INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.11' (ECDSA) to the list of known hosts. 2018/04/12 19:57:01 fuzzer started 2018/04/12 19:57:01 dialing manager at 10.128.0.26:44405 2018/04/12 19:57:07 kcov=true, comps=false 2018/04/12 19:57:10 executing program 0: r0 = inotify_init1(0x0) mmap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x0, 0x11, r0, 0x0) 2018/04/12 19:57:10 executing program 1: r0 = socket(0x100000000000010, 0x3, 0x0) write(r0, &(0x7f0000000140)="26000000130047f1eb14c1f8590022ff001000e301000000010000000000000006001000064b", 0x26) 2018/04/12 19:57:10 executing program 7: r0 = socket$inet6(0xa, 0x1, 0x0) setsockopt$sock_int(r0, 0x1, 0x400000000f, &(0x7f000048dffc)=0x5, 0x4) setsockopt$sock_int(0xffffffffffffffff, 0x1, 0x0, &(0x7f0000014ffc), 0x4) bind$inet6(r0, &(0x7f0000f31000)={0xa, 0x4e20}, 0x1c) 2018/04/12 19:57:10 executing program 4: perf_event_open(&(0x7f0000271000)={0x2, 0x70, 0x49, 0x2}, 0x0, 0x0, 0xffffffffffffffff, 0x0) r0 = syz_open_procfs(0x0, &(0x7f0000000080)='net/tcp\x00') pread64(r0, &(0x7f00000000c0)=""/163, 0xa3, 0x0) 2018/04/12 19:57:10 executing program 2: r0 = socket$inet6(0xa, 0x8000000000000802, 0x0) setsockopt$inet6_opts(r0, 0x29, 0x3b, &(0x7f0000000140)=ANY=[@ANYBLOB="0000001b00000027"], 0x1) sendmsg(r0, &(0x7f0000000a40)={&(0x7f00000000c0)=@in6={0xa, 0x4e24, 0x0, @mcast1={0xff, 0x1, [], 0x1}}, 0x80, &(0x7f00000001c0), 0x0, &(0x7f00000009c0)}, 0x8001) sendmsg$inet_sctp(r0, &(0x7f0000000080)={&(0x7f0000000040)=@in6={0xa, 0x0, 0x0, @local={0xfe, 0x80, [], 0xaa}}, 0x1c, &(0x7f0000000180)=[{&(0x7f00000012c0)="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", 0xb3d}], 0x1}, 0x8000) setsockopt$inet6_udp_int(r0, 0x11, 0x1, &(0x7f00009f0ffc), 0x4) 2018/04/12 19:57:10 executing program 3: r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000040)='./cgroup\x00', 0x200002, 0x0) fchdir(r0) open(&(0x7f0000000080)='..', 0x410003, 0x0) 2018/04/12 19:57:10 executing program 5: perf_event_open(&(0x7f000025c000)={0x2, 0x70, 0x3e5}, 0x0, 0x0, 0xffffffffffffffff, 0x0) r0 = socket$inet6(0xa, 0x2100000000000002, 0x0) r1 = socket$nl_xfrm(0x10, 0x3, 0x6) bind$netlink(r1, &(0x7f0000000080)={0x10, 0x0, 0x0, 0x1}, 0xc) setsockopt$inet6_IPV6_XFRM_POLICY(r0, 0x29, 0x23, &(0x7f00000001c0)={{{@in6=@remote={0xfe, 0x80, [], 0xbb}, @in=@multicast2=0xe0000002, 0x0, 0x0, 0x0, 0x0, 0xa}, {}, {}, 0x0, 0x0, 0x1}, {{@in6=@loopback={0x0, 0x1}, 0x0, 0x2b}, 0x0, @in=@broadcast=0xffffffff, 0x0, 0x0, 0x0, 0x9}}, 0xe8) connect$inet6(r0, &(0x7f0000000040)={0xa, 0x0, 0x0, @mcast2={0xff, 0x2, [], 0x1}, 0x4}, 0x1c) 2018/04/12 19:57:10 executing program 6: r0 = socket$inet6(0xa, 0x1, 0x8010000400000084) bind$inet6(r0, &(0x7f0000000100)={0xa, 0x4e20}, 0x1c) socketpair$ax25(0x3, 0x5, 0xcf, &(0x7f0000000280)) sendto$inet6(r0, &(0x7f00009f1000)='G', 0x1, 0x0, &(0x7f0000108fe4)={0xa, 0x4e20, 0x0, @loopback={0x0, 0x1}}, 0x1c) r1 = socket$inet_tcp(0x2, 0x1, 0x0) ioctl$sock_inet_SIOCSIFFLAGS(r1, 0x8914, &(0x7f0000000140)={'lo\x00'}) sendto$inet6(r0, &(0x7f00000002c0), 