** Description changed: + [Impact] + When using xen as a hypervisor on AMD Bulldozer/Opteron hardware, 'xm list' will cause an 'invalid opcode' trap and crash. + + [Development Fix] + This is fixed in quantal. + + [Stable Fix] + A fix can be backported from quantal into precise. + + [Test Case] + Install xen on an AMD machine with AVX/FMA4 extensions. Run 'xm list'. It is expected to not cause an invalid opcode trap. + + [Regression Potential] + This patch add checks proper FMA4 and AVX detection in eglibc. + + -- + Ubuntu Version: 12.04 (precise) libc6: 2.15-0ubuntu5 xen-hypervisor-4.1-amd64: 4.1.2-2ubuntu2 linux-image-generic: 3.2.0.18.20 Everytime I try to run 'xm list' on a new AMD Opteron 6274 system (Bulldozer architecture) I'm getting a crash. I couldn't even file a bug report through "apport-bug". Repeating the same procedure with Ubuntu Oneiric showed no problems at all. dmesg showed following messages: [ 479.891581] xm[1746] trap invalid opcode ip:7fd684f8a5fc sp:7fff3ebb3c70 error:0 in libm-2.15.so[7fd684f48000+f9000] [ 479.937611] apport[1758] trap invalid opcode ip:7fd6cb9ea5fc sp:7fff9bbc06b0 error:0 in libm-2.15.so[7fd6cb9a8000+f9000] [ 479.937641] Process 1758(apport) has RLIMIT_CORE set to 1 [ 479.937645] Aborting core
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/956051 Title: libc6 crash while running 'xm' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/956051/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
