syzbot

 generic_shutdown_super+0x134/0x2b0 fs/super.c:693
 kill_block_super+0x44/0x90 fs/super.c:1660
 erofs_kill_sb+0x4c/0x140 fs/erofs/super.c:794
 deactivate_locked_super+0x97/0x100 fs/super.c:481
 cleanup_mnt+0x429/0x4c0 fs/namespace.c:1259
 task_work_run+0x1ce/0x250 kernel/task_work.c:239
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0xf6/0x180 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
------------[ cut here ]------------
WARNING: CPU: 0 PID: 9905 at include/linux/memcontrol.h:764 folio_lruvec include/linux/memcontrol.h:764 [inline]
WARNING: CPU: 0 PID: 9905 at include/linux/memcontrol.h:764 folio_lruvec_lock_irqsave+0x212/0x270 mm/memcontrol.c:1398
Modules linked in:
CPU: 0 PID: 9905 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:folio_lruvec include/linux/memcontrol.h:764 [inline]
RIP: 0010:folio_lruvec_lock_irqsave+0x212/0x270 mm/memcontrol.c:1398
Code: 4c 89 f7 e8 60 28 f9 ff 48 8b 04 24 49 89 06 e9 1c ff ff ff 48 89 df 48 c7 c6 c0 af b6 8a e8 a5 8d e1 ff c6 05 fe ef 50 0c 01 <0f> 0b e9 1b fe ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 9d fe
RSP: 0018:ffffc90004cdf518 EFLAGS: 00010246
RAX: 48e6c24cc5d16300 RBX: ffffea000091bf40 RCX: 48e6c24cc5d16300
RDX: 0000000000000001 RSI: ffffffff8aaace60 RDI: ffffffff8afc6f80
RBP: ffffc90004cdf5c0 R08: ffffffff8e4a212f R09: 1ffffffff1c94425
R10: dffffc0000000000 R11: fffffbfff1c94426 R12: ffff8880b8e36c28
R13: dffffc0000000000 R14: ffff8880b8e36c30 R15: 0000000000000000
FS:  0000555561bb1500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555561bcc5c8 CR3: 0000000063323000 CR4: 00000000003506f0
DR0: 0000000000000008 DR1: 0000000000000001 DR2: 0000000000000004
DR3: 0000000000000008 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 folio_lruvec_relock_irqsave include/linux/memcontrol.h:1654 [inline]
 folio_batch_move_lru+0x2d8/0x6b0 mm/swap.c:208
 lru_add_drain_cpu+0x10e/0x8c0 mm/swap.c:644
 lru_add_drain+0x121/0x3e0 mm/swap.c:744
 __folio_batch_release+0x48/0xe0 mm/swap.c:1039
 folio_batch_release include/linux/pagevec.h:83 [inline]
 shmem_undo_range+0x5d0/0x1a40 mm/shmem.c:1026
 shmem_truncate_range mm/shmem.c:1135 [inline]
 shmem_evict_inode+0x273/0xa70 mm/shmem.c:1264
 evict+0x486/0x870 fs/inode.c:705
 __dentry_kill+0x431/0x650 fs/dcache.c:611
 dentry_kill+0xb8/0x290 fs/dcache.c:-1
 dput+0xfe/0x1e0 fs/dcache.c:918
 __fput+0x5e5/0x970 fs/file_table.c:392
 task_work_run+0x1ce/0x250 kernel/task_work.c:239
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0xf6/0x180 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f308db90a77
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 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 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007fff95666d78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f308dc13d7d RCX: 00007f308db90a77
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff95666e30
RBP: 00007fff95666e30 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff95667ec0
R13: 00007f308dc13d7d R14: 0000000000071b89 R15: 00007fff95667f00
 </TASK>