INFO: task syz-executor:18210 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21032 pid:18210 tgid:18210 ppid:1      task_flags:0x400140 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 io_schedule+0x80/0xd0
 folio_wait_bit_common+0x6b0/0xb90
 __filemap_get_folio+0x139/0xaf0
 truncate_inode_pages_range+0x3ed/0xda0
 evict+0x517/0x9c0
 evict_inodes+0x64c/0x6d0
 generic_shutdown_super+0x9a/0x2c0
 kill_block_super+0x44/0x90
 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: 0033:0x7f653578fed7
RSP: 002b:00007ffde6c16328 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f6535811c05 RCX: 00007f653578fed7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffde6c163e0
RBP: 00007ffde6c163e0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffde6c17470
R13: 00007f6535811c05 R14: 000000000008f379 R15: 00007ffde6c174b0
 </TASK>

Showing all locks held in the system:
4 locks held by kworker/u8:0/12:
 #0: ffff88801b2f7148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc900000f7bc0 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f52d090 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf7/0x800
 #3: ffffffff8e13fa40 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x4c/0x570
1 lock held by khungtaskd/34:
 #0: ffffffff8e13a0e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
5 locks held by kworker/u9:7/3614:
3 locks held by dhcpcd/5596:
2 locks held by getty/5679:
 #0: ffff8880238cd0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900029062f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
1 lock held by syz-executor/18210:
 #0: ffff8881145f80e0 (&type->s_umount_key#64){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0
2 locks held by syz-executor/20766:
 #0: ffff8880455c20e0 (&type->s_umount_key#86){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8e56eb28 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz-executor/20852:
 #0: ffff888117a100e0 (&type->s_umount_key#86){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8e56eb28 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz-executor/21567:
 #0: ffff8881135b40e0 (&type->s_umount_key#86){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8e56eb28 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz-executor/21816:
 #0: ffff8881107980e0 (&type->s_umount_key#86){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8e56eb28 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz.8.3610/23042:
 #0: ffff88811c6960e0 (&type->s_umount_key#86){++++}-{4:4}, at: path_mount+0xcd2/0xfe0
 #1: ffffffff8e56eb28 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
2 locks held by syz-executor/23134:
 #0: ffff888106fa60e0 (&type->s_umount_key#86){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffffffff8e56eb28 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb4/0x520
7 locks held by syz-executor/23400:
 #0: ffff888106a5c428 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x211/0xb30
 #1: ffff88803b982c88 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1de/0x540
 #2: ffff888022b72f08 (kn->active#54){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x231/0x540
 #3: ffffffff8edb0188 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: del_device_store+0xd1/0x360
 #4: ffff888118e120e8 (&dev->mutex){....}-{4:4}, at: device_release_driver_internal+0xb6/0x800
 #5: ffff8880232d2250 (&devlink->lock_key#20){+.+.}-{4:4}, at: nsim_drv_remove+0x50/0x160
 #6: ffffffff8e13fb78 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x3b9/0x730
2 locks held by dhcpcd-run-hook/23461:

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 Comm: khungtaskd Not tainted syzkaller #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+0x439/0x7d0
 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: 8649 Comm: kworker/0:6 Not tainted syzkaller #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:delay_tsc+0x5b/0xc0
Code: 31 49 89 d7 49 c1 e7 20 49 09 c7 4d 29 f7 49 39 df 73 53 bf 01 00 00 00 e8 b2 d8 16 f6 65 8b 05 3b 7b 27 07 85 c0 74 1c f3 90 <bf> 01 00 00 00 e8 eb d6 16 f6 e8 16 3c 01 00 39 c5 75 0e 0f ae e8
RSP: 0000:ffffc90002aff8c0 EFLAGS: 00000286
RAX: 0000000080000000 RBX: 00000000000036b2 RCX: 0000000000000000
RDX: 00000000000001df RSI: ffffffff8be33e60 RDI: 00000000ffffffff
RBP: 0000000000000000 R08: ffffe8ffffc94c07 R09: 1ffffd1ffff92980
R10: dffffc0000000000 R11: ffffffff8b7934a0 R12: 0000000000000001
R13: 0000000000000002 R14: 000001df02e9792c R15: 00000000000025b4
FS:  0000000000000000(0000) GS:ffff8880b8615000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f03837ca57c CR3: 000000010f43a000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 try_check_zero+0x5dd/0x670
 process_srcu+0x2c6/0x1410
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x439/0x7d0
 ret_from_fork_asm+0x1a/0x30
 </TASK>
