On Wed, Mar 9, 2016 at 9:58 AM, Andy Lutomirski <[email protected]> wrote: > On Tue, Mar 8, 2016 at 5:24 PM, Andy Lutomirski <[email protected]> wrote: >> musl implements system call cancellation in an unusual but clever way. >> When a thread issues a cancellable syscall, musl issues the syscall >> through a special thunk that looks roughly like this: >> > > FWIW, this patch fails disastrously on 64-bit kernels. I fixed it, > but it needs kbuild changes. I'll send those out to the maintainers.
This version should be okay: https://git.kernel.org/cgit/linux/kernel/git/luto/linux.git/commit/?h=x86/vdso&id=fed6d35d3941bc53896ab80b5c8d68d54cc00347 You'll need the parent, too, if you want to test. I'm going to give the 0day bot a good long chew, since the parent change is a little bit scary. --Andy
