactivate_super+0xa9/0xe0 fs/super.c:365
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.169-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xe72/0xeb0 kernel/hung_task.c:295
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4257 Comm: kworker/u4:6 Not tainted 5.15.169-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: bat_events batadv_tt_purge
RIP: 0010:__this_cpu_preempt_check+0x0/0x10 lib/smp_processor_id.c:65
Code: 4c 89 fe 4c 89 f2 e8 3f bf fe ff 48 8b 74 24 30 48 c7 c7 00 05 d9 8a e8 2e bf fe ff e8 99 69 ff ff eb a9 e8 22 eb ff ff 66 90 <48> 89 fe 48 c7 c7 80 04 d9 8a e9 e1 fe ff ff cc eb 1e 0f 1f 00 48
RSP: 0018:ffffc90003207af0 EFLAGS: 00000046
RAX: 0b26b7ee4266d856 RBX: ffff88802c715940 RCX: ffffffff81632d78
RDX: dffffc0000000000 RSI: ffffffff8a8b3d20 RDI: ffffffff8a8b2a80
RBP: ffffc90003207bc8 R08: dffffc0000000000 R09: fffffbfff20ec641
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff92000640f6c R14: ffffffff814d8aa4 R15: 0000000000000201
FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdf6f1b4c09 CR3: 000000001e801000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lockdep_hardirqs_on+0x94/0x130 kernel/locking/lockdep.c:4340
__local_bh_enable_ip+0x164/0x1f0 kernel/softirq.c:388
spin_unlock_bh include/linux/spinlock.h:408 [inline]
batadv_tt_global_purge net/batman-adv/translation-table.c:2299 [inline]
batadv_tt_purge+0x4dc/0xa40 net/batman-adv/translation-table.c:3561
process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287