[Bug 956051] Re: libc6 crash while running 'xm'

[Alexander Rusa]

When I install Ubuntu 12.04 as Guest System on a Xen Server I get this
dmesg-errors all the time:

Jul 25 05:05:25 xxxx kernel: [129839.757278] landscape-sysin[27526]
trap invalid opcode ip:7f3c3e11a5fc sp:7fff1a08fc50 error:0 in
libm-2.15.so[7f3c3e0d8000+f9000]
Jul 25 05:05:25 xxxx kernel: [129839.797121] apport[27527] trap invalid
opcode ip:7f434d23a5fc sp:7fff3ef75670 error:0 in
libm-2.15.so[7f434d1f8000+f9000]

And when I type a non-existing command into the shell I get a core-
dumped-error:

root at xxxx:~# asdf
Illegal instruction (core dumped)

For me this is a severe problem (not "medium")... I will have to remove
Ubuntu 12.04 from the supported vserver-distributions until this problem
is solved!

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https://bugs.launchpad.net/bugs/956051

Title:
  libc6 crash while running 'xm'

Status in “eglibc” package in Ubuntu:
  Confirmed
Status in “eglibc” source package in Precise:
  Confirmed

Bug description:
  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

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