RHBA-2013:0347 - Bug Fix Advisory

Topic

Updated valgrind packages that fix several bugs and add an enhancement are now
available for Red Hat Enterprise Linux 6.

Description

The valgrind packages provide a programming utility for debugging memory,
detecting memory leaks, and profiling.

The valgrind packages have been upgraded to upstream version 3.8.1, which
provides a number of bug fixes over the previous version. (BZ#823005)

This update fixes the following bugs:

• When running a large program under valgrind, the "Valgrind: FATAL:

VG_N_SEGNAMES is too low." error messages could be returned. With this update,
the compile time constants have been increased (VG_N_SEGMENTS to 50000,
VG_N_SEGNAMES to 25000) and these errors no longer occur. (BZ#730303)

• Previously, the valgrind gdbserver did not properly report exit or a

fatal-signal process termination to the gdb debugger. Consequently, the "Remote
connection closed" error messages were returned. This bug has been fixed in the
code and the process termination is now properly reported in gdb. (BZ#862795)

• On IBM S/390 architecture, valgrind could report a "Conditional jump or move

depends on uninitialized value(s)" warning message for the tsearch() function in
glibc. This update includes a standard suppression for these warning messages,
which are no longer reported. (BZ#816244)

This update also adds the following enhancement:

• The embedded gdbserver has been added to allow integration of valgrind with

the gdb debugger. (BZ#672959)

Users of valgrind are advised to upgrade to these updated packages, which fix
these bugs and add this enhancement.

Solution

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

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/knowledge/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems) 6 s390x

Fixes

• BZ - 672959 - [RFE] Integrate valgrind with gdb possibly through gdbserver.
• BZ - 730303 - Need to increase VG_N_SEGNAMES
• BZ - 816244 - tsearch conditional jump or move depends on uninitialized value
• BZ - 862795 - script debugging via valgrind gdb server behaves strange, throwing error where it shouldn't
• BZ - 866941 - Regression vex amd64->IR: unhandled instruction bytes: 0xF0 0xF 0xC0 0x10 0x84 0xD2 0xF 0x95 (lock xaddb)

CVEs

(none)

References

(none)