[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 16.156127] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 18.062728] random: sshd: uninitialized urandom read (32 bytes read) [ 18.247688] random: sshd: uninitialized urandom read (32 bytes read) [ 18.956921] random: sshd: uninitialized urandom read (32 bytes read) [ 19.091662] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.56' (ECDSA) to the list of known hosts. [ 24.497768] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 24.579185] ================================================================== [ 24.586581] BUG: KASAN: slab-out-of-bounds in fscache_alloc_cookie+0x7a9/0x880 [ 24.593921] Read of size 4 at addr ffff8801d7951e94 by task syz-executor601/4327 [ 24.601430] [ 24.603044] CPU: 0 PID: 4327 Comm: syz-executor601 Not tainted 4.18.0-rc6-next-20180725+ #18 [ 24.611597] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.620927] Call Trace: [ 24.623498] dump_stack+0x1c9/0x2b4 [ 24.627106] ? dump_stac