INFO: task syz-executor:6025 blocked for more than 147 seconds.
      Not tainted 6.16.0-syzkaller-11895-gcca7a0aae895-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21832 pid:6025  tgid:6025  ppid:1      task_flags:0x400140 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 v9fs_evict_inode+0x170/0x320
 evict+0x504/0x9c0
 __dentry_kill+0x209/0x660
 dput+0x19f/0x2b0
 shrink_dcache_for_umount+0xa0/0x170
 generic_shutdown_super+0x67/0x2c0
 kill_anon_super+0x3b/0x70
 v9fs_kill_super+0x4c/0x90
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x425/0x4c0
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xec/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe601d8ff17
RSP: 002b:00007ffede4957a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fe601e11c05 RCX: 00007fe601d8ff17
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffede495860
RBP: 00007ffede495860 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffede4968f0
R13: 00007fe601e11c05 R14: 000000000002a6ff R15: 00007ffede496930
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e139ee0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
3 locks held by kworker/u9:2/53:
2 locks held by getty/5678:
 #0: ffff8881063990a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900029032f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
1 lock held by syz-executor/6025:
 #0: ffff888034e300e0 (&type->s_umount_key#98){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0
1 lock held by syz-executor/10361:
1 lock held by syz-executor/10363:

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 Comm: khungtaskd Not tainted 6.16.0-syzkaller-11895-gcca7a0aae895-dirty #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250
 nmi_cpu_backtrace+0x39e/0x3d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 watchdog+0xf93/0xfe0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5926 Comm: kworker/0:6 Not tainted 6.16.0-syzkaller-11895-gcca7a0aae895-dirty #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: rcu_gp process_srcu
RIP: 0010:radix_tree_lookup+0x74/0x290
Code: 03 bf 02 00 00 00 4c 89 e6 e8 68 0f 4c f6 49 83 fc 02 0f 85 ff 01 00 00 4d 89 fc 49 83 e4 fc 4c 89 f8 48 c1 e8 03 0f b6 04 28 <84> c0 0f 85 86 01 00 00 45 0f b6 24 24 bf 40 00 00 00 44 89 e6 e8
RSP: 0018:ffffc9000433f8b0 EFLAGS: 00000806
RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffff888020d61cc0
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000002
RBP: dffffc0000000000 R08: ffff888100ef62d7 R09: 1ffff110201dec5a
R10: dffffc0000000000 R11: ffffed10201dec5b R12: ffff88801dc00000
R13: ffff88801a496400 R14: ffffffff8dfe1768 R15: ffff88801dc00002
FS:  0000000000000000(0000) GS:ffff8880b8624000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555646705c8 CR3: 0000000030332000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __queue_work+0x605/0xfb0
 queue_delayed_work_on+0x18b/0x280
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
