restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 25.051906] random: sshd: uninitialized urandom read (32 bytes read, 39 bits of entropy available) [ 25.408665] random: sshd: uninitialized urandom read (32 bytes read, 39 bits of entropy available) [ 26.425951] random: sshd: uninitialized urandom read (32 bytes read, 121 bits of entropy available) [ 26.592447] random: sshd: uninitialized urandom read (32 bytes read, 125 bits of entropy available) [ 26.706945] random: nonblocking pool is initialized Warning: Permanently added '10.128.0.34' (ECDSA) to the list of known hosts. executing program [ 32.084753] audit: type=1400 audit(1521284665.676:5): avc: denied { create } for pid=3782 comm="syzkaller940240" 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 [ 32.110219] audit: type=1400 audit(1521284665.706:6): avc: denied { write } for pid=3782 comm="syzkaller940240" 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 [ 32.138393] kasan: CONFIG_KASAN_INLINE enabled [ 32.142968] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 32.155803] Dumping ftrace buffer: [ 32.159309] (ftrace buffer empty) [ 32.162987] Modules linked in: [ 32.166261] CPU: 0 PID: 3782 Comm: syzkaller940240 Not tainted 4.4.120-gd63fdf6 #28 [ 32.174022] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.183347] task: ffff8801c5746000 task.stack: ffff8800ab7a8000 [ 32.189369] RIP: 0010:[] [] netlink_unicast+0x1c0/0x760 [ 32.198032] RSP: 0018:ffff8800ab7af778 EFLAGS: 00010293 [ 32.203446] RAX: dffffc0000000048 RBX: dffffc0000000000 RCX: ffffffff82f89d89 [ 32.210682] RDX: 0000000000000000 RSI: 00000000024000c0 RDI: ffff8800b2f7bd58 [ 32.217918] RBP: ffff8800ab7af838 R08: ffffed0017747376 R09: ffffed0017747376 [ 32.225154] R10: 0000000000000004 R11: ffffed0017747375 R12: 0000000000000000 [ 32.232394] R13: dffffc0000000000 R14: ffff8800b2f7bc80 R15: dffffc0000000006 [ 32.239633] FS: 0000000001c88880(0063) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 32.247825] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 32.253673] CR2: 0000000020000c80 CR3: 00000000ae2f2000 CR4: 0000000000160670 [ 32.260911] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 32.268155] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 32.275394] Stack: [ 32.277510] 1ffff100156f5ef6 ffff8800bba39b80 0000000000000240 0000000000000030 [ 32.285517] 1ffff100156f5ef6 dffffc0000000048 0000000000000ec6 0000000041b58ab3 [ 32.293530] ffffffff84001503 ffffffff82f89bd0 ffff8800b2f7bc80 0000000000000000 [ 32.301500] Call Trace: [ 32.304056] [] ? netlink_attachskb+0x6c0/0x6c0 [ 32.310254] [] ? __nlmsg_put+0x14c/0x1b0 [ 32.315931] [] netlink_ack+0x231/0x4b0 [ 32.321438] [] nfnetlink_rcv+0xaa2/0x1070 [ 32.327203] [] netlink_unicast+0x522/0x760 [ 32.333056] [] ? netlink_unicast+0x44f/0x760 [ 32.339089] [] ? netlink_attachskb+0x6c0/0x6c0 [ 32.345293] [] netlink_sendmsg+0x8e8/0xc50 [ 32.351143] [] ? netlink_unicast+0x760/0x760 [ 32.357169] [] ? selinux_socket_sendmsg+0x3f/0x50 [ 32.363627] [] ? security_socket_sendmsg+0x89/0xb0 [ 32.370172] [] ? netlink_unicast+0x760/0x760 [ 32.376197] [] sock_sendmsg+0xca/0x110 [ 32.381702] [] ___sys_sendmsg+0x6c1/0x7c0 [ 32.387469] [] ? copy_msghdr_from_user+0x550/0x550 [ 32.394016] [] ? check_preemption_disabled+0x3b/0x200 [ 32.400822] [] ? do_huge_pmd_anonymous_page+0x549/0xa10 [ 32.407801] [] ? _raw_spin_unlock+0x2c/0x50 [ 32.413741] [] ? do_huge_pmd_anonymous_page+0x3dd/0xa10 [ 32.420720] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 32.427441] [] ? __fget_light+0xa3/0x1e0 [ 32.433119] [] ? __fdget+0x18/0x20 [ 32.438276] [] __sys_sendmsg+0xd3/0x190 [ 32.443867] [] ? SyS_shutdown+0x1b0/0x1b0 [ 32.449632] [] ? vmacache_update+0xfe/0x130 [ 32.455569] [] ? __do_page_fault+0x380/0xa00 [ 32.461594] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 32.468408] [] SyS_sendmsg+0x2d/0x50 [ 32.473739] [] entry_SYSCALL_64_fastpath+0x1c/0x98 [ 32.480282] 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 [ 32.506894] RIP [] netlink_unicast+0x1c0/0x760 [ 32.513237] RSP [ 32.516898] ---[ end trace 6daca9f663366a49 ]--- [ 32.521647] Kernel panic - not syncing: Fatal exception [ 32.527429] Dumping ftrace buffer: [ 32.530942] (ftrace buffer empty) [ 32.534622] Kernel Offset: disabled [ 32.538217] Rebooting in 86400 seconds..