slab kmalloc-8k start ffff8881473a4000 pointer offset 1480 size 8192
list_del corruption. prev->next should be ffff88807dd6f3e8, but was ffff8881473a45c8. (prev=ffff8881473a45c8)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:62!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 10174 Comm: syz.3.824 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:__list_del_entry_valid_or_report+0x17a/0x200 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 a0 4a d0 8b e8 57 89 f2 fc 90 <0f> 0b 4c 89 e7 e8 8c 12 57 fd 48 89 ea 48 b8 00 00 00 00 00 fc ff
RSP: 0018:ffffc9000de479f8 EFLAGS: 00010086
RAX: 000000000000006d RBX: ffff88807dd6f3e8 RCX: ffffffff81996099
RDX: 0000000000000000 RSI: ffffffff8199dbc6 RDI: 0000000000000005
RBP: ffff8881473a45c8 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000001 R11: 0000000000000001 R12: ffff8881473a45c8
R13: ffff88807dd6f3e8 R14: ffff88807dd6f3f0 R15: ffff88807dd6f3c0
FS:  0000000000000000(0000) GS:ffff888124e6f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000005a0000 CR3: 000000005f192000 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 include/linux/list.h:237 [inline]
 __remove_wait_queue include/linux/wait.h:209 [inline]
 remove_wait_queue+0x30/0x180 kernel/sched/wait.c:74
 ep_remove_wait_queue+0x85/0x1d0 fs/eventpoll.c:676
 ep_unregister_pollwait fs/eventpoll.c:691 [inline]
 ep_clear_and_put+0x186/0x420 fs/eventpoll.c:916
 ep_eventpoll_release+0x3e/0x60 fs/eventpoll.c:966
 __fput+0x3ff/0xb70 fs/file_table.c:468
 task_work_run+0x14d/0x240 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x86f/0x2bf0 kernel/exit.c:966
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1107
 get_signal+0x2671/0x26d0 kernel/signal.c:3034
 arch_do_signal_or_restart+0x8f/0x790 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop+0x85/0x130 kernel/entry/common.c:40
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x419/0x4b0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8eec98eec9
Code: Unable to access opcode bytes at 0x7f8eec98ee9f.
RSP: 002b:00007f8eed808038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: 0000000000000000 RBX: 00007f8eecbe5fa0 RCX: 00007f8eec98eec9
RDX: 0000000000100000 RSI: 0000200000000d80 RDI: 0000000000000003
RBP: 00007f8eeca11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8eecbe6038 R14: 00007f8eecbe5fa0 R15: 00007fff46b57748
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0x17a/0x200 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 a0 4a d0 8b e8 57 89 f2 fc 90 <0f> 0b 4c 89 e7 e8 8c 12 57 fd 48 89 ea 48 b8 00 00 00 00 00 fc ff
RSP: 0018:ffffc9000de479f8 EFLAGS: 00010086
RAX: 000000000000006d RBX: ffff88807dd6f3e8 RCX: ffffffff81996099
RDX: 0000000000000000 RSI: ffffffff8199dbc6 RDI: 0000000000000005
RBP: ffff8881473a45c8 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000001 R11: 0000000000000001 R12: ffff8881473a45c8
R13: ffff88807dd6f3e8 R14: ffff88807dd6f3f0 R15: ffff88807dd6f3c0
FS:  0000000000000000(0000) GS:ffff888124e6f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000005a0000 CR3: 000000005f192000 CR4: 00000000003526f0