INFO: task kworker/1:1H:1118 blocked for more than 143 seconds.
      Not tainted 6.16.0-syzkaller-11895-gcca7a0aae895 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:1H    state:D stack:25608 pid:1118  tgid:1118  ppid:2      task_flags:0x4208060 flags:0x00004000
Workqueue: kblockd blk_mq_requeue_work
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_timeout+0x12b/0x270
 nbd_queue_rq+0x662/0xf10
 blk_mq_dispatch_rq_list+0x4c0/0x1900
 __blk_mq_sched_dispatch_requests+0xda4/0x1570
 blk_mq_sched_dispatch_requests+0xd7/0x190
 blk_mq_run_hw_queue+0x348/0x4f0
 blk_mq_run_hw_queues+0x33e/0x430
 blk_mq_requeue_work+0x717/0x760
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </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
4 locks held by kworker/1:1H/1118:
 #0: ffff88801bab4548 ((wq_completion)kblockd){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc900070a7bc0 ((work_completion)(&(&q->requeue_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffff888108034d90 (set->srcu){.+.+}-{0:0}, at: blk_mq_run_hw_queue+0x31f/0x4f0
 #3: ffff888021b28378 (&cmd->lock){+.+.}-{4:4}, at: nbd_queue_rq+0xc8/0xf10
2 locks held by getty/5674:
 #0: ffff888029f770a0 (&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 udevd/6271:
 #0: ffff88810807b358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 Comm: khungtaskd Not tainted 6.16.0-syzkaller-11895-gcca7a0aae895 #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: 5773 Comm: syz-executor Not tainted 6.16.0-syzkaller-11895-gcca7a0aae895 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:common_file_perm+0xbd/0x230
Code: 4d 89 e7 49 c1 ef 03 43 80 3c 2f 00 74 08 4c 89 e7 e8 37 86 9f fd 49 8b 1c 24 48 83 eb 80 48 89 d8 48 c1 e8 03 42 80 3c 28 00 <74> 08 48 89 df e8 19 86 9f fd 4c 63 2d f2 96 3b 09 4c 03 2b 0f 84
RSP: 0018:ffffc900032cfbe0 EFLAGS: 00000246
RAX: 1ffff11004263a90 RBX: ffff88802131d480 RCX: ffff8880286a1cc0
RDX: 0000000000000000 RSI: ffff888104c2a200 RDI: ffffffff8bdcefe0
RBP: ffff888104c2a200 R08: ffff88810b369c03 R09: 1ffff1102166d380
R10: dffffc0000000000 R11: ffffed102166d381 R12: ffff8880286a2570
R13: dffffc0000000000 R14: 0000000000000004 R15: 1ffff110050d44ae
FS:  000055556e675500(0000) GS:ffff8880b8624000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558b6371b000 CR3: 00000000284b6000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 security_file_permission+0x91/0x290
 rw_verify_area+0xbb/0x4d0
 vfs_read+0x154/0x980
 ksys_read+0x145/0x250
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3333d8d5bd
Code: a8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb b5 e8 a8 48 00 00 0f 1f 84 00 00 00 00 00 80 3d a1 af 1f 00 00 74 17 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 5b c3 66 2e 0f 1f 84 00 00 00 00 00 48 83 ec
RSP: 002b:00007fff6ff2f318 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3333d8d5bd
RDX: 0000000000000004 RSI: 00007fff6ff2f32c RDI: 0000000000000003
RBP: 0000000000000000 R08: 00000000326a487e R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff6ff2f740
R13: 0000000000000004 R14: 00007fff6ff2f32c R15: 00007fff6ff2f3c0
 </TASK>
