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  1. Bug #464552
  2. Comment #31

Comment 31 for bug 464552

Revision history for this message
Stefan Bader (smb) wrote :

@Martin, I bisected my problem down to

commit 8bf095f8b62c5fdfe55a8c95be775ea62be7bc10
Author: Kees Cook <email address hidden>
Date: Sun Oct 18 09:16:44 2009 -0700

    UBUNTU: SAUCE: [x86] fix report of cs-limit nx-emulation
    BugLink: http://bugs.launchpad.net/bugs/454285

which does have only effect for i386 non-pae kernels, in which case the system accidentally assumes it has NX capabilities. I will update the other bug accordingly.

@Simon, to check whether you are affected the same: if you got a cpu which has no nx mentioned in cat /proc/cpuinfo but claims "NX (Execute Disable) protection: active" in dmesg, this is wrong. You might want to try the quick test kernel I put to http://people.canonical.com/~smb/bug464552. If that helps we can put this bug into "verification done".