list_del corruption. prev->next should be ffff88802a261df0, but was ffff88805f2618f0
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:61!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 23 Comm: kworker/1:1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Workqueue: events io_fallback_req_func
RIP: 0010:__list_del_entry_valid+0x107/0x120 lib/list_debug.c:59
Code: 48 89 de e8 0b 6e c9 05 0f 0b 48 c7 c7 40 fc 79 8a 48 89 de e8 fa 6d c9 05 0f 0b 48 c7 c7 a0 fc 79 8a 48 89 de e8 e9 6d c9 05 <0f> 0b 48 c7 c7 00 fd 79 8a 48 89 de e8 d8 6d c9 05 0f 0b 00 00 cc
RSP: 0018:ffffc90000ddfac8 EFLAGS: 00010046
RAX: 0000000000000054 RBX: ffff88802a261df0 RCX: 57abce9f09277800
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: ffff88802a588588 R08: ffff8880b9133d7f R09: 1ffff110172267af
R10: dffffc0000000000 R11: ffffed10172267b0 R12: dffffc0000000000
R13: ffff88802a261df0 R14: ffff88802a5885c8 R15: ffff88802a5885c8
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c29c3e0 CR3: 000000005a0f7000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_del_entry include/linux/list.h:132 [inline]
 list_del_init include/linux/list.h:204 [inline]
 io_poll_remove_entry io_uring/io_uring.c:5579 [inline]
 io_poll_remove_entries+0x193/0x4a0 io_uring/io_uring.c:5606
 io_poll_task_func+0xfe/0x280 io_uring/io_uring.c:5708
 io_fallback_req_func+0x100/0x210 io_uring/io_uring.c:1280
 process_one_work+0x85f/0x1010 kernel/workqueue.c:2310
 worker_thread+0xaa6/0x1290 kernel/workqueue.c:2457
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
Modules linked in:
---[ end trace 7d436543ed03b604 ]---
RIP: 0010:__list_del_entry_valid+0x107/0x120 lib/list_debug.c:59
Code: 48 89 de e8 0b 6e c9 05 0f 0b 48 c7 c7 40 fc 79 8a 48 89 de e8 fa 6d c9 05 0f 0b 48 c7 c7 a0 fc 79 8a 48 89 de e8 e9 6d c9 05 <0f> 0b 48 c7 c7 00 fd 79 8a 48 89 de e8 d8 6d c9 05 0f 0b 00 00 cc
RSP: 0018:ffffc90000ddfac8 EFLAGS: 00010046
RAX: 0000000000000054 RBX: ffff88802a261df0 RCX: 57abce9f09277800
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: ffff88802a588588 R08: ffff8880b9133d7f R09: 1ffff110172267af
R10: dffffc0000000000 R11: ffffed10172267b0 R12: dffffc0000000000
R13: ffff88802a261df0 R14: ffff88802a5885c8 R15: ffff88802a5885c8
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c29c3e0 CR3: 000000005a0f7000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400