INFO: task syz-executor.5:4631 blocked for more than 143 seconds.
Not tainted 6.1.0-rc6-syzkaller-00176-g08ad43d554ba #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:17160 pid:4631 ppid:1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5209 [inline]
__schedule+0x8c9/0xd70 kernel/sched/core.c:6521
schedule+0xcb/0x190 kernel/sched/core.c:6597
schedule_timeout+0x98/0x2f0 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+0x110/0x190 kernel/workqueue.c:3073
nilfs_segctor_destroy fs/nilfs2/segment.c:2730 [inline]
nilfs_detach_log_writer+0x4b1/0xbd0 fs/nilfs2/segment.c:2814
nilfs_put_super+0x4b/0x150 fs/nilfs2/super.c:468
generic_shutdown_super+0x130/0x310 fs/super.c:492
kill_block_super+0x79/0xd0 fs/super.c:1428
deactivate_locked_super+0xa7/0xf0 fs/super.c:332
cleanup_mnt+0x494/0x520 fs/namespace.c:1186
task_work_run+0x243/0x300 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0x124/0x150 kernel/entry/common.c:171
exit_to_user_mode_prepare+0xb2/0x140 kernel/entry/common.c:203
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x26/0x60 kernel/entry/common.c:296
do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f883288d547
RSP: 002b:00007ffef8feba08 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f883288d547
RDX: 00007ffef8febadb RSI: 000000000000000a RDI: 00007ffef8febad0
RBP: 00007ffef8febad0 R08: 00000000ffffffff R09: 00007ffef8feb8a0
R10: 000055555578e8b3 R11: 0000000000000246 R12: 00007f88328e6b24
R13: 00007ffef8fecb90 R14: 000055555578e810 R15: 00007ffef8fecbd0
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d127330 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d127b30 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8d127160 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3314:
#0: ffff88814a58a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.5/4631:
#0: ffff88803ddd80e0 (&type->s_umount_key#79){++++}-{3:3}, at: deactivate_super+0x96/0xd0 fs/super.c:362
3 locks held by kworker/0:19/20786:
#0: ffff888012864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc9000d5dfd00 ((work_completion)(&sci->sc_iput_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
#2: ffff88803ddd8650 (sb_internal#4){.+.+}-{0:0}, at: nilfs_evict_inode+0x13f/0x3d0 fs/nilfs2/inode.c:928
5 locks held by kworker/u4:3/23097:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc6-syzkaller-00176-g08ad43d554ba #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
nmi_cpu_backtrace+0x46f/0x4f0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1ba/0x420 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xcf5/0xd40 kernel/hung_task.c:377
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 23097 Comm: kworker/u4:3 Not tainted 6.1.0-rc6-syzkaller-00176-g08ad43d554ba #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: phy6 ieee80211_iface_work
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:137 [inline]
RIP: 0010:lock_is_held_type+0x119/0x180 kernel/locking/lockdep.c:5713
Code: c7 c7 20 c4 ed 8a e8 46 14 00 00 b8 ff ff ff ff 65 0f c1 05 51 51 70 75 83 f8 01 75 38 9c 8f 04 24 f7 04 24 00 02 00 00 75 46 <41> f7 c4 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 48 3b 44
RSP: 0018:ffffc900060df938 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 0000000000000004 RCX: 0000000080000002
RDX: 0000000000000000 RSI: ffffffff8aedc420 RDI: ffffffff8b4b3ae0
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1cebe16
R10: fffffbfff1cebe16 R11: 1ffffffff1cebe15 R12: 0000000000000046
R13: ffff888035c23a80 R14: 00000000ffffffff R15: ffffffff8d1270e0
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0007461d8 CR3: 000000000ce8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_is_held include/linux/lockdep.h:283 [inline]
rcu_read_lock_sched_held+0x87/0x110 kernel/rcu/update.c:125
trace_lock_release+0x95/0x220 include/trace/events/lock.h:69
lock_release+0x81/0x820 kernel/locking/lockdep.c:5679
__raw_spin_unlock include/linux/spinlock_api_smp.h:141 [inline]
_raw_spin_unlock+0x12/0x40 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:390 [inline]
kcov_remote_start+0x1a6/0x5e0 kernel/kcov.c:876
kcov_remote_start_common include/linux/kcov.h:48 [inline]
ieee80211_iface_work+0x21b/0xcf0 net/mac80211/iface.c:1679
process_one_work+0x877/0xdb0 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306