INFO: task syz-executor.5:5097 blocked for more than 143 seconds.
Not tainted 6.8.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:23936 pid:5097 tgid:5097 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf12/0x5c00 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6817
io_schedule+0xbe/0x130 kernel/sched/core.c:9023
folio_wait_bit_common+0x3dc/0x9c0 mm/filemap.c:1274
__folio_lock mm/filemap.c:1612 [inline]
folio_lock include/linux/pagemap.h:1048 [inline]
folio_lock include/linux/pagemap.h:1044 [inline]
__filemap_get_folio+0x633/0xaa0 mm/filemap.c:1865
truncate_inode_pages_range+0x3a0/0xf00 mm/truncate.c:367
ntfs_evict_big_inode+0x32/0x530 fs/ntfs/inode.c:2251
evict+0x2ed/0x6b0 fs/inode.c:665
dispose_list+0x117/0x1e0 fs/inode.c:698
evict_inodes+0x34f/0x450 fs/inode.c:748
generic_shutdown_super+0xb5/0x3d0 fs/super.c:631
kill_block_super+0x3b/0x90 fs/super.c:1680
deactivate_locked_super+0xbc/0x1a0 fs/super.c:477
deactivate_super+0xde/0x100 fs/super.c:510
cleanup_mnt+0x222/0x450 fs/namespace.c:1267
task_work_run+0x14d/0x240 kernel/task_work.c:180
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:108 [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+0x281/0x2b0 kernel/entry/common.c:212
do_syscall_64+0xe0/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fb53ee7e0d7
RSP: 002b:00007ffcbeab36c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fb53ee7e0d7
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffcbeab3780
RBP: 00007ffcbeab3780 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffcbeab4840
R13: 00007fb53eec83b9 R14: 0000000000186367 R15: 0000000000000009
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d1acba0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8d1acba0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8d1acba0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
3 locks held by kworker/u4:3/49:
5 locks held by kworker/u4:16/2982:
2 locks held by getty/4813:
#0: ffff8880295c40a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc6/0x1490 drivers/tty/n_tty.c:2201
1 lock held by syz-executor.5/5097:
#0: ffff88807b1be0e0 (&type->s_umount_key#81){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88807b1be0e0 (&type->s_umount_key#81){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88807b1be0e0 (&type->s_umount_key#81){+.+.}-{3:3}, at: deactivate_super+0xd6/0x100 fs/super.c:509
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x277/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x299/0x300 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+0xf87/0x1210 kernel/hung_task.c:379
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 15533 Comm: vivid-000-vid-c Not tainted 6.8.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:lockdep_hardirqs_on_prepare kernel/locking/lockdep.c:4356 [inline]
RIP: 0010:lockdep_hardirqs_on_prepare+0xbe/0x420 kernel/locking/lockdep.c:4311
Code: e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 09 02 00 00 44 8b 05 54 04 3b 11 45 85 c0 0f 84 e3 00 00 00 65 48 8b 1c 25 80 c2 03 00 <48> 8d bb b0 0a 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffffc900152bfc28 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff888039e35940 RCX: 1ffffffff1e75691
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8ca97a60
RBP: ffffc900152bfdd8 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff8f3ae717 R11: 0000000000000001 R12: ffff8880b983d7c8
R13: 0000000000000000 R14: ffff888039e35bf0 R15: ffff8880b983ccc0
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00e713e48 CR3: 000000000cf78000 CR4: 0000000000350ef0
Call Trace:
trace_hardirqs_on+0x36/0x40 kernel/trace/trace_preemptirq.c:61
raw_spin_rq_unlock_irq kernel/sched/sched.h:1397 [inline]
__schedule+0x3a6a/0x5c00 kernel/sched/core.c:6731
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6817
vivid_thread_vid_cap+0x6ca/0xb90 drivers/media/test-drivers/vivid/vivid-kthread-cap.c:770
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242