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 '10.128.0.42' (ECDSA) to the list of known hosts. 2018/04/09 14:47:46 fuzzer started 2018/04/09 14:47:46 dialing manager at 10.128.0.26:38911 2018/04/09 14:47:52 kcov=true, comps=false 2018/04/09 14:47:55 executing program 0: r0 = socket$key(0xf, 0x3, 0x2) sendmsg$key(r0, &(0x7f0000f56000)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000333f88)={0x2, 0x3, 0x0, 0x9, 0xa, 0x0, 0x0, 0x0, [@sadb_address={0x3, 0x6, 0x0, 0x0, 0x0, @in={0x2, 0x0, @multicast1=0xe0000001}}, @sadb_sa={0x2, 0x1, 0x0, 0x0, 0x0, 0x0, 0x2}, @sadb_address={0x3, 0x5, 0x0, 0x0, 0x0, @in={0x2, 0x0, @multicast1=0xe0000001}}]}, 0x50}, 0x1}, 0x0) 2018/04/09 14:47:55 executing program 1: r0 = socket$inet(0x2, 0x3, 0x21) sendto$inet(r0, &(0x7f0000000000), 0x0, 0x8000, &(0x7f0000000040)={0x2, 0x0, @remote={0xac, 0x14, 0x14, 0xbb}}, 0x10) sendto$inet(r0, &(0x7f0000000100)="d57949f20aed308be0a42f92", 0xc, 0x0, &(0x7f00000000c0)={0x2, 0x3, @remote={0xac, 0x14, 0x14, 0xbb}}, 0x10) 2018/04/09 14:47:55 executing program 7: perf_event_open(&(0x7f000025c000)={0x2, 0x78, 0x3e2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1f}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) mmap(&(0x7f0000000000/0xaa1000)=nil, 0xaa1000, 0x4, 0x32, 0xffffffffffffffff, 0x0) r0 = socket$alg(0x26, 0x5, 0x0) bind$alg(r0, &(0x7f00000000c0)={0x26, 'aead\x00', 0x0, 0x0, 'gcm_base(ctr(aes-aesni),ghash-generic)\x00'}, 0x58) 2018/04/09 14:47:55 executing program 2: perf_event_open(&(0x7f000025c000)={0x2, 0x78, 0x3e3, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10000003}, 0x0, 0x0, 0xffffffffffffffff, 0x0) r0 = memfd_create(&(0x7f0000000180)='+#vmnet1ppp0&posix_acl_accessppp1vboxnet0\x00', 0x0) ioctl$TCSETA(r0, 0x4030582a, &(0x7f0000000200)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x40000000000000d8}) 2018/04/09 14:47:55 executing program 4: 2018/04/09 14:47:55 executing program 5: 2018/04/09 14:47:55 executing program 6: 2018/04/09 14:47:55 executing program 3: syzkaller login: [ 42.209981] ip (3797) used greatest stack depth: 54440 bytes left [ 43.354691] ip (3911) used greatest stack depth: 54296 bytes left [ 43.614100] ip (3931) used greatest stack depth: 54200 bytes left [ 44.070152] ip (3970) used greatest stack depth: 54144 bytes left [ 45.399958] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 45.519986] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 45.571011] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 45.580611] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 45.634011] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 45.656840] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 45.725901] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 45.893398] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 54.394679] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 54.412109] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 54.468895] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 54.537220] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 54.663216] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 54.739103] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 54.812758] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 54.920876] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 55.182927] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 55.189250] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 55.200154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 55.234734] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 