------------[ cut here ]------------
kernel BUG at fs/gfs2/quota.c:331!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 5820 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:qd_put+0x1a2/0x1b0 fs/gfs2/quota.c:331
Code: 21 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 69 69 21 fe e9 62 ff ff ff e8 ef 84 ba 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:ffffc900041d79c8 EFLAGS: 00010293
RAX: ffffffff840694f1 RBX: ffff8880434c03f0 RCX: ffff888036b7dac0
RDX: 0000000000000000 RSI: 00000000ffffff80 RDI: 0000000000000000
RBP: 00000000ffffff80 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200083af20 R12: ffff8880434c0460
R13: ffff888053677000 R14: ffff8880434c0420 R15: 1ffff1100869808c
FS:  00005555827a5500(0000) GS:ffff888125cf2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ce20fb5a38 CR3: 000000006879a000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 gfs2_quota_sync+0x3c4/0x460 fs/gfs2/quota.c:1362
 gfs2_sync_fs+0x4c/0xb0 fs/gfs2/super.c:658
 sync_filesystem+0xee/0x230 fs/sync.c:56
 generic_shutdown_super+0x6f/0x2d0 fs/super.c:624
 kill_block_super+0x44/0x90 fs/super.c:1725
 deactivate_locked_super+0xbc/0x130 fs/super.c:476
 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1312
 task_work_run+0x1d4/0x260 kernel/task_work.c:233
 get_signal+0x11ec/0x1340 kernel/signal.c:2807
 arch_do_signal_or_restart+0x9a/0x7a0 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:41 [inline]
 exit_to_user_mode_loop+0x87/0x4e0 kernel/entry/common.c:75
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
 do_syscall_64+0x2c1/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd041390a77
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffe371a7d78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fd041413d7d RCX: 00007fd041390a77
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe371a7e30
RBP: 00007ffe371a7e30 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffe371a8ec0
R13: 00007fd041413d7d R14: 000000000002ee47 R15: 00007ffe371a8f00
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:qd_put+0x1a2/0x1b0 fs/gfs2/quota.c:331
Code: 21 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 69 69 21 fe e9 62 ff ff ff e8 ef 84 ba 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:ffffc900041d79c8 EFLAGS: 00010293
RAX: ffffffff840694f1 RBX: ffff8880434c03f0 RCX: ffff888036b7dac0
RDX: 0000000000000000 RSI: 00000000ffffff80 RDI: 0000000000000000
RBP: 00000000ffffff80 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200083af20 R12: ffff8880434c0460
R13: ffff888053677000 R14: ffff8880434c0420 R15: 1ffff1100869808c
FS:  00005555827a5500(0000) GS:ffff888125cf2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ce20fb5a38 CR3: 000000006879a000 CR4: 00000000003526f0