INFO: task can't die in ntfs_lookup_inode_by_name

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 91265a6da44d Add linux-next specific files for 20220303
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=13bcb7d1700000
kernel config: https://syzkaller.appspot.com/x/.config?x=617f79440a35673a
dashboard link: https://syzkaller.appspot.com/bug?extid=0490436a2f55a0e72414
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
CC: [an...@tuxera.com linux-...@vger.kernel.org linux-n...@lists.sourceforge.net]

Unfortunately, I don't have any reproducer for this issue yet.

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+049043...@syzkaller.appspotmail.com

INFO: task syz-executor.3:12334 can't die for more than 143 seconds.
task:syz-executor.3 state:R running task stack:27568 pid:12334 ppid: 3631 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5043 [inline]
__schedule+0xa94/0x4910 kernel/sched/core.c:6352
ntfs_lookup_inode_by_name+0x5e9/0x2ef0 fs/ntfs/dir.c:191
</TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff8bd858e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6498
2 locks held by getty/3279:
#0: ffff88801da12098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002e562e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2075
1 lock held by syz-executor.3/12334:

=============================================

Kernel panic - not syncing: hung_task: blocked tasks
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 5.17.0-rc6-next-20220303-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
panic+0x2d7/0x636 kernel/panic.c:274
check_hung_uninterruptible_tasks kernel/hung_task.c:260 [inline]
watchdog.cold+0x1ca/0x1de kernel/hung_task.c:413
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
</TASK>
Kernel Offset: disabled
Rebooting in 86400 seconds..


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[syzbot]

Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.