gfs2: fsid=syz:syz.0: first mount done, others may mount
gfs2: fsid=syz:syz.0: found 1 quota changes
 slab gfs2_quotad start ffff88805303a690 pointer offset 120 size 272
list_add corruption. prev->next should be next (ffff88801e2b7800), but was ffff88805303a708. (prev=ffff88805303a708).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:34!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 10537 Comm: syz.8.822 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:__list_add_valid_or_report+0x123/0x130 lib/list_debug.c:32
Code: e8 a2 e1 2d fd 43 80 3c 2c 00 74 08 4c 89 f7 e8 33 93 4f fd 49 8b 16 48 c7 c7 40 71 03 8c 48 89 de 4c 89 f1 e8 ce f8 52 fc 90 <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000d7bf958 EFLAGS: 00010246
RAX: 0000000000000075 RBX: ffff88801e2b7800 RCX: 6ca398af7b8c2b00
RDX: ffffc9000b3e1000 RSI: 0000000000007443 RDI: 0000000000007444
RBP: 1ffff11003c56f01 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1c3a6c8 R12: 1ffff1100a6074e1
R13: dffffc0000000000 R14: ffff88805303a708 R15: ffff88805303a708
FS:  00007f32b9bba6c0(0000) GS:ffff888125ae8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000001d000 CR3: 00000000334e0000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __list_add_valid include/linux/list.h:96 [inline]
 __list_add include/linux/list.h:158 [inline]
 list_add_tail include/linux/list.h:191 [inline]
 list_lru_add+0xf2/0x270 mm/list_lru.c:171
 qd_put+0x114/0x190 fs/gfs2/quota.c:342
 gfs2_set_dqblk+0x3d6/0xbb0 fs/gfs2/quota.c:1803
 quota_setquota+0x4b7/0x540 fs/quota/quota.c:310
 __do_sys_quotactl fs/quota/quota.c:961 [inline]
 __se_sys_quotactl+0x279/0x950 fs/quota/quota.c:917
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f32b8d8eba9
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:00007f32b9bba038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007f32b8fd5fa0 RCX: 00007f32b8d8eba9
RDX: 0000000000000000 RSI: 0000200000000000 RDI: ffffffff80000801
RBP: 00007f32b8e11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000100 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f32b8fd6038 R14: 00007f32b8fd5fa0 R15: 00007ffee924bdb8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_add_valid_or_report+0x123/0x130 lib/list_debug.c:32
Code: e8 a2 e1 2d fd 43 80 3c 2c 00 74 08 4c 89 f7 e8 33 93 4f fd 49 8b 16 48 c7 c7 40 71 03 8c 48 89 de 4c 89 f1 e8 ce f8 52 fc 90 <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000d7bf958 EFLAGS: 00010246
RAX: 0000000000000075 RBX: ffff88801e2b7800 RCX: 6ca398af7b8c2b00
RDX: ffffc9000b3e1000 RSI: 0000000000007443 RDI: 0000000000007444
RBP: 1ffff11003c56f01 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1c3a6c8 R12: 1ffff1100a6074e1
R13: dffffc0000000000 R14: ffff88805303a708 R15: ffff88805303a708
FS:  00007f32b9bba6c0(0000) GS:ffff888125ae8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000001d000 CR3: 00000000334e0000 CR4: 00000000003526f0