list_del corruption, ffff8880a8d41a00->prev is LIST_POISON2 (dead000000000122) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:50! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 8626 Comm: syz-executor322 Not tainted 5.5.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_del_entry_valid+0xd3/0x100 lib/list_debug.c:48 Code: 41 5e 41 5f 5d c3 48 c7 c7 83 07 cf 88 4c 89 f6 31 c0 e8 d3 48 c1 fd 0f 0b 48 c7 c7 bb 07 cf 88 4c 89 f6 31 c0 e8 c0 48 c1 fd <0f> 0b 48 c7 c7 f3 07 cf 88 4c 89 f6 31 c0 e8 ad 48 c1 fd 0f 0b 48 RSP: 0018:ffffc90002127738 EFLAGS: 00010246 RAX: 000000000000004e RBX: ffff8880a00ebd70 RCX: 622a6c10d9357e00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc90002127758 R08: ffffffff815f9d64 R09: ffffed1015d865e0 R10: ffffed1015d865e0 R11: 0000000000000000 R12: dffffc0000000000 R13: dffffc0000000000 R14: ffff8880a8d41a00 R15: dead000000000122 FS: 00000000012af880(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000280 CR3: 0000000096680000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry include/linux/list.h:131 [inline] list_del_rcu include/linux/rculist.h:148 [inline] nft_obj_del net/netfilter/nf_tables_api.c:6970 [inline] nf_tables_commit+0x17a3/0x41e0 net/netfilter/nf_tables_api.c:7171 nfnetlink_rcv_batch net/netfilter/nfnetlink.c:485 [inline] nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:543 [inline] nfnetlink_rcv+0x1485/0x1e50 net/netfilter/nfnetlink.c:561 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x767/0x920 net/netlink/af_netlink.c:1328 netlink_sendmsg+0xa2c/0xd50 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:639 [inline] sock_sendmsg net/socket.c:659 [inline] ____sys_sendmsg+0x4f7/0x7f0 net/socket.c:2330 ___sys_sendmsg net/socket.c:2384 [inline] __sys_sendmsg+0x1ed/0x290 net/socket.c:2417 __do_sys_sendmsg net/socket.c:2426 [inline] __se_sys_sendmsg net/socket.c:2424 [inline] __x64_sys_sendmsg+0x7f/0x90 net/socket.c:2424 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4406a9 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffee7625478 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004406a9 RDX: 0000000000042000 RSI: 0000000020000140 RDI: 0000000000000004 RBP: 00000000006ca018 R08: 0000000000000001 R09: 00000000004002c8 R10: 0000000000000009 R11: 0000000000000246 R12: 0000000000401f30 R13: 0000000000401fc0 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 77998d9a0bd5468d ]--- RIP: 0010:__list_del_entry_valid+0xd3/0x100 lib/list_debug.c:48 Code: 41 5e 41 5f 5d c3 48 c7 c7 83 07 cf 88 4c 89 f6 31 c0 e8 d3 48 c1 fd 0f 0b 48 c7 c7 bb 07 cf 88 4c 89 f6 31 c0 e8 c0 48 c1 fd <0f> 0b 48 c7 c7 f3 07 cf 88 4c 89 f6 31 c0 e8 ad 48 c1 fd 0f 0b 48 RSP: 0018:ffffc90002127738 EFLAGS: 00010246 RAX: 000000000000004e RBX: ffff8880a00ebd70 RCX: 622a6c10d9357e00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc90002127758 R08: ffffffff815f9d64 R09: ffffed1015d865e0 R10: ffffed1015d865e0 R11: 0000000000000000 R12: dffffc0000000000 R13: dffffc0000000000 R14: ffff8880a8d41a00 R15: dead000000000122 FS: 00000000012af880(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000280 CR3: 0000000096680000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400