> From: Masami Hiramatsu <mhiramat@xxxxxxxxxx> > > OK, schedule function will be the key. I guess the senario is.. > > 1) kretporbe replace the return address with kretprobe_trampoline on task1's kernel stack > 2) the task1 forks task2 before returning to the kretprobe_trampoline > 3) while copying the process with the kernel stack, task2->kretprobe_instances.first = NULL I think new process created by fork/clone uses a brand new kernel stack? I thought only user stack are copied. Otherwise any process launch should crash in the same way By the way, I can reproduce this on the latest branch(v4) TREND MICRO EMAIL NOTICE The information contained in this email and any attachments is confidential and may be subject to copyright or other intellectual property protection. If you are not the intended recipient, you are not authorized to use or disclose this information, and we request that you notify us by reply mail or telephone and delete the original message from your mail system. For details about what personal information we collect and why, please see our Privacy Notice on our website at: Read privacy policy<http://www.trendmicro.com/privacy>
