[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 21.301754] 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: [ 25.976772] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 26.451137] random: sshd: uninitialized urandom read (32 bytes read, 40 bits of entropy available) [ 27.400507] random: sshd: uninitialized urandom read (32 bytes read, 112 bits of entropy available) [ 27.570158] random: sshd: uninitialized urandom read (32 bytes read, 117 bits of entropy available) Warning: Permanently added '10.128.0.13' (ECDSA) to the list of known hosts. [ 32.963367] random: sshd: uninitialized urandom read (32 bytes read, 121 bits of entropy available) 2018/03/18 19:07:35 parsed 1 programs 2018/03/18 19:07:35 executed programs: 0 [ 33.309659] IPVS: Creating netns size=2552 id=1 [ 33.340724] audit: type=1400 audit(1521400055.997:5): avc: denied { create } for pid=3798 comm="syz-executor0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 [ 33.365880] audit: type=1400 audit(1521400056.017:6): avc: denied { write } for pid=3798 comm="syz-executor0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 [ 33.393448] kasan: CONFIG_KASAN_INLINE enabled [ 33.397843] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 33.411062] Dumping ftrace buffer: [ 33.414571] (ftrace buffer empty) [ 33.418263] Modules linked in: [ 33.421546] CPU: 1 PID: 3798 Comm: syz-executor0 Not tainted 4.4.120-gd63fdf6 #29 [ 33.429137] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.438466] task: ffff8801d8cbe000 task.stack: ffff8800a95e0000 [ 33.444494] RIP: 0010:[] [] netlink_unicast+0x1c0/0x760 [ 33.453169] RSP: 0018:ffff8800a95e76f8 EFLAGS: 00010293 [ 33.458590] RAX: dffffc0000000048 RBX: dffffc0000000000 RCX: ffffffff82f89d89 [ 33.465841] RDX: 0000000000000000 RSI: 00000000024000c0 RDI: ffff8801d9675d58 [ 33.473083] RBP: ffff8800a95e77b8 R08: ffffed001619e286 R09: ffffed001619e286 [ 33.480328] R10: 0000000000000004 R11: ffffed001619e285 R12: 0000000000000000 [ 33.487577] R13: dffffc0000000000 R14: ffff8801d9675c80 R15: dffffc0000000006 [ 33.494817] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000009c22900 [ 33.503011] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 33.508862] CR2: 00007ffe7d747fb8 CR3: 00000000a9414000 CR4: 0000000000160670 [ 33.516109] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.523350] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.530588] Stack: [ 33.532713] 1ffff100152bcee6 ffff8800b0cf1400 0000000000000240 0000000000000030 [ 33.540705] 1ffff100152bcee6 dffffc0000000048 0000000000000002 0000000041b58ab3 [ 33.548683] ffffffff84001503 ffffffff82f89bd0 ffff8801d9675c80 0000000000000000 [ 33.556854] Call Trace: [ 33.559413] [] ? netlink_attachskb+0x6c0/0x6c0 [ 33.565614] [] ? __nlmsg_put+0x14c/0x1b0 [ 33.571292] [] netlink_ack+0x231/0x4b0 [ 33.576815] [] nfnetlink_rcv+0xaa2/0x1070 [ 33.582582] [] netlink_unicast+0x522/0x760 [ 33.588435] [] ? netlink_unicast+0x44f/0x760 [ 33.594463] [] ? netlink_attachskb+0x6c0/0x6c0 [ 33.601272] [] netlink_sendmsg+0x8e8/0xc50 [ 33.607126] [] ? netlink_unicast+0x760/0x760 [ 33.613161] [] ? move_addr_to_kernel.part.12+0xc5/0x110 [ 33.620146] [] ? selinux_socket_sendmsg+0x3f/0x50 [ 33.626608] [] ? security_socket_sendmsg+0x89/0xb0 [ 33.633158] [] ? netlink_unicast+0x760/0x760 [ 33.639193] [] sock_sendmsg+0xca/0x110 [ 33.644700] [] ___sys_sendmsg+0x6c1/0x7c0 [ 33.650466] [] ? copy_msghdr_from_user+0x550/0x550 [ 33.657035] [] ? __alloc_pages_direct_compact+0x250/0x250 [ 33.664193] [] ? do_futex+0x3f4/0x15d0 [ 33.669699] [] ? __lock_is_held+0xa1/0xf0 [ 33.675466] [] ? exit_robust_list+0x240/0x240 [ 33.681581] [] ? do_huge_pmd_anonymous_page+0x549/0xa10 [ 33.688562] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 33.695286] [] ? __fget_light+0xa3/0x1e0 [ 33.700965] [] ? __fdget+0x18/0x20 [ 33.706125] [] ? sockfd_lookup_light+0x118/0x160 [ 33.712499] [] __sys_sendmsg+0xd3/0x190 [ 33.718102] [] ? SyS_shutdown+0x1b0/0x1b0 [ 33.723870] [] ? compat_SyS_futex+0x1f9/0x2a0 [ 33.729986] [] ? vmacache_update+0xfe/0x130 [ 33.735925] [] ? __do_page_fault+0x380/0xa00 [ 33.741953] [] compat_SyS_sendmsg+0x2a/0x40 [ 33.747892] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 33.754451] [] do_fast_syscall_32+0x321/0x8a0 [ 33.760573] [] sysenter_flags_fixed+0xd/0x17 [ 33.766597] Code: e7 6f 3d fe 48 8d 55 98 4c 89 e1 4c 89 f6 48 89 df e8 95 f7 ff ff 83 f8 01 0f 85 e1 03 00 00 e8 c7 6f 3d fe 48 8b 85 68 ff ff ff <0f> b6 00 84 c0 74 08 3c 03 0f 8e 63 05 00 00 41 80 3f 00 41 0f [ 33.793157] RIP [] netlink_unicast+0x1c0/0x760 [ 33.799475] RSP [ 33.803248] ---[ end trace eb744c4f3fc7db49 ]--- [ 33.807990] Kernel panic - not syncing: Fatal exception [ 33.813787] Dumping ftrace buffer: [ 33.817302] (ftrace buffer empty) [ 33.820979] Kernel Offset: disabled [ 33.824572] Rebooting in 86400 seconds..