55.243155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 55.257792] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 55.286590] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 55.292822] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 55.319663] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 55.355694] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 55.362117] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 55.373662] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 55.471687] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 55.478016] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 55.489837] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 55.590164] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 55.596469] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 55.609933] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 55.631708] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 55.637999] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 55.656955] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 55.744684] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 55.750977] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 55.762186] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 56.501190] ================================================================== [ 56.508608] BUG: KMSAN: uninit-value in dccp_invalid_packet+0x3b8/0xf50 [ 56.515364] CPU: 1 PID: 5042 Comm: syz-executor1 Not tainted 4.16.0+ #82 [ 56.522195] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.531542] Call Trace: [ 56.534116] [ 56.536268] dump_stack+0x185/0x1d0 [ 56.539893] ? dccp_invalid_packet+0x3b8/0xf50 [ 56.544471] kmsan_report+0x142/0x240 [ 56.548269] __msan_warning_32+0x6c/0xb0 [ 56.552329] dccp_invalid_packet+0x3b8/0xf50 [ 56.556737] ? ip_local_deliver_finish+0x6ed/0xd40 [ 56.561663] ? ip_local_deliver_finish+0x6ed/0xd40 [ 56.566586] dccp_v4_rcv+0xf7/0x2630 [ 56.570293] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 56.575658] ? raw_local_deliver+0x1462/0x1470 [ 56.580246] ? ip_local_deliver_finish+0x4a5/0xd40 [ 56.585175] ? local_bh_enable+0x40/0x40 [ 56.589234] ? local_bh_enable+0x40/0x40 [ 56.593297] ip_local_deliver_finish+0x6ed/0xd40 [ 56.598057] ip_local_deliver+0x43c/0x4e0 [ 56.602203] ? ip_local_deliver+0x4e0/0x4e0 [ 56.606610] ? ip_call_ra_chain+0x7b0/0x7b0 [ 56.610926] ip_rcv_finish+0x1253/0x16d0 [ 56.614996] ip_rcv+0x119d/0x16f0 [ 56.618448] ? ip_rcv+0x16f0/0x16f0 [ 56.622081] __netif_receive_skb_core+0x47cf/0x4a80 [ 56.627096] ? try_to_wake_up+0x1ab2/0x20a0 [ 56.631423] ? kmsan_internal_memset_shadow_inline+0xd0/0xd0 [ 56.637222] ? ip_local_deliver_finish+0xd40/0xd40 [ 56.642150] process_backlog+0x62d/0xe20 [ 56.646214] ? rps_trigger_softirq+0x2f0/0x2f0 2018/04/09 14:48:12 executing program 4: 2018/04/09 14:48:12 executing program 4: [ 56.650802] net_rx_action+0x7c1/0x1a70 [ 56.654780] ? net_tx_action+0xab0/0xab0 [ 56.658838] __do_softirq+0x56d/0x93d [ 56.662640] do_softirq_own_stack+0x2a/0x40 [ 56.666948] [ 56.669183] __local_bh_enable_ip+0x114/0x140 [ 56.673679] local_bh_enable+0x36/0x40 [ 56.677565] ip_finish_output2+0x124e/0x1380 [ 56.681982] ip_finish_output+0xcb0/0xff0 [ 56.686136] ip_output+0x502/0x5c0 [ 56.689676] ? ip_mc_finish_output+0x3b0/0x3b0 [ 56.694260] ? ip_finish_output+0xff0/0xff0 [ 56.698579] ip_send_skb+0x5f3/0x820 [ 56.702291] ? __ip_local_out+0x5b0/0x5b0 [ 56.706443] ip_push_pending_frames+0x105/0x170 [ 56.711111] raw_sendmsg+0x2960/0x3ed0 [ 56.715014] ? compat_raw_ioctl+0x100/0x100 [ 56.719330] inet_sendmsg+0x48d/0x740 [ 56.723125] ? security_socket_sendmsg+0x9e/0x210 [ 56.727965] ? inet_getname+0x500/0x500 [ 56.731940] SYSC_sendto+0x6c3/0x7e0 [ 56.735652] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 56.741098] ? prepare_exit_to_usermode+0x149/0x3a0 [ 56.746127] SyS_sendto+0x8a/0xb0 [ 56.749577] do_syscall_64+0x309/0x430 [ 56.753467] ? SYSC_getpeername+0x560/0x560 [ 56.757790] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 56.762974] RIP: 0033:0x455259 [ 56.766154] RSP: 002b:00007f4989234c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 56.773859] RAX: ffffffffffffffda RBX: 00007f49892356d4 RCX: 0000000000455259 [ 56.781124] RDX: 000000000000000c RSI: 0000000020000100 RDI: 0000000000000013 [ 56.788390] RBP: 000000000072bea0 R08: 00000000200000c0 R09: 0000000000000010 [ 56.795664] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff 2018/04/09 14:48:12 executing program 4: 2018/04/09 14:48:12 executing program 3: [ 56.802928] R13: 00000000000004f7 R14: 00000000006fa7c8 R15: 0000000000000000 [ 56.810197] [ 56.811813] Uninit was stored to memory at: [ 56.816131] kmsan_internal_chain_origin+0x12b/0x210 [ 56.821233] kmsan_memcpy_origins+0x11d/0x170 [ 56.825721] __msan_memcpy+0x19f/0x1f0 [ 56.829606] skb_copy_bits+0x63a/0xdb0 [ 56.833487] __pskb_pull_tail+0x483/0x22e0 [ 56.837720] dccp_invalid_packet+0x352/0xf50 [ 56.842128] dccp_v4_rcv+0xf7/0x2630 [ 56.845848] ip_local_deliver_finish+0x6ed/0xd40 [ 56.850598] ip_local_deliver+0x43c/0x4e0 [ 56.854738] ip_rcv_finish+0x1253/0x16d0 [ 56.858792] ip_rcv+0x119d/0x16f0 [ 56.862243] __netif_receive_skb_core+0x47cf/0x4a80 [ 56.867253] process_backlog+0x62d/0xe20 [ 56.871308] net_rx_action+0x7c1/0x1a70 [ 56.875282] __do_softirq+0x56d/0x93d [ 56.879064] Uninit was created at: [ 56.882602] kmsan_alloc_meta_for_pages+0x161/0x3a0 [ 56.887610] kmsan_alloc_page+0x82/0xe0 [ 56.891581] __alloc_pages_nodemask+0xf5b/0x5dc0 [ 56.896330] alloc_pages_current+0x6b5/0x970 2018/04/09 14:48:12 executing program 4: perf_event_open(&(0x7f0000220000)={0x2, 0x78, 0x3e3}, 0x0, 0x0, 0xffffffffffffffff, 0x0) r0 = syz_open_procfs(0x0, &(0x7f0000000740)='net/fib_trie\x00') readv(r0, &(0x7f00000004c0)=[{&(0x7f00000001c0)=""/151, 0x97}, {&(0x7f0000000340)=""/112, 0x70}], 0x2) 2018/04/09 14:48:12 executing program 3: perf_event_open(&(0x7f0000220000)={0x2, 0x78, 0x3e3, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xffff7fffffffffff}, 0x0, 0x0, 0xffffffffffffffff, 0x0) r0 = socket$netlink(0x10, 0x3, 0x8000000004) writev(r0, &(0x7f0000e11ff0)=[{&(0x7f0000299f3e)="580000001400192340834b80040d8c5602067fffffff810000000000000058000b4824ca944f64009400050028925aa8000000000000008000f0fffeffff09000000fff5dd00000010000100000c0900fcff0000040e05a5", 0x58}], 0x1) [ 56.900730] skb_page_frag_refill+0x3ba/0x5e0 [ 56.905219] sk_page_frag_refill+0xa4/0x340 [ 56.909533] __ip_append_data+0x107e/0x3d10 [ 56.913846] ip_append_data+0x2fb/0x440 [ 56.917811] raw_sendmsg+0x287b/0x3ed0 [ 56.921694] inet_sendmsg+0x48d/0x740 [ 56.925489] SYSC_sendto+0x6c3/0x7e0 [ 56.929200] SyS_sendto+0x8a/0xb0 [ 56.932648] do_syscall_64+0x309/0x430 [ 56.936534] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 56.941706] ================================================================== [ 56.949056] Disabling lock debugging due to kernel taint [ 56.954499] Kernel panic - not syncing: panic_on_warn set ... [ 56.954499] [ 56.961870] CPU: 1 PID: 5042 Comm: syz-executor1 Tainted: G B 4.16.0+ #82 [ 56.970004] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.979354] Call Trace: [ 56.981935] [ 56.984086] dump_stack+0x185/0x1d0 [ 56.987715] panic+0x39d/0x940 [ 56.990929] ? dccp_invalid_packet+0x3b8/0xf50 [ 56.995511] kmsan_report+0x238/0x240 [ 56.999312] __msan_warning_32+0x6c/0xb0 2018/04/09 14:48:13 executing program 4: r0 = socket$inet6(0xa, 0x1, 0x0) set_mempolicy(0x1, &(0x7f0000000040), 0x1) setsockopt$inet6_IPV6_FLOWLABEL_MGR(r0, 0x29, 0x20, &(0x7f0000f5ffe0)={@loopback={0x0, 0x1}, 0x0, 0x0, 0x400000000000003, 0x10001}, 0x28) [ 57.003372] dccp_invalid_packet+0x3b8/0xf50 [ 57.007785] ? ip_local_deliver_finish+0x6ed/0xd40 [ 57.012710] ? ip_local_deliver_finish+0x6ed/0xd40 [ 57.017634] dccp_v4_rcv+0xf7/0x2630 [ 57.021348] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 57.027057] ? raw_local_deliver+0x1462/0x1470 [ 57.031642] ? ip_local_deliver_finish+0x4a5/0xd40 [ 57.036565] ? local_bh_enable+0x40/0x40 [ 57.040620] ? local_bh_enable+0x40/0x40 [ 57.044678] ip_local_deliver_finish+0x6ed/0xd40 [ 57.049441] ip_local_deliver+0x43c/0x4e0 [ 57.053585] ? ip_local_deliver+0x4e0/0x4e0 [ 57.057903] ? ip_call_ra_chain+0x7b0/0x7b0 [ 57.062220] ip_rcv_finish+0x1253/0x16d0 [ 57.066286] ip_rcv+0x119d/0x16f0 [ 57.069736] ? ip_rcv+0x16f0/0x16f0 [ 57.073372] __netif_receive_skb_core+0x47cf/0x4a80 [ 57.078387] ? try_to_wake_up+0x1ab2/0x20a0 [ 57.082720] ? kmsan_internal_memset_shadow_inline+0xd0/0xd0 [ 57.088522] ? ip_local_deliver_finish+0xd40/0xd40 [ 57.093456] process_backlog+0x62d/0xe20 [ 57.097522] ? rps_trigger_softirq+0x2f0/0x2f0 2018/04/09 14:48:13 executing program 4: r0 = socket$key(0xf, 0x3, 0x2) sendmsg$key(r0, &(0x7f0000f56000)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000333f88)={0x2, 0x3, 0x0, 0x9, 0xc, 0x0, 0x0, 0x0, [@sadb_x_sa2={0x2, 0x13, 0x2}, @sadb_address={0x3, 0x6, 0x0, 0x0, 0x0, @in={0x2, 0x0, @multicast1=0xe0000001}}, @sadb_sa={0x2, 0x1}, @sadb_address={0x3, 0x5, 0x0, 0x0, 0x0, @in={0x2, 0x0, @multicast1=0xe0000001}}]}, 0x60}, 0x1}, 0x0) [ 57.102103] net_rx_action+0x7c1/0x1a70 [ 57.106086] ? net_tx_action+0xab0/0xab0 [ 57.110151] __do_softirq+0x56d/0x93d [ 57.113959] do_softirq_own_stack+0x2a/0x40 [ 57.118274] [ 57.120514] __local_bh_enable_ip+0x114/0x140 [ 57.125011] local_bh_enable+0x36/0x40 [ 57.128899] ip_finish_output2+0x124e/0x1380 [ 57.133311] ip_finish_output+0xcb0/0xff0 [ 57.137464] ip_output+0x502/0x5c0 [ 57.140999] ? ip_mc_finish_output+0x3b0/0x3b0 [ 57.145584] ? ip_finish_output+0xff0/0xff0 [ 57.149901] ip_send_skb+0x5f3/0x820 [ 57.153613] ? __ip_local_out+0x5b0/0x5b0 [ 57.157765] ip_push_pending_frames+0x105/0x170 [ 57.162439] raw_sendmsg+0x2960/0x3ed0 [ 57.166346] ? compat_raw_ioctl+0x100/0x100 [ 57.170663] inet_sendmsg+0x48d/0x740 [ 57.174461] ? security_socket_sendmsg+0x9e/0x210 [ 57.179306] ? inet_getname+0x500/0x500 [ 57.183285] SYSC_sendto+0x6c3/0x7e0 [ 57.187001] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 57.192453] ? prepare_exit_to_usermode+0x149/0x3a0 [ 57.197485] SyS_sendto+0x8a/0xb0 [ 57.200936] do_syscall_64+0x309/0x430 [ 57.204824] ? SYSC_getpeername+0x560/0x560 [ 57.209147] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 57.214325] RIP: 0033:0x455259 [ 57.217509] RSP: 002b:00007f4989234c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 57.225216] RAX: ffffffffffffffda RBX: 00007f49892356d4 RCX: 0000000000455259 [ 57.232481] RDX: 000000000000000c RSI: 0000000020000100 RDI: 0000000000000013 [ 57.239750] RBP: 000000000072bea0 R08: 00000000200000c0 R09: 0000000000000010 [ 57.247017] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 57.254285] R13: 00000000000004f7 R14: 00000000006fa7c8 R15: 0000000000000000 [ 57.261981] Dumping ftrace buffer: [ 57.265498] (ftrace buffer empty) [ 57.269179] Kernel Offset: disabled [ 57.272777] Rebooting in 86400 seconds..