------------[ cut here ]------------
WARNING: CPU: 1 PID: 9348 at include/linux/backing-dev.h:283 inode_to_wb include/linux/backing-dev.h:283 [inline]
WARNING: CPU: 1 PID: 9348 at include/linux/backing-dev.h:283 account_page_dirtied+0x763/0x9d0 mm/page-writeback.c:2430
Modules linked in:
CPU: 1 PID: 9348 Comm: syz-executor.1 Not tainted 5.10.0-rc6-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
RIP: 0010:inode_to_wb include/linux/backing-dev.h:283 [inline]
RIP: 0010:account_page_dirtied+0x763/0x9d0 mm/page-writeback.c:2430
Code: a8 01 00 00 be ff ff ff ff 48 8d 78 70 e8 f5 66 50 07 31 ff 89 c3 89 c6 e8 ea cb da ff 85 db 0f 85 be fa ff ff e8 8d d3 da ff <0f> 0b e9 b2 fa ff ff e8 81 d3 da ff 48 89 ee 4c 89 ef e8 06 40 33
RSP: 0018:ffffc900014e7860 EFLAGS: 00010093
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff819530e6
RDX: ffff88801a8fc300 RSI: ffffffff819530f3 RDI: 0000000000000005
RBP: ffffea0001ae6800 R08: 0000000000000000 R09: ffffffff8cecaf4f
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888016791080
R13: ffff888016790ed8 R14: ffff888070c90c98 R15: ffffea0001ae6808
FS:  0000000000000000(0000) GS:ffff88802cd00000(0063) knlGS:000000000a26a900
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000000625208 CR3: 00000000657fd000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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:762
 __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:1446
 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:151
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:164 [inline]
 exit_to_user_mode_prepare+0x17e/0x1a0 kernel/entry/common.c:191
 syscall_exit_to_user_mode+0x38/0x260 kernel/entry/common.c:266
 __do_fast_syscall_32+0x62/0x80 arch/x86/entry/common.c:138
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:160
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7f38549
Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000ff88078c EFLAGS: 00000292 ORIG_RAX: 0000000000000034
RAX: 0000000000000000 RBX: 00000000ff880830 RCX: 0000000000000002
RDX: 000000000815e000 RSI: 000000000a26b2a4 RDI: 00000000ff880830
RBP: 00000000080da599 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000