[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   22.766770] random: sshd: uninitialized urandom read (32 bytes read, 35 bits of entropy available)
[?25l[?1c7[ ok 8[?25h[?0c.
[   23.887646] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available)

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   24.278451] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available)
[   25.448906] random: nonblocking pool is initialized
Warning: Permanently added '10.128.0.36' (ECDSA) to the list of known hosts.
2018/04/24 22:42:38 parsed 1 programs
2018/04/24 22:42:38 executed programs: 0
[   31.658572] IPVS: Creating netns size=2552 id=1
[   31.901771] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready
[   31.918017] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready
[   31.999815] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready
[   32.015881] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready
[   32.106465] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready
[   32.122855] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready
[   32.138795] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready
[   32.156848] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready
[   32.896195] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
[   32.935242] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[   33.268841] kasan: CONFIG_KASAN_INLINE enabled
[   33.273314] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
[   33.286173] Dumping ftrace buffer:
[   33.289687]    (ftrace buffer empty)
[   33.293370] Modules linked in:
[   33.296663] CPU: 1 PID: 4220 Comm: syz-executor0 Not tainted 4.4.128-gbd23e3a #19
[   33.304254] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   33.313581] task: ffff8801d78be000 task.stack: ffff8801d6800000
[   33.319610] RIP: 0010:[<ffffffff8349586f>]  [<ffffffff8349586f>] udpv6_queue_rcv_skb+0x18f/0x1500
[   33.328720] RSP: 0018:ffff8801d6807760  EFLAGS: 00010206
[   33.334140] RAX: dffffc0000000000 RBX: ffff8801d6910000 RCX: 0000000000000000
[   33.341384] RDX: 000000000000000c RSI: ffffffff83495856 RDI: 0000000000000060
[   33.348628] RBP: ffff8801d68077a0 R08: 0000000000000001 R09: 0000000000000001
[   33.355875] R10: 0000000000000000 R11: ffff8801d78be000 R12: ffff8801d99a6000
[   33.363119] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801d99a6058
[   33.370365] FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:000000000a37a900
[   33.378566] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   33.384419] CR2: 00000000205dafe4 CR3: 00000001c7b1e000 CR4: 0000000000160670
[   33.391672] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   33.398915] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   33.406158] Stack:
[   33.408288]  00000001d6910088 ffff8801d99a6000 ffff8801d6910088 ffff8801d6910000
[   33.416282]  ffff8801d99a6000 dffffc0000000000 ffff8801d99a6058 0000000000000000
[   33.424266]  ffff8801d6807810 ffffffff82f28f7b ffff8801d6910430 ffff8801d6910188
[   33.432252] Call Trace:
[   33.434818]  [<ffffffff82f28f7b>] release_sock+0x17b/0x500
[   33.440417]  [<ffffffff83492257>] udpv6_sendmsg+0x917/0x24c0
[   33.446189]  [<ffffffff8348d5f0>] ? __udpv6_queue_rcv_skb+0x480/0x480
[   33.452740]  [<ffffffff83491940>] ? udp6_lib_lookup2+0x990/0x990
[   33.458871]  [<ffffffff8122edf0>] ? debug_check_no_locks_freed+0x210/0x210
[   33.465862]  [<ffffffff81c6e4c1>] ? sock_has_perm+0x1c1/0x400
[   33.471720]  [<ffffffff81c6e59f>] ? sock_has_perm+0x29f/0x400
[   33.477577]  [<ffffffff81c6e39f>] ? sock_has_perm+0x9f/0x400
[   33.483351]  [<ffffffff832fd6e3>] ? inet_sendmsg+0x143/0x4d0
[   33.489131]  [<ffffffff832fd7a3>] inet_sendmsg+0x203/0x4d0
[   33.494736]  [<ffffffff832fd613>] ? inet_sendmsg+0x73/0x4d0
[   33.500420]  [<ffffffff832fd5a0>] ? inet_recvmsg+0x4c0/0x4c0
[   33.506199]  [<ffffffff82f1ba9c>] sock_sendmsg+0xcc/0x110
[   33.511714]  [<ffffffff82f1bd03>] sock_write_iter+0x223/0x3b0
[   33.517571]  [<ffffffff82f1bae0>] ? sock_sendmsg+0x110/0x110
[   33.523343]  [<ffffffff81e48f0f>] ? iov_iter_init+0xaf/0x1d0
[   33.529114]  [<ffffffff8151c49d>] __vfs_write+0x30d/0x3f0
[   33.534623]  [<ffffffff8151c190>] ? __vfs_read+0x3e0/0x3e0
[   33.540230]  [<ffffffff81277247>] ? debug_lockdep_rcu_enabled+0x77/0x90
[   33.546955]  [<ffffffff8157823f>] ? __fget_light+0x9f/0x1f0
[   33.552641]  [<ffffffff81c67382>] ? selinux_file_permission+0x2f2/0x450
[   33.559369]  [<ffffffff8151d990>] ? rw_verify_area+0x100/0x300
[   33.565315]  [<ffffffff8151e081>] vfs_write+0x191/0x4e0
[   33.570652]  [<ffffffff81520689>] SyS_write+0xd9/0x1c0
[   33.575903]  [<ffffffff815205b0>] ? SyS_read+0x1c0/0x1c0
[   33.581333]  [<ffffffff81006b4b>] ? do_fast_syscall_32+0xdb/0x8b0
[   33.587557]  [<ffffffff815205b0>] ? SyS_read+0x1c0/0x1c0
[   33.592996]  [<ffffffff81006d96>] do_fast_syscall_32+0x326/0x8b0
[   33.599126]  [<ffffffff838c00aa>] sysenter_flags_fixed+0xd/0x17
[   33.605153] Code: 74 24 58 41 f6 c6 01 0f 85 e2 07 00 00 e8 6a b9 eb fd 49 83 e6 fe 48 b8 00 00 00 00 00 fc ff df 49 8d 7e 60 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 01 0f 8e c1 0d 00 00 41 f6 46 60 04 
[   33.632050] RIP  [<ffffffff8349586f>] udpv6_queue_rcv_skb+0x18f/0x1500
[   33.638817]  RSP <ffff8801d6807760>
[   33.642455] ---[ end trace 7cf06045a300448b ]---
[   33.647222] Kernel panic - not syncing: Fatal exception in interrupt
[   33.654365] Dumping ftrace buffer:
[   33.657883]    (ftrace buffer empty)
[   33.661566] Kernel Offset: disabled
[   33.665165] Rebooting in 86400 seconds..