INIT: Entering runlevel: 2

[info] Using makefile-style concurrent boot in runlevel 2.
[....] 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[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added 'ci-android-49-kasan-gce-9,10.128.15.211' (ECDSA) to the list of known hosts.
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syzkaller login: [   46.395840] ------------[ cut here ]------------
[   46.396604] WARNING: CPU: 1 PID: 3559 at net/core/sock_reuseport.c:41 reuseport_alloc+0x223/0x290
[   46.397793] multiple allocations for the same socket[   46.398464] Kernel panic - not syncing: panic_on_warn set ...
[   46.398464] 
[   46.399444] CPU: 1 PID: 3559 Comm: syzkaller873510 Not tainted 4.9.57-g9eaaf14 #69
[   46.400461] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   46.401694]  ffff8801cf2cfa88 ffffffff81d91689 ffffffff83a46b40 ffff8801cf2cfb60
[   46.402913]  ffffffff83ee8a00 ffffffff82f94533 0000000000000009 ffff8801cf2cfb50
[   46.404046]  ffffffff8142e761 0000000041b58ab3 ffffffff84185ca0 ffffffff8142e5a5
[   46.405178] Call Trace:
[   46.405536]  [<ffffffff81d91689>] dump_stack+0xc1/0x128
[   46.406248]  [<ffffffff82f94533>] ? reuseport_alloc+0x223/0x290
[   46.407051]  [<ffffffff8142e761>] panic+0x1bc/0x3a8
[   46.407755]  [<ffffffff8142e5a5>] ? percpu_up_read_preempt_enable.constprop.54+0xd7/0xd7
[   46.408841]  [<ffffffff8126935d>] ? vprintk_emit+0x3ad/0x750
[   46.410070]  [<ffffffff82f94533>] ? reuseport_alloc+0x223/0x290
[   46.410868]  [<ffffffff811321e4>] __warn+0x1c4/0x1e0
[   46.411541]  [<ffffffff811322c4>] warn_slowpath_fmt+0xc4/0x110
[   46.412345]  [<ffffffff81132200>] ? __warn+0x1e0/0x1e0
[   46.413044]  [<ffffffff82f9432d>] ? reuseport_alloc+0x1d/0x290
[   46.413830]  [<ffffffff82f94533>] reuseport_alloc+0x223/0x290
[   46.414611]  [<ffffffff82f8cad1>] sk_reuseport_attach_filter+0x1c1/0x2a0
[   46.415521]  [<ffffffff82ee3077>] sock_setsockopt+0x5f7/0x18e0
[   46.418680]  [<ffffffff81bf3eef>] ? sock_has_perm+0x9f/0x3e0
[   46.424441]  [<ffffffff82ee2a80>] ? sock_enable_timestamp+0xb0/0xb0
[   46.430811]  [<ffffffff81c36bf6>] ? selinux_netlbl_socket_setsockopt+0x116/0x340
[   46.438307]  [<ffffffff81c36ae0>] ? selinux_netlbl_sock_rcv_skb+0x470/0x470
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[   46.445369]  [<ffffffff81bf468d>] ? selinux_socket_setsockopt+0x6d/0x80
[   46.452084]  [<ffffffff81bd3219>] ? security_socket_setsockopt+0x89/0xb0
[   46.458886]  [<ffffffff82ed2296>] SyS_setsockopt+0x216/0x250
[   46.464646]  [<ffffffff82ed2080>] ? SyS_recv+0x40/0x40
[   46.469887]  [<ffffffff810dfe90>] ? mm_fault_error+0x2c0/0x2c0
[   46.475820]  [<ffffffff8100301a>] ? trace_hardirqs_on_thunk+0x1a/0x1c
[   46.482365]  [<ffffffff838aa045>] entry_SYSCALL_64_fastpath+0x23/0xc6
[   46.489365] Dumping ftrace buffer:
[   46.492872]    (ftrace buffer empty)
[   46.496548] Kernel Offset: disabled
[   46.500141] Rebooting in 86400 seconds..