Hi Vincent, On 15 November 2017 at 21:37, LE GARREC Vincent <legarrec.vinc...@gmail.com> wrote: > Dear, > > I ran stress-test under fuzzing and I found a crash. > > I'm not really comfortable with pixman so I don't really know how to report > you the problem. > > Please find enclosed modifications I needed to apply to allow fuzzing with > afl. > I disabled HAVE_GCC_VECTOR_EXTENSIONS and adapt smallprng_rand_r to read > from buffer instead of random data based on seed. > > To make the stress-test crashes, run ./stress-test rasterize_edges_8.crash > > I hope it's not my patch that make pixman crashes. > > Please, tell me if you need further information or if I did something wrong. > I'm not that muhc of a pixman to provide you with feedback on the exact issue.
Small question though: Have you considered adding a argument to the program which changes rand -> input file method? It will allow you to drop the HAVE_GCC_VECTOR_EXTENSIONS workarounds and upstream the changes. This way one will be able to do some extensive testing prior to rolling a potentially vulnerable pixman release to the masses. HTH Emil _______________________________________________ Pixman mailing list Pixman@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/pixman
