On 05/09/2012 09:12 PM, Oleg Nesterov wrote: > tgkill() can kill the wrong process/thread too, although it lessens the risk. > > But I don't really understand the problem. The traced thread can't go away > until the tracer does wait/detach, and thus its pid can't be reused? There's the non-leader thread execs and tracer didn't enable PTRACE_O_TRACEEXEC case at least, while you try to kill the thread that just execed, I think. Though that's quite pedantic. The tracer could prevent this in other ways. > May be, "by accident" above means something else, not pid reuse... Pffft, who writes buggy code anyway? ;-) -- Pedro Alves -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
