------------[ cut here ]------------
WARNING: CPU: 0 PID: 3639 at fs/buffer.c:1081 mark_buffer_dirty+0x394/0x7d0
Modules linked in:

CPU: 0 PID: 3639 Comm: syz-executor Not tainted 6.1.112-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:mark_buffer_dirty+0x394/0x7d0 fs/buffer.c:1081
Code: d3 e0 ff 48 8b 7d 00 be 04 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 0b 6a fc ff e8 66 51 89 ff e9 42 ff ff ff e8 5c 51 89 ff <0f> 0b e9 b3 fc ff ff e8 50 51 89 ff 0f 0b e9 f6 fc ff ff e8 44 51
RSP: 0018:ffffc90003d1f820 EFLAGS: 00010293

RAX: ffffffff82015de4 RBX: 0000000000000001 RCX: ffff88802ce0d940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff82015a91 R09: ffffed100e308506
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff888075cd4678 R15: ffff888071842828
FS:  0000555569781500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f169b5fff1c CR3: 000000005fbd1000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 sysv_free_block+0x451/0x960 fs/sysv/balloc.c:87
 free_data fs/sysv/itree.c:334 [inline]
 sysv_truncate+0x376/0x1050 fs/sysv/itree.c:392
 sysv_evict_inode+0x85/0x110 fs/sysv/inode.c:295
 evict+0x529/0x930 fs/inode.c:701
 __dentry_kill+0x436/0x650 fs/dcache.c:611
 dentry_kill+0xbb/0x290
 dput+0xfb/0x1d0 fs/dcache.c:918
 shrink_dcache_for_umount+0x79/0x120 fs/dcache.c:1704
 generic_shutdown_super+0x63/0x340 fs/super.c:473
 kill_block_super+0x7a/0xe0 fs/super.c:1470
 deactivate_locked_super+0xa0/0x110 fs/super.c:332
 cleanup_mnt+0x490/0x520 fs/namespace.c:1186
 task_work_run+0x246/0x300 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd4e357f327
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:00007ffc48df14d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fd4e357f327
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc48df1590
RBP: 00007ffc48df1590 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc48df2610
R13: 00007fd4e35f0134 R14: 0000000000017879 R15: 00007ffc48df2650
 </TASK>