skbuff: skb_over_panic: text:ffffffff826f8bb3 len:232 put:72 head:ffff8800b7e7bb80 data:ffff8800b7e7bb80 tail:0xe8 end:0xc0 dev: ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:104! invalid opcode: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 0 PID: 3063 Comm: syz-executor.0 Not tainted 4.4.174+ #4 task: ffff8801d8e8af80 task.stack: ffff8801c48f0000 RIP: 0010:[] [] skb_panic+0x176/0x178 net/core/skbuff.c:104 RSP: 0018:ffff8801c48f6dd0 EFLAGS: 00010282 RAX: 0000000000000086 RBX: ffff8800b816ec80 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81220458 RDI: ffffed003891edac RBP: ffff8801c48f6e38 R08: 0000000000000086 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffffffff82a52b20 R13: ffffffff826f8bb3 R14: 0000000000000048 R15: ffffffff82a527c0 FS: 00007fc0c8802700(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2fb24000 CR3: 00000001d5362000 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffff8800b7e7bb80 00000000000000e8 00000000000000c0 ffffffff82a527c0 ffffffff821f7a30 ffff8800b7e7bb80 00000000000000e8 00000000000000c0 00000000000000e8 ffff8800b816ec80 0000000000000048 ffffffff826f8bb3 Call Trace: [] skb_over_panic net/core/skbuff.c:109 [inline] [] skb_put.cold+0x23/0x23 net/core/skbuff.c:1363 [] dump_ah_combs net/key/af_key.c:2980 [inline] [] pfkey_send_acquire+0x1b13/0x23f0 net/key/af_key.c:3246 [] km_query+0xba/0x1d0 net/xfrm/xfrm_state.c:1756 [] xfrm_state_find+0x15df/0x24c0 net/xfrm/xfrm_state.c:852 [] xfrm_tmpl_resolve_one+0x1c7/0x790 net/xfrm/xfrm_policy.c:1455 [] xfrm_tmpl_resolve net/xfrm/xfrm_policy.c:1499 [inline] [] xfrm_resolve_and_create_bundle+0x210/0x1df0 net/xfrm/xfrm_policy.c:1847 [] xfrm_lookup+0x203/0xad0 net/xfrm/xfrm_policy.c:2204 [] xfrm_lookup_route+0x38/0x140 net/xfrm/xfrm_policy.c:2326 [] ip_route_output_flow+0x93/0xa0 net/ipv4/route.c:2437 [] udp_sendmsg+0x1537/0x1c60 net/ipv4/udp.c:1040 [] udpv6_sendmsg+0x12f2/0x24f0 net/ipv6/udp.c:1173 [] inet_sendmsg+0x202/0x4d0 net/ipv4/af_inet.c:755 [] sock_sendmsg_nosec net/socket.c:638 [inline] [] sock_sendmsg+0xbe/0x110 net/socket.c:648 [] ___sys_sendmsg+0x369/0x890 net/socket.c:1975 [] __sys_sendmmsg+0x130/0x2e0 net/socket.c:2060 [] SYSC_sendmmsg net/socket.c:2090 [inline] [] SyS_sendmmsg+0x35/0x60 net/socket.c:2085 [] entry_SYSCALL_64_fastpath+0x1e/0x9a Code: 2b 9e d8 fe 4c 8b 4d b8 8b 4b 78 41 57 45 89 f0 4c 89 ea ff 75 d0 4c 89 e6 48 c7 c7 00 28 a5 82 ff 75 c8 ff 75 c0 e8 11 4c cb fe <0f> 0b e8 4d e5 c0 fe 4c 8b 6d 08 e8 34 87 d8 fe 48 c7 c1 e0 2a RIP [] skb_panic+0x176/0x178 net/core/skbuff.c:100 RSP ---[ end trace e08bd661d23348d3 ]---