netlink: 20 bytes leftover after parsing attributes in process `syz-executor140'. list_del corruption, ffff88809456a800->prev is LIST_POISON2 (dead000000000122) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:48! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 9784 Comm: syz-executor140 Not tainted 5.5.0-rc7-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 60 69 71 88 e8 00 df be fd 0f 0b 4c 89 e2 4c 89 f6 48 c7 c7 c0 69 71 88 e8 ec de be fd <0f> 0b 4c 89 f6 48 c7 c7 80 6a 71 88 e8 db de be fd 0f 0b cc cc cc RSP: 0018:ffffc90002197478 EFLAGS: 00010282 RAX: 000000000000004e RBX: ffff88809456a800 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815e5326 RDI: fffff52000432e81 RBP: ffffc90002197490 R08: 000000000000004e R09: ffffed1015d06621 R10: ffffed1015d06620 R11: ffff8880ae833107 R12: dead000000000122 R13: ffffffff8a4c74b0 R14: ffff88809456a800 R15: ffff8880a871e900 FS: 00007f71d7ede700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd9454dce0 CR3: 00000000914c4000 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] __nf_tables_abort+0x1e53/0x2a50 net/netfilter/nf_tables_api.c:7258 nf_tables_abort+0x17/0x30 net/netfilter/nf_tables_api.c:7373 nfnetlink_rcv_batch+0xa5d/0x17a0 net/netfilter/nfnetlink.c:494 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: 0033:0x446af9 Code: e8 0c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 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 0f 83 5b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f71d7eddd98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446af9 RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003 RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c R13: 00000000200002c0 R14: 00000000004ae9a8 R15: 0000000000000000 Modules linked in: ---[ end trace 45ab90c6b0b3b94c ]--- 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 60 69 71 88 e8 00 df be fd 0f 0b 4c 89 e2 4c 89 f6 48 c7 c7 c0 69 71 88 e8 ec de be fd <0f> 0b 4c 89 f6 48 c7 c7 80 6a 71 88 e8 db de be fd 0f 0b cc cc cc RSP: 0018:ffffc90002197478 EFLAGS: 00010282 RAX: 000000000000004e RBX: ffff88809456a800 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815e5326 RDI: fffff52000432e81 RBP: ffffc90002197490 R08: 000000000000004e R09: ffffed1015d06621 R10: ffffed1015d06620 R11: ffff8880ae833107 R12: dead000000000122 R13: ffffffff8a4c74b0 R14: ffff88809456a800 R15: ffff8880a871e900 FS: 00007f71d7ede700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd9454dce0 CR3: 00000000914c4000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400