slab kmalloc-8k start ffff888147330000 pointer offset 1480 size 8192
list_del corruption. prev->next should be ffff88808df1c170, but was ffff8881473305c8. (prev=ffff8881473305c8)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:62!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 17862 Comm: kworker/0:0 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
Workqueue: events io_fallback_req_func
RIP: 0010:__list_del_entry_valid_or_report+0x14a/0x1d0 lib/list_debug.c:62
Code: 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 8d 00 00 00 48 8b 55 00 48 89 e9 48 89 de 48 c7 c7 40 3d fa 8b e8 37 b0 32 fc 90 <0f> 0b 4c 89 e7 e8 3c 24 5d fd 48 89 ea 48 b8 00 00 00 00 00 fc ff
RSP: 0018:ffffc900041b7a18 EFLAGS: 00010086
RAX: 000000000000006d RBX: ffff88808df1c170 RCX: 0000000000000000
RDX: 000000000000006d RSI: ffffffff81e5d6c9 RDI: fffff52000836f34
RBP: ffff8881473305c8 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000001 R11: 00000000000880a0 R12: ffff8880aadd8df0
R13: ffff88808df1c188 R14: ffff88808df1c170 R15: ffff88808df1c148
FS:  0000000000000000(0000) GS:ffff8881245d9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000001a7030 CR3: 00000000b020e000 CR4: 00000000003526f0
DR0: 0000000000000044 DR1: 0000000000000000 DR2: 00000000000000cd
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:132 [inline]
 __list_del_entry include/linux/list.h:223 [inline]
 list_del_init include/linux/list.h:295 [inline]
 io_poll_remove_waitq io_uring/poll.c:149 [inline]
 io_poll_remove_entry io_uring/poll.c:166 [inline]
 io_poll_remove_entries.part.0+0x156/0x7e0 io_uring/poll.c:197
 io_poll_remove_entries io_uring/poll.c:177 [inline]
 io_poll_task_func+0x39e/0xe30 io_uring/poll.c:343
 io_fallback_req_func+0x16e/0x223 io_uring/io_uring.c:246
 process_one_work+0x9c2/0x1840 kernel/workqueue.c:3257
 process_scheduled_works kernel/workqueue.c:3340 [inline]
 worker_thread+0x5da/0xe40 kernel/workqueue.c:3421
 kthread+0x3b3/0x730 kernel/kthread.c:463
 ret_from_fork+0x754/0xaf0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0x14a/0x1d0 lib/list_debug.c:62
Code: 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 8d 00 00 00 48 8b 55 00 48 89 e9 48 89 de 48 c7 c7 40 3d fa 8b e8 37 b0 32 fc 90 <0f> 0b 4c 89 e7 e8 3c 24 5d fd 48 89 ea 48 b8 00 00 00 00 00 fc ff
RSP: 0018:ffffc900041b7a18 EFLAGS: 00010086
RAX: 000000000000006d RBX: ffff88808df1c170 RCX: 0000000000000000
RDX: 000000000000006d RSI: ffffffff81e5d6c9 RDI: fffff52000836f34
RBP: ffff8881473305c8 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000001 R11: 00000000000880a0 R12: ffff8880aadd8df0
R13: ffff88808df1c188 R14: ffff88808df1c170 R15: ffff88808df1c148
FS:  0000000000000000(0000) GS:ffff8881245d9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000001a7030 CR3: 00000000b020e000 CR4: 00000000003526f0
DR0: 0000000000000044 DR1: 0000000000000000 DR2: 00000000000000cd
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400