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 '10.128.10.38' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   46.529381] IPVS: ftp: loaded support on port[0] = 21
[   46.561174] ==================================================================
[   46.568570] BUG: KMSAN: uninit-value in pppoe_rcv+0xcef/0x10e0
[   46.574525] CPU: 0 PID: 4543 Comm: syz-executor355 Not tainted 4.16.0+ #87
[   46.581517] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   46.590851] Call Trace:
[   46.593424]  dump_stack+0x185/0x1d0
[   46.597039]  ? pppoe_rcv+0xcef/0x10e0
[   46.600831]  kmsan_report+0x142/0x240
[   46.605147]  __msan_warning_32+0x6c/0xb0
[   46.609196]  pppoe_rcv+0xcef/0x10e0
[   46.612806]  __netif_receive_skb_core+0x47df/0x4a90
[   46.617807]  ? pppoe_disc_rcv+0xd20/0xd20
[   46.621940]  netif_receive_skb_internal+0x49d/0x630
[   46.626936]  ? netif_receive_skb+0x47/0x240
[   46.631240]  netif_receive_skb+0x230/0x240
[   46.635457]  tun_get_user+0x740f/0x7c60
[   46.639424]  tun_chr_write_iter+0x1d4/0x330
[   46.643738]  ? tun_chr_read_iter+0x460/0x460
[   46.648124]  __vfs_write+0x7fb/0x9f0
[   46.651820]  vfs_write+0x463/0x8d0
[   46.655344]  SYSC_write+0x172/0x360
[   46.658951]  SyS_write+0x55/0x80
[   46.662298]  do_syscall_64+0x309/0x430
[   46.666166]  ? SYSC_read+0x360/0x360
[   46.669861]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[   46.675030] RIP: 0033:0x4447c9
[   46.678196] RSP: 002b:00007fff64c8fc28 EFLAGS: 00000297 ORIG_RAX: 0000000000000001
[   46.685883] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004447c9
[   46.693139] RDX: 000000000000fd87 RSI: 0000000020000600 RDI: 0000000000000004
[   46.700398] RBP: 00000000006cf018 R08: 00007fff64c8fda8 R09: 00007fff00006bda
[   46.707646] R10: 0000000000005fe7 R11: 0000000000000297 R12: 00000000004020d0
[   46.714892] R13: 0000000000402160 R14: 0000000000000000 R15: 0000000000000000
[   46.722140] 
[   46.723741] Uninit was created at:
[   46.727260]  kmsan_internal_poison_shadow+0xb8/0x1b0
[   46.732343]  kmsan_kmalloc+0x94/0x100
[   46.736120]  kmsan_slab_alloc+0x11/0x20
[   46.740080]  __kmalloc_node_track_caller+0xaed/0x11c0
[   46.745255]  __alloc_skb+0x2cf/0x9f0
[   46.748948]  alloc_skb_with_frags+0x1d4/0xb20
[   46.753429]  sock_alloc_send_pskb+0xb56/0x1190
[   46.758002]  tun_get_user+0x2242/0x7c60
[   46.761963]  tun_chr_write_iter+0x1d4/0x330
[   46.766269]  __vfs_write+0x7fb/0x9f0
[   46.769960]  vfs_write+0x463/0x8d0
[   46.773480]  SYSC_write+0x172/0x360
[   46.777091]  SyS_write+0x55/0x80
[   46.780443]  do_syscall_64+0x309/0x430
[   46.784308]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[   46.789475] ==================================================================
[   46.797334] Disabling lock debugging due to kernel taint
[   46.802760] Kernel panic - not syncing: panic_on_warn set ...
[   46.802760] 
[   46.810106] CPU: 0 PID: 4543 Comm: syz-executor355 Tainted: G    B            4.16.0+ #87
[   46.818394] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   46.827727] Call Trace:
[   46.830299]  dump_stack+0x185/0x1d0
[   46.833906]  panic+0x39d/0x940
[   46.837107]  ? pppoe_rcv+0xcef/0x10e0
[   46.840894]  kmsan_report+0x238/0x240
[   46.844685]  __msan_warning_32+0x6c/0xb0
[   46.848724]  pppoe_rcv+0xcef/0x10e0
[   46.852346]  __netif_receive_skb_core+0x47df/0x4a90
[   46.857348]  ? pppoe_disc_rcv+0xd20/0xd20
[   46.861475]  netif_receive_skb_internal+0x49d/0x630
[   46.866477]  ? netif_receive_skb+0x47/0x240
[   46.870777]  netif_receive_skb+0x230/0x240
[   46.874998]  tun_get_user+0x740f/0x7c60
[   46.878964]  tun_chr_write_iter+0x1d4/0x330
[   46.883270]  ? tun_chr_read_iter+0x460/0x460
[   46.887659]  __vfs_write+0x7fb/0x9f0
[   46.891367]  vfs_write+0x463/0x8d0
[   46.894890]  SYSC_write+0x172/0x360
[   46.898497]  SyS_write+0x55/0x80
[   46.901844]  do_syscall_64+0x309/0x430
[   46.905712]  ? SYSC_read+0x360/0x360
[   46.909408]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[   46.914588] RIP: 0033:0x4447c9
[   46.917752] RSP: 002b:00007fff64c8fc28 EFLAGS: 00000297 ORIG_RAX: 0000000000000001
[   46.925438] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004447c9
[   46.932685] RDX: 000000000000fd87 RSI: 0000000020000600 RDI: 0000000000000004
[   46.939933] RBP: 00000000006cf018 R08: 00007fff64c8fda8 R09: 00007fff00006bda
[   46.947195] R10: 0000000000005fe7 R11: 0000000000000297 R12: 00000000004020d0
[   46.954465] R13: 0000000000402160 R14: 0000000000000000 R15: 0000000000000000
[   46.962178] Dumping ftrace buffer:
[   46.965704]    (ftrace buffer empty)
[   46.969391] Kernel Offset: disabled
[   46.973003] Rebooting in 86400 seconds..