[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 14.233515] 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: [ 22.283745] random: sshd: uninitialized urandom read (32 bytes read, 39 bits of entropy available) [ 22.719456] random: sshd: uninitialized urandom read (32 bytes read, 39 bits of entropy available) [ 23.328410] random: sshd: uninitialized urandom read (32 bytes read, 94 bits of entropy available) [ 23.477066] random: sshd: uninitialized urandom read (32 bytes read, 100 bits of entropy available) Warning: Permanently added 'ci-android-44-kasan-gce-1,10.128.0.35' (ECDSA) to the list of known hosts. [ 28.823965] random: sshd: uninitialized urandom read (32 bytes read, 104 bits of entropy available) 2017/12/09 21:11:09 parsed 1 programs 2017/12/09 21:11:09 executed programs: 0 [ 29.366076] IPVS: Creating netns size=2552 id=1 [ 29.396199] IPVS: Creating netns size=2552 id=2 [ 29.413693] audit: type=1400 audit(1512853869.799:5): avc: denied { create } for pid=3340 comm="syz-executor4" 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 [ 29.440556] IPVS: Creating netns size=2552 id=3 [ 29.440934] audit: type=1400 audit(1512853869.829:6): avc: denied { write } for pid=3340 comm="syz-executor4" 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 [ 29.444375] kasan: CONFIG_KASAN_INLINE enabled [ 29.444379] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.444381] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 29.444383] Dumping ftrace buffer: [ 29.444386] (ftrace buffer empty) [ 29.444387] Modules linked in: [ 29.444390] CPU: 1 PID: 3341 Comm: syz-executor4 Not tainted 4.4.104-ged884eb #2 [ 29.444392] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.444394] task: ffff8800b656af80 task.stack: ffff8801d5540000 [ 29.444403] RIP: 0010:[] [] netlink_unicast+0x18f/0x760 [ 29.444404] RSP: 0018:ffff8801d5547788 EFLAGS: 00010286 [ 29.444405] RAX: dffffc0000000048 RBX: 0000000000000000 RCX: 0000000000000030 [ 29.444407] RDX: 1ffff1003b3ef25b RSI: 00000000024000c0 RDI: ffff8801d9f792d8 [ 29.444408] RBP: ffff8801d5547850 R08: 0000000000000003 R09: ffffed003aadf8d0 [ 29.444409] R10: ffff8801d56fc687 R11: ffffed003aadf8d1 R12: dffffc0000000000 [ 29.444410] R13: ffff8801d9f79200 R14: 0000000000000040 R15: ffff8801d5547828 [ 29.444412] FS: 00007f50b7947700(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 29.444413] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.444415] CR2: 00007ffee66deb70 CR3: 00000001d56b2000 CR4: 00000000001406e0 [ 29.444418] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.444419] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.444420] Stack: [ 29.444422] ffff8801d56fc720 1ffff1003aaa8ef9 0000000000000240 0000000000000030 [ 29.444425] 1ffff1003aaa8ef9 dffffc0000000006 dffffc0000000048 ffff880100000002 [ 29.444427] 0000000041b58ab3 ffffffff83ffc7ee ffffffff82f31660 ffffffff814daa66 [ 29.444427] Call Trace: [ 29.444430] [] ? netlink_attachskb+0x810/0x810 [ 29.444435] [] ? memcpy+0x36/0x40 [ 29.444437] [] ? __nlmsg_put+0x141/0x1b0 [ 29.444439] [] netlink_ack+0x203/0x480 [ 29.444442] [] nfnetlink_rcv+0x953/0xfe0 [ 29.444444] [] ? netlink_unicast+0x3ed/0x760 [ 29.444446] [] netlink_unicast+0x4c5/0x760 [ 29.444448] [] ? netlink_unicast+0x3ed/0x760 [ 29.444450] [] ? netlink_attachskb+0x810/0x810 [ 29.444451] [] netlink_sendmsg+0x832/0xbc0 [ 29.444453] [] ? netlink_unicast+0x760/0x760 [ 29.444458] [] ? selinux_socket_sendmsg+0x3a/0x50 [ 29.444460] [] ? netlink_unicast+0x760/0x760 [ 29.444462] [] sock_sendmsg+0xb5/0xf0 [ 29.444464] [] ___sys_sendmsg+0x66d/0x7d0 [ 29.444468] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 29.444470] [] ? copy_msghdr_from_user+0x590/0x590 [ 29.444473] [] ? do_futex+0xb54/0x18a0 [ 29.444475] [] ? __lock_is_held+0xa1/0xf0 [ 29.444477] [] ? __fget+0x1c2/0x320 [ 29.444479] [] ? __fget+0x1df/0x320 [ 29.444480] [] ? __fget+0x42/0x320 [ 29.444482] [] ? __fget_light+0x7d/0x1b0 [ 29.444483] [] ? __fdget+0xe/0x10 [ 29.444485] [] ? get_unused_fd_flags+0xd0/0xd0 [ 29.444488] [] __sys_sendmsg+0xc3/0x160 [ 29.444489] [] ? SyS_shutdown+0x190/0x190 [ 29.444491] [] ? SyS_futex+0x1ea/0x250 [ 29.444493] [] ? sock_map_fd+0x3f/0x60 [ 29.444496] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 29.444498] [] SyS_sendmsg+0xd/0x20 [ 29.444502] [] entry_SYSCALL_64_fastpath+0x16/0x76 [ 29.444529] 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 [ 29.444531] RIP [] netlink_unicast+0x18f/0x760 [ 29.444532] RSP [ 29.444535] ---[ end trace fef988febfb83e0b ]--- [ 29.444536] Kernel panic - not syncing: Fatal exception [ 29.445239] Dumping ftrace buffer: [ 29.445240] (ftrace buffer empty) [ 29.445241] Kernel Offset: disabled [ 29.868087] Rebooting in 86400 seconds..