0xfe53, 0x0, 0x0, 0x7fb35a38104a3cef) ioctl$DRM_IOCTL_GEM_OPEN(0xffffffffffffff9c, 0xc010640b, &(0x7f0000000000)) socket$inet_sctp(0x2, 0x0, 0x84) getsockopt$inet_sctp6_SCTP_RTOINFO(0xffffffffffffffff, 0x84, 0x0, &(0x7f00000008c0), &(0x7f0000000900)=0x10) getsockopt$inet_sctp_SCTP_AUTH_ACTIVE_KEY(0xffffffffffffff9c, 0x84, 0x18, &(0x7f0000000940), &(0x7f0000000980)=0x8) getsockopt$inet_sctp6_SCTP_DELAYED_SACK(0xffffffffffffffff, 0x84, 0x10, &(0x7f00000009c0)=@assoc_value, &(0x7f0000000a00)=0x8) getsockopt$inet_sctp_SCTP_GET_PEER_ADDR_INFO(0xffffffffffffff9c, 0x84, 0xf, &(0x7f0000000a40)={0x0, @in6={{0xa}}}, &(0x7f0000000b00)=0x98) getsockopt$inet_sctp_SCTP_PEER_AUTH_CHUNKS(0xffffffffffffffff, 0x84, 0x1a, &(0x7f0000000480)=ANY=[@ANYRES32=0x0, @ANYBLOB="29396f8f483447cbbdb1619f31fd540947cfff490dcaffba3feb647ef503a9d3d3cda8b5c509a381de35af0c76e3fb3dea35143d4591d731ff7967859b37a2b5e8f64e8b97d2185f2b534c98f2d7edc1f34c440000173c1177f1dfe54abe7432bd67aefe91ea2c0995d3618c15300300000000000000eed85177dff69dd7a33425ae1d4a527137ae64b7ad5a125d40cbfaca9be0d46a6e1200f4320092178787768e2ec27a000000000000000000000000000000000000000000000000000000000000"], &(0x7f0000000b80)=0x2) getsockopt$inet_sctp6_SCTP_ASSOCINFO(0xffffffffffffffff, 0x84, 0x1, &(0x7f00000010c0), &(0x7f0000001100)=0x14) sendmmsg$inet_sctp(0xffffffffffffffff, &(0x7f0000001180), 0x0, 0x0) ioctl$DRM_IOCTL_GEM_OPEN(0xffffffffffffff9c, 0xc010640b, &(0x7f00000001c0)) ioctl$DRM_IOCTL_GEM_OPEN(0xffffffffffffffff, 0xc010640b, &(0x7f0000000240)) syzkaller login: [ 43.011365] ip (3790) used greatest stack depth: 54408 bytes left [ 43.064280] ip (3796) used greatest stack depth: 54312 bytes left [ 44.192381] ip (3906) used greatest stack depth: 54296 bytes left [ 45.885101] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 45.982266] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 46.119982] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 46.131092] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 46.151205] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 46.167346] ip (4075) used greatest stack depth: 53976 bytes left [ 46.175932] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 46.335747] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 46.347095] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 54.783215] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 54.831831] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 54.840794] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 54.969622] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 55.106392] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 55.148199] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 55.240277] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 55.255267] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 55.563225] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 55.569467] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 55.581131] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 