INFO: task syz.0.2084:15829 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.2084      state:D stack:25280 pid:15829 tgid:15828 ppid:14208  task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x15dd/0x52d0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_read_slowpath+0x61e/0x920
 down_read+0x99/0x2e0
 super_lock+0x2d6/0x3d0
 __iterate_supers+0x126/0x290
 __ia32_sys_sync+0xa0/0x120
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f477b19c799
RSP: 002b:00007f477c101028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f477b415fa0 RCX: 00007f477b19c799
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f477b415fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f477b416038 R14: 00007f477b415fa0 R15: 00007ffea0edeed8
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/35:
 #0: ffffffff8e75e5a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5633:
 #0: ffff8881130db0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000356b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0
2 locks held by syz-executor/10285:
2 locks held by kworker/1:6/10410:
 #0: ffff88810006b148 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0xa52/0x18c0
 #1: ffffc90006c17c40 (xfrm_state_gc_work){+.+.}-{0:0}, at: process_scheduled_works+0xa8d/0x18c0
3 locks held by syz-executor/11778:
2 locks held by syz-executor/12259:
2 locks held by syz-executor/12941:
1 lock held by syz-executor/13970:
 #0: ffffffff8e764838 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x38d/0x770
1 lock held by syz.0.2084/15829:
 #0: ffff888117c600e0 (&type->s_umount_key#78){++++}-{4:4}, at: super_lock+0x2d6/0x3d0
3 locks held by syz.8.2599/17977:
1 lock held by syz.4.2600/17978:
 #0: ffffffff8fbd1088 (rtnl_mutex){+.+.}-{4:4}, at: ppp_release+0x87/0x1f0

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 35 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+0xfd9/0x1030
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 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: 11778 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:rcu_lockdep_current_cpu_online+0x87/0x120
Code: 3c 30 00 74 08 48 89 df e8 f6 db 83 00 48 8b 03 48 8d 98 c0 6c 1d 93 48 8d b8 e8 6c 1d 93 48 89 f8 48 c1 e8 03 42 80 3c 30 00 <74> 05 e8 d2 db 83 00 4c 8b 7b 28 48 83 c3 20 48 89 d8 48 c1 e8 03
RSP: 0018:ffffc90003207428 EFLAGS: 00000246
RAX: 1ffff110478c779d RBX: ffff88823c63bcc0 RCX: 0000000080000001
RDX: ffff88810c201d40 RSI: ffffffff8c27f160 RDI: ffff88823c63bce8
RBP: 0000000000000000 R08: ffffffff82009f7d R09: ffffffff8e75e5a0
R10: ffffc90003207580 R11: fffff52000640eb3 R12: ffff8881a9ba3058
R13: ffffc90003207578 R14: dffffc0000000000 R15: 1ffff92000640eaf
FS:  00005555788f8500(0000) GS:ffff8882a9465000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001f00 CR3: 0000000114b40000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 rcu_read_lock_held+0x1e/0x50
 xas_start+0x295/0x770
 xas_load+0x2c/0x5b0
 filemap_get_entry+0x181/0x3f0
 __filemap_get_folio_mpol+0x6d/0xb00
 __get_node_folio+0x20f/0xe90
 f2fs_update_inode_page+0x83/0x2e0
 f2fs_write_checkpoint+0xbee/0x26a0
 kill_f2fs_super+0x314/0x720
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x437/0x4d0
 task_work_run+0x1d9/0x270
 exit_to_user_mode_loop+0xed/0x480
 do_syscall_64+0x32d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3f4cf9d9d7
Code: a2 c7 05 1c fd 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007fff2fdbbc28 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f3f4d032050 RCX: 00007f3f4cf9d9d7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff2fdbbce0
RBP: 00007fff2fdbbce0 R08: 00007fff2fdbcce0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff2fdbcd70
R13: 00007f3f4d032050 R14: 00000000000544b8 R15: 00007fff2fdbcdb0
 </TASK>
