list_del corruption, ffff8880a46b1500->prev is LIST_POISON2 (dead000000000122) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:48! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 9787 Comm: syz-executor290 Not tainted 5.5.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_del_entry_valid.cold+0x37/0x4f lib/list_debug.c:48 Code: be fd 0f 0b 4c 89 ea 4c 89 f6 48 c7 c7 a0 65 71 88 e8 a0 bb be fd 0f 0b 4c 89 e2 4c 89 f6 48 c7 c7 00 66 71 88 e8 8c bb be fd <0f> 0b 4c 89 f6 48 c7 c7 c0 66 71 88 e8 7b bb be fd 0f 0b cc cc cc RSP: 0018:ffffc900020e7338 EFLAGS: 00010286 RAX: 000000000000004e RBX: ffff8880a46b1500 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815e53a6 RDI: fffff5200041ce59 RBP: ffffc900020e7350 R08: 000000000000004e R09: ffffed1015d26621 R10: ffffed1015d26620 R11: ffff8880ae933107 R12: dead000000000122 R13: ffff88809e9c3970 R14: ffff8880a46b1500 R15: ffff8880a46b1508 FS: 0000000000837880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000280 CR3: 000000008f0b6000 CR4: 00000000001406e0 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+0xcb/0x1f0 net/netfilter/nf_tables_api.c:6970 nf_tables_commit+0x1339/0x3b30 net/netfilter/nf_tables_api.c:7171 nfnetlink_rcv_batch+0xc78/0x17a0 net/netfilter/nfnetlink.c:485 nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:543 [inline] nfnetlink_rcv+0x3e7/0x460 net/netfilter/nfnetlink.c:561 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x58c/0x7d0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x91c/0xea0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:639 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:659 ____sys_sendmsg+0x753/0x880 net/socket.c:2330 ___sys_sendmsg+0x100/0x170 net/socket.c:2384 __sys_sendmsg+0x105/0x1d0 net/socket.c:2417 __do_sys_sendmsg net/socket.c:2426 [inline] __se_sys_sendmsg net/socket.c:2424 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2424 do_syscall_64+0xfa/0x790 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:00007fff37625bc8 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 7b3c7a3aadb229c5 ]--- RIP: 0010:__list_del_entry_valid.cold+0x37/0x4f lib/list_debug.c:48 Code: be fd 0f 0b 4c 89 ea 4c 89 f6 48 c7 c7 a0 65 71 88 e8 a0 bb be fd 0f 0b 4c 89 e2 4c 89 f6 48 c7 c7 00 66 71 88 e8 8c bb be fd <0f> 0b 4c 89 f6 48 c7 c7 c0 66 71 88 e8 7b bb be fd 0f 0b cc cc cc RSP: 0018:ffffc900020e7338 EFLAGS: 00010286 RAX: 000000000000004e RBX: ffff8880a46b1500 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815e53a6 RDI: fffff5200041ce59 RBP: ffffc900020e7350 R08: 000000000000004e R09: ffffed1015d26621 R10: ffffed1015d26620 R11: ffff8880ae933107 R12: dead000000000122 R13: ffff88809e9c3970 R14: ffff8880a46b1500 R15: ffff8880a46b1508 FS: 0000000000837880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000280 CR3: 000000008f0b6000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400