gfs2: fsid=syz:syz.0: jid=0: Looking at journal...
gfs2: fsid=syz:syz.0: jid=0: Done
gfs2: fsid=syz:syz.0: first mount done, others may mount
gfs2: fsid=syz:syz.0: found 1 quota changes
------------[ cut here ]------------
WARNING: CPU: 1 PID: 7965 at include/linux/backing-dev.h:335 inode_to_wb include/linux/backing-dev.h:335 [inline]
WARNING: CPU: 1 PID: 7965 at include/linux/backing-dev.h:335 account_page_dirtied+0x8df/0xbb0 mm/page-writeback.c:2437
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 7965 Comm: syz-executor320 Not tainted 4.14.304-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x44 kernel/panic.c:547
 report_bug+0x208/0x250 lib/bug.c:183
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967
RIP: 0010:inode_to_wb include/linux/backing-dev.h:335 [inline]
RIP: 0010:account_page_dirtied+0x8df/0xbb0 mm/page-writeback.c:2437
RSP: 0018:ffff8880941cf778 EFLAGS: 00010097
RAX: ffff888096968640 RBX: ffff8880af3d6380 RCX: 1ffffffff127a700
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000082
RBP: ffff8880b1f3f4a8 R08: ffffffff8b9a7930 R09: 00000000000c0238
R10: ffff888096968f68 R11: ffff888096968640 R12: ffffea000292e100
R13: ffff8880b1f3f318 R14: ffff8880b1f3f318 R15: ffffea000292e120
 __set_page_dirty+0x77/0x2a0 fs/buffer.c:634
 mark_buffer_dirty+0x307/0x480 fs/buffer.c:1173
 gfs2_unpin+0xc7/0xeb0 fs/gfs2/lops.c:107
 buf_lo_after_commit+0x12d/0x1f0 fs/gfs2/lops.c:510
 lops_after_commit fs/gfs2/lops.h:64 [inline]
 gfs2_log_flush+0x7fc/0x1ad0 fs/gfs2/log.c:759
 do_sync+0x4bb/0xba0 fs/gfs2/quota.c:958
 gfs2_quota_sync+0x4f1/0x690 fs/gfs2/quota.c:1299
 gfs2_sync_fs+0x40/0xa0 fs/gfs2/super.c:947
 __sync_filesystem fs/sync.c:39 [inline]
 sync_filesystem fs/sync.c:64 [inline]
 sync_filesystem+0xe2/0x230 fs/sync.c:48
 generic_shutdown_super+0x70/0x370 fs/super.c:432
 kill_block_super+0x95/0xe0 fs/super.c:1161
 gfs2_kill_sb+0x12c/0x1a0 fs/gfs2/ops_fstype.c:1414
 deactivate_locked_super+0x6c/0xd0 fs/super.c:319
 deactivate_super+0x7f/0xa0 fs/super.c:350
 cleanup_mnt+0x186/0x2c0 fs/namespace.c:1183
 task_work_run+0x11f/0x190 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0xa44/0x2850 kernel/exit.c:868
 do_group_exit+0x100/0x2e0 kernel/exit.c:965
 SYSC_exit_group kernel/exit.c:976 [inline]
 SyS_exit_group+0x19/0x20 kernel/exit.c:974
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7fbf5f3109c9
RSP: 002b:00007fff9b181a48 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fbf5f3a5330 RCX: 00007fbf5f3109c9
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 000000000001f6db
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbf5f3a5330
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
Kernel Offset: disabled
Rebooting in 86400 seconds..