[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [[ 20.678917] random: sshd: uninitialized urandom read (32 bytes read, 34 bits of entropy available) ....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [ 20.976367] random: sshd: uninitialized urandom read (32 bytes read, 34 bits of entropy available) [ 21.232317] random: sshd: uninitialized urandom read (32 bytes read, 36 bits of entropy available) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 22.226857] random: sshd: uninitialized urandom read (32 bytes read, 116 bits of entropy available) [ 30.349887] random: sshd: uninitialized urandom read (32 bytes read, 124 bits of entropy available) [ 32.028806] random: nonblocking pool is initialized Warning: Permanently added '10.128.0.44' (ECDSA) to the list of known hosts. executing program [ 36.525175] syzkaller130919 uses obsolete (PF_INET,SOCK_PACKET) [ 36.533363] ------------[ cut here ]------------ [ 36.538116] WARNING: CPU: 1 PID: 3866 at net/ipv6/ip6_fib.c:1315 fib6_repair_tree+0x558/0x790() [ 36.547017] Kernel panic - not syncing: panic_on_warn set ... [ 36.547017] [ 36.554353] CPU: 1 PID: 3866 Comm: syzkaller130919 Not tainted 4.4.114-gfe09418 #3 [ 36.562031] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.571357] 0000000000000000 e3c323b17f31ccf1 ffff8801d999f2f0 ffffffff81d02e6d [ 36.579320] ffffffff83843a40 ffff8801d999f3c8 ffffffff83d10c80 0000000000000009 [ 36.587279] 0000000000000523 ffff8801d999f3b8 ffffffff8141a1da 0000000041b58ab3 [ 36.595253] Call Trace: [ 36.597811] [] dump_stack+0xc1/0x124 [ 36.603147] [] panic+0x1aa/0x388 [ 36.608131] [] ? percpu_up_read.constprop.45+0xe1/0xe1 [ 36.615027] [] ? pm_qos_get_value.part.4+0xb/0xb [ 36.621404] [] ? fib6_walk+0xaf/0xd0 [ 36.626740] [] ? warn_slowpath_common+0x10a/0x140 [ 36.633200] [] warn_slowpath_common+0x125/0x140 [ 36.639487] [] ? fib6_repair_tree+0x558/0x790 [ 36.645601] [] warn_slowpath_null+0x29/0x30 [ 36.651539] [] fib6_repair_tree+0x558/0x790 [ 36.657479] [] fib6_del+0x85f/0xa00 [ 36.662732] [] fib6_clean_node+0x33a/0x4e0 [ 36.668582] [] ? fib6_del+0xa00/0xa00 [ 36.674003] [] ? mark_held_locks+0xaf/0x100 [ 36.679941] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 36.686229] [] fib6_walk_continue+0x39b/0x620 [ 36.692343] [] fib6_walk+0x89/0xd0 [ 36.697502] [] fib6_clean_tree+0xe2/0x130 [ 36.703267] [] ? fib6_remove_prefsrc+0x240/0x240 [ 36.709641] [] ? fib6_walk+0xd0/0xd0 [ 36.714972] [] ? fib6_del+0xa00/0xa00 [ 36.720389] [] ? fib6_remove_prefsrc+0x240/0x240 [ 36.727241] [] ? get_parent_ip+0xd/0x50 [ 36.732846] [] __fib6_clean_all+0xfe/0x230 [ 36.738708] [] ? fib6_purge_rt+0x2c0/0x2c0 [ 36.744576] [] ? fib6_remove_prefsrc+0x240/0x240 [ 36.750950] [] ? fib6_remove_prefsrc+0x240/0x240 [ 36.757334] [] fib6_clean_all+0x27/0x30 [ 36.762928] [] rt6_ifdown+0xa1/0x850 [ 36.768259] [] ? _raw_spin_unlock_irqrestore+0x45/0x70 [ 36.775152] [] ? rt6_clean_tohost+0x30/0x30 [ 36.781105] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 36.788086] [] ? mark_held_locks+0xaf/0x100 [ 36.794029] [] ? check_preemption_disabled+0x3b/0x200 [ 36.800847] [] addrconf_ifdown+0x75/0xa00 [ 36.806634] [] addrconf_notify+0x76a/0x1b80 [ 36.812581] [] ? pktgen_device_event+0x147/0x6c0 [ 36.818965] [] ? inet6_ifinfo_notify+0x140/0x140 [ 36.825345] [] ? pktgen_device_event+0x464/0x6c0 [ 36.831721] [] ? ip_vs_dst_event+0x251/0x660 [ 36.837749] [] ? ip6mr_device_event+0x27/0x1d0 [ 36.843962] [] notifier_call_chain+0x95/0x1b0 [ 36.850076] [] raw_notifier_call_chain+0x2d/0x40 [ 36.856461] [] call_netdevice_notifiers_info+0x51/0x90 [ 36.863357] [] dev_set_mtu+0x216/0x3b0 [ 36.868860] [] ? netdev_features_change+0xa0/0xa0 [ 36.875329] [] ? full_name_hash+0x67/0x90 [ 36.881098] [] dev_ifsioc+0x450/0x800 [ 36.886517] [] ? register_gifconf+0x60/0x60 [ 36.892458] [] ? dev_load+0x84/0x1a0 [ 36.897792] [] dev_ioctl+0x1c3/0xce0 [ 36.903129] [] ? check_preemption_disabled+0x3b/0x200 [ 36.909938] [] ? dev_load+0x1a0/0x1a0 [ 36.915378] [] ? do_huge_pmd_anonymous_page+0x549/0xa10 [ 36.922364] [] ? _raw_spin_unlock+0x2c/0x50 [ 36.928303] [] ? do_huge_pmd_anonymous_page+0x3dd/0xa10 [ 36.935288] [] sock_do_ioctl+0x94/0xb0 [ 36.940805] [] sock_ioctl+0x2e0/0x3d0 [ 36.946240] [] ? compat_ifr_data_ioctl+0x180/0x180 [ 36.952798] [] do_vfs_ioctl+0x7aa/0xee0 [ 36.958391] [] ? ioctl_preallocate+0x1f0/0x1f0 [ 36.964596] [] ? __do_page_fault+0x380/0xa00 [ 36.970630] [] ? security_file_ioctl+0x89/0xb0 [ 36.976844] [] SyS_ioctl+0x8f/0xc0 [ 36.982009] [] entry_SYSCALL_64_fastpath+0x1c/0x98 [ 36.989066] Dumping ftrace buffer: [ 36.992641] (ftrace buffer empty) [ 36.996327] Kernel Offset: disabled [ 36.999947] Rebooting in 86400 seconds..