[ 16.481847] random: sshd: uninitialized urandom read (32 bytes read, 33 bits of entropy available) [....] Starting file context maintaining daemon: 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: [ 20.994098] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 21.280449] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 22.059701] random: sshd: uninitialized urandom read (32 bytes read, 95 bits of entropy available) [ 22.235782] random: sshd: uninitialized urandom read (32 bytes read, 99 bits of entropy available) Warning: Permanently added 'ci-android-44-kasan-gce-1,10.128.15.215' (ECDSA) to the list of known hosts. [ 27.578198] random: sshd: uninitialized urandom read (32 bytes read, 103 bits of entropy available) 2017/12/23 22:32:25 parsed 1 programs 2017/12/23 22:32:25 executed programs: 0 [ 27.808616] IPVS: Creating netns size=2552 id=1 [ 27.856925] IPVS: Creating netns size=2552 id=2 [ 27.883271] IPVS: Creating netns size=2552 id=3 [ 27.909790] kasan: CONFIG_KASAN_INLINE enabled [ 27.914216] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP [ 27.926118] kasan: CONFIG_KASAN_INLINE enabledkasan: GPF could be caused by NULL-ptr deref or user memory access KASAN [ 27.937599] Dumping ftrace buffer: [ 27.941104] (ftrace buffer empty) [ 27.944781] Modules linked in: [ 27.948061] CPU: 1 PID: 3352 Comm: syz-executor0 Not tainted 4.4.107-g610c835 #12 [ 27.955644] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.964966] task: ffff8801d0d90000 task.stack: ffff8801d0080000 [ 27.970988] RIP: 0010:[] [] __xfrm_policy_unlink+0x1a9/0x370 [ 27.980091] RSP: 0018:ffff8801d0087838 EFLAGS: 00010246 [ 27.985506] RAX: 0000000000000000 RBX: ffff8800b18cf700 RCX: 0000000000000000 [ 27.992742] RDX: dffffc0000000000 RSI: 1ffff1003a668484 RDI: ffff8800b18cf720 [ 27.999987] RBP: ffff8801d0087870 R08: ffff8800b18cf890 R09: ffffffff850e9cd0 [ 28.007227] R10: 0000000000000001 R11: 1ffff1003a010ed8 R12: ffff8800b18cf890 [ 28.014464] R13: ffff8801d3342420 R14: ffff8801d1548000 R15: 0000000000000000 [ 28.021701] FS: 00007f77e0868700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 28.029894] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.035741] CR2: 00007f77e0867db8 CR3: 00000000b478a000 CR4: 00000000001406e0 [ 28.042980] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.050226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.057466] Stack: [ 28.059581] 0000000000000000 000000039ce7bb2a 0000000000000000 ffff8801d28601c0 [ 28.067534] 0000000000000000 0000000000000000 ffff8800b18cf700 ffff8801d00878c0 [ 28.075482] ffffffff832af2d4 ffffffff00000003 ffff8801d15499f8 ffff8801d1548000 [ 28.083433] Call Trace: [ 28.085987] [] xfrm_sk_policy_insert+0x1a4/0x470 [ 28.092360] [] xfrm_user_policy+0x373/0x540 [ 28.098298] [] ? xfrm_user_policy+0x214/0x540 [ 28.104409] [] ? xfrm_replay_timer_handler+0x320/0x320 [ 28.111300] [] ? ns_capable_common+0xcf/0x160 [ 28.117411] [] do_ipv6_setsockopt.isra.8+0x1d6c/0x30e0 [ 28.124301] [] ? ip6_ra_control+0x420/0x420 [ 28.130239] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 28.137219] [] ? __lock_acquire+0xb5f/0x4b50 [ 28.143245] [] ? avc_has_perm+0x296/0x500 [ 28.149006] [] ? avc_has_perm+0x309/0x500 [ 28.154768] [] ? avc_has_perm+0xb6/0x500 [ 28.160447] [] ? avc_has_perm_noaudit+0x460/0x460 [ 28.166905] [] ? sock_has_perm+0x1c2/0x3e0 [ 28.172757] [] ? sock_has_perm+0x292/0x3e0 [ 28.178605] [] ? sock_has_perm+0x9f/0x3e0 [ 28.184367] [] ? selinux_file_send_sigiotask+0x310/0x310 [ 28.191433] [] ? selinux_netlbl_socket_setsockopt+0x117/0x320 [ 28.198933] [] ? selinux_netlbl_sock_rcv_skb+0x400/0x400 [ 28.205997] [] ipv6_setsockopt+0xd7/0x150 [ 28.211758] [] udpv6_setsockopt+0x45/0x80 [ 28.217522] [] sock_common_setsockopt+0x95/0xd0 [ 28.223811] [] SyS_setsockopt+0x160/0x250 [ 28.229573] [] ? SyS_recv+0x40/0x40 [ 28.234816] [] ? int_ret_from_sys_call+0x52/0x9f [ 28.241189] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 