------------[ cut here ]------------
WARNING: CPU: 0 PID: 7400 at include/linux/backing-dev.h:256 inode_to_wb include/linux/backing-dev.h:252 [inline]
WARNING: CPU: 0 PID: 7400 at include/linux/backing-dev.h:256 folio_account_dirtied mm/page-writeback.c:2640 [inline]
WARNING: CPU: 0 PID: 7400 at include/linux/backing-dev.h:256 __folio_mark_dirty+0x908/0x10f0 mm/page-writeback.c:2691
Modules linked in:
CPU: 0 PID: 7400 Comm: syz.3.431 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
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+0x908/0x10f0 mm/page-writeback.c:2691
Code: e9 9c f8 ff ff e8 18 96 ce ff 0f 0b e9 e3 f8 ff ff e8 0c 96 ce ff 48 89 df 48 8b 74 24 28 e8 cf 34 2e 00 eb a6 e8 f8 95 ce ff <0f> 0b e9 8e fb ff ff 89 c2 80 e2 07 80 c2 03 38 ca 0f 8c fc f8 ff
RSP: 0018:ffffc90003536ee8 EFLAGS: 00010087
RAX: ffffffff81b88c08 RBX: ffffea0001954600 RCX: 0000000000080000
RDX: ffffc9000d60b000 RSI: 0000000000028480 RDI: 0000000000028481
RBP: 0000000000000001 R08: ffff888148c9ef8f R09: 1ffff11029193df1
R10: dffffc0000000000 R11: ffffed1029193df2 R12: 1ffff11029193df1
R13: ffff888148c9ee10 R14: 0000000000000000 R15: ffff888148c9ef88
FS:  00007f913e1426c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd0b3d2168 CR3: 000000002d5b9000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 mark_buffer_dirty+0x26e/0x4c0 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+0x10e6/0x2500 fs/gfs2/log.c:1117
 gfs2_write_inode+0x23f/0x3d0 fs/gfs2/super.c:457
 write_inode fs/fs-writeback.c:1483 [inline]
 __writeback_single_inode+0x705/0xec0 fs/fs-writeback.c:1700
 writeback_single_inode+0x21f/0x760 fs/fs-writeback.c:1756
 sync_inode_metadata+0xe0/0x140 fs/fs-writeback.c:2828
 gfs2_fsync+0x1b6/0x350 fs/gfs2/file.c:762
 generic_write_sync+0x18d/0x200 include/linux/fs.h:2651
 gfs2_file_write_iter+0xc15/0xe90 fs/gfs2/file.c:1151
 do_iter_readv_writev fs/read_write.c:-1 [inline]
 do_iter_write+0x738/0xc30 fs/read_write.c:860
 iter_file_splice_write+0x6a3/0xcb0 fs/splice.c:736
 do_splice_from fs/splice.c:933 [inline]
 direct_splice_actor+0xe8/0x130 fs/splice.c:1142
 splice_direct_to_actor+0x304/0x8c0 fs/splice.c:1088
 do_splice_direct+0x1d5/0x2f0 fs/splice.c:1194
 do_sendfile+0x5f2/0xef0 fs/read_write.c:1254
 __do_sys_sendfile64 fs/read_write.c:1322 [inline]
 __se_sys_sendfile64+0x145/0x1a0 fs/read_write.c:1308
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f913d19cdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f913e142028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f913d415fa0 RCX: 00007f913d19cdd9
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000006
RBP: 00007f913d232d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000080000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f913d416038 R14: 00007f913d415fa0 R15: 00007fffcbe3b1a8
 </TASK>