Issued:
2011-11-22
Updated:
2011-11-22

RHBA-2011:1473 - ltrace bug fix update

Synopsis

ltrace bug fix update

Type/Severity

Bug Fix Advisory

Topic

An updated ltrace package that fixes various bugs is now available.

Description

The ltrace utility is a debugging program that runs a specified command until the command exits. While the command is executing, ltrace intercepts and records both the dynamic library calls called by the executed process and the signals received by the executed process. The ltrace utility can also intercept and print system calls executed by the process.

This updated ltrace package includes a fix for the following bug:

  • When tracing a process with many threads, the traced process would very likely be killed as the threads ran into breakpoins that wouldn't be handled by ltrace. With this update, ltrace attaches to the newly created threads, and carefully handles the breakpoints so that tracing events are not missed.

Note: when ltrace attached to a running process, that process could have been detached with the instruction pointer pointed mid-instruction, or with pending events, which would kill the process. This update improves the detach logic so that the process is left in a consistent state before detaching. (BZ#733216)

All users of ltrace are advised to upgrade to this updated package, which resolves these issues.

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 This content is not included.https://access.redhat.com/kb/docs/DOC-11259

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for Power, big endian5ppc
Red Hat Enterprise Linux for IBM z Systems5s390x
Red Hat Enterprise Linux Workstation5x86_64
Red Hat Enterprise Linux Workstation5i386
Red Hat Enterprise Linux Server5x86_64
Red Hat Enterprise Linux Server5ia64
Red Hat Enterprise Linux Server5i386
Red Hat Enterprise Linux Server from RHUI5x86_64
Red Hat Enterprise Linux Server from RHUI5i386
Red Hat Enterprise Linux Desktop5x86_64
Red Hat Enterprise Linux Desktop5i386

Updated Packages

  • ltrace-0.5-13.45svn.el5_7.12.ia64.rpm
  • ltrace-0.5-13.45svn.el5_7.12.i386.rpm
  • ltrace-0.5-13.45svn.el5_7.12.ppc64.rpm
  • ltrace-0.5-13.45svn.el5_7.12.ppc.rpm
  • ltrace-0.5-13.45svn.el5_7.12.x86_64.rpm
  • ltrace-0.5-13.45svn.el5_7.12.src.rpm
  • ltrace-0.5-13.45svn.el5_7.12.s390x.rpm

Fixes

(none)

CVEs

(none)

References

(none)

Additional information