55.621506] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 55.629564] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 55.635956] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 55.649584] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 55.660473] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 55.681978] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 55.707689] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 55.714401] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 55.738236] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 55.886953] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 55.893225] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 55.903808] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 55.929772] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 55.947227] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 55.962110] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 56.120683] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 56.126967] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 56.143012] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 56.213601] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 56.219866] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 56.230582] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.309822] netlink: 'syz-executor1': attribute type 16 has an invalid length. [ 57.633284] ================================================================== [ 57.640689] BUG: KMSAN: uninit-value in raw6_local_deliver+0x259/0x1ac0 [ 57.647439] CPU: 1 PID: 5079 Comm: syz-executor2 Not tainted 4.16.0+ #83 [ 57.654267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.663606] Call Trace: [ 57.666175] [ 57.668326] dump_stack+0x185/0x1d0 [ 57.671951] ? raw6_local_deliver+0x259/0x1ac0 [ 57.676525] kmsan_report+0x142/0x240 [ 57.680323] __msan_warning_32+0x6c/0xb0 [ 57.684381] ? ip6_input_finish+0x55c/0x2110 [ 57.688785] raw6_local_deliver+0x259/0x1ac0 [ 57.693202] ip6_input_finish+0x55c/0x2110 [ 57.697437] ? ip6table_filter_hook+0xb5/0xe0 [ 57.701933] ? __msan_metadata_ptr_for_load_2+0x10/0x20 [ 57.707297] ip6_mc_input+0x697/0x740 [ 57.711095] ? ip6_input+0x320/0x320 [ 57.714804] ? ip6_input_finish+0x2110/0x2110 [ 57.719296] ipv6_rcv+0x20ec/0x26d0 [ 57.722925] ? local_bh_enable+0x40/0x40 [ 57.726995] __netif_receive_skb_core+0x47cf/0x4a80 [ 57.732006] ? kmsan_set_origin_inline+0x6b/0x120 [ 57.736844] ? kmsan_internal_memset_shadow_inline+0xd0/0xd0 [ 57.742641] ? ip6_rcv_finish+0x4d0/0x4d0 [ 57.746785] process_backlog+0x62d/0xe20 [ 57.750851] ? rps_trigger_softirq+0x2f0/0x2f0 [ 57.755430] net_rx_action+0x7c1/0x1a70 [ 57.759409] ? net_tx_action+0xab0/0xab0 [ 57.763466] __do_softirq+0x56d/0x93d [ 57.767267] do_softirq_own_stack+0x2a/0x40 [ 57.771577] [ 57.773814] do_softirq+0xb6/0xf0 [ 57.777266] dev_loopback_xmit+0x8b0/0x900 [ 57.781502] ip6_finish_output2+0x5e6/0x1f20 [ 57.785913] ? validate_xmit_skb+0x1320/0x1320 [ 57.790482] ? ip6_fragment+0x327b/0x5150 [ 57.794613] ip6_fragment+0x32e6/0x5150 [ 57.798569] ? ip6_make_skb+0x1100/0x1100 [ 57.802713] ip6_finish_output+0x96c/0xc00 [ 57.806926] ip6_output+0x597/0x6c0 [ 57.810529] ? ip6_output+0x6c0/0x6c0 [ 57.814307] ? ac6_seq_show+0x200/0x200 [ 57.818255] ip6_local_out+0x573/0x640 [ 57.822120] ? __ip6_local_out+0x4f0/0x4f0 [ 57.826336] ip6_send_skb+0xfa/0x380 [ 57.830040] udp_v6_send_skb+0x116a/0x1880 [ 57.834280] udp_v6_push_pending_frames+0x248/0x340 [ 57.839283] udp_lib_setsockopt+0x4c9/0xad0 [ 57.843581] ? udp_v6_send_skb+0x1880/0x1880 [ 57.847969] udpv6_setsockopt+0x1aa/0x1c0 [ 57.852107] ? udpv6_destroy_sock+0x260/0x260 [ 57.856861] sock_common_setsockopt+0x136/0x170 [ 57.861507] ? sock_common_recvmsg+0x270/0x270 [ 57.866065] SYSC_setsockopt+0x4b8/0x570 [ 57.870112] SyS_setsockopt+0x76/0xa0 [ 57.873897] do_syscall_64+0x309/0x430 [ 57.877762] ? SYSC_recv+0xe0/0xe0 [ 57.881288] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 57.886462] RIP: 0033:0x455279 [ 57.889633] RSP: 002b:00007f98bdb12c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 57.897329] RAX: ffffffffffffffda RBX: 00007f98bdb136d4 RCX: 0000000000455279 [ 57.904572] RDX: 0000000000000001 RSI: 0000000000000011 RDI: 0000000000000013 [ 57.911825] RBP: 000000000072bea0 R08: 0000000000000004 R09: 0000000000000000 [ 57.919084] R10: 00000000209f0ffc R11: 0000000000000246 R12: 00000000ffffffff [ 57.926340] R13: 0000000000000563 R14: 00000000006fb1e8 R15: 0000000000000000 [ 57.933594] [ 57.935192] Uninit was stored to memory at: [ 57.939490] kmsan_internal_chain_origin+0x12b/0x210 [ 57.944568] kmsan_memcpy_origins+0x11d/0x170 [ 57.949045] kmsan_memmove_origins+0x9/0x10 [ 57.953350] __msan_memmove+0xda/0x130 [ 57.957224] ipv6_frag_rcv+0x5055/0x6970 [ 57.961267] ip6_input_finish+0xa62/0x2110 [ 57.965486] ip6_mc_input+0x697/0x740 [ 57.969261] ipv6_rcv+0x20ec/0x26d0 [ 57.972863] __netif_receive_skb_core+0x47cf/0x4a80 [ 57.977853] process_backlog+0x62d/0xe20 [ 57.981887] net_rx_action+0x7c1/0x1a70 [ 57.985834] __do_softirq+0x56d/0x93d [ 57.989604] Uninit was created at: [ 57.993123] kmsan_internal_poison_shadow+0xb8/0x1b0 [ 57.998200] kmsan_kmalloc+0x94/0x100 [ 58.001976] kmsan_slab_alloc+0x11/0x20 [ 58.005925] __kmalloc_node_track_caller+0xaed/0x11c0 [ 58.011091] __alloc_skb+0x2cf/0x9f0 [ 58.014788] alloc_skb_with_frags+0x1d4/0xb20 [ 58.019258] sock_alloc_send_pskb+0xb56/0x1190 [ 58.023816] sock_alloc_send_skb+0xca/0xe0 [ 58.028033] __ip6_append_data+0x3387/0x4bb0 [ 58.032419] ip6_append_data+0x40e/0x6b0 [ 58.036454] udpv6_sendmsg+0xfd5/0x45b0 [ 58.040420] inet_sendmsg+0x48d/0x740 [ 58.044203] ___sys_sendmsg+0xec0/0x1310 [ 58.048244] SYSC_sendmsg+0x2a3/0x3d0 [ 58.052038] SyS_sendmsg+0x54/0x80 [ 58.055559] do_syscall_64+0x309/0x430 [ 58.059434] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 58.064599] ================================================================== [ 58.071929] Disabling lock debugging due to kernel taint [ 58.077355] Kernel panic - not syncing: panic_on_warn set ... [ 58.077355] [ 58.084700] CPU: 1 PID: 5079 Comm: syz-executor2 