On Tue, May 10, 2016 at 6:23 PM, Andy Lutomirski <l...@amacapital.net> wrote: > Anyway, what kernel are you on? I think I fixed your specific issue in: > > commit 27747f8bc355a2808ca9e490ab6866acd85b4c16 > Author: Andy Lutomirski <l...@kernel.org> > Date: Thu Jul 30 20:32:42 2015 -0700 > > perf/x86/hw_breakpoints: Fix check for kernel-space breakpoints > > If that does fix it and it's a problem for you on older kernels, you > could ask for a backport.
Indeed, I was using a 3.12 kernel. This should indeed fix it, thanks. BTW, in that commit, why isn't va>=TASK_SIZE_MAX redundant with the second operand of ||? If va is aligned to a multiple of len (so va+len-1 doesn't overflow), then in what cases would the first condition be true with the second being false?
