Hi Greg, Greg Ungerer wrote, > >>What do you think? Is it a Kernel bug or a C library problem? > > What version of linux kernel?
4.5.3 > What version of gcc? 4.9.3 > This sounds a lot like the problem I fixed in linux commit a9551799 > ("m68k: Use conventional function parameters for do_sigreturn"). > > Definitely try that first. Jackpot. Thanks a lot. This works! May be some candidate for LTS kernels. best regards Waldemar