slab kmalloc-96 start ffff888035a80200 pointer offset 0 size 96
list_add corruption. next->prev should be prev (ffffe8ffffc212f0), but was ffffffff848d30c0. (next=ffff888035a80200).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:29!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5980 Comm: kworker/u8:12 Not tainted 6.14.0-rc6-syzkaller-00016-g0fed89a961ea #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: zswap1 compact_page_work
RIP: 0010:__list_add_valid_or_report+0xec/0x190 lib/list_debug.c:29
Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 a5 00 00 00 48 8b 55 08 48 89 e9 48 c7 c7 a0 6b d3 8b e8 55 5f cf fc 90 <0f> 0b 48 89 f7 48 89 34 24 e8 46 cb 31 fd 48 8b 34 24 48 b8 00 00
RSP: 0018:ffffc90004be7b88 EFLAGS: 00010282
RAX: 0000000000000075 RBX: ffff888029a20000 RCX: ffffffff819955b9
RDX: 0000000000000000 RSI: ffffffff8199b92e RDI: 0000000000000005
RBP: ffff888035a80200 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000001 R12: ffff888029a20000
R13: ffff888035a80208 R14: ffffea0000a68800 R15: ffff888029a20008
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5353a1af98 CR3: 000000003082c000 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 mm/z3fold.c:550 [inline]
 do_compact_page+0x10f2/0x27b0 mm/z3fold.c:772
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3400
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 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+0xec/0x190 lib/list_debug.c:29
Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 a5 00 00 00 48 8b 55 08 48 89 e9 48 c7 c7 a0 6b d3 8b e8 55 5f cf fc 90 <0f> 0b 48 89 f7 48 89 34 24 e8 46 cb 31 fd 48 8b 34 24 48 b8 00 00
RSP: 0018:ffffc90004be7b88 EFLAGS: 00010282
RAX: 0000000000000075 RBX: ffff888029a20000 RCX: ffffffff819955b9
RDX: 0000000000000000 RSI: ffffffff8199b92e RDI: 0000000000000005
RBP: ffff888035a80200 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000001 R12: ffff888029a20000
R13: ffff888035a80208 R14: ffffea0000a68800 R15: ffff888029a20008
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5353a1af98 CR3: 000000003082c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400