------------[ cut here ]------------ WARNING: CPU: 0 PID: 4291 at include/linux/backing-dev.h:289 inode_to_wb include/linux/backing-dev.h:285 [inline] WARNING: CPU: 0 PID: 4291 at include/linux/backing-dev.h:289 account_page_dirtied mm/page-writeback.c:2474 [inline] WARNING: CPU: 0 PID: 4291 at include/linux/backing-dev.h:289 __set_page_dirty+0xaf5/0xdc0 mm/page-writeback.c:2522 Modules linked in: CPU: 0 PID: 4291 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 RIP: 0010:inode_to_wb include/linux/backing-dev.h:285 [inline] RIP: 0010:account_page_dirtied mm/page-writeback.c:2474 [inline] RIP: 0010:__set_page_dirty+0xaf5/0xdc0 mm/page-writeback.c:2522 Code: ec d7 ff 49 ff cf e9 5b fc ff ff e8 55 ec d7 ff 48 ff cb e9 e4 fb ff ff e8 48 ec d7 ff 48 ff cb e9 c4 fc ff ff e8 3b ec d7 ff <0f> 0b 43 80 3c 3e 00 0f 85 8f f9 ff ff e9 92 f9 ff ff 89 d9 80 e1 RSP: 0018:ffffc90002f9f858 EFLAGS: 00010093 RAX: ffffffff81a134d5 RBX: 0000000000000000 RCX: ffff88802ad1d940 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffea0001dd6c80 R08: ffff8880170a4eb7 R09: 1ffff11002e149d6 R10: dffffc0000000000 R11: ffffed1002e149d7 R12: ffff8880170a4d38 R13: ffff8880170a4eb0 R14: 1ffff11002e149d6 R15: dffffc0000000000 FS: 0000555556f65500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000180d3f379188 CR3: 0000000017b02000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mark_buffer_dirty+0x2d7/0x490 fs/buffer.c:1108 gfs2_unpin+0x126/0x9a0 fs/gfs2/lops.c:111 buf_lo_after_commit+0x15a/0x1a0 fs/gfs2/lops.c:750 lops_after_commit fs/gfs2/lops.h:49 [inline] gfs2_log_flush+0x1174/0x2600 fs/gfs2/log.c:1109 do_sync+0x9b0/0xc40 fs/gfs2/quota.c:986 gfs2_quota_sync+0x32c/0x700 fs/gfs2/quota.c:1329 gfs2_sync_fs+0x48/0xb0 fs/gfs2/super.c:651 sync_filesystem+0xe6/0x220 fs/sync.c:56 generic_shutdown_super+0x6b/0x300 fs/super.c:448 kill_block_super+0x7c/0xe0 fs/super.c:1427 deactivate_locked_super+0x93/0xf0 fs/super.c:335 cleanup_mnt+0x42d/0x4e0 fs/namespace.c:1148 task_work_run+0x125/0x1a0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0x10f/0x130 kernel/entry/common.c:181 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0