On Fri, Jan 10, 2014 at 11:56:07AM -0800, Andy Lutomirski wrote: > - The perf callchain code tries to read from a bad userspace pointer > (not sure why -- the ip value in the vsyscall page *is* readable). > That traps (as expected), but the trap handler injects SIGSEGV due to > sig_on_uaccess_fault==1.
So the perf thing tries to walk the entire stack in order to obtain a callchain. Its fairly common to hit crap when attempting this :-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