28.247647] [] entry_SYSCALL_64_fastpath+0x16/0x76 [ 28.254806] Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bd 01 00 00 48 ba 00 00 00 00 00 fc ff df 48 8b 43 20 48 89 c1 48 c1 e9 03 <80> 3c 11 00 0f 85 5d 01 00 00 4d 85 ff 4c 89 38 48 89 45 c8 74 [ 28.281188] RIP [] __xfrm_policy_unlink+0x1a9/0x370 [ 28.287943] RSP [ 28.291542] general protection fault: 0000 [#2] [ 28.291589] ---[ end trace 21c580203b90d7cf ]--- [ 28.291593] Kernel panic - not syncing: Fatal exception in interrupt [ 28.307276] PREEMPT SMP KASAN [ 28.310982] Dumping ftrace buffer: [ 28.314492] (ftrace buffer empty) [ 28.318170] Modules linked in: [ 28.321445] CPU: 0 PID: 3357 Comm: syz-executor4 Tainted: G D 4.4.107-g610c835 #12 [ 28.330247] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.339578] task: ffff8801d0f7af80 task.stack: ffff8801d01c8000 [ 28.345599] RIP: 0010:[] [] __xfrm_policy_unlink+0x1a9/0x370 [ 28.354714] RSP: 0018:ffff8801d01cf838 EFLAGS: 00010246 [ 28.360133] RAX: 0000000000000000 RBX: ffff8801d00ff700 RCX: 0000000000000000 [ 28.367373] RDX: dffffc0000000000 RSI: 1ffff1003ab98f98 RDI: ffff8801d00ff720 [ 28.374612] RBP: ffff8801d01cf870 R08: ffff8801d00ff890 R09: 0000000000000000 [ 28.381852] R10: ffffffff83843340 R11: 1ffff1003a039ed8 R12: ffff8801d00ff890 [ 28.389092] R13: ffff8801d5cc7cc0 R14: ffff8801d1549e00 R15: 0000000000000000 [ 28.396333] FS: 00007fdf0e5d6700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 28.404528] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.410378] CR2: 00007fdf0e5d5db8 CR3: 00000001d2d41000 CR4: 00000000001406f0 [ 28.418259] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.425499] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.432735] Stack: [ 28.434852] 0000000000000000 00000003aebdda25 0000000000000000 ffff8801d4848800 [ 28.442819] 0000000000000000 0000000000000000 ffff8801d00ff700 ffff8801d01cf8c0 [ 28.450782] ffffffff832af2d4 ffffffff00000003 ffff8801d154b7f8 ffff8801d1549e00 [ 28.458750] Call Trace: [ 28.461313] [] xfrm_sk_policy_insert+0x1a4/0x470 [ 28.467687] [] xfrm_user_policy+0x373/0x540 [ 28.473630] [] ? xfrm_user_policy+0x214/0x540 [ 28.479744] [] ? xfrm_replay_timer_handler+0x320/0x320 [ 28.486643] [] ? ns_capable_common+0xcf/0x160 [ 28.492757] [] do_ipv6_setsockopt.isra.8+0x1d6c/0x30e0 [ 28.499654] [] ? ip6_ra_control+0x420/0x420 [ 28.505596] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 28.512579] [] ? avc_has_perm+0xb6/0x500 [ 28.518258] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 28.525240] [] ? avc_has_perm+0x296/0x500 [ 28.531005] [] ? avc_has_perm+0x309/0x500 [ 28.536778] [] ? avc_has_perm+0xb6/0x500 [ 28.542458] [] ? avc_has_perm_noaudit+0x460/0x460 [ 28.548921] [] ? sock_has_perm+0x9f/0x3e0 [ 28.554688] [] ? sock_has_perm+0x1c2/0x3e0 [ 28.560544] [] ? sock_has_perm+0x292/0x3e0 [ 28.566397] [] ? sock_has_perm+0x9f/0x3e0 [ 28.572170] [] ? selinux_file_send_sigiotask+0x310/0x310 [ 28.579239] [] ? selinux_netlbl_socket_setsockopt+0x117/0x320 [ 28.586756] [] ? selinux_netlbl_sock_rcv_skb+0x400/0x400 [ 28.593825] [] ipv6_setsockopt+0xd7/0x150 [ 28.599592] [] udpv6_setsockopt+0x45/0x80 [ 28.605360] [] sock_common_setsockopt+0x95/0xd0 [ 28.611647] [] SyS_setsockopt+0x160/0x250 [ 28.617413] [] ? SyS_recv+0x40/0x40 [ 28.622667] [] ? _raw_spin_unlock_irq+0x38/0x50 [ 28.628954] [] ? finish_task_switch+0x1e7/0x4e0 [ 28.635243] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 28.641714] [] entry_SYSCALL_64_fastpath+0x16/0x76 [ 28.648272] Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bd 01 00 00 48 ba 00 00 00 00 00 fc ff df 48 8b 43 20 48 89 c1 48 c1 e9 03 <80> 3c 11 00 0f 85 5d 01 00 00 4d 85 ff 4c 89 38 48 89 45 c8 74 [ 28.674849] RIP [] __xfrm_policy_unlink+0x1a9/0x370 [ 28.681601] RSP [ 28.685633] Dumping ftrace buffer: [ 28.689151] (ftrace buffer empty) [ 28.692832] Kernel Offset: disabled [ 28.696421] Rebooting in 86400 seconds..