Issued:
2010-03-25
Updated:
2010-03-25

RHBA-2010:0174 - strace bug fix update

Synopsis

strace bug fix update

Type/Severity

Bug Fix Advisory

Topic

An updated strace package that fixes two bugs is now available.

Description

The strace program intercepts and records the system calls called and received by a running process. Strace can print a record of each system call, its arguments and its return value.

This updated strace package fixes the following bugs:

  • when an strace process was terminated by a signal while the tracee was executing a fork or clone system call the tracee was forcefully terminated instead of being cleanly detached. This update corrects this: tracees are now cleanly detached as expected when an strace process is terminated in the circumstance noted above. (BZ#558471)

  • RHBA-2010:0047, the strace update released to address BZ#548363, uncovered a race condition on Itanium-based systems. (See References below for a link to this previous release.) The race condition presented when strace attached to a process while said process was executing the execve system call. With this update, strace now reliably detects this post-execve trap and, consequently, avoids the race condition. (BZ#564364)

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.http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for x86_64 - Extended Update Support5.4x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support5.4ia64
Red Hat Enterprise Linux for x86_64 - Extended Update Support5.4i386
Red Hat Enterprise Linux for Power, big endian5ppc
Red Hat Enterprise Linux for Power, big endian - Extended Update Support5.4ppc
Red Hat Enterprise Linux for IBM z Systems5s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support5.4s390x
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

  • strace-4.5.18-5.el5_4.4.ppc.rpm
  • strace-4.5.18-5.el5_4.4.s390x.rpm
  • strace-4.5.18-5.el5_4.4.i386.rpm
  • strace-4.5.18-5.el5_4.4.src.rpm
  • strace-4.5.18-5.el5_4.4.ia64.rpm
  • strace-4.5.18-5.el5_4.4.x86_64.rpm
  • strace64-4.5.18-5.el5_4.4.ppc64.rpm

Fixes

CVEs

(none)

References

Additional information