slab kmalloc-8k start ffff88802c2f8000 pointer offset 1480 size 8192
list_del corruption. prev->next should be ffff888085500df0, but was ffff88802c2f85c8. (prev=ffff88802c2f85c8)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:64!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 11930 Comm: kworker/1:6 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+0x15a/0x190 lib/list_debug.c:62
Code: e8 6b b4 54 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 2c b3 77 fd 49 8b 17 48 c7 c7 40 a9 27 8c 48 89 de 4c 89 f9 e8 f7 a7 6f fc 90 <0f> 0b 4c 89 f7 e8 3c b4 54 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 fd
RSP: 0018:ffffc900038d7940 EFLAGS: 00010046
RAX: 000000000000006d RBX: ffff888085500df0 RCX: 31f536ca96511800
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffff8880b87247d3 R09: 1ffff110170e48fa
R10: dffffc0000000000 R11: ffffed10170e48fb R12: 1ffff1100585f0b9
R13: dffffc0000000000 R14: ffff88802c2f85c8 R15: ffff88802c2f85c8
FS:  0000000000000000(0000) GS:ffff888125563000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000040 CR3: 00000000309f8000 CR4: 00000000003526f0
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+0x1ee/0x610 io_uring/poll.c:197
 io_poll_task_func+0x721/0xd60 io_uring/poll.c:343
 io_fallback_req_func+0x120/0x210 io_uring/tw.c:30
 process_one_work+0x949/0x1650 kernel/workqueue.c:3279
 process_scheduled_works kernel/workqueue.c:3362 [inline]
 worker_thread+0xb46/0x1140 kernel/workqueue.c:3443
 kthread+0x388/0x470 kernel/kthread.c:467
 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0x15a/0x190 lib/list_debug.c:62
Code: e8 6b b4 54 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 2c b3 77 fd 49 8b 17 48 c7 c7 40 a9 27 8c 48 89 de 4c 89 f9 e8 f7 a7 6f fc 90 <0f> 0b 4c 89 f7 e8 3c b4 54 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 fd
RSP: 0018:ffffc900038d7940 EFLAGS: 00010046
RAX: 000000000000006d RBX: ffff888085500df0 RCX: 31f536ca96511800
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffff8880b87247d3 R09: 1ffff110170e48fa
R10: dffffc0000000000 R11: ffffed10170e48fb R12: 1ffff1100585f0b9
R13: dffffc0000000000 R14: ffff88802c2f85c8 R15: ffff88802c2f85c8
FS:  0000000000000000(0000) GS:ffff888125563000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000040 CR3: 00000000309f8000 CR4: 00000000003526f0