[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 14.120663] random: sshd: uninitialized urandom read (32 bytes read, 33 bits of entropy available) [?25l[?1c7[ ok 8[?25h[?0c. [ 14.547454] random: sshd: uninitialized urandom read (32 bytes read, 33 bits of entropy available) [ 14.885795] random: sshd: uninitialized urandom read (32 bytes read, 34 bits of entropy available) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 15.668446] random: sshd: uninitialized urandom read (32 bytes read, 93 bits of entropy available) [ 15.833002] random: sshd: uninitialized urandom read (32 bytes read, 97 bits of entropy available) Warning: Permanently added 'ci-android-44-kasan-gce-4,10.128.15.242' (ECDSA) to the list of known hosts. [ 21.203316] random: sshd: uninitialized urandom read (32 bytes read, 106 bits of entropy available) executing program [ 21.294671] audit: type=1400 audit(1513696103.002:5): avc: denied { create } for pid=3305 comm="syzkaller184090" 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 [ 21.319600] audit: type=1400 audit(1513696103.032:6): avc: denied { write } for pid=3305 comm="syzkaller184090" path="socket:[7936]" dev="sockfs" ino=7936 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 [ 21.347651] kasan: CONFIG_KASAN_INLINE enabled [ 21.352884] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 21.365669] Dumping ftrace buffer: [ 21.369169] (ftrace buffer empty) [ 21.372843] Modules linked in: [ 21.376109] CPU: 0 PID: 3305 Comm: syzkaller184090 Not tainted 4.4.106-g1700518 #9 [ 21.383775] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 21.393090] task: ffff8800b4ec2f80 task.stack: ffff8800b4130000 [ 21.399110] RIP: 0010:[] [] netlink_unicast+0x1c0/0x760 [ 21.407764] RSP: 0018:ffff8800b41377f8 EFLAGS: 00010293 [ 21.413175] RAX: dffffc0000000048 RBX: dffffc0000000000 RCX: ffffffff82f84109 [ 21.420411] RDX: 0000000000000000 RSI: 00000000024000c0 RDI: ffff8800b08865d8 [ 21.427643] RBP: ffff8800b41378b8 R08: ffffed0016b9e197 R09: ffffed0016b9e197 [ 21.434882] R10: 0000000000000005 R11: ffffed0016b9e196 R12: 0000000000000000 [ 21.442114] R13: dffffc0000000000 R14: ffff8800b0886500 R15: dffffc0000000006 [ 21.449350] FS: 0000000000da3880(0063) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 21.457537] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.463384] CR2: 0000000020f81000 CR3: 00000000b119d000 CR4: 00000000001406f0 [ 21.470620] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.477853] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.485083] Stack: [ 21.487202] 1ffff10016826f06 ffff8800b5cf0c80 0000000000000240 0000000000000030 [ 21.495147] 1ffff10016826f06 dffffc0000000048 0000000000000ce9 0000000041b58ab3 [ 21.503085] ffffffff83ffd4e6 ffffffff82f83f50 ffff8800b4137870 0000000000000000 [ 21.511025] Call Trace: [ 21.513585] [] ? netlink_attachskb+0x6c0/0x6c0 [ 21.519781] [] ? __nlmsg_put+0x14c/0x1b0 [ 21.525453] [] netlink_ack+0x231/0x4b0 [ 21.530955] [] nfnetlink_rcv+0xaa2/0x1070 [ 21.536719] [] netlink_unicast+0x522/0x760 [ 21.542567] [] ? netlink_unicast+0x44f/0x760 [ 21.548586] [] ? netlink_attachskb+0x6c0/0x6c0 [ 21.554779] [] netlink_sendmsg+0x8e8/0xc50 [ 21.560627] [] ? netlink_unicast+0x760/0x760 [ 21.566647] [] ? selinux_socket_sendmsg+0x3f/0x50 [ 21.573106] [] ? security_socket_sendmsg+0x89/0xb0 [ 21.579649] [] ? netlink_unicast+0x760/0x760 [ 21.585669] [] sock_sendmsg+0xca/0x110 [ 21.591176] [] sock_write_iter+0x226/0x3b0 [ 21.597028] [] ? avc_has_perm_noaudit+0x460/0x460 [ 21.603481] [] ? sock_sendmsg+0x110/0x110 [ 21.609243] [] ? iov_iter_init+0xaf/0x1d0 [ 21.615002] [] __vfs_write+0x33c/0x450 [ 21.620502] [] ? __vfs_read+0x440/0x440 [ 21.626090] [] ? _raw_spin_unlock+0x2c/0x50 [ 21.632023] [] ? handle_mm_fault+0x3f2/0x3190 [ 21.638139] [] ? selinux_file_permission+0x348/0x460 [ 21.644858] [] ? rw_verify_area+0x100/0x2f0 [ 21.650791] [] vfs_write+0x18a/0x530 [ 21.656117] [] SyS_write+0xd9/0x1b0 [ 21.661355] [] ? SyS_read+0x1b0/0x1b0 [ 21.666766] [] ? trace_hardirqs_on_thunk+0x17/0x19 [ 21.673312] [] entry_SYSCALL_64_fastpath+0x16/0x76 [ 21.679851] Code: d7 88 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 b7 88 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 [ 21.706110] RIP [] netlink_unicast+0x1c0/0x760 [ 21.712418] RSP [ 21.716064] ---[ end trace f685e72746d61d4e ]--- [ 21.720914] Kernel panic - not syncing: Fatal exception [ 21.726756] Dumping ftrace buffer: [ 21.730262] (ftrace buffer empty) [ 21.733934] Kernel Offset: disabled [ 21.737523] Rebooting in 86400 seconds..