------------[ cut here ]------------ WARNING: CPU: 1 PID: 4301 at include/linux/backing-dev.h:247 inode_to_wb include/linux/backing-dev.h:243 [inline] WARNING: CPU: 1 PID: 4301 at include/linux/backing-dev.h:247 folio_account_dirtied mm/page-writeback.c:2587 [inline] WARNING: CPU: 1 PID: 4301 at include/linux/backing-dev.h:247 __folio_mark_dirty+0x941/0x1210 mm/page-writeback.c:2638 Modules linked in: CPU: 1 PID: 4301 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 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+0x941/0x1210 mm/page-writeback.c:2638 Code: e9 82 f8 ff ff e8 9f 47 d3 ff 0f 0b e9 c9 f8 ff ff e8 93 47 d3 ff 48 89 df 48 8b 74 24 10 e8 a6 9a 2b 00 eb a6 e8 7f 47 d3 ff <0f> 0b e9 69 fb ff ff 89 c2 80 e2 07 80 c2 03 38 ca 0f 8c e2 f8 ff RSP: 0018:ffffc900044b77a0 EFLAGS: 00010093 RAX: ffffffff81af2121 RBX: ffffea0000ab12c0 RCX: ffff888078d9da00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000001 R08: ffffea0000ab12c7 R09: 1ffffd4000156258 R10: dffffc0000000000 R11: fffff94000156259 R12: 0000000000000000 R13: ffff888140d6bd08 R14: 1ffff110281ad7d0 R15: ffff888140d6be80 FS: 000055557a533500(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffea44c4e90 CR3: 000000005aa81000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __set_page_dirty include/linux/pagemap.h:1118 [inline] mark_buffer_dirty+0x33f/0x7a0 fs/buffer.c:1105 gfs2_unpin+0x125/0xa00 fs/gfs2/lops.c:111 buf_lo_after_commit+0x161/0x1b0 fs/gfs2/lops.c:747 lops_after_commit fs/gfs2/lops.h:49 [inline] __gfs2_log_flush+0x10ec/0x24e0 fs/gfs2/log.c:1118 gfs2_log_flush+0x30/0x40 fs/gfs2/log.c:1180 do_sync+0x910/0xbb0 fs/gfs2/quota.c:986 gfs2_quota_sync+0x355/0x780 fs/gfs2/quota.c:1329 gfs2_sync_fs+0x48/0xb0 fs/gfs2/super.c:663 sync_filesystem+0xe6/0x220 fs/sync.c:56 generic_shutdown_super+0x6b/0x340 fs/super.c:474 kill_block_super+0x7c/0xe0 fs/super.c:1481 deactivate_locked_super+0x93/0xf0 fs/super.c:332 cleanup_mnt+0x471/0x4f0 fs/namespace.c:1191 task_work_run+0x1d0/0x260 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:180 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:213 __syscall_exit_to_user_mode_work kernel/entry/common.c:295 [inline] syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:306 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7ff76d3aa157 Code: a2 c7 05 9c 25 25 00 00 00 00 00 eb 96 e8 c1 13 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:00007ffea44c54e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007ff76d437363 RCX: 00007ff76d3aa157 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffea44c55a0 RBP: 00007ffea44c55a0 R08: 00007ffea44c65a0 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffea44c6630 R13: 00007ff76d437363 R14: 000000000003145a R15: 00007ffea44c6670