loop0: detected capacity change from 0 to 32768
gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms
gfs2: fsid=syz:syz.0: first mount done, others may mount
gfs2: fsid=syz:syz.0: found 1 quota changes
loop0: detected capacity change from 32768 to 32767
BIDI support in bsg has been removed.
gfs2: fsid=syz:syz.0: fatal: invalid metadata block - bh = 2340 (bad magic number), function = gfs2_meta_buffer, file = fs/gfs2/meta_io.c, line = 461
CPU: 0 UID: 0 PID: 5321 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_metatype_check_i fs/gfs2/util.h:116 [inline]
 gfs2_meta_buffer+0x225/0x2e0 fs/gfs2/meta_io.c:461
 gfs2_meta_inode_buffer fs/gfs2/meta_io.h:69 [inline]
 gfs2_inode_refresh fs/gfs2/glops.c:487 [inline]
 inode_go_instantiate+0xea/0x12a0 fs/gfs2/glops.c:512
 gfs2_instantiate+0x168/0x220 fs/gfs2/glock.c:442
 gfs2_glock_holder_ready fs/gfs2/glock.c:1250 [inline]
 gfs2_glock_wait+0x1d4/0x2a0 fs/gfs2/glock.c:1270
 gfs2_glock_nq_init fs/gfs2/glock.h:253 [inline]
 do_sync+0x49a/0xcb0 fs/gfs2/quota.c:924
 gfs2_quota_sync+0x370/0x470 fs/gfs2/quota.c:1358
 gfs2_sync_fs+0x4c/0xb0 fs/gfs2/super.c:661
 sync_filesystem+0xee/0x230 fs/sync.c:56
 gfs2_reconfigure+0xbb/0xb20 fs/gfs2/ops_fstype.c:1554
 reconfigure_super+0x227/0x8a0 fs/super.c:1080
 do_remount fs/namespace.c:3400 [inline]
 path_mount+0xdc5/0x10e0 fs/namespace.c:4146
 do_mount fs/namespace.c:4167 [inline]
 __do_sys_mount fs/namespace.c:4383 [inline]
 __se_sys_mount+0x31d/0x420 fs/namespace.c:4360
 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: 0033:0x7fa460d9ce59
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:00007fa461c99fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fa461015fa0 RCX: 00007fa460d9ce59
RDX: 0000000000000000 RSI: 0000200000000100 RDI: 0000000000000000
RBP: 00007fa460e32d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000021 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa461016038 R14: 00007fa461015fa0 R15: 00007ffc078458b8
 </TASK>
gfs2: fsid=syz:syz.0: about to withdraw this file system
------------[ cut here ]------------
kernel BUG at fs/gfs2/quota.c:1521!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5321 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:gfs2_quota_cleanup+0x75e/0x760 fs/gfs2/quota.c:1520
Code: ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 5b fd ff ff 4c 89 f7 e8 52 35 0b fe e9 4e fd ff ff e8 08 d7 83 07 e8 43 67 9e fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6
RSP: 0018:ffffc9000e3a7a40 EFLAGS: 00010283
RAX: ffffffff84276ced RBX: 0000000000000002 RCX: 0000000000100000
RDX: ffffc9000ec9a000 RSI: 000000000002c1cf RDI: 000000000002c1d0
RBP: ffffc9000e3a7b50 R08: ffff8880124080af R09: 1ffff11002481015
R10: dffffc0000000000 R11: ffffed1002481016 R12: 1ffff92001c74f4c
R13: ffff88801f408e00 R14: dffffc0000000000 R15: 0000000000000000
FS:  00007fa461c9a6c0(0000) GS:ffff88808c87c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb62685c000 CR3: 0000000012107000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 gfs2_make_fs_ro+0x2a0/0x320 fs/gfs2/super.c:568
 gfs2_reconfigure+0x6a5/0xb20 fs/gfs2/ops_fstype.c:1594
 reconfigure_super+0x227/0x8a0 fs/super.c:1080
 do_remount fs/namespace.c:3400 [inline]
 path_mount+0xdc5/0x10e0 fs/namespace.c:4146
 do_mount fs/namespace.c:4167 [inline]
 __do_sys_mount fs/namespace.c:4383 [inline]
 __se_sys_mount+0x31d/0x420 fs/namespace.c:4360
 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: 0033:0x7fa460d9ce59
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:00007fa461c99fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fa461015fa0 RCX: 00007fa460d9ce59
RDX: 0000000000000000 RSI: 0000200000000100 RDI: 0000000000000000
RBP: 00007fa460e32d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000021 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa461016038 R14: 00007fa461015fa0 R15: 00007ffc078458b8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:gfs2_quota_cleanup+0x75e/0x760 fs/gfs2/quota.c:1520
Code: ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 5b fd ff ff 4c 89 f7 e8 52 35 0b fe e9 4e fd ff ff e8 08 d7 83 07 e8 43 67 9e fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6
RSP: 0018:ffffc9000e3a7a40 EFLAGS: 00010283
RAX: ffffffff84276ced RBX: 0000000000000002 RCX: 0000000000100000
RDX: ffffc9000ec9a000 RSI: 000000000002c1cf RDI: 000000000002c1d0
RBP: ffffc9000e3a7b50 R08: ffff8880124080af R09: 1ffff11002481015
R10: dffffc0000000000 R11: ffffed1002481016 R12: 1ffff92001c74f4c
R13: ffff88801f408e00 R14: dffffc0000000000 R15: 0000000000000000
FS:  00007fa461c9a6c0(0000) GS:ffff88808c87c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb626882000 CR3: 0000000012107000 CR4: 0000000000352ef0