[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 13.635350] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 19.487250] random: sshd: uninitialized urandom read (32 bytes read) [ 19.916621] random: sshd: uninitialized urandom read (32 bytes read) [ 20.994625] random: sshd: uninitialized urandom read (32 bytes read) [ 21.127318] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.27' (ECDSA) to the list of known hosts. [ 26.545072] random: sshd: uninitialized urandom read (32 bytes read) 2018/06/12 19:37:24 parsed 1 programs [ 27.565003] random: crng init done 2018/06/12 19:37:26 executed programs: 0 [ 29.155027] IPVS: Creating netns size=2536 id=1 [ 29.191583] IPVS: Creating netns size=2536 id=2 [ 29.223822] IPVS: Creating netns size=2536 id=3 [ 29.241903] IPVS: Creating netns size=2536 id=4 [ 29.276769] IPVS: Creating netns size=2536 id=5 [ 29.318854] IPVS: Creating netns size=2536 id=6 [ 29.370330] IPVS: Creating netns size=2536 id=7 [ 29.423846] IPVS: Creating netns size=2536 id=8 [ 29.496666] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 29.544841] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 29.756774] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 29.773499] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 29.782420] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 29.795698] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 29.815942] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 29.855217] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 29.870603] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 29.927464] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 29.977408] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 29.998476] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 30.016297] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 30.026288] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 30.043219] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 30.057722] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 30.073462] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 30.080835] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 30.101628] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 30.110571] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 30.119343] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 30.167079] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 30.177638] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 30.186841] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 30.238198] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 30.247709] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 30.279121] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 30.297382] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 30.315149] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 30.324422] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 30.335414] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 30.347784] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 30.356242] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 30.364979] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 30.384923] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 30.392782] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 30.408799] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 30.416610] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 30.431889] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 30.439372] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 30.455220] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 30.468271] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 30.482372] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 30.499200] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 30.516724] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 30.526874] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 30.536622] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 30.544564] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 30.553876] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 30.561282] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 30.568735] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 30.587363] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 30.597111] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 30.611694] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 30.624951] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 30.635190] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 30.645415] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 30.656134] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 30.666649] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 30.675257] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 30.684229] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 30.697163] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 30.704680] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 30.712980] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 30.720639] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 30.739079] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 30.752051] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 30.759297] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 30.774907] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 30.783972] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 30.792015] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 30.799419] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 30.808302] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 30.817661] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 30.827708] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 30.839023] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 30.848238] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 30.855893] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 30.864492] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 30.879105] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 30.886949] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 30.897754] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 30.905522] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 30.915509] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 30.931544] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 