[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [ 10.577472] random: sshd: uninitialized urandom read (32 bytes read) [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 16.757054] random: sshd: uninitialized urandom read (32 bytes read) [ 16.765944] random: crng init done Warning: Permanently added '10.128.0.171' (ECDSA) to the list of known hosts. 2019/09/06 09:29:27 parsed 1 programs 2019/09/06 09:29:29 executed programs: 0 [ 25.408924] audit: type=1400 audit(1567762169.918:5): avc: denied { associate } for pid=2062 comm="syz-executor.0" name="syz0" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 [ 25.455494] ------------[ cut here ]------------ [ 25.460407] WARNING: CPU: 0 PID: 2215 at net/xfrm/xfrm_policy.c:797 xfrm_policy_insert+0x701/0x1140 [ 25.470116] Kernel panic - not syncing: panic_on_warn set ... [ 25.470116] [ 25.477479] CPU: 0 PID: 2215 Comm: syz-executor.0 Not tainted 4.9.141+ #1 [ 25.484395] ffff8801ca9ef398 ffffffff81b42e79 ffffffff82a38ce0 00000000ffffffff [ 25.492706] ffffffff82cb8900 0000000000000000 0000000000000009 ffff8801ca9ef458 [ 25.500736] ffffffff813f7125 0000000041b58ab3 ffffffff82e2b62b ffffffff813f6f66 [ 25.508755] Call Trace: [ 25.511342] [] dump_stack+0xc1/0x128 [ 25.516714] [] panic+0x1bf/0x39f [ 25.521714] [] ? add_taint.cold.5+0x16/0x16 [ 25.527684] [] ? __warn.cold.8+0x14/0x2f [ 25.533402] [] ? xfrm_policy_insert+0x701/0x1140 [ 25.539803] [] __warn.cold.8+0x2f/0x2f [ 25.545325] [] warn_slowpath_null+0x2c/0x40 [ 25.551279] [] xfrm_policy_insert+0x701/0x1140 [ 25.557491] [] xfrm_add_policy+0x248/0x4f0 [ 25.563360] [] ? xfrm_add_acquire+0x9b0/0x9b0 [ 25.569492] [] ? ns_capable_common+0x12a/0x150 [ 25.575708] [] ? validate_nla+0x1bb/0x4b0 [ 25.581488] [] ? nla_parse+0x1d3/0x240 [ 25.587007] [] ? xfrm_add_acquire+0x9b0/0x9b0 [ 25.593132] [] xfrm_user_rcv_msg+0x3c4/0x640 [ 25.599171] [] ? xfrm_dump_sa_done+0xe0/0xe0 [ 25.605243] [] ? avc_has_perm+0x1cc/0x3a0 [ 25.611036] [] ? avc_has_perm+0x9e/0x3a0 [ 25.616734] [] ? trace_hardirqs_on+0x10/0x10 [ 25.622795] [] ? check_preemption_disabled+0x3b/0x200 [ 25.629627] [] netlink_rcv_skb+0x145/0x370 [ 25.635605] [] ? xfrm_dump_sa_done+0xe0/0xe0 [ 25.641652] [] xfrm_netlink_rcv+0x6f/0x90 [ 25.647435] [] netlink_unicast+0x4d8/0x6d0 [ 25.653325] [] ? netlink_sendskb+0x50/0x50 [ 25.659193] [] netlink_sendmsg+0x694/0xc30 [ 25.665064] [] ? nlmsg_notify+0x140/0x140 [ 25.670884] [] ? selinux_socket_sendmsg+0x3f/0x50 [ 25.677360] [] ? security_socket_sendmsg+0x8f/0xc0 [ 25.683933] [] ? nlmsg_notify+0x140/0x140 [ 25.689714] [] sock_sendmsg+0xbb/0x110 [ 25.695251] [] ___sys_sendmsg+0x6fc/0x840 [ 25.701030] [] ? trace_hardirqs_on+0x10/0x10 [ 25.707068] [] ? copy_msghdr_from_user+0x530/0x530 [ 25.713642] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 25.720391] [] ? check_preemption_disabled+0x3b/0x200 [ 25.727213] [] ? check_preemption_disabled+0x3b/0x200 [ 25.734040] [] ? __fget+0x214/0x3d0 [ 25.739349] [] ? __fget+0x23b/0x3d0 [ 25.744611] [] ? __fget+0x47/0x3d0 [ 25.749789] [] ? __fget_light+0x169/0x1f0 [ 25.755587] [] ? __fdget+0x18/0x20 [ 25.760777] [] ? sockfd_lookup_light+0xb6/0x160 [ 25.767106] [] __sys_sendmsg+0xd9/0x190 [ 25.772730] [] ? SyS_shutdown+0x1b0/0x1b0 [ 25.778529] [] ? SyS_clock_settime+0x220/0x220 [ 25.784759] [] SyS_sendmsg+0x2d/0x50 [ 25.790118] [] ? __sys_sendmsg+0x190/0x190 [ 25.795996] [] do_syscall_64+0x19f/0x550 [ 25.801711] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 25.809455] Kernel Offset: disabled [ 25.813158] Rebooting in 86400 seconds..