list_add corruption. next->prev should be prev (ffffe8ffffd1abd0), but was ffff888031f07800. (next=ffff888030b99000).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:31!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 1 UID: 0 PID: 12 Comm: kworker/u8:1 Not tainted 6.12.0-rc5-syzkaller-00330-ga33ab3f94f51 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: zswap1 compact_page_work
RIP: 0010:__list_add_valid_or_report+0xd6/0xf0 lib/list_debug.c:29
Code: e8 7f 7a 00 07 90 0f 0b 48 c7 c7 c0 09 61 8c e8 70 7a 00 07 90 0f 0b 48 c7 c7 20 0a 61 8c 4c 89 e6 4c 89 f1 e8 5b 7a 00 07 90 <0f> 0b 48 c7 c7 a0 0a 61 8c 4c 89 f6 4c 89 e1 e8 46 7a 00 07 90 0f
RSP: 0018:ffffc90000117ad0 EFLAGS: 00010246
RAX: 0000000000000075 RBX: ffff888030b99008 RCX: 1dcdaa32be153c00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffe8ffffd1abd0 R08: ffffffff8174a0cc R09: 1ffffffff2859b25
R10: dffffc0000000000 R11: fffffbfff2859b26 R12: ffffe8ffffd1abd0
R13: dffffc0000000000 R14: ffff888030b99000 R15: ffff888031888000
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8e53909178 CR3: 000000006b942000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_add_valid include/linux/list.h:88 [inline]
 __list_add include/linux/list.h:150 [inline]
 list_add include/linux/list.h:169 [inline]
 add_to_unbuddied+0x2e4/0x4d0 mm/z3fold.c:550
 do_compact_page+0x924/0xc50 mm/z3fold.c:772
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_add_valid_or_report+0xd6/0xf0 lib/list_debug.c:29
Code: e8 7f 7a 00 07 90 0f 0b 48 c7 c7 c0 09 61 8c e8 70 7a 00 07 90 0f 0b 48 c7 c7 20 0a 61 8c 4c 89 e6 4c 89 f1 e8 5b 7a 00 07 90 <0f> 0b 48 c7 c7 a0 0a 61 8c 4c 89 f6 4c 89 e1 e8 46 7a 00 07 90 0f
RSP: 0018:ffffc90000117ad0 EFLAGS: 00010246
RAX: 0000000000000075 RBX: ffff888030b99008 RCX: 1dcdaa32be153c00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffe8ffffd1abd0 R08: ffffffff8174a0cc R09: 1ffffffff2859b25
R10: dffffc0000000000 R11: fffffbfff2859b26 R12: ffffe8ffffd1abd0
R13: dffffc0000000000 R14: ffff888030b99000 R15: ffff888031888000
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8e53909178 CR3: 000000006b942000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400