[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [ 10.226078] random: sshd: uninitialized urandom read (32 bytes read) [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 23.176354] random: sshd: uninitialized urandom read (32 bytes read) [ 23.353472] random: crng init done Warning: Permanently added '10.128.0.68' (ECDSA) to the list of known hosts. 2019/09/14 04:45:48 parsed 1 programs 2019/09/14 04:45:49 executed programs: 0 [ 31.560928] audit: type=1400 audit(1568436349.966:5): avc: denied { associate } for pid=2069 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 [ 31.598030] netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. [ 31.607784] netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. [ 31.623561] netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. [ 31.633064] netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. [ 31.647913] netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. [ 31.657246] netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. [ 31.671697] netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. [ 31.681095] netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. [ 31.696579] netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. [ 31.705874] netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. [ 32.789355] ------------[ cut here ]------------ [ 32.794215] WARNING: CPU: 0 PID: 2718 at net/xfrm/xfrm_policy.c:797 xfrm_policy_insert+0x701/0x1140 [ 32.803418] Kernel panic - not syncing: panic_on_warn set ... [ 32.803418] [ 32.810805] CPU: 0 PID: 2718 Comm: syz-executor.0 Not tainted 4.9.141+ #1 [ 32.817711] ffff8801d2807398 ffffffff81b42e79 ffffffff82a38ce0 00000000ffffffff [ 32.827211] ffffffff82cb8900 0000000000000000 0000000000000009 ffff8801d2807458 [ 32.835272] ffffffff813f7125 0000000041b58ab3 ffffffff82e2b62b ffffffff813f6f66 [ 32.843329] Call Trace: [ 32.845908] [] dump_stack+0xc1/0x128 [ 32.851256] [] panic+0x1bf/0x39f [ 32.856264] [] ? add_taint.cold.5+0x16/0x16 [ 32.862215] [] ? __warn.cold.8+0x14/0x2f [ 32.867906] [] ? xfrm_policy_insert+0x701/0x1140 [ 32.874286] [] __warn.cold.8+0x2f/0x2f [ 32.879821] [] warn_slowpath_null+0x2c/0x40 [ 32.885783] [] xfrm_policy_insert+0x701/0x1140 [ 32.892009] [] xfrm_add_policy+0x248/0x4f0 [ 32.897896] [] ? xfrm_add_acquire+0x9b0/0x9b0 [ 32.904028] [] ? ns_capable_common+0x12a/0x150 [ 32.910244] [] ? validate_nla+0x1bb/0x4b0 [ 32.916070] [] ? nla_parse+0x1d3/0x240 [ 32.921590] [] ? xfrm_add_acquire+0x9b0/0x9b0 [ 32.927721] [] xfrm_user_rcv_msg+0x3c4/0x640 [ 32.933761] [] ? xfrm_dump_sa_done+0xe0/0xe0 [ 32.939905] [] ? avc_has_perm+0x1cc/0x3a0 [ 32.945681] [] ? avc_has_perm+0x9e/0x3a0 [ 32.951382] [] ? trace_hardirqs_on+0x10/0x10 [ 32.957427] [] ? check_preemption_disabled+0x3b/0x200 [ 32.964247] [] netlink_rcv_skb+0x145/0x370 [ 32.970127] [] ? xfrm_dump_sa_done+0xe0/0xe0 [ 32.976163] [] xfrm_netlink_rcv+0x6f/0x90 [ 32.981960] [] netlink_unicast+0x4d8/0x6d0 [ 32.987825] [] ? netlink_sendskb+0x50/0x50 [ 32.993710] [] netlink_sendmsg+0x694/0xc30 [ 32.999599] [] ? nlmsg_notify+0x140/0x140 [ 33.005381] [] ? selinux_socket_sendmsg+0x3f/0x50 [ 33.011864] [] ? security_socket_sendmsg+0x8f/0xc0 [ 33.018440] [] ? nlmsg_notify+0x140/0x140 [ 33.024225] [] sock_sendmsg+0xbb/0x110 [ 33.029753] [] ___sys_sendmsg+0x6fc/0x840 [ 33.035533] [] ? trace_hardirqs_on+0x10/0x10 [ 33.041567] [] ? copy_msghdr_from_user+0x530/0x530 [ 33.048148] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 33.054891] [] ? check_preemption_disabled+0x3b/0x200 [ 33.061707] [] ? check_preemption_disabled+0x3b/0x200 [ 33.068569] [] ? __fget+0x214/0x3d0 [ 33.073821] [] ? __fget+0x23b/0x3d0 [ 33.079076] [] ? __fget+0x47/0x3d0 [ 33.084245] [] ? __fget_light+0x169/0x1f0 [ 33.090020] [] ? __fdget+0x18/0x20 [ 33.095187] [] ? sockfd_lookup_light+0xb6/0x160 [ 33.101490] [] __sys_sendmsg+0xd9/0x190 [ 33.107090] [] ? SyS_shutdown+0x1b0/0x1b0 [ 33.112954] [] ? SyS_clock_settime+0x220/0x220 [ 33.119162] [] SyS_sendmsg+0x2d/0x50 [ 33.124499] [] ? __sys_sendmsg+0x190/0x190 [ 33.130385] [] do_syscall_64+0x19f/0x550 [ 33.136081] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 33.143642] Kernel Offset: disabled [ 33.147266] Rebooting in 86400 seconds..