list_add corruption. next->prev should be prev (ffffe8fefc8390d0), but was ffffffff84683cb0. (next=ffff88802acbb900).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:29!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 2 UID: 0 PID: 11 Comm: kworker/u32:0 Not tainted 6.13.0-rc3-syzkaller-00044-gaef25be35d23 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: zswap1 compact_page_work
RIP: 0010:__list_add_valid_or_report+0xa9/0x100 lib/list_debug.c:29
Code: e9 d1 8b e8 09 14 d4 fc 90 0f 0b 48 c7 c7 40 ea d1 8b e8 fa 13 d4 fc 90 0f 0b 48 89 d9 48 c7 c7 a0 ea d1 8b e8 e8 13 d4 fc 90 <0f> 0b 48 89 f1 48 c7 c7 20 eb d1 8b 48 89 de e8 d3 13 d4 fc 90 0f
RSP: 0018:ffffc900000e7bf8 EFLAGS: 00010286
RAX: 0000000000000075 RBX: ffff88802acbb900 RCX: ffffffff81795d09
RDX: 0000000000000000 RSI: ffffffff817a06d6 RDI: 0000000000000005
RBP: ffff888012973000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000002 R11: 0000000000000004 R12: ffff88802acbb900
R13: ffff8880129730b0 R14: ffffea00004a5cc0 R15: ffff888012973008
FS:  0000000000000000(0000) GS:ffff88806a800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f053f570630 CR3: 0000000020bd4000 CR4: 0000000000352ef0
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 mm/z3fold.c:550 [inline]
 do_compact_page+0x10f2/0x27b0 mm/z3fold.c:772
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 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+0xa9/0x100 lib/list_debug.c:29
Code: e9 d1 8b e8 09 14 d4 fc 90 0f 0b 48 c7 c7 40 ea d1 8b e8 fa 13 d4 fc 90 0f 0b 48 89 d9 48 c7 c7 a0 ea d1 8b e8 e8 13 d4 fc 90 <0f> 0b 48 89 f1 48 c7 c7 20 eb d1 8b 48 89 de e8 d3 13 d4 fc 90 0f
RSP: 0018:ffffc900000e7bf8 EFLAGS: 00010286
RAX: 0000000000000075 RBX: ffff88802acbb900 RCX: ffffffff81795d09
RDX: 0000000000000000 RSI: ffffffff817a06d6 RDI: 0000000000000005
RBP: ffff888012973000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000002 R11: 0000000000000004 R12: ffff88802acbb900
R13: ffff8880129730b0 R14: ffffea00004a5cc0 R15: ffff888012973008
FS:  0000000000000000(0000) GS:ffff88806a800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f053f570630 CR3: 0000000020bd4000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400