[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 21.627812] random: sshd: uninitialized urandom read (32 bytes read, 33 bits of entropy available) [?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 25.548442] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 26.032034] random: sshd: uninitialized urandom read (32 bytes read, 40 bits of entropy available) [ 27.075545] random: sshd: uninitialized urandom read (32 bytes read, 120 bits of entropy available) [ 27.231387] random: sshd: uninitialized urandom read (32 bytes read, 123 bits of entropy available) Warning: Permanently added '10.128.10.50' (ECDSA) to the list of known hosts. [ 32.690140] random: sshd: uninitialized urandom read (32 bytes read, 128 bits of entropy available) 2018/04/30 15:57:29 parsed 1 programs 2018/04/30 15:57:29 executed programs: 0 [ 33.179386] IPVS: Creating netns size=2552 id=1 [ 33.242529] IPVS: Creating netns size=2552 id=2 [ 33.277328] IPVS: Creating netns size=2552 id=3 [ 33.356694] IPVS: Creating netns size=2552 id=4 [ 33.495072] IPVS: Creating netns size=2552 id=5 [ 33.640935] IPVS: Creating netns size=2552 id=6 [ 33.738753] IPVS: Creating netns size=2552 id=7 [ 33.809071] IPVS: Creating netns size=2552 id=8 [ 33.887873] random: nonblocking pool is initialized 2018/04/30 15:57:34 executed programs: 365 [ 40.930670] ------------[ cut here ]------------ [ 40.935493] WARNING: CPU: 0 PID: 6102 at net/xfrm/xfrm_policy.c:765 xfrm_policy_insert+0x60f/0xed0() [ 40.944920] Kernel panic - not syncing: panic_on_warn set ... [ 40.944920] [ 40.952283] CPU: 0 PID: 6102 Comm: syz-executor0 Not tainted 4.4.130-g12ef385 #28 [ 40.959900] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.969244] 0000000000000000 6919c93cbc87b374 ffff8801d6b2f420 ffffffff81e0dc6d [ 40.977286] ffffffff83a43ec0 ffff8800b8c2e000 ffffffff83f22f20 0000000000000009 [ 40.985323] 00000000000002fd ffff8801d6b2f4e0 ffffffff81409ec4 0000000041b58ab3 [ 40.993354] Call Trace: [ 40.995935] [] dump_stack+0xc1/0x124 [ 41.001304] [] panic+0x19e/0x38d [ 41.006316] [] ? add_taint.cold.4+0x16/0x16 [ 41.012279] [] ? warn_slowpath_common.cold.6+0x5/0x20 [ 41.019115] [] warn_slowpath_common.cold.6+0x20/0x20 [ 41.025859] [] ? xfrm_policy_insert+0x60f/0xed0 [ 41.032178] [] warn_slowpath_null+0x29/0x30 [ 41.038236] [] xfrm_policy_insert+0x60f/0xed0 [ 41.044371] [] xfrm_add_policy+0x248/0x500 [ 41.050245] [] ? xfrm_add_acquire+0x9d0/0x9d0 [ 41.056379] [] ? ns_capable_common+0x12a/0x150 [ 41.062610] [] ? memset+0x31/0x40 [ 41.067708] [] ? nla_parse+0x1d3/0x240 [ 41.073237] [] ? xfrm_add_acquire+0x9d0/0x9d0 [ 41.079369] [] xfrm_user_rcv_msg+0x3d6/0x6c0 [ 41.085444] [] ? xfrm_dump_sa_done+0xa0/0xa0 [ 41.091501] [] ? debug_check_no_locks_freed+0x210/0x210 [ 41.098511] [] netlink_rcv_skb+0x145/0x370 [ 41.104390] [] ? xfrm_dump_sa_done+0xa0/0xa0 [ 41.110441] [] xfrm_netlink_rcv+0x6f/0x90 [ 41.116236] [] netlink_unicast+0x4e9/0x700 [ 41.122114] [] ? netlink_attachskb+0x6a0/0x6a0 [ 41.128344] [] netlink_sendmsg+0x78b/0xc10 [ 41.134220] [] ? netlink_unicast+0x700/0x700 [ 41.140281] [] ? selinux_socket_sendmsg+0x3f/0x50 [ 41.146770] [] ? security_socket_sendmsg+0x8f/0xc0 [ 41.153356] [] ? netlink_unicast+0x700/0x700 [ 41.159411] [] sock_sendmsg+0xcc/0x110 [ 41.164941] [] ___sys_sendmsg+0x745/0x880 [ 41.170732] [] ? copy_msghdr_from_user+0x550/0x550 [ 41.177321] [] ? do_futex+0x12d/0x1770 [ 41.182858] [] ? __fget+0x148/0x3b0 [ 41.188138] [] ? __fget+0x16f/0x3b0 [ 41.193546] [] ? __fget+0x47/0x3b0 [ 41.198818] [] ? __fget_light+0x9f/0x1f0 [ 41.204528] [] ? __fdget+0x18/0x20 [ 41.209716] [] __sys_sendmsg+0xd6/0x190 [ 41.215339] [] ? SyS_shutdown+0x1b0/0x1b0 [ 41.221132] [] ? SyS_futex+0x1f8/0x300 [ 41.226666] [] ? SyS_sched_getscheduler+0x86/0x1e0 [ 41.233329] [] SyS_sendmsg+0x2d/0x50 [ 41.238692] [] entry_SYSCALL_64_fastpath+0x22/0x9e [ 41.245988] Dumping ftrace buffer: [ 41.249581] (ftrace buffer empty) [ 41.253271] Kernel Offset: disabled [ 41.256888] Rebooting in 86400 seconds..