RHEA-2015:2043 - Product Enhancement Advisory

Topic

New devtoolset-4-valgrind packages are now available as a part of Red Hat
Developer Toolset 4.0 for Red Hat Enterprise Linux.

Description

Valgrind is an instrumentation framework that is used for debugging memory,
detecting memory leaks, and profiling applications. The devtoolset-4-valgrind
packages provide the Red Hat Developer Toolset version of Valgrind.

This enhancement update adds the devtoolset-4-valgrind packages to Red Hat
Developer Toolset 4.0 for Red Hat Enterprise Linux. These packages include
Valgrind 3.10.1. This release provides a number of bug fixes over the version
included in Red Hat Developer Toolset 3.1. Among others:

• Previously, Valgrind rejected unwind information found in the redzone below

the current stack when generating backtraces as used in error messages. As a
consequence, backtraces in error messages might have been truncated to one or a
few frames. With this update, the Valgrind unwind logic is able to access
information in the redzone, and backtraces in error messages are no longer
truncated.

• Valgrind's memcheck tool did not intercept certain internal glibc mempcpy()

calls. As a consequence, memcheck could sometimes produce false error messages
about invalid memory accesses inside the glibc library. Valgrind has been fixed
to intercept internal glibc mempcpy() calls and to verify the input arguments to
the function correctly.

• Previously, Valgrind did not recognize the syncfs() system call. Consequently,

when a program running under Valgrind called syncfs(), Valgrind returned an
error message about an unknown system call. With this update, Valgrind correctly
recognizes syncfs(), and the described problem no longer occurs.

(BZ#1240806)

Note that Red Hat Developer Toolset supports only the Open MPI application
binary interface (ABI) version 1.6, whereas Red Hat Enterprise Linux 7.2
supports Open MPI 1.10. The two versions are binary incompatible. As a
consequence, programs that are built against Open MPI 1.10 cannot be run under
Valgrind included in Red Hat Developer Toolset. Use the Red Hat Enterprise Linux
7.2 version of Valgrind for programs linked against Open MPI version 1.10.
(BZ#1258843)

All users who require devtoolset-4-valgrind are advised to install these new
packages.

Solution

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.7 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.6 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.5 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.4 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.3 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.2 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.1 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 6.7 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 6.6 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 6 x86_64
• Red Hat Software Collections (for RHEL Workstation) 1 for RHEL 7 x86_64
• Red Hat Software Collections (for RHEL Workstation) 1 for RHEL 6 x86_64
• Red Hat Software Collections (for RHEL Server) from RHUI 1 for RHEL 7 x86_64
• Red Hat Software Collections (for RHEL Server) from RHUI 1 for RHEL 6 x86_64

Fixes

• BZ - 1268438 - Unrecognised instruction (cvtps2pd)

CVEs

(none)

References

(none)