INFO: task syz-executor.5:5068 blocked for more than 143 seconds.
Not tainted 6.6.0-rc7-syzkaller-00151-g56567a20b22b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:20680 pid:5068 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
schedule+0xc3/0x180 kernel/sched/core.c:6771
schedule_timeout+0xb0/0x300 kernel/time/timer.c:2143
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+0x354/0x620 kernel/sched/completion.c:148
__flush_work+0x950/0xac0 kernel/workqueue.c:3407
nilfs_segctor_destroy fs/nilfs2/segment.c:2766 [inline]
nilfs_detach_log_writer+0x47d/0xbe0 fs/nilfs2/segment.c:2850
nilfs_put_super+0x4d/0x160 fs/nilfs2/super.c:499
generic_shutdown_super+0x13a/0x2c0 fs/super.c:693
kill_block_super+0x41/0x70 fs/super.c:1646
deactivate_locked_super+0xa4/0x110 fs/super.c:481
cleanup_mnt+0x426/0x4c0 fs/namespace.c:1254
task_work_run+0x24a/0x300 kernel/task_work.c:180
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:171
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1cace7de17
RSP: 002b:00007ffc02ab4358 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f1cace7de17
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffc02ab4410
RBP: 00007ffc02ab4410 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc02ab54d0
R13: 00007f1cacec73b9 R14: 000000000029a5a4 R15: 0000000000000009
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8d32c460 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
#0: ffffffff8d32c460 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:749 [inline]
#0: ffffffff8d32c460 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6613
1 lock held by klogd/4468:
2 locks held by getty/4783:
#0: ffff8880265bd0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b1/0x1dc0 drivers/tty/n_tty.c:2206
1 lock held by syz-executor.5/5068:
#0: ffff88807d0380e0 (&type->s_umount_key#54){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88807d0380e0 (&type->s_umount_key#54){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88807d0380e0 (&type->s_umount_key#54){++++}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:513
3 locks held by kworker/u4:10/7471:
#0: ffff8880b993c318 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
#1: ffff8880b9928808 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:999
#2: ffff8880b99296d8 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x120/0x260 kernel/time/timer.c:999
5 locks held by kworker/u4:4/8823:
#0: ffff8880b993c318 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
#1: ffff8880b9928808 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:999
#2: ffff8880213f0768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:5775 [inline]
#2: ffff8880213f0768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: cfg80211_wiphy_work+0x35/0x250 net/wireless/core.c:422
#3: ffff88805853cd40 (&wdev->mtx){+.+.}-{3:3}, at: sdata_lock net/mac80211/ieee80211_i.h:1135 [inline]
#3: ffff88805853cd40 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0xa4/0x14a0 net/mac80211/ibss.c:1684
#4: ffffffff8d32c460 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
#4: ffffffff8d32c460 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:749 [inline]
#4: ffffffff8d32c460 (rcu_read_lock){....}-{1:2}, at: ieee80211_sta_active_ibss+0xb1/0x310 net/mac80211/ibss.c:657
3 locks held by kworker/1:3/16543:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1400 kernel/workqueue.c:2703
#1: ffffc90014bbfd20 ((work_completion)(&sci->sc_iput_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
#1: ffffc90014bbfd20 ((work_completion)(&sci->sc_iput_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1400 kernel/workqueue.c:2703
#2: ffff88807d038600 (sb_internal#3){.+.+}-{0:0}, at: nilfs_evict_inode+0x167/0x500 fs/nilfs2/inode.c:929
4 locks held by kworker/u4:5/19416:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 30 Comm: khungtaskd Not tainted 6.6.0-rc7-syzkaller-00151-g56567a20b22b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x310 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+0xfa9/0xff0 kernel/hung_task.c:379
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 8823 Comm: kworker/u4:4 Not tainted 6.6.0-rc7-syzkaller-00151-g56567a20b22b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:__lock_acquire+0x1004/0x7f70
Code: c1 89 d6 c1 c6 08 29 d0 31 c6 01 ca 29 f1 41 89 f6 41 c1 c6 10 41 31 ce 01 d6 44 89 f3 c1 c3 13 44 29 f2 31 d3 41 01 f6 29 de <41> 89 dc 41 c1 c4 04 41 31 f4 48 c7 c0 10 a1 99 8e 48 c1 e8 03 42
RSP: 0018:ffffc90013d4f5e0 EFLAGS: 00000097
RAX: 00000000a69ce975 RBX: 00000000b0d79de6 RCX: 00000000519ff6b7
RDX: 00000000f6843468 RSI: 00000000f95b83fa RDI: ffffffff906e43e8
RBP: ffffc90013d4f8a8 R08: dffffc0000000000 R09: 1ffffffff20dc87d
R10: dffffc0000000000 R11: fffffbfff20dc87e R12: 000000002dfe713e
R13: 0000000000000000 R14: 000000001f64eaaa R15: 00000000a24ce90e
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000564f5cd6d300 CR3: 000000000d130000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5753
__mutex_lock_common kernel/locking/mutex.c:603 [inline]
__mutex_lock+0x136/0xd60 kernel/locking/mutex.c:747
wiphy_lock include/net/cfg80211.h:5775 [inline]
cfg80211_wiphy_work+0x35/0x250 net/wireless/core.c:422
process_one_work kernel/workqueue.c:2630 [inline]
process_scheduled_works+0x90f/0x1400 kernel/workqueue.c:2703
worker_thread+0xa5f/0xff0 kernel/workqueue.c:2784
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304