IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready audit: type=1400 audit(1519462102.163:11): avc: denied { sys_chroot } for pid=4194 comm="syz-executor5" capability=18 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 8021q: adding VLAN 0 to HW filter on device bond0 ------------[ cut here ]------------ kernel BUG at ./include/linux/skbuff.h:2073! audit: type=1400 audit(1519462102.223:12): avc: denied { net_raw } for pid=5333 comm="syz-executor5" capability=13 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 invalid opcode: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: IPv6: veth0: IPv6 duplicate address fe80::a8aa:aaff:feaa:50f used by aa:aa:aa:aa:05:0f detected! CPU: 1 PID: 5335 Comm: syz-executor5 Not tainted 4.16.0-rc2+ #236 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__skb_pull include/linux/skbuff.h:2073 [inline] RIP: 0010:__ip6_make_skb+0x1ac8/0x2190 net/ipv6/ip6_output.c:1636 RSP: 0018:ffff8801afa670a0 EFLAGS: 00010293 RAX: ffff8801c7320380 RBX: 0000000000000738 RCX: ffffffff84f01828 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8801d015ec18 RBP: ffff8801afa67310 R08: ffff8801cbe23e84 R09: 0000000000000000 R10: ffff8801afa67330 R11: ffffed003986d131 R12: 00000000000000d6 R13: ffff8801d015e740 R14: dffffc0000000000 R15: ffff8801cbe23e00 IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f7fddb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000002000b000 CR3: 00000001cbfe7003 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 8021q: adding VLAN 0 to HW filter on device bond0 ip6_finish_skb include/net/ipv6.h:969 [inline] udp_v6_push_pending_frames+0x269/0x3b0 net/ipv6/udp.c:1073 udpv6_sendmsg+0x2a96/0x3400 net/ipv6/udp.c:1343 IPv6: veth0: IPv6 duplicate address fe80::5:f used by aa:aa:aa:aa:05:0f detected! IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready inet_sendmsg+0x11f/0x5e0 net/ipv4/af_inet.c:764 sock_sendmsg_nosec net/socket.c:630 [inline] sock_sendmsg+0xca/0x110 net/socket.c:640 ___sys_sendmsg+0x320/0x8b0 net/socket.c:2046 __sys_sendmmsg+0x31b/0x620 net/socket.c:2129 C_SYSC_sendmmsg net/compat.c:745 [inline] compat_SyS_sendmmsg+0x32/0x40 net/compat.c:742 do_syscall_32_irqs_on arch/x86/entry/common.c:330 [inline] do_fast_syscall_32+0x3ec/0xf9f arch/x86/entry/common.c:392 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7fe1c99 RSP: 002b:00000000f7fdd09c EFLAGS: 00000286 ORIG_RAX: 0000000000000159 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020001f00 RDX: 0000000000000003 RSI: 0000000020000080 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Code: ff e8 1d 5e b9 fc e9 15 e9 ff ff e8 13 5e b9 fc e9 44 e8 ff ff e8 29 5e b9 fc e9 c0 e6 ff ff e8 3f f3 80 fc 0f 0b e8 38 f3 80 fc <0f> 0b 49 8d 87 80 00 00 00 4d 8d 87 84 00 00 00 48 89 85 20 fe RIP: __skb_pull include/linux/skbuff.h:2073 [inline] RSP: ffff8801afa670a0 RIP: __ip6_make_skb+0x1ac8/0x2190 net/ipv6/ip6_output.c:1636 RSP: ffff8801afa670a0 ---[ end trace 5319e8e7a6081565 ]---