[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 19.840596] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 23.939628] random: sshd: uninitialized urandom read (32 bytes read) [ 24.313294] random: sshd: uninitialized urandom read (32 bytes read) [ 25.187715] random: sshd: uninitialized urandom read (32 bytes read) [ 25.349215] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.6' (ECDSA) to the list of known hosts. [ 30.773150] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 30.866158] ================================================================== [ 30.873681] BUG: KASAN: slab-out-of-bounds in pdu_read+0x90/0xd0 [ 30.879839] Read of size 26995 at addr ffff8801b450846d by task syz-executor239/4437 [ 30.887703] [ 30.889332] CPU: 0 PID: 4437 Comm: syz-executor239 Not tainted 4.18.0-rc6+ #165 [ 30.896782] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.906127] Call Trace: [ 30.908711] dump_stack+0x1c9/0x2b4 [ 30.912327] ? dump_stack_print_info.cold.2+0