Tainted: G B 4.16.0+ #83 [ 58.092812] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.102146] Call Trace: [ 58.104712] [ 58.106849] dump_stack+0x185/0x1d0 [ 58.110459] panic+0x39d/0x940 [ 58.113640] ? raw6_local_deliver+0x259/0x1ac0 [ 58.118216] kmsan_report+0x238/0x240 [ 58.122005] __msan_warning_32+0x6c/0xb0 [ 58.126059] ? ip6_input_finish+0x55c/0x2110 [ 58.130456] raw6_local_deliver+0x259/0x1ac0 [ 58.134873] ip6_input_finish+0x55c/0x2110 [ 58.139096] ? ip6table_filter_hook+0xb5/0xe0 [ 58.143568] ? __msan_metadata_ptr_for_load_2+0x10/0x20 [ 58.148912] ip6_mc_input+0x697/0x740 [ 58.152687] ? ip6_input+0x320/0x320 [ 58.156378] ? ip6_input_finish+0x2110/0x2110 [ 58.160850] ipv6_rcv+0x20ec/0x26d0 [ 58.164455] ? local_bh_enable+0x40/0x40 [ 58.168498] __netif_receive_skb_core+0x47cf/0x4a80 [ 58.173496] ? kmsan_set_origin_inline+0x6b/0x120 [ 58.178316] ? kmsan_internal_memset_shadow_inline+0xd0/0xd0 [ 58.184091] ? ip6_rcv_finish+0x4d0/0x4d0 [ 58.188214] process_backlog+0x62d/0xe20 [ 58.192261] ? rps_trigger_softirq+0x2f0/0x2f0 [ 58.196819] net_rx_action+0x7c1/0x1a70 [ 58.200776] ? net_tx_action+0xab0/0xab0 [ 58.204823] __do_softirq+0x56d/0x93d [ 58.208611] do_softirq_own_stack+0x2a/0x40 [ 58.212901] [ 58.215123] do_softirq+0xb6/0xf0 [ 58.218552] dev_loopback_xmit+0x8b0/0x900 [ 58.222765] ip6_finish_output2+0x5e6/0x1f20 [ 58.227151] ? validate_xmit_skb+0x1320/0x1320 [ 58.231707] ? ip6_fragment+0x327b/0x5150 [ 58.235834] ip6_fragment+0x32e6/0x5150 [ 58.239792] ? ip6_make_skb+0x1100/0x1100 [ 58.243928] ip6_finish_output+0x96c/0xc00 [ 58.248143] ip6_output+0x597/0x6c0 [ 58.251744] ? ip6_output+0x6c0/0x6c0 [ 58.255521] ? ac6_seq_show+0x200/0x200 [ 58.259471] ip6_local_out+0x573/0x640 [ 58.263335] ? __ip6_local_out+0x4f0/0x4f0 [ 58.267557] ip6_send_skb+0xfa/0x380 [ 58.271248] udp_v6_send_skb+0x116a/0x1880 [ 58.275466] udp_v6_push_pending_frames+0x248/0x340 [ 58.280470] udp_lib_setsockopt+0x4c9/0xad0 [ 58.284776] ? udp_v6_send_skb+0x1880/0x1880 [ 58.289160] udpv6_setsockopt+0x1aa/0x1c0 [ 58.293287] ? udpv6_destroy_sock+0x260/0x260 [ 58.297761] sock_common_setsockopt+0x136/0x170 [ 58.302405] ? sock_common_recvmsg+0x270/0x270 [ 58.306965] SYSC_setsockopt+0x4b8/0x570 [ 58.311014] SyS_setsockopt+0x76/0xa0 [ 58.314799] do_syscall_64+0x309/0x430 [ 58.318677] ? SYSC_recv+0xe0/0xe0 [ 58.322216] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 58.327387] RIP: 0033:0x455279 [ 58.330551] RSP: 002b:00007f98bdb12c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 58.338231] RAX: ffffffffffffffda RBX: 00007f98bdb136d4 RCX: 0000000000455279 [ 58.345477] RDX: 0000000000000001 RSI: 0000000000000011 RDI: 0000000000000013 [ 58.352723] RBP: 000000000072bea0 R08: 0000000000000004 R09: 0000000000000000 [ 58.359979] R10: 00000000209f0ffc R11: 0000000000000246 R12: 00000000ffffffff [ 58.367231] R13: 0000000000000563 R14: 00000000006fb1e8 R15: 0000000000000000 [ 58.374912] Dumping ftrace buffer: [ 58.378427] (ftrace buffer empty) [ 58.382118] Kernel Offset: disabled [ 58.385715] Rebooting in 86400 seconds..