gfs2: fsid=syz:syz.0: quota exceeded for group 0
gfs2: fsid=syz:syz.0: fatal: I/O error - block = 9376, function = gfs2_meta_read, file = fs/gfs2/meta_io.c, line = 305
CPU: 0 UID: 60928 PID: 5323 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 gfs2_withdraw+0xc3/0x1b0 fs/gfs2/util.c:249
 gfs2_meta_read+0x891/0x8d0 fs/gfs2/meta_io.c:305
 gfs2_meta_buffer+0x10f/0x2e0 fs/gfs2/meta_io.c:460
 gfs2_meta_inode_buffer fs/gfs2/meta_io.h:69 [inline]
 gfs2_dirty_inode+0x3f6/0x5f0 fs/gfs2/super.c:518
 __mark_inode_dirty+0x3a4/0x13b0 fs/fs-writeback.c:2621
 mark_inode_dirty include/linux/fs.h:2220 [inline]
 gfs2_adjust_quota+0x66d/0x850 fs/gfs2/quota.c:886
 do_sync+0x872/0xcb0 fs/gfs2/quota.c:962
 gfs2_quota_unlock+0x707/0x8b0 fs/gfs2/quota.c:1187
 gfs2_quota_lock_check fs/gfs2/quota.h:57 [inline]
 gfs2_iomap_begin_write fs/gfs2/bmap.c:1036 [inline]
 gfs2_iomap_begin+0xafc/0x12c0 fs/gfs2/bmap.c:1133
 iomap_iter+0x600/0xf90 fs/iomap/iter.c:110
 iomap_file_buffered_write+0x92f/0xb30 fs/iomap/buffered-io.c:1224
 gfs2_file_buffered_write+0x4eb/0x870 fs/gfs2/file.c:1061
 gfs2_file_write_iter+0x976/0x1130 fs/gfs2/file.c:1166
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61d/0xb90 fs/read_write.c:688
 ksys_write+0x150/0x270 fs/read_write.c:740
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f61b139c819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f61b21c6fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f61b1616090 RCX: 00007f61b139c819
RDX: 0000000000001006 RSI: 00002000000005c0 RDI: 0000000000000005
RBP: 00007f61b1432c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f61b1616128 R14: 00007f61b1616090 R15: 00007fffa4ababf8
 </TASK>
gfs2: fsid=syz:syz.0: about to withdraw this file system
gfs2: fsid=syz:syz.0: GFS2:adding buf while withdrawn! 0x23ff
------------[ cut here ]------------
kernel BUG at fs/gfs2/quota.c:331!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 60928 PID: 5323 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:qd_put+0x1a2/0x1b0 fs/gfs2/quota.c:331
Code: 0c fe e9 da fe ff ff 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 6f ff ff ff 48 89 ef e8 09 68 0c fe e9 62 ff ff ff e8 ff 45 a0 fd 90 <0f> 0b 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90005c473c8 EFLAGS: 00010283
RAX: ffffffff8424df11 RBX: ffff8880489003f0 RCX: 0000000000100000
RDX: ffffc90020802000 RSI: 000000000001b09d RDI: 000000000001b09e
RBP: 00000000ffffff80 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000b88e60 R12: ffff888048900460
R13: dffffc0000000000 R14: ffff888048900420 R15: 1ffff1100912008c
FS:  00007f61b21c76c0(0000) GS:ffff88808c820000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558745570168 CR3: 0000000041ef3000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 gfs2_quota_unhold+0x1c9/0x690 fs/gfs2/quota.c:654
 gfs2_quota_unlock+0x7cc/0x8b0 fs/gfs2/quota.c:1192
 gfs2_quota_lock_check fs/gfs2/quota.h:57 [inline]
 gfs2_iomap_begin_write fs/gfs2/bmap.c:1036 [inline]
 gfs2_iomap_begin+0xafc/0x12c0 fs/gfs2/bmap.c:1133
 iomap_iter+0x600/0xf90 fs/iomap/iter.c:110
 iomap_file_buffered_write+0x92f/0xb30 fs/iomap/buffered-io.c:1224
 gfs2_file_buffered_write+0x4eb/0x870 fs/gfs2/file.c:1061
 gfs2_file_write_iter+0x976/0x1130 fs/gfs2/file.c:1166
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61d/0xb90 fs/read_write.c:688
 ksys_write+0x150/0x270 fs/read_write.c:740
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f61b139c819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f61b21c6fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f61b1616090 RCX: 00007f61b139c819
RDX: 0000000000001006 RSI: 00002000000005c0 RDI: 0000000000000005
RBP: 00007f61b1432c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f61b1616128 R14: 00007f61b1616090 R15: 00007fffa4ababf8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:qd_put+0x1a2/0x1b0 fs/gfs2/quota.c:331
Code: 0c fe e9 da fe ff ff 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 6f ff ff ff 48 89 ef e8 09 68 0c fe e9 62 ff ff ff e8 ff 45 a0 fd 90 <0f> 0b 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90005c473c8 EFLAGS: 00010283
RAX: ffffffff8424df11 RBX: ffff8880489003f0 RCX: 0000000000100000
RDX: ffffc90020802000 RSI: 000000000001b09d RDI: 000000000001b09e
RBP: 00000000ffffff80 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000b88e60 R12: ffff888048900460
R13: dffffc0000000000 R14: ffff888048900420 R15: 1ffff1100912008c
FS:  00007f61b21c76c0(0000) GS:ffff88808c820000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558745570168 CR3: 0000000041ef3000 CR4: 0000000000352ef0