[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 16.471286] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 20.854632] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) [ 21.125233] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 21.973672] random: sshd: uninitialized urandom read (32 bytes read, 110 bits of entropy available) [ 22.152989] random: sshd: uninitialized urandom read (32 bytes read, 116 bits of entropy available) Warning: Permanently added 'ci-android-44-kasan-gce-4,10.128.15.219' (ECDSA) to the list of known hosts. [ 27.527736] random: sshd: uninitialized urandom read (32 bytes read, 123 bits of entropy available) executing program [ 27.633132] audit: type=1400 audit(1513987550.119:5): avc: denied { create } for pid=3324 comm="syzkaller979131" 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 [ 27.659288] audit: type=1400 audit(1513987550.149:6): avc: denied { write } for pid=3324 comm="syzkaller979131" 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 [ 27.687471] kasan: CONFIG_KASAN_INLINE enabled [ 27.691908] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 27.705114] Dumping ftrace buffer: [ 27.708621] (ftrace buffer empty) [ 27.712295] Modules linked in: [ 27.715567] CPU: 1 PID: 3324 Comm: syzkaller979131 Not tainted 4.4.107-g610c835 #12 [ 27.723321] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.732638] task: ffff8801d159c740 task.stack: ffff8801d0cd0000 [ 27.738659] RIP: 0010:[] [] netlink_unicast+0x1c0/0x760 [ 27.747317] RSP: 0018:ffff8801d0cd7778 EFLAGS: 00010293 [ 27.752727] RAX: dffffc0000000048 RBX: dffffc0000000000 RCX: ffffffff82f89609 [ 27.759964] RDX: 0000000000000000 RSI: 00000000024000c0 RDI: ffff8801d15b2498 [ 27.767199] RBP: ffff8801d0cd7838 R08: ffffed003a2a8b75 R09: ffffed003a2a8b75 [ 27.774433] R10: 0000000000000003 R11: ffffed003a2a8b74 R12: 0000000000000000 [ 27.781668] R13: dffffc0000000000 R14: ffff8801d15b23c0 R15: dffffc0000000006 [ 27.788903] FS: 0000000000fc4880(0063) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 27.797092] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.802943] CR2: 0000000020d22fec CR3: 00000001d15c9000 CR4: 00000000001406e0 [ 27.810187] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.817420] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.824653] Stack: [ 27.826764] 1ffff1003a19aef6 ffff8801d1545b80 0000000000000240 0000000000000030 [ 27.834709] 1ffff1003a19aef6 dffffc0000000048 0000000000000cfc 0000000041b58ab3 [ 27.842657] ffffffff83ffe7ee ffffffff82f89450 ffff8801d15b23c0 0000000000000000 [ 27.850599] Call Trace: [ 27.853156] [] ? netlink_attachskb+0x6c0/0x6c0 [ 27.859353] [] ? __nlmsg_put+0x14c/0x1b0 [ 27.865028] [] netlink_ack+0x231/0x4b0 [ 27.870535] [] nfnetlink_rcv+0xaa2/0x1070 [ 27.876296] [] netlink_unicast+0x522/0x760 [ 27.882143] [] ? netlink_unicast+0x44f/0x760 [ 27.888169] [] ? netlink_attachskb+0x6c0/0x6c0 [ 27.894367] [] netlink_sendmsg+0x8e8/0xc50 [ 27.900213] [] ? netlink_unicast+0x760/0x760 [ 27.906244] [] ? selinux_socket_sendmsg+0x3f/0x50 [ 27.912716] [] ? security_socket_sendmsg+0x89/0xb0 [ 27.919260] [] ? netlink_unicast+0x760/0x760 [ 27.925282] [] sock_sendmsg+0xca/0x110 [ 27.930781] [] ___sys_sendmsg+0x6c1/0x7c0 [ 27.936542] [] ? copy_msghdr_from_user+0x550/0x550 [ 27.943088] [] ? __alloc_pages_direct_compact+0x250/0x250 [ 27.950237] [] ? __lock_is_held+0xa1/0xf0 [ 27.955995] [] ? __lock_is_held+0xa1/0xf0 [ 27.962158] [] ? check_preemption_disabled+0x3b/0x200 [ 27.968963] [] ? handle_mm_fault+0xbf5/0x3190 [ 27.975078] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 27.981794] [] ? __fget_light+0xa1/0x1e0 [ 27.987469] [] ? __fdget+0x18/0x20 [ 27.992624] [] __sys_sendmsg+0xd3/0x190 [ 27.998211] [] ? SyS_shutdown+0x1b0/0x1b0 [ 28.003973] [] ? __do_page_fault+0x380/0xa00 [ 28.009997] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 28.016801] [] SyS_sendmsg+0x2d/0x50 [ 28.022130] [] entry_SYSCALL_64_fastpath+0x16/0x76 [ 28.028670] 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 [ 28.055076] RIP [] netlink_unicast+0x1c0/0x760 [ 28.061386] RSP [ 28.065177] ---[ end trace f0a35d45dcd12d52 ]--- [ 28.069942] Kernel panic - not syncing: Fatal exception [ 28.075316] Dumping ftrace buffer: [ 28.078825] (ftrace buffer empty) [ 28.082502] Kernel Offset: disabled [ 28.086094] Rebooting in 86400 seconds..