------------[ cut here ]------------ WARNING: CPU: 1 PID: 5779 at include/linux/backing-dev.h:256 inode_to_wb include/linux/backing-dev.h:252 [inline] WARNING: CPU: 1 PID: 5779 at include/linux/backing-dev.h:256 folio_account_dirtied mm/page-writeback.c:2640 [inline] WARNING: CPU: 1 PID: 5779 at include/linux/backing-dev.h:256 __folio_mark_dirty+0x908/0x10f0 mm/page-writeback.c:2691 Modules linked in: CPU: 1 PID: 5779 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 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+0x908/0x10f0 mm/page-writeback.c:2691 Code: e9 9c f8 ff ff e8 18 a0 ce ff 0f 0b e9 e3 f8 ff ff e8 0c a0 ce ff 48 89 df 48 8b 74 24 28 e8 6f 2c 2e 00 eb a6 e8 f8 9f 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:ffffc900045df7c8 EFLAGS: 00010093 RAX: ffffffff81b874b8 RBX: ffffea0000bb71c0 RCX: ffff888024163c00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000001 R08: ffffea0000bb71c7 R09: 1ffffd4000176e38 R10: dffffc0000000000 R11: fffff94000176e39 R12: 1ffff11004019831 R13: ffff8880200cc010 R14: 0000000000000000 R15: ffff8880200cc188 FS: 000055558a3fc500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9139985dc0 CR3: 00000000610cd000 CR4: 00000000003506e0 Call Trace: 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 do_sync+0x9f2/0xe50 fs/gfs2/quota.c:976 gfs2_quota_sync+0x411/0x5a0 fs/gfs2/quota.c:1344 gfs2_sync_fs+0x4c/0xb0 fs/gfs2/super.c:670 sync_filesystem+0xea/0x220 fs/sync.c:56 generic_shutdown_super+0x6f/0x2b0 fs/super.c:666 kill_block_super+0x44/0x90 fs/super.c:1660 deactivate_locked_super+0x97/0x100 fs/super.c:481 cleanup_mnt+0x43b/0x4d0 fs/namespace.c:1259 task_work_run+0x1d4/0x260 kernel/task_work.c:245 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:291 [inline] syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302 do_syscall_64+0x61/0xa0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fedaa39c117 Code: a2 c7 05 7c 94 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 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 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffc98193fc8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007fedaa40471f RCX: 00007fedaa39c117 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc98194080 RBP: 00007ffc98194080 R08: 00007ffc98195080 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc98195110 R13: 00007fedaa40471f R14: 0000000000020226 R15: 00007ffc98195150