gfs2: fsid=syz:syz.0: first mount done, others may mount
gfs2: fsid=syz:syz.0: found 1 quota changes
------------[ cut here ]------------
WARNING: CPU: 1 PID: 15240 at include/linux/backing-dev.h:256 inode_to_wb include/linux/backing-dev.h:252 [inline]
WARNING: CPU: 1 PID: 15240 at include/linux/backing-dev.h:256 folio_account_dirtied mm/page-writeback.c:2640 [inline]
WARNING: CPU: 1 PID: 15240 at include/linux/backing-dev.h:256 __folio_mark_dirty+0x912/0x1110 mm/page-writeback.c:2691
Modules linked in:
CPU: 1 PID: 15240 Comm: syz.4.2586 Not tainted 6.6.93-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:inode_to_wb include/linux/backing-dev.h:252 [inline]
RIP: 0010:folio_account_dirtied mm/page-writeback.c:2640 [inline]
RIP: 0010:__folio_mark_dirty+0x912/0x1110 mm/page-writeback.c:2691
Code: e9 92 f8 ff ff e8 de bf cd ff 0f 0b e9 d9 f8 ff ff e8 d2 bf cd ff 48 89 df 48 8b 74 24 28 e8 e5 c3 2d 00 eb a6 e8 be bf cd ff <0f> 0b e9 84 fb ff ff 89 c2 80 e2 07 80 c2 03 38 ca 0f 8c f2 f8 ff
RSP: 0018:ffffc900034f7480 EFLAGS: 00010083
RAX: ffffffff81b7d722 RBX: ffffea00017bb140 RCX: 0000000000080000
RDX: ffffc90017c2b000 RSI: 000000000001f888 RDI: 000000000001f889
RBP: 0000000000000001 R08: ffffea00017bb147 R09: 1ffffd40002f7628
R10: dffffc0000000000 R11: fffff940002f7629 R12: 1ffff11003f9c6c1
R13: ffff88801fce3490 R14: 0000000000000000 R15: ffff88801fce3608
FS:  00007f61b5b916c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f762cfbf000 CR3: 000000006346c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 mark_buffer_dirty+0x26e/0x4d0 fs/buffer.c:1212
 gfs2_unpin+0x125/0x9a0 fs/gfs2/lops.c:111
 buf_lo_after_commit+0x15e/0x1b0 fs/gfs2/lops.c:745
 lops_after_commit fs/gfs2/lops.h:51 [inline]
 gfs2_log_flush+0x1094/0x24b0 fs/gfs2/log.c:1117
 gfs2_write_inode+0x23f/0x3d0 fs/gfs2/super.c:457
 write_inode fs/fs-writeback.c:1473 [inline]
 __writeback_single_inode+0x705/0xee0 fs/fs-writeback.c:1690
 writeback_single_inode+0x211/0x720 fs/fs-writeback.c:1746
 sync_inode_metadata+0xba/0x110 fs/fs-writeback.c:2811
 gfs2_fsync+0x1b6/0x350 fs/gfs2/file.c:762
 __gfs2_fallocate+0x18bd/0x1c00 fs/gfs2/file.c:1349
 gfs2_fallocate+0x344/0x470 fs/gfs2/file.c:1395
 vfs_fallocate+0x58e/0x700 fs/open.c:324
 ksys_fallocate fs/open.c:347 [inline]
 __do_sys_fallocate fs/open.c:355 [inline]
 __se_sys_fallocate fs/open.c:353 [inline]
 __x64_sys_fallocate+0xc1/0x110 fs/open.c:353
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f61b4d8e929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f61b5b91038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007f61b4fb5fa0 RCX: 00007f61b4d8e929
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007f61b4e10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000001000f4 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f61b4fb5fa0 R15: 00007ffec8e36728
 </TASK>