R13: 00007f8152213d7d R14: 00000000000b03ba R15: 00007ffe40584eb0
 </TASK>
gfs2: fsid=syz:syz.0: about to withdraw this file system
 slab gfs2_quotad start ffff888053b20930 pointer offset 120 size 272
list_add corruption. prev->next should be next (ffff888140eb5400), but was ffff888053b209a8. (prev=ffff888053b209a8).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:32!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5823 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:__list_add_valid_or_report+0x12b/0x190 lib/list_debug.c:32
Code: 00 00 00 00 fc ff df 48 89 f2 48 c1 ea 03 80 3c 02 00 75 5a 48 8b 16 48 89 f1 48 c7 c7 40 aa f2 8b 48 89 ee e8 26 73 e9 fc 90 <0f> 0b 48 89 f2 48 89 e9 4c 89 e6 48 c7 c7 c0 aa f2 8b e8 0e 73 e9
RSP: 0018:ffffc9000400fb58 EFLAGS: 00010282
RAX: 0000000000000075 RBX: ffff888053b209a8 RCX: ffffffff819c7d55
RDX: 0000000000000000 RSI: ffffffff819cf939 RDI: 0000000000000005
RBP: ffff888140eb5400 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000002 R11: ffff8880287da9b0 R12: ffff888053b209a8
R13: ffff888140eb5408 R14: ffff888140eb5400 R15: ffff888140eb5418
FS:  000055557bac0500(0000) GS:ffff8881248fd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000003af030 CR3: 000000005c0c8000 CR4: 0000000000350ef0
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+0xf6/0x2e0 mm/list_lru.c:171
 list_lru_add_obj+0x1ad/0x320 mm/list_lru.c:193
 qd_put+0x119/0x190 fs/gfs2/quota.c:342
 gfs2_quota_sync+0x358/0x570 fs/gfs2/quota.c:1361
 gfs2_sync_fs+0x44/0xb0 fs/gfs2/super.c:658
 sync_filesystem fs/sync.c:56 [inline]
 sync_filesystem+0x111/0x290 fs/sync.c:30
 generic_shutdown_super+0x74/0x390 fs/super.c:622
 kill_block_super+0x3b/0x90 fs/super.c:1722
 gfs2_kill_sb+0x4ab/0x590 fs/gfs2/ops_fstype.c:1797
 deactivate_locked_super+0xc1/0x1a0 fs/super.c:474
 deactivate_super fs/super.c:507 [inline]
 deactivate_super+0xde/0x100 fs/super.c:503
 cleanup_mnt+0x225/0x450 fs/namespace.c:1318
 task_work_run+0x150/0x240 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:44 [inline]
 exit_to_user_mode_loop+0xfb/0x540 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+0x4ee/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8152190a77
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:00007ffe40583d28 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f8152213d7d RCX: 00007f8152190a77
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe40583de0
RBP: 00007ffe40583de0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffe40584e70
R13: 00007f8152213d7d R14: 00000000000b03ba R15: 00007ffe40584eb0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_add_valid_or_report+0x12b/0x190 lib/list_debug.c:32
Code: 00 00 00 00 fc ff df 48 89 f2 48 c1 ea 03 80 3c 02 00 75 5a 48 8b 16 48 89 f1 48 c7 c7 40 aa f2 8b 48 89 ee e8 26 73 e9 fc 90 <0f> 0b 48 89 f2 48 89 e9 4c 89 e6 48 c7 c7 c0 aa f2 8b e8 0e 73 e9
RSP: 0018:ffffc9000400fb58 EFLAGS: 00010282
RAX: 0000000000000075 RBX: ffff888053b209a8 RCX: ffffffff819c7d55
RDX: 0000000000000000 RSI: ffffffff819cf939 RDI: 0000000000000005
RBP: ffff888140eb5400 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000002 R11: ffff8880287da9b0 R12: ffff888053b209a8
R13: ffff888140eb5408 R14: ffff888140eb5400 R15: ffff888140eb5418
FS:  000055557bac0500(0000) GS:ffff8881248fd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000003af030 CR3: 000000005c0c8000 CR4: 0000000000350ef0