30.960791] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 30.995795] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 31.007721] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 31.016876] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 31.029303] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 31.041613] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 31.050321] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 33.207687] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 33.347292] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 33.357743] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 33.365558] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 33.527555] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 33.595794] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 33.610325] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 33.628304] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 33.650060] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 33.663422] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 33.669563] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 33.679608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 33.715145] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 33.725037] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 33.732478] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 33.759917] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 33.772797] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 33.780116] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 33.795760] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 33.804913] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 33.821979] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 33.841334] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 33.841378] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 33.841555] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 33.845057] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 33.860881] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 33.990261] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 34.001110] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 34.007827] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 34.023452] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 34.029762] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 34.039774] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready 2018/06/12 19:37:32 executed programs: 8 [ 35.172307] ------------[ cut here ]------------ [ 35.177157] WARNING: CPU: 0 PID: 6917 at net/core/dev.c:2473 skb_warn_bad_offload+0x2af/0x380 [ 35.185832] sit0: caps=(0x00000000803b7869, 0x0000000000000000) len=65081 data_len=65033 gso_size=1432 gso_type=2 ip_summed=0 [ 35.197279] Kernel panic - not syncing: panic_on_warn set ... [ 35.197279] [ 35.204630] CPU: 0 PID: 6917 Comm: syz-executor7 Not tainted 4.9.107-gdb2c520 #49 [ 35.212236] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.221578] ffff8801b8ee70c8 ffffffff81eb3da9 ffffffff83c48b40 00000000ffffffff [ 35.229629] 0000000000000000 0000000000000000 00000000000009a9 ffff8801b8ee7188 [ 35.237678] ffffffff81421925 0000000041b58ab3 ffffffff843b9b48 ffffffff81421766 [ 35.245715] Call Trace: [ 35.248292] [] dump_stack+0xc1/0x128 [ 35.253644] [] panic+0x1bf/0x3bc [ 35.258653] [] ? add_taint.cold.6+0x16/0x16 [ 35.264615] [] ? __warn.cold.9+0xa6/0x17f [ 35.270406] [] ? skb_warn_bad_offload+0x2af/0x380 [ 35.276888] [] __warn.cold.9+0xc1/0x17f [ 35.282501] [] warn_slowpath_fmt+0xc2/0x100 [ 35.288463] [] ? __warn+0x50/0x50 [ 35.293558] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 35.300475] [] ? ___ratelimit+0x53/0x401 [ 35.306201] [] skb_warn_bad_offload+0x2af/0x380 [ 35.312600] [] __skb_gso_segment+0x546/0x680 [ 35.318649] [] validate_xmit_skb+0x48e/0xab0 [ 35.324697] [] ? check_preemption_disabled+0x3b/0x170 [ 35.331527] [] ? check_preemption_disabled+0x3b/0x170 [ 35.338358] [] __dev_queue_xmit+0x888/0x2080 [ 35.344403] [] ? __dev_queue_xmit+0x1e2/0x2080 [ 35.350623] [] ? netdev_pick_tx+0x2c0/0x2c0 [ 35.356587] [] ? __lock_acquire+0x654/0x4070 [ 35.362638] [] ? nf_ct_deliver_cached_events+0x335/0x560 [ 35.369727] [] ? nf_ct_deliver_cached_events+0x83/0x560 [ 35.376732] [] ? check_preemption_disabled+0x3b/0x170 [ 35.383562] [] dev_queue_xmit+0x17/0x20 [ 35.389178] [] neigh_direct_output+0x15/0x20 [ 35.395230] [] ip6_finish_output2+0x8a8/0x1d00 [ 35.401452] [] ? ip6_finish_output2+0x157/0x1d00 [ 35.407848] [] ? ip6_sk_dst_lookup_flow+0x580/0x580 [ 35.414504] [] ? check_preemption_disabled+0x3b/0x170 [ 35.421431] [] ? ip6_mtu+0x217/0x340 [ 35.426786] [] ip6_finish_output+0x3b8/0x760 [ 35.432836] [] ip6_output+0x1f3/0x6e0 [ 35.438304] [] ? ip6_output+0x2f0/0x6e0 [ 35.443920] [] ? ip6_finish_output+0x760/0x760 [ 35.450143] [] ? ip6_fragment+0x3380/0x3380 [ 35.456106] [] ? xfrm_lookup_route+0x54/0x1b0 [ 35.462239] [] ip6_local_out+0x9b/0x180 [ 35.467857] [] ip6_send_skb+0xa1/0x340 [ 35.473382] [] udp_v6_send_skb+0x5ba/0xe70 [ 35.479257] [] udpv6_sendmsg+0x1ebb/0x2430 [ 35.485155] [] ? ip_reply_glue_bits+0xb0/0xb0 [ 35.491289] [] ? udp6_lib_lookup+0x100/0x100 [ 35.497339] [] ? udp_seq_next+0x80/0x80 [ 35.502955] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 35.509268] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 35.516111] [] ? release_sock+0x14e/0x1c0 [ 35.521902] [] inet_sendmsg+0x203/0x4d0 [ 35.527519] [] ? inet_sendmsg+0x73/0x4d0 [ 35.533223] [] ? inet_recvmsg+0x4c0/0x4c0 [ 35.539013] [] sock_sendmsg+0xcc/0x110 [ 35.544537] [] SYSC_sendto+0x21c/0x370 [ 35.550065] [] ? SYSC_connect+0x300/0x300 [ 35.555857] [] ? __lock_is_held+0xa2/0xf0 [ 35.561645] [] ? check_preemption_disabled+0x3b/0x170 [ 35.568474] [] ? __fd_install+0x20f/0x5d0 [ 35.574259] [] ? __fd_install+0x24a/0x5d0 [ 35.580046] [] ? get_unused_fd_flags+0xd0/0xd0 [ 35.586292] [] ? compat_SyS_futex+0x1e1/0x2f0 [ 35.592446] [] ? fd_install+0x4d/0x60 [ 35.597887] [] ? compat_SyS_get_robust_list+0x310/0x310 [ 35.604888] [] ? SyS_socket+0x121/0x1b0 [ 35.610504] [] ? move_addr_to_kernel+0x50/0x50 [ 35.616726] [] SyS_sendto+0x40/0x50 [ 35.621995] [] ? SyS_getpeername+0x30/0x30 [ 35.627856] [] do_fast_syscall_32+0x2f7/0x870 [ 35.633984] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.640622] [] entry_SYSENTER_compat+0x90/0xa2 [ 35.647410] Dumping ftrace buffer: [ 35.650981] (ftrace buffer empty) [ 35.654664] Kernel Offset: disabled [ 35.658268] Rebooting in 86400 seconds..