Issued:

2010-01-28

Updated:

2010-01-28

RHBA-2010:0070 - systemtap bug fix update

Synopsis

systemtap bug fix update

Type/Severity

Bug Fix Advisory

Topic

Updated systemtap packages that fix a bug that could cause kernel panics are now available.

Description

SystemTap is an instrumentation system for systems running the Linux kernel, version 2.6. Developers can write scripts to collect data on the operation of the system.

This update addresses the following issue:

• abnormal shutