[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 19.012521] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available) [?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 21.861774] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 22.031492] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 22.981554] random: sshd: uninitialized urandom read (32 bytes read, 115 bits of entropy available) [ 23.149076] random: sshd: uninitialized urandom read (32 bytes read, 119 bits of entropy available) Warning: Permanently added '10.128.0.56' (ECDSA) to the list of known hosts. [ 28.501274] random: sshd: uninitialized urandom read (32 bytes read, 123 bits of entropy available) 2018/03/17 10:40:37 parsed 1 programs 2018/03/17 10:40:37 executed programs: 0 [ 28.856731] IPVS: Creating netns size=2552 id=1 [ 28.887119] audit: type=1400 audit(1521283237.585:5): avc: denied { create } for pid=3793 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 [ 28.912213] audit: type=1400 audit(1521283237.615:6): avc: denied { write } for pid=3793 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 [ 28.939743] kasan: CONFIG_KASAN_INLINE enabled [ 28.944281] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 28.957121] Dumping ftrace buffer: [ 28.960644] (ftrace buffer empty) [ 28.964329] Modules linked in: [ 28.967606] CPU: 1 PID: 3793 Comm: syz-executor0 Not tainted 4.4.120-gd63fdf6 #29 [ 28.975194] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.984518] task: ffff8800ab950000 task.stack: ffff8800bb1b8000 [ 28.990540] RIP: 0010:[] [] netlink_unicast+0x1c0/0x760 [ 28.999219] RSP: 0018:ffff8800bb1bf6f8 EFLAGS: 00010293 [ 29.004634] RAX: dffffc0000000048 RBX: dffffc0000000000 RCX: ffffffff82f89d89 [ 29.011871] RDX: 0000000000000000 RSI: 00000000024000c0 RDI: ffff8800b36ac218 [ 29.019108] RBP: ffff8800bb1bf7b8 R08: ffffed003923d146 R09: ffffed003923d146 [ 29.026355] R10: 0000000000000004 R11: ffffed003923d145 R12: 0000000000000000 [ 29.033597] R13: dffffc0000000000 R14: ffff8800b36ac140 R15: dffffc0000000006 [ 29.040840] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:000000000a1af900 [ 29.049033] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 29.054884] CR2: 00007ffc38b82d90 CR3: 00000000b37e6000 CR4: 0000000000160670 [ 29.062133] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.069372] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.076611] Stack: [ 29.078727] 1ffff10017637ee6 ffff8801c91e8a00 0000000000000240 0000000000000030 [ 29.086691] 1ffff10017637ee6 dffffc0000000048 0000000000000002 0000000041b58ab3 [ 29.094651] ffffffff84001503 ffffffff82f89bd0 ffff8800b36ac140 0000000000000000 [ 29.102618] Call Trace: [ 29.105179] [] ? netlink_attachskb+0x6c0/0x6c0 [ 29.111387] [] ? __nlmsg_put+0x14c/0x1b0 [ 29.117072] [] netlink_ack+0x231/0x4b0 [ 29.122578] [] nfnetlink_rcv+0xaa2/0x1070 [ 29.128342] [] netlink_unicast+0x522/0x760 [ 29.134197] [] ? netlink_unicast+0x44f/0x760 [ 29.140221] [] ? netlink_attachskb+0x6c0/0x6c0 [ 29.146437] [] netlink_sendmsg+0x8e8/0xc50 [ 29.152312] [] ? netlink_unicast+0x760/0x760 [ 29.158357] [] ? move_addr_to_kernel.part.12+0xc5/0x110 [ 29.165356] [] ? selinux_socket_sendmsg+0x3f/0x50 [ 29.171817] [] ? security_socket_sendmsg+0x89/0xb0 [ 29.178367] [] ? netlink_unicast+0x760/0x760 [ 29.184397] [] sock_sendmsg+0xca/0x110 [ 29.189925] [] ___sys_sendmsg+0x6c1/0x7c0 [ 29.189935] [] ? copy_msghdr_from_user+0x550/0x550 [ 29.189943] [] ? __alloc_pages_direct_compact+0x250/0x250 [ 29.189951] [] ? do_futex+0x3f4/0x15d0 [ 29.189958] [] ? __lock_is_held+0xa1/0xf0 [ 29.189964] [] ? exit_robust_list+0x240/0x240 [ 29.189973] [] ? do_huge_pmd_anonymous_page+0x549/0xa10 [ 29.189981] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 29.189988] [] ? __fget_light+0xa3/0x1e0 [ 29.189994] [] ? __fdget+0x18/0x20 [ 29.190000] [] ? sockfd_lookup_light+0x118/0x160 [ 29.190007] [] __sys_sendmsg+0xd3/0x190 [ 29.190013] [] ? SyS_shutdown+0x1b0/0x1b0 [ 29.190019] [] ? compat_SyS_futex+0x1f9/0x2a0 [ 29.190026] [] ? vmacache_update+0xfe/0x130 [ 29.190034] [] ? __do_page_fault+0x380/0xa00 [ 29.190042] [] compat_SyS_sendmsg+0x2a/0x40 [ 29.190047] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 29.190054] [] do_fast_syscall_32+0x321/0x8a0 [ 29.190063] [] sysenter_flags_fixed+0xd/0x17 [ 29.190151] 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 [ 29.190160] RIP [] netlink_unicast+0x1c0/0x760 [ 29.190162] RSP [ 29.195596] ---[ end trace 549fc3e507f51b68 ]--- [ 29.195601] Kernel panic - not syncing: Fatal exception [ 29.196153] Dumping ftrace buffer: [ 29.196157] (ftrace buffer empty) [ 29.196160] Kernel Offset: disabled [ 29.361644] Rebooting in 86400 seconds..