loop0: detected capacity change from 0 to 32768
gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms
gfs2: fsid=syz:syz.0: first mount done, others may mount
gfs2: fsid=syz:syz.0: found 1 quota changes
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5315 at ./include/linux/backing-dev.h:255 inode_to_wb include/linux/backing-dev.h:251 [inline]
WARNING: CPU: 0 PID: 5315 at ./include/linux/backing-dev.h:255 folio_account_dirtied mm/page-writeback.c:2714 [inline]
WARNING: CPU: 0 PID: 5315 at ./include/linux/backing-dev.h:255 __folio_mark_dirty+0xa4f/0xeb0 mm/page-writeback.c:2766
Modules linked in:
CPU: 0 UID: 0 PID: 5315 Comm: syz.0.0 Not tainted 6.15.0-syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:inode_to_wb include/linux/backing-dev.h:251 [inline]
RIP: 0010:folio_account_dirtied mm/page-writeback.c:2714 [inline]
RIP: 0010:__folio_mark_dirty+0xa4f/0xeb0 mm/page-writeback.c:2766
Code: 48 c7 c7 00 3e 74 8b e8 7f d0 8a ff 90 0f 0b 90 90 e9 9e f7 ff ff e8 e0 73 c6 ff 90 0f 0b 90 e9 23 fe ff ff e8 d2 73 c6 ff 90 <0f> 0b 90 e9 3e fa ff ff 89 c2 80 e2 07 80 c2 03 38 ca 0f 8c b6 f7
RSP: 0018:ffffc9000d40f3a8 EFLAGS: 00010083
RAX: ffffffff81f97dfe RBX: ffffea0000fd2740 RCX: 0000000000100000
RDX: ffffc9000df4a000 RSI: 000000000000161f RDI: 0000000000001620
RBP: 0000000000000001 R08: ffff888031d24cff R09: 1ffff110063a499f
R10: dffffc0000000000 R11: ffffed10063a49a0 R12: ffff888031d24b88
R13: 1ffff110063a499f R14: 0000000000000000 R15: ffff888031d24cf8
FS:  00007f052ea556c0(0000) GS:ffff88808d6c2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f05229ff000 CR3: 000000003c148000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 mark_buffer_dirty+0x271/0x410 fs/buffer.c:1212
 gfs2_unpin+0x125/0x9c0 fs/gfs2/lops.c:111
 buf_lo_after_commit+0x15e/0x1b0 fs/gfs2/lops.c:736
 lops_after_commit fs/gfs2/lops.h:51 [inline]
 gfs2_log_flush+0x109f/0x24c0 fs/gfs2/log.c:1115
 gfs2_write_inode+0x23f/0x3e0 fs/gfs2/super.c:457
 write_inode fs/fs-writeback.c:1525 [inline]
 __writeback_single_inode+0x6ee/0xff0 fs/fs-writeback.c:1745
 writeback_single_inode+0x1f3/0x6a0 fs/fs-writeback.c:1801
 sync_inode_metadata+0xb1/0x100 fs/fs-writeback.c:2883
 gfs2_fsync+0x1a6/0x370 fs/gfs2/file.c:763
 __gfs2_fallocate+0x18c6/0x1c10 fs/gfs2/file.c:1356
 gfs2_fallocate+0x340/0x470 fs/gfs2/file.c:1402
 vfs_fallocate+0x6a3/0x830 fs/open.c:338
 ksys_fallocate fs/open.c:362 [inline]
 __do_sys_fallocate fs/open.c:367 [inline]
 __se_sys_fallocate fs/open.c:365 [inline]
 __x64_sys_fallocate+0xc0/0x110 fs/open.c:365
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f052db8e969
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:00007f052ea55038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007f052ddb5fa0 RCX: 00007f052db8e969
RDX: 000000000000b7d4 RSI: 0000000000000000 RDI: 000000000000000c
RBP: 00007f052dc10ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000001001f0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f052ddb5fa0 R15: 00007ffc5b007288
 </TASK>