Ubuntu
glibc package

  1. Jammy (22.04)
  2. Bug #2037661
  3. Comment #0

Comment 0 for bug 2037661

Revision history for this message
Heather Lemon (hypothetical-lemon) wrote :

[IMPACT]

This is a continuation of the lp # 2011421

Intel TDX Azure instances are segfaulting due to an error in glibc.

The glibc error is fixed with this patch [1]

[TEST CASE]

Test case requires an azure TDX instance.

Testing instructions from [2] being

getconf -a | grep CACHE

showing non-zero entries for the cache values

[REGRESSION POTENTIAL]
Compatibility impact on applications which invoke CPUID directly.
(they might have to be patched in ways similar to glibc). But at least the glibc patch appears to be working.

[OTHER]

This will affect Mantic, Jammy, Focal

[0] https://azure.microsoft.com/en-us/blog/azure-confidential-computing-on-4th-gen-intel-xeon-scalable-processors-with-intel-tdx/
[1] https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=1493622f4f9048ffede3fbedb64695efa49d662a
[2] https://sourceware.org/bugzilla/show_bug.cgi?id=30643#c12