syzbot

------------[ cut here ]------------
WARNING: CPU: 0 PID: 4374 at include/linux/backing-dev.h:247 inode_to_wb include/linux/backing-dev.h:243 [inline]
WARNING: CPU: 0 PID: 4374 at include/linux/backing-dev.h:247 folio_account_dirtied mm/page-writeback.c:2587 [inline]
WARNING: CPU: 0 PID: 4374 at include/linux/backing-dev.h:247 __folio_mark_dirty+0x95d/0x11e0 mm/page-writeback.c:2638
Modules linked in:
CPU: 0 PID: 4374 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:inode_to_wb include/linux/backing-dev.h:243 [inline]
RIP: 0010:folio_account_dirtied mm/page-writeback.c:2587 [inline]
RIP: 0010:__folio_mark_dirty+0x95d/0x11e0 mm/page-writeback.c:2638
Code: e9 6a f8 ff ff e8 b3 e1 d3 ff 0f 0b e9 bb f8 ff ff e8 a7 e1 d3 ff 48 89 df 48 8b 74 24 18 e8 1a d7 2a 00 eb a6 e8 93 e1 d3 ff <0f> 0b 43 80 3c 2c 00 0f 85 76 fb ff ff e9 79 fb ff ff 89 c2 80 e2
RSP: 0018:ffffc90003347a58 EFLAGS: 00010093
RAX: ffffffff81acf4cd RBX: ffffea0000b8aac0 RCX: ffff88802c780000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: dffffc0000000000 R09: ffffed102919d930
R10: ffffed102919d930 R11: 1ffff1102919d92f R12: 1ffff1102919d92f
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888148cec978
FS:  000055558761a500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f284ad4a000 CR3: 000000002f58a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __set_page_dirty include/linux/pagemap.h:1088 [inline]
 mark_buffer_dirty+0x33f/0x7a0 fs/buffer.c:1105
 gfs2_unpin+0x125/0x9a0 fs/gfs2/lops.c:111
 buf_lo_after_commit+0x15a/0x1a0 fs/gfs2/lops.c:747
 lops_after_commit fs/gfs2/lops.h:49 [inline]
 gfs2_log_flush+0x10be/0x24e0 fs/gfs2/log.c:1116
 gfs2_kill_sb+0x50/0xd0 fs/gfs2/ops_fstype.c:1729
 deactivate_locked_super+0x93/0xf0 fs/super.c:332
 cleanup_mnt+0x463/0x4f0 fs/namespace.c:1191
 task_work_run+0x1ca/0x250 kernel/task_work.c:203
 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+0xee/0x180 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd464d909f7
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:00007ffd2f93b5b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fd464e11d7d RCX: 00007fd464d909f7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd2f93b670
RBP: 00007ffd2f93b670 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd2f93c700
R13: 00007fd464e11d7d R14: 0000000000017e01 R15: 00007ffd2f93c740
 </TASK>