INFO: task syz.3.1241:2167 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.1241      state:D stack:25464 pid:2167  tgid:2166  ppid:31918  task_flags:0x400040 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x17b4/0x5680
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_write_slowpath+0x883/0x1080
 down_write+0x1bc/0x200
 super_lock+0x289/0x3d0
 user_get_super+0xc8/0x120
 __se_sys_quotactl+0x540/0x9e0
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe625d9cdd9
RSP: 002b:00007fe626c53028 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007fe626015fa0 RCX: 00007fe625d9cdd9
RDX: 0000000000000000 RSI: 0000200000000080 RDI: ffffffff80000200
RBP: 00007fe625e32d69 R08: 0000000000000000 R09: 0000000000000000
R10: 00002000000000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe626016038 R14: 00007fe626015fa0 R15: 00007ffc4c7aa478
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e95cd60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5435:
 #0: ffff8881137ce0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900023092e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13a0
3 locks held by syz-executor/10625:
1 lock held by syz.3.1241/2167:
 #0: ffff8881099800d8 (&type->s_umount_key#59){++++}-{4:4}, at: super_lock+0x289/0x3d0
1 lock held by syz.1.1320/4097:
 #0: ffff8881099800d8 (&type->s_umount_key#59){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
3 locks held by syz.6.1531/9020:
 #0: ffff88816aae1ef0 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x246/0x320
 #1: ffff888112048410 (sb_writers#3){.+.+}-{0:0}, at: vfs_writev+0x2aa/0x990
 #2: ffff8881099800d8 (&type->s_umount_key#59){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
2 locks held by syz.3.1546/9207:
 #0: ffff88811cdfe410 (sb_writers#3){.+.+}-{0:0}, at: vfs_writev+0x2aa/0x990
 #1: ffff8881099800d8 (&type->s_umount_key#59){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
1 lock held by syz-executor/10007:
 #0: ffffffff8e963068 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x38d/0x770
2 locks held by syz.0.1614/11697:
 #0: ffffffff8f84ab60 (input_mutex){+.+.}-{4:4}, at: __input_unregister_device+0x2fa/0x610
 #1: ffffffff8e963068 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x38d/0x770
3 locks held by syz.4.1618/11771:
 #0: ffff88811655c410 (sb_writers#19){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90
 #1: ffff88811fab8140 (&type->i_mutex_dir_key#9/1){+.+.}-{4:4}, at: filename_unlinkat+0x2a7/0x610
 #2: ffff88811fab85c0 (&fi->mutex){+.+.}-{4:4}, at: fuse_lock_inode+0xd3/0x120
1 lock held by dhcpcd-run-hook/11788:

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

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+0xe8/0x150
 nmi_cpu_backtrace+0x274/0x2d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 sys_info+0x135/0x170
 watchdog+0xfd3/0x1030
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 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: 10625 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:lock_release+0x7f/0x3c0
Code: b6 fb 8e 0e 00 0f 84 1c 02 00 00 65 8b 05 99 65 97 11 85 c0 0f 85 0d 02 00 00 65 4c 8b 3d e1 1f 97 11 41 83 bf 8c 0b 00 00 00 <0f> 85 f7 01 00 00 49 81 3e 80 d3 fc 93 0f 84 ea 01 00 00 9c 5b fa
RSP: 0018:ffffc900098af2b0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff8881127730d0 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff8c28acc0 RDI: ffffffff8c28ac80
RBP: 0000000000000000 R08: ffff8881127730df R09: 1ffff110224ee61b
R10: dffffc0000000000 R11: ffffed10224ee61c R12: ffffc900098af410
R13: ffffffff843ac23f R14: ffff888112773138 R15: ffff888104688000
FS:  00005555823d6500(0000) GS:ffff88818dc90000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffda5da2038 CR3: 000000016b540000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 up_read+0x16/0x20
 f2fs_get_node_info+0x58f/0x1e20
 read_node_folio+0x221/0x410
 __get_node_folio+0x3ca/0xdd0
 f2fs_update_inode_page+0x83/0x2e0
 f2fs_write_checkpoint+0xbee/0x26a0
 kill_f2fs_super+0x314/0x730
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x437/0x4d0
 task_work_run+0x1d9/0x270
 do_exit+0x70f/0x22c0
 do_group_exit+0x21b/0x2d0
 __x64_sys_exit_group+0x3f/0x40
 x64_sys_call+0x221a/0x2240
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f40ce99cdd9
Code: Unable to access opcode bytes at 0x7f40ce99cdaf.
RSP: 002b:00007fff66af78d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f40cea32192 RCX: 00007f40ce99cdd9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000010 R08: 0000000000000000 R09: 00007f40cea32120
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff66af8b90
R13: 00007f40cea32120 R14: 00005555823d64e8 R15: 00007fff66af9c60
 </TASK>
