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 '10.128.0.47' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   24.122634] detected buffer overflow in memcpy
[   24.127473] ------------[ cut here ]------------
[   24.132205] kernel BUG at lib/string.c:1052!
[   24.136804] invalid opcode: 0000 [#1] SMP KASAN
[   24.141458] Dumping ftrace buffer:
[   24.144969]    (ftrace buffer empty)
[   24.148648] Modules linked in:
[   24.151812] CPU: 1 PID: 4265 Comm: syzkaller394057 Not tainted 4.16.0-rc7+ #369
[   24.159224] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   24.168557] RIP: 0010:fortify_panic+0x13/0x20
[   24.173027] RSP: 0018:ffff8801c0baf940 EFLAGS: 00010282
[   24.178360] RAX: 0000000000000022 RBX: 1ffff10038175f2d RCX: 0000000000000000
[   24.185602] RDX: 0000000000000022 RSI: 1ffff10038175edd RDI: ffffed0038175f1c
[   24.192840] RBP: ffff8801c0baf940 R08: 0000000000000000 R09: 0000000000000000
[   24.200078] R10: 0000000000000006 R11: 0000000000000000 R12: ffff8801c0baf9e8
[   24.207319] R13: ffff8801c0baf988 R14: ffff8801c0bafaa8 R15: 000000000000fa00
[   24.214574] FS:  00000000019a4880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
[   24.222770] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.228621] CR2: 0000000020000140 CR3: 00000001c12ff001 CR4: 00000000001606e0
[   24.235864] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   24.243106] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   24.250369] Call Trace:
[   24.252932]  ucma_join_ip_multicast+0x37a/0x3c0
[   24.257574]  ? ucma_join_multicast+0x130/0x130
[   24.262129]  ? check_same_owner+0x320/0x320
[   24.266426]  ? __might_sleep+0x95/0x190
[   24.270375]  ? kasan_check_write+0x14/0x20
[   24.274583]  ucma_write+0x2d6/0x3d0
[   24.278181]  ? ucma_join_multicast+0x130/0x130
[   24.282741]  ? ucma_close_id+0x60/0x60
[   24.286605]  ? ucma_close_id+0x60/0x60
[   24.290464]  __vfs_write+0xef/0x970
[   24.294062]  ? kernel_read+0x120/0x120
[   24.297929]  ? rcu_pm_notify+0xc0/0xc0
[   24.301788]  ? putname+0xee/0x130
[   24.305219]  ? security_file_permission+0x89/0x1e0
[   24.310119]  ? rw_verify_area+0xe5/0x2b0
[   24.314148]  ? __fdget_raw+0x20/0x20
[   24.317834]  vfs_write+0x189/0x510
[   24.321347]  SyS_write+0xef/0x220
[   24.324768]  ? filp_open+0x70/0x70
[   24.328276]  ? SyS_read+0x220/0x220
[   24.331874]  ? do_syscall_64+0xb7/0x940
[   24.335818]  ? SyS_read+0x220/0x220
[   24.339418]  do_syscall_64+0x281/0x940
[   24.343275]  ? __do_page_fault+0xc90/0xc90
[   24.347477]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   24.352205]  ? syscall_return_slowpath+0x550/0x550
[   24.357102]  ? syscall_return_slowpath+0x2ac/0x550
[   24.362002]  ? prepare_exit_to_usermode+0x350/0x350
[   24.366998]  ? entry_SYSCALL_64_after_hwframe+0x52/0xb7
[   24.372339]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   24.377156]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[   24.382312] RIP: 0033:0x43fd29
[   24.385470] RSP: 002b:00007ffff57bdc78 EFLAGS: 00000213 ORIG_RAX: 0000000000000001
[   24.393148] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fd29
[   24.400388] RDX: 0000000000000118 RSI: 0000000020000f80 RDI: 0000000000000003
[   24.407629] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8
[   24.414866] R10: 00000000004002c8 R11: 0000000000000213 R12: 0000000000401650
[   24.422117] R13: 00000000004016e0 R14: 0000000000000000 R15: 0000000000000000
[   24.429384] Code: 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 48 89 df e8 d2 a7 3f fb eb de 55 48 89 fe 48 c7 c7 c0 43 44 87 48 89 e5 e8 d5 05 f1 fa <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 41 57 41 56 
[   24.448565] RIP: fortify_panic+0x13/0x20 RSP: ffff8801c0baf940
[   24.454568] ---[ end trace 1b9f94576855f965 ]---
[   24.459321] Kernel panic - not syncing: Fatal exception
[   24.465132] Dumping ftrace buffer:
[   24.468644]    (ftrace buffer empty)
[   24.472322] Kernel Offset: disabled
[   24.475916] Rebooting in 86400 seconds..