skbuff: skb_over_panic: text:ffffffff864c860d len:232 put:72 head:ffff8880a2223000 data:ffff8880a2223000 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: 22761 Comm: syz-executor.5 Not tainted 4.14.216-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880affc8340 task.stack: ffff88804ad10000 RIP: 0010:skb_panic+0x172/0x174 net/core/skbuff.c:104 RSP: 0018:ffff88804ad171c8 EFLAGS: 00010282 RAX: 0000000000000086 RBX: ffff8880a042ea00 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff81441710 RDI: ffffed10095a2e2f RBP: ffffffff885550a0 R08: 0000000000000086 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff864c860d R13: 0000000000000048 R14: ffffffff88554900 R15: 00000000000000c0 FS: 00007fef64146700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9ebc718000 CR3: 000000006fea3000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_over_panic net/core/skbuff.c:109 [inline] skb_put.cold+0x24/0x24 net/core/skbuff.c:1699 dump_esp_combs net/key/af_key.c:3010 [inline] pfkey_send_acquire+0x161d/0x2360 net/key/af_key.c:3231 km_query+0xa9/0x1b0 net/xfrm/xfrm_state.c:1982 xfrm_state_find+0x1847/0x27c0 net/xfrm/xfrm_state.c:1026 xfrm_tmpl_resolve_one net/xfrm/xfrm_policy.c:1389 [inline] xfrm_tmpl_resolve net/xfrm/xfrm_policy.c:1433 [inline] xfrm_resolve_and_create_bundle+0x29b/0x2630 net/xfrm/xfrm_policy.c:1725 xfrm_lookup+0x1ee/0x1790 net/xfrm/xfrm_policy.c:2035 xfrm_lookup_route+0x33/0x1b0 net/xfrm/xfrm_policy.c:2154 ip_route_output_flow+0xf9/0x130 net/ipv4/route.c:2608 udp_sendmsg+0x13b5/0x1c80 net/ipv4/udp.c:1025 inet_sendmsg+0x11a/0x4e0 net/ipv4/af_inet.c:762 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x326/0x800 net/socket.c:2062 __sys_sendmmsg+0x129/0x330 net/socket.c:2152 SYSC_sendmmsg net/socket.c:2183 [inline] SyS_sendmmsg+0x2f/0x50 net/socket.c:2178 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45e219 RSP: 002b:00007fef64145c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e219 RDX: 000000000800001d RSI: 0000000020007fc0 RDI: 0000000000000003 RBP: 000000000119c070 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c034 R13: 00007ffc7164757f R14: 00007fef641469c0 R15: 000000000119c034 Code: 8b 4c 24 10 8b 8b 80 00 00 00 41 56 45 89 e8 4c 89 e2 41 57 48 89 ee 48 c7 c7 40 49 55 88 ff 74 24 10 ff 74 24 20 e8 90 73 e4 ff <0f> 0b e8 b5 3b 3a fa 4c 8b 64 24 18 e8 bb 9f 63 fa 48 c7 c1 60 RIP: skb_panic+0x172/0x174 net/core/skbuff.c:104 RSP: ffff88804ad171c8 ---[ end trace e75f8e14ff59473f ]---