Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: udp4_lib_lookup2+0x7ea/0x7f0 net/ipv4/udp.c:455 CPU: 1 PID: 26067 Comm: syz-executor2 Not tainted 4.20.0-rc7-next-20181224 #190 QAT: Invalid ioctl Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: Kernel Offset: disabled Rebooting in 86400 seconds..