[Bug 1193139] [x86_64, 32-bit] mpx support broken

https://bugzilla.suse.com/show_bug.cgi?id=1193139 https://bugzilla.suse.com/show_bug.cgi?id=1193139#c6 --- Comment #6 from Tom de Vries --- (In reply to Borislav Petkov from comment #5)

So I just installed a leap 15.3 guest:

[root@localhost: ~/mpx> gcc -m32 -Wall -o mpx-out-of-bounds mpx-out-of-bounds.c -mmpx -fcheck-pointer-bounds [root@localhost: ~/mpx> ./mpx-out-of-bounds 10 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' [root@localhost: ~/mpx> uname -a Linux localhost 5.3.18-59.34-default #1 SMP Thu Nov 11 12:18:45 UTC 2021 (a2a53aa) x86_64 x86_64 x86_64 GNU/Linux

Or do I need a real hw machine that supports MPX?

You'll need a machine with mpx in /proc/cpuinfo flags. I don't know whether that needs to be real hw, or can also be a VM. I reproduced it on real hw, and the failure is all over OBS as well, so I imagine a VM should also work. -- You are receiving this mail because: You are the assignee for the bug.