slab kmalloc-8k start ffff88802b76c000 pointer offset 1480 size 8192 list_del corruption. prev->next should be ffff888065e07a30, but was ffff88802b76c5c8. (prev=ffff88802b76c5c8) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:64! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 1 UID: 0 PID: 26272 Comm: syz.5.6654 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:__list_del_entry_valid_or_report+0x15a/0x190 lib/list_debug.c:62 Code: e8 7b b0 54 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 1c ae 77 fd 49 8b 17 48 c7 c7 40 a9 27 8c 48 89 de 4c 89 f9 e8 77 b2 6f fc 90 <0f> 0b 4c 89 f7 e8 4c b0 54 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 ed RSP: 0018:ffffc9000367f8d0 EFLAGS: 00010046 RAX: 000000000000006d RBX: ffff888065e07a30 RCX: 7ccedcbca014e400 RDX: ffffc90012f26000 RSI: 0000000000041408 RDI: 0000000000041409 RBP: dffffc0000000000 R08: ffff8880b87247d3 R09: 1ffff110170e48fa R10: dffffc0000000000 R11: ffffed10170e48fb R12: 1ffff110056ed8b9 R13: dffffc0000000000 R14: ffff88802b76c5c8 R15: ffff88802b76c5c8 FS: 00007fbda1a596c0(0000) GS:ffff888125566000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8b12ffe1cc CR3: 0000000081b98000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000c DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: __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_arm_poll_handler+0x730/0xc10 io_uring/poll.c:602 io_poll_add+0xda/0x200 io_uring/poll.c:899 __io_issue_sqe+0x180/0x4b0 io_uring/io_uring.c:1384 io_issue_sqe+0x164/0xf90 io_uring/io_uring.c:1407 io_queue_sqe io_uring/io_uring.c:1634 [inline] io_submit_sqe io_uring/io_uring.c:1920 [inline] io_submit_sqes+0xc75/0x2370 io_uring/io_uring.c:2043 __do_sys_io_uring_enter io_uring/io_uring.c:2603 [inline] __se_sys_io_uring_enter+0x2cc/0x18c0 io_uring/io_uring.c:2538 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbda0b9c629 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fbda1a59028 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 00007fbda0e15fa0 RCX: 00007fbda0b9c629 RDX: 0000000000000000 RSI: 00000000000047f6 RDI: 0000000000000004 RBP: 00007fbda0c32b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fbda0e16038 R14: 00007fbda0e15fa0 R15: 00007fbda0f3fa48 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_del_entry_valid_or_report+0x15a/0x190 lib/list_debug.c:62 Code: e8 7b b0 54 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 1c ae 77 fd 49 8b 17 48 c7 c7 40 a9 27 8c 48 89 de 4c 89 f9 e8 77 b2 6f fc 90 <0f> 0b 4c 89 f7 e8 4c b0 54 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 ed RSP: 0018:ffffc9000367f8d0 EFLAGS: 00010046 RAX: 000000000000006d RBX: ffff888065e07a30 RCX: 7ccedcbca014e400 RDX: ffffc90012f26000 RSI: 0000000000041408 RDI: 0000000000041409 RBP: dffffc0000000000 R08: ffff8880b87247d3 R09: 1ffff110170e48fa R10: dffffc0000000000 R11: ffffed10170e48fb R12: 1ffff110056ed8b9 R13: dffffc0000000000 R14: ffff88802b76c5c8 R15: ffff88802b76c5c8 FS: 00007fbda1a596c0(0000) GS:ffff888125566000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8b12ffe1cc CR3: 0000000081b98000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000c DR6: 00000000ffff0ff0 DR7: 0000000000000400