R10: 000000000126a4b5 R11: 0000000000000246 R12: 0000200000000340
R13: 00007fb420430ea0 R14: 0000000000000000 R15: 0000200000004140
 </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 PTI
CPU: 0 UID: 0 PID: 6371 Comm: syz.0.94 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
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 82 98 0c fe e9 4e fd ff ff e8 68 51 8c 07 e8 d3 2f a3 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:ffffc90003297a40 EFLAGS: 00010287
RAX: ffffffff8422f1bd RBX: 0000000000000002 RCX: 0000000000080000
RDX: ffffc900049ba000 RSI: 000000000007ecec RDI: 000000000007eced
RBP: ffffc90003297b50 R08: ffff88807fb900af R09: 1ffff1100ff72015
R10: dffffc0000000000 R11: ffffed100ff72016 R12: 1ffff92000652f4c
R13: ffff888059d62400 R14: dffffc0000000000 R15: 0000000000000000
FS:  00007fb4204316c0(0000) GS:ffff88812525c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7afa585ff8 CR3: 00000000121dc000 CR4: 00000000003526f0
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:4399 [inline]
 __se_sys_mount+0x31d/0x420 fs/namespace.c:4376
 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: 0033:0x7fb41f59da8a
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007fb420430e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fb420430ee0 RCX: 00007fb41f59da8a
RDX: 00002000000003c0 RSI: 0000200000000340 RDI: 0000000000000000
RBP: 00002000000003c0 R08: 00007fb420430ee0 R09: 000000000126a4b5
R10: 000000000126a4b5 R11: 0000000000000246 R12: 0000200000000340
R13: 00007fb420430ea0 R14: 0000000000000000 R15: 0000200000004140
 </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 82 98 0c fe e9 4e fd ff ff e8 68 51 8c 07 e8 d3 2f a3 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:ffffc90003297a40 EFLAGS: 00010287
RAX: ffffffff8422f1bd RBX: 0000000000000002 RCX: 0000000000080000
RDX: ffffc900049ba000 RSI: 000000000007ecec RDI: 000000000007eced
RBP: ffffc90003297b50 R08: ffff88807fb900af R09: 1ffff1100ff72015
R10: dffffc0000000000 R11: ffffed100ff72016 R12: 1ffff92000652f4c
R13: ffff888059d62400 R14: dffffc0000000000 R15: 0000000000000000
FS:  00007fb4204316c0(0000) GS:ffff88812525c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7afa585ff8 CR3: 00000000121dc000 CR4: 00000000003526f0