[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 15.987507] 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: [ 21.521341] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 21.961779] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 22.655009] random: sshd: uninitialized urandom read (32 bytes read, 73 bits of entropy available) [ 22.815667] random: sshd: uninitialized urandom read (32 bytes read, 78 bits of entropy available) Warning: Permanently added 'ci-android-44-kasan-gce-386-1,10.128.15.240' (ECDSA) to the list of known hosts. [ 28.274557] random: sshd: uninitialized urandom read (32 bytes read, 84 bits of entropy available) executing program [ 28.360854] audit: type=1400 audit(1514002725.037:5): avc: denied { create } for pid=3311 comm="syzkaller758904" 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 [ 28.386617] audit: type=1400 audit(1514002725.067:6): avc: denied { write } for pid=3311 comm="syzkaller758904" 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 [ 28.414572] kasan: CONFIG_KASAN_INLINE enabled [ 28.419936] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 28.432750] Dumping ftrace buffer: [ 28.436258] (ftrace buffer empty) [ 28.439930] Modules linked in: [ 28.443202] CPU: 0 PID: 3311 Comm: syzkaller758904 Not tainted 4.4.107-g610c835 #4 [ 28.450869] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.460190] task: ffff8801d1aa5f00 task.stack: ffff8800b3c38000 [ 28.466208] RIP: 0010:[] [] netlink_unicast+0x1c0/0x760 [ 28.474864] RSP: 0018:ffff8800b3c3f6f8 EFLAGS: 00010293 [ 28.480277] RAX: dffffc0000000048 RBX: dffffc0000000000 RCX: ffffffff82f89609 [ 28.487513] RDX: 0000000000000000 RSI: 00000000024000c0 RDI: ffff8800b5ec1d58 [ 28.494749] RBP: ffff8800b3c3f7b8 R08: ffffed00162bdcf5 R09: ffffed00162bdcf5 [ 28.501983] R10: 0000000000000003 R11: ffffed00162bdcf4 R12: 0000000000000000 [ 28.509216] R13: dffffc0000000000 R14: ffff8800b5ec1c80 R15: dffffc0000000006 [ 28.516449] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000009274840 [ 28.524638] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 28.530486] CR2: 0000000020d22fec CR3: 00000000b486e000 CR4: 00000000001406f0 [ 28.537728] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.544964] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.552203] Stack: [ 28.554318] 1ffff10016787ee6 ffff8800b15ee780 0000000000000240 0000000000000030 [ 28.562259] 1ffff10016787ee6 dffffc0000000048 0000000000000cef 0000000041b58ab3 [ 28.570197] ffffffff83ffe7ee ffffffff82f89450 ffff8800b5ec1c80 0000000000000000 [ 28.578141] Call Trace: [ 28.580697] [] ? netlink_attachskb+0x6c0/0x6c0 [ 28.586891] [] ? __nlmsg_put+0x14c/0x1b0 [ 28.592561] [] netlink_ack+0x231/0x4b0 [ 28.598062] [] nfnetlink_rcv+0xaa2/0x1070 [ 28.603822] [] netlink_unicast+0x522/0x760 [ 28.609667] [] ? netlink_unicast+0x44f/0x760 [ 28.615686] [] ? netlink_attachskb+0x6c0/0x6c0 [ 28.621881] [] netlink_sendmsg+0x8e8/0xc50 [ 28.627728] [] ? netlink_unicast+0x760/0x760 [ 28.633753] [] ? selinux_socket_sendmsg+0x3f/0x50 [ 28.640208] [] ? security_socket_sendmsg+0x89/0xb0 [ 28.646751] [] ? netlink_unicast+0x760/0x760 [ 28.652773] [] sock_sendmsg+0xca/0x110 [ 28.658274] [] ___sys_sendmsg+0x6c1/0x7c0 [ 28.664033] [] ? copy_msghdr_from_user+0x550/0x550 [ 28.670576] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 28.677551] [] ? __alloc_pages_direct_compact+0x250/0x250 [ 28.684698] [] ? __lock_is_held+0xa1/0xf0 [ 28.690456] [] ? __lock_is_held+0xa1/0xf0 [ 28.696215] [] ? check_preemption_disabled+0x3b/0x200 [ 28.703017] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 28.709729] [] ? __fget_light+0xa1/0x1e0 [ 28.715403] [] ? __fdget+0x18/0x20 [ 28.720555] [] ? sockfd_lookup_light+0x118/0x160 [ 28.726921] [] __sys_sendmsg+0xd3/0x190 [ 28.732504] [] ? SyS_shutdown+0x1b0/0x1b0 [ 28.738266] [] ? __do_page_fault+0x380/0xa00 [ 28.744284] [] compat_SyS_sendmsg+0x2a/0x40 [ 28.750217] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 28.756757] [] do_fast_syscall_32+0x314/0x890 [ 28.762868] [] sysenter_flags_fixed+0xd/0x17 [ 28.768886] Code: 47 45 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 27 45 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 [ 28.795111] RIP [] netlink_unicast+0x1c0/0x760 [ 28.801421] RSP [ 28.805074] ---[ end trace 72765b44f92b7dad ]--- [ 28.809865] Kernel panic - not syncing: Fatal exception [ 28.815508] Dumping ftrace buffer: [ 28.819013] (ftrace buffer empty) [ 28.822687] Kernel Offset: disabled [ 28.826280] Rebooting in 86400 seconds..