gfs2: fsid=syz:syz.0: first mount done, others may mount
gfs2: fsid=syz:syz.0: found 1 quota changes
gfs2: fsid=syz:syz.0: fatal assertion failed
------------[ cut here ]------------
kernel BUG at fs/gfs2/quota.c:320!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 9832 Comm: syz.3.848 Not tainted 6.16.0-rc3-syzkaller-00329-gdfba48a70cb6 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__qd_hold fs/gfs2/quota.c:320 [inline]
RIP: 0010:do_qc+0x5c1/0x5e0 fs/gfs2/quota.c:705
Code: 00 00 00 00 00 fc ff df 48 8b 0c 24 80 3c 01 00 74 0a 48 8b 7c 24 10 e8 ad 9d 2d fe 48 8b 44 24 10 48 8b 38 e8 c0 00 34 fd 90 <0f> 0b e8 48 1a ca fd 48 8b 7c 24 10 e8 ae 00 34 fd 90 0f 0b 66 66
RSP: 0018:ffffc90003c6f9c8 EFLAGS: 00010246
RAX: 000000000000002c RBX: 1ffff110060310e0 RCX: 3db0e54d252d0b00
RDX: ffffc9000d8fe000 RSI: 0000000000005a60 RDI: 0000000000005a61
RBP: ffffffffffffffff R08: ffffc90003c6f6e7 R09: 1ffff9200078dedc
R10: dffffc0000000000 R11: fffff5200078dedd R12: ffff888030188690
R13: ffff888030188700 R14: ffff888030188720 R15: 0000000000000000
FS:  00007fecfa8a86c0(0000) GS:ffff888125c50000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f746b8dd368 CR3: 000000007a9d9000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 gfs2_quota_change+0x469/0x800 fs/gfs2/quota.c:1304
 setattr_chown+0x418/0x570 fs/gfs2/inode.c:2058
 gfs2_setattr+0x217/0x3f0 fs/gfs2/inode.c:2110
 notify_change+0xb36/0xe40 fs/attr.c:552
 chown_common+0x40c/0x5c0 fs/open.c:790
 vfs_fchown fs/open.c:858 [inline]
 ksys_fchown+0xea/0x160 fs/open.c:870
 __do_sys_fchown fs/open.c:875 [inline]
 __se_sys_fchown fs/open.c:873 [inline]
 __x64_sys_fchown+0x7a/0x90 fs/open.c:873
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fecf998e929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fecfa8a8038 EFLAGS: 00000246 ORIG_RAX: 000000000000005d
RAX: ffffffffffffffda RBX: 00007fecf9bb5fa0 RCX: 00007fecf998e929
RDX: 000000000000000a RSI: 000000003a736e6f RDI: 0000000000000004
RBP: 00007fecf9a10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fecf9bb5fa0 R15: 00007ffd5c7ba1f8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__qd_hold fs/gfs2/quota.c:320 [inline]
RIP: 0010:do_qc+0x5c1/0x5e0 fs/gfs2/quota.c:705
Code: 00 00 00 00 00 fc ff df 48 8b 0c 24 80 3c 01 00 74 0a 48 8b 7c 24 10 e8 ad 9d 2d fe 48 8b 44 24 10 48 8b 38 e8 c0 00 34 fd 90 <0f> 0b e8 48 1a ca fd 48 8b 7c 24 10 e8 ae 00 34 fd 90 0f 0b 66 66
RSP: 0018:ffffc90003c6f9c8 EFLAGS: 00010246
RAX: 000000000000002c RBX: 1ffff110060310e0 RCX: 3db0e54d252d0b00
RDX: ffffc9000d8fe000 RSI: 0000000000005a60 RDI: 0000000000005a61
RBP: ffffffffffffffff R08: ffffc90003c6f6e7 R09: 1ffff9200078dedc
R10: dffffc0000000000 R11: fffff5200078dedd R12: ffff888030188690
R13: ffff888030188700 R14: ffff888030188720 R15: 0000000000000000
FS:  00007fecfa8a86c0(0000) GS:ffff888125c50000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f746b8dd368 CR3: 000000007a9d9000 CR4: 0000000000350ef0