(In reply to Borislav Petkov from comment #22) > Good to know, I guess we can use that if we ever need to bisect. > > In any case, here's a fixed kernel to test: > > https://download.suse.de/ibs/home:/bpetkov:/15sp3-mpx/standard/ > > With it, it says here: > > $./mpx-out-of-bounds 10 > No MPX support > dog[0]: 'd' > dog[1]: 'o' > dog[2]: 'g' > dog[3]: '' > dog[4]: 's' > dog[5]: 'e' > dog[6]: 'c' > dog[7]: 'r' > dog[8]: '3' > dog[9]: 't' I've installed the kernel and reproduced the behaviour. Also confirmed that the running example still works with -m64. Looks good from user perspective, AFAICT.