------------[ cut here ]------------
WARNING: CPU: 0 PID: 10577 at include/linux/backing-dev.h:283 inode_to_wb include/linux/backing-dev.h:283 [inline]
WARNING: CPU: 0 PID: 10577 at include/linux/backing-dev.h:283 account_page_dirtied+0x767/0xa00 mm/page-writeback.c:2430
Modules linked in:
CPU: 0 PID: 10577 Comm: syz-executor.1 Not tainted 5.11.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:inode_to_wb include/linux/backing-dev.h:283 [inline]
RIP: 0010:account_page_dirtied+0x767/0xa00 mm/page-writeback.c:2430
Code: a8 01 00 00 be ff ff ff ff 48 8d 78 70 e8 d1 61 53 07 31 ff 89 c3 89 c6 e8 b6 37 da ff 85 db 0f 85 bc fa ff ff e8 29 30 da ff <0f> 0b e9 b0 fa ff ff e8 1d 30 da ff 48 89 ee 4c 89 ef e8 e2 f1 33
RSP: 0018:ffffc90002327890 EFLAGS: 00010093
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88801160d340 RSI: ffffffff81984567 RDI: 0000000000000003
RBP: ffffea0000502540 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff8198455a R11: 0000000000000000 R12: ffff88814080f010
R13: ffff88814080ee68 R14: ffff8880736b4c98 R15: ffffea0000502548
FS:  00000000030d2940(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fabf3c6edb8 CR3: 0000000028fcd000 CR4: 0000000000350ef0
Call Trace:
 __set_page_dirty+0x7f/0x400 fs/buffer.c:608
 mark_buffer_dirty+0x448/0x5d0 fs/buffer.c:1137
 gfs2_unpin+0x11e/0xc60 fs/gfs2/lops.c:108
 buf_lo_after_commit+0x140/0x210 fs/gfs2/lops.c:740
 lops_after_commit fs/gfs2/lops.h:61 [inline]
 gfs2_log_flush+0x157b/0x29a0 fs/gfs2/log.c:1016
 do_sync+0x582/0xca0 fs/gfs2/quota.c:967
 gfs2_quota_sync+0x2e2/0x660 fs/gfs2/quota.c:1310
 gfs2_sync_fs+0x40/0xb0 fs/gfs2/super.c:760
 __sync_filesystem fs/sync.c:39 [inline]
 sync_filesystem fs/sync.c:64 [inline]
 sync_filesystem+0x105/0x260 fs/sync.c:48
 generic_shutdown_super+0x70/0x370 fs/super.c:448
 kill_block_super+0x97/0xf0 fs/super.c:1393
 gfs2_kill_sb+0x104/0x160 fs/gfs2/ops_fstype.c:1662
 deactivate_locked_super+0x94/0x160 fs/super.c:335
 deactivate_super+0xad/0xd0 fs/super.c:366
 cleanup_mnt+0x3a3/0x530 fs/namespace.c:1118
 task_work_run+0xdd/0x190 kernel/task_work.c:140
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:174 [inline]
 exit_to_user_mode_prepare+0x249/0x250 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:302
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x460c47
Code: 64 89 04 25 d0 02 00 00 58 5f ff d0 48 89 c7 e8 2f be ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffe6cc9d918 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000bb8 RCX: 0000000000460c47
RDX: 00000000004033a8 RSI: 0000000000000002 RDI: 00007ffe6cc9d9c0
RBP: 00000000000577aa R08: 0000000000000000 R09: 0000000000000006
R10: 0000000000000001 R11: 0000000000000246 R12: 00007ffe6cc9ea70
R13: 00000000030d3a60 R14: 0000000000000000 R15: 000000000005744f