INFO: task syz-executor:5858 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:21832 pid:5858  tgid:5858  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: 0033:0x7f820e18ff17
RSP: 002b:00007ffda30ba068 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f820e211c05 RCX: 00007f820e18ff17
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffda30ba120
RBP: 00007ffda30ba120 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffda30bb1b0
R13: 00007f820e211c05 R14: 0000000000010d22 R15: 00007ffda30bb1f0
 </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
2 locks held by getty/5674:
 #0: ffff8880296880a0 (&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/5858:
 #0: ffff88803b1d40e0 (&type->s_umount_key#88){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
1 lock held by syz-executor/6898:
1 lock held by syz.4.269/7313:
 #0: ffff88803b1d40e0 (&type->s_umount_key#88){++++}-{4:4}, at: super_lock+0x2a9/0x3b0
1 lock held by syz.8.469/8210:
 #0: ffff88803b1d40e0 (&type->s_umount_key#88){++++}-{4:4}, at: super_lock+0x2a9/0x3b0
1 lock held by syz-executor/9740:
 #0: ffffffff8e13f978 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2f6/0x730

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

NMI backtrace for cpu 0
CPU: 0 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+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 9740 Comm: syz-executor 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
RIP: 0010:check_preemption_disabled+0x25/0x120
Code: 90 90 90 90 90 55 41 57 41 56 53 48 83 ec 10 65 48 8b 05 be 8e 26 07 48 89 44 24 08 65 8b 05 c6 8e 26 07 65 8b 0d bb 8e 26 07 <f7> c1 ff ff ff 7f 74 23 65 48 8b 0d 9b 8e 26 07 48 3b 4c 24 08 0f
RSP: 0018:ffffc9000661f598 EFLAGS: 00000082
RAX: 0000000000000001 RBX: 0000000000000283 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff8dba6cac RDI: ffffffff8be33680
RBP: ffff888117f90af0 R08: ffffffff8fa38a37 R09: 1ffffffff1f47146
R10: dffffc0000000000 R11: fffffbfff1f47147 R12: 0000000000000000
R13: 0000000000000000 R14: ffff888039e86410 R15: ffff888117f90000
FS:  000055555a152500(0000) GS:ffff8881a3c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555a175608 CR3: 0000000109512000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 lock_release+0x27a/0x3e0
 _raw_spin_unlock+0x16/0x50
 filemap_remove_folio+0x1a2/0x1f0
 truncate_inode_folio+0x5d/0x70
 shmem_undo_range+0x3a9/0x14b0
 shmem_evict_inode+0x272/0xa70
 evict+0x504/0x9c0
 __dentry_kill+0x209/0x660
 dput+0x19f/0x2b0
 __fput+0x68e/0xa70
 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: 0033:0x7f332f58d84a
Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 43 91 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 a3 91 02 00 8b 44 24
RSP: 002b:00007fff48f67fd0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007f332f58d84a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007fff48f6802c R08: 0000000000000000 R09: 00007fff48f67d37
R10: 0000000000000000 R11: 0000000000000293 R12: 000000000000003d
R13: 00000000000927c0 R14: 00000000000341de R15: 00007fff48f68080
 </TASK>
