[ 13.704331] random: sshd: uninitialized urandom read (32 bytes read, 31 bits of entropy available) [....] 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: [ 21.978207] random: sshd: uninitialized urandom read (32 bytes read, 39 bits of entropy available) [ 22.440344] random: sshd: uninitialized urandom read (32 bytes read, 39 bits of entropy available) [ 22.906072] random: sshd: uninitialized urandom read (32 bytes read, 85 bits of entropy available) [ 23.059123] random: sshd: uninitialized urandom read (32 bytes read, 91 bits of entropy available) Warning: Permanently added 'ci-android-44-kasan-gce-0,10.128.0.56' (ECDSA) to the list of known hosts. [ 28.435027] random: sshd: uninitialized urandom read (32 bytes read, 98 bits of entropy available) executing program [ 28.539943] audit: type=1400 audit(1512855315.785:5): avc: denied { create } for pid=3316 comm="syzkaller779531" 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 [ 28.564888] audit: type=1400 audit(1512855315.815:6): avc: denied { write } for pid=3316 comm="syzkaller779531" path="socket:[8697]" dev="sockfs" ino=8697 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 [ 28.593244] kasan: CONFIG_KASAN_INLINE enabled [ 28.597637] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 28.610452] Dumping ftrace buffer: [ 28.613956] (ftrace buffer empty) [ 28.617630] Modules linked in: [ 28.620899] CPU: 0 PID: 3322 Comm: syzkaller779531 Not tainted 4.4.104-ged884eb #2 [ 28.628565] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.637887] task: ffff8800b784c740 task.stack: ffff8801d30a0000 [ 28.643909] RIP: 0010:[] [] netlink_unicast+0x18f/0x760 [ 28.652565] RSP: 0018:ffff8801d30a7808 EFLAGS: 00010286 [ 28.657981] RAX: dffffc0000000048 RBX: 0000000000000000 RCX: 0000000000000030 [ 28.665222] RDX: 1ffff1003a883b33 RSI: 00000000024000c0 RDI: ffff8801d441d998 [ 28.672469] RBP: ffff8801d30a78d0 R08: 0000000000000005 R09: ffffed0017148938 [ 28.679702] R10: ffff8800b8a449c2 R11: ffffed0017148939 R12: dffffc0000000000 [ 28.687045] R13: ffff8801d441d8c0 R14: 0000000000000040 R15: ffff8801d30a78a8 [ 28.694280] FS: 00007fdb6873e700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 28.702471] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.708317] CR2: 0000000020f81000 CR3: 00000001d61d2000 CR4: 00000000001406f0 [ 28.715549] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.722790] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.730021] Stack: [ 28.732131] ffff8800b8a44a50 1ffff1003a614f09 0000000000000240 0000000000000030 [ 28.740072] 1ffff1003a614f09 dffffc0000000006 dffffc0000000048 ffff880000000cf4 [ 28.748022] 0000000041b58ab3 ffffffff83ffc7ee ffffffff82f31660 ffffffff814daa66 [ 28.755960] Call Trace: [ 28.758511] [] ? netlink_attachskb+0x810/0x810 [ 28.764712] [] ? memcpy+0x36/0x40 [ 28.769774] [] ? __nlmsg_put+0x141/0x1b0 [ 28.775445] [] netlink_ack+0x203/0x480 [ 28.780944] [] nfnetlink_rcv+0x953/0xfe0 [ 28.786614] [] ? netlink_unicast+0x3ed/0x760 [ 28.792635] [] ? netlink_unicast+0x46e/0x760 [ 28.798652] [] netlink_unicast+0x4c5/0x760 [ 28.804497] [] ? netlink_unicast+0x3ed/0x760 [ 28.810516] [] ? netlink_attachskb+0x810/0x810 [ 28.816709] [] netlink_sendmsg+0x832/0xbc0 [ 28.822558] [] ? avc_get_hash_stats+0x1f0/0x1f0 [ 28.828837] [] ? netlink_unicast+0x760/0x760 [ 28.834858] [] ? selinux_socket_sendmsg+0x3a/0x50 [ 28.841313] [] ? netlink_unicast+0x760/0x760 [ 28.847334] [] sock_sendmsg+0xb5/0xf0 [ 28.852756] [] sock_write_iter+0x1ea/0x3d0 [ 28.858601] [] ? avc_has_perm_noaudit+0x420/0x420 [ 28.865059] [] ? sock_sendmsg+0xf0/0xf0 [ 28.870645] [] __vfs_write+0x2a1/0x3f0 [ 28.876145] [] ? __vfs_read+0x3e0/0x3e0 [ 28.881733] [] ? selinux_file_permission+0x2ad/0x3f0 [ 28.888447] [] ? rw_verify_area+0xbb/0x2c0 [ 28.894298] [] vfs_write+0x14b/0x520 [ 28.899621] [] SyS_write+0xd3/0x1c0 [ 28.904857] [] ? SyS_read+0x1c0/0x1c0 [ 28.910268] [] ? trace_hardirqs_on_thunk+0x17/0x19 [ 28.916811] [] entry_SYSCALL_64_fastpath+0x16/0x76 [ 28.923360] Code: ff 85 c0 0f 85 91 03 00 00 49 8d 57 c0 48 89 d9 4c 89 ee 4c 89 f7 e8 71 f6 ff ff 83 f8 01 0f 85 c4 03 00 00 48 8b 85 68 ff ff ff <0f> b6 00 84 c0 74 08 3c 03 0f 8e 90 05 00 00 48 8b 85 60 ff ff [ 28.949572] RIP [] netlink_unicast+0x18f/0x760 [ 28.955879] RSP [ 28.959678] ---[ end trace 330964fbf52739c4 ]--- [ 28.964458] Kernel panic - not syncing: Fatal exception [ 28.970155] Dumping ftrace buffer: [ 28.973660] (ftrace buffer empty) [ 28.977338] Kernel Offset: disabled [ 28.980939] Rebooting in 86400 seconds..