net_ratelimit: 7 callbacks suppressed TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: __lock_acquire+0x3959/0x5490 kernel/locking/lockdep.c:3820 CPU: 0 PID: 30516 Comm: syz-executor.5 Not tainted 5.2.0-rc5+ #37 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: Kernel Offset: disabled Rebooting in 86400 seconds..