Issued:
2013-02-20
Updated:
2013-02-20

RHBA-2013:0282 - strace bug fix and enhancement update

Synopsis

strace bug fix and enhancement update

Type/Severity

Bug Fix Advisory (none)

Topic

Updated strace packages that fix two bugs and add one enhancement are now available for Red Hat Enterprise Linux 6.

Description

The strace packages provide a utility to intercept and record the system calls called and received by a running process. The strace utility can print a record of each system call, its arguments and its return value. The strace utility is useful for diagnosing, debugging and instructional purposes.

This update fixes the following bugs:

  • Prior to this update, the strace utility extracted arguments for the "semtimedop" system call from the wrong location on the IBM System z platforms. As a consequence, arguments for the "semtimedop" system call were incorrectly displayed. This update modifies strace to extract the arguments from the correct memory location so that the arguments for the "semtimedop" system call are displayed as expected. (BZ#759569)

  • Prior to this update, the strace utility used special breakpoints to trace fork/vfork/clone system calls. As a consequence, sometimes strace could cause applications to crash when following fork/vfork/clone system calls. This update modifies strace to use PTRACE_SETOPTIONS to set the behavior at fork/vfork/clone system calls and applications no longer crash. (BZ#837183)

This update also adds the following enhancement:

  • Prior to this update, strace incorrectly decoded system calls when tracing a 32-bit process on a 64-bit machine, because strace on IBM System z platforms is not multi-arch aware. This update provides an additional strace executable (strace32) which can be used to trace 32-bit processes on 64-bit machines. (BZ#809917)

All users of strace 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

ProductVersionArch
Red Hat Enterprise Linux for Scientific Computing6x86_64
Red Hat Enterprise Linux for Power, big endian6ppc64
Red Hat Enterprise Linux for IBM z Systems6s390x
Red Hat Enterprise Linux Workstation6x86_64
Red Hat Enterprise Linux Workstation6i386
Red Hat Enterprise Linux Server6x86_64
Red Hat Enterprise Linux Server6i386
Red Hat Enterprise Linux Server from RHUI6x86_64
Red Hat Enterprise Linux Server from RHUI6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)6s390x
Red Hat Enterprise Linux Desktop6x86_64
Red Hat Enterprise Linux Desktop6i386

Updated Packages

  • strace32-4.5.19-1.17.el6.s390.rpm
  • strace-debuginfo-4.5.19-1.17.el6.s390x.rpm
  • strace-4.5.19-1.17.el6.s390x.rpm
  • strace-4.5.19-1.17.el6.ppc64.rpm
  • strace-debuginfo-4.5.19-1.17.el6.i686.rpm
  • strace-debuginfo-4.5.19-1.17.el6.ppc64.rpm
  • strace32-4.5.19-1.17.el6.ppc.rpm
  • strace-debuginfo-4.5.19-1.17.el6.s390.rpm
  • strace-4.5.19-1.17.el6.x86_64.rpm
  • strace-4.5.19-1.17.el6.i686.rpm
  • strace-4.5.19-1.17.el6.src.rpm
  • strace-debuginfo-4.5.19-1.17.el6.x86_64.rpm
  • strace-debuginfo-4.5.19-1.17.el6.ppc.rpm

Fixes

CVEs

(none)

References

(none)

Additional information