syzbot

gfs2: fsid=syz:syz.0: found 1 quota changes
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WARNING: CPU: 0 PID: 4997 at include/linux/backing-dev.h:253 inode_to_wb include/linux/backing-dev.h:253 [inline]
WARNING: CPU: 0 PID: 4997 at include/linux/backing-dev.h:253 folio_account_dirtied mm/page-writeback.c:2616 [inline]
WARNING: CPU: 0 PID: 4997 at include/linux/backing-dev.h:253 __folio_mark_dirty+0xace/0xdf0 mm/page-writeback.c:2667
Modules linked in:
CPU: 0 PID: 4997 Comm: syz-executor412 Not tainted 6.4.0-rc4-syzkaller-00031-g8b817fded42d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:inode_to_wb include/linux/backing-dev.h:253 [inline]
RIP: 0010:folio_account_dirtied mm/page-writeback.c:2616 [inline]
RIP: 0010:__folio_mark_dirty+0xace/0xdf0 mm/page-writeback.c:2667
Code: ff ff ff 48 8d 78 70 e8 c0 3e 5c 08 31 ff 89 c6 89 44 24 08 e8 d3 d3 d0 ff 8b 44 24 08 85 c0 0f 85 bc f9 ff ff e8 a2 d7 d0 ff <0f> 0b e9 b0 f9 ff ff e8 96 d7 d0 ff 0f 0b e9 d9 f5 ff ff 48 89 04
RSP: 0018:ffffc90003a7f798 EFLAGS: 00010093
RAX: 0000000000000000 RBX: ffff88801a9147c0 RCX: 0000000000000000
RDX: ffff888026fcd940 RSI: ffffffff81b36c7e RDI: 0000000000000005
RBP: ffffea0001c59700 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000005 R12: 0000000000000293
R13: ffff88807a3f8c50 R14: 0000000000000001 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f04c2daa000 CR3: 00000000779a3000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 mark_buffer_dirty+0x31e/0x3e0 fs/buffer.c:1154
 gfs2_unpin+0x109/0xcf0 fs/gfs2/lops.c:111
 buf_lo_after_commit+0x144/0x210 fs/gfs2/lops.c:747
 lops_after_commit fs/gfs2/lops.h:49 [inline]
 gfs2_log_flush+0x140f/0x2900 fs/gfs2/log.c:1116
 do_sync+0x5ad/0xcf0 fs/gfs2/quota.c:975
 gfs2_quota_sync+0x2e6/0x660 fs/gfs2/quota.c:1318
 gfs2_sync_fs+0x44/0xb0 fs/gfs2/super.c:665
 sync_filesystem.part.0+0x75/0x1d0 fs/sync.c:56
 sync_filesystem+0x8f/0xc0 fs/sync.c:43
 generic_shutdown_super+0x74/0x480 fs/super.c:473
 kill_block_super+0xa1/0x100 fs/super.c:1407
 gfs2_kill_sb+0x378/0x430 fs/gfs2/ops_fstype.c:1804
 deactivate_locked_super+0x98/0x160 fs/super.c:331
 deactivate_super+0xb1/0xd0 fs/super.c:362
 cleanup_mnt+0x2ae/0x3d0 fs/namespace.c:1177
 task_work_run+0x16f/0x270 kernel/task_work.c:179
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xad3/0x2960 kernel/exit.c:871
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1021
 __do_sys_exit_group kernel/exit.c:1032 [inline]
 __se_sys_exit_group kernel/exit.c:1030 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1030
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa161943999
Code: Unable to access opcode bytes at 0x7fa16194396f.
RSP: 002b:00007ffcf61361d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fa1619cc330 RCX: 00007fa161943999
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 0000000000013523
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa1619cc330
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
 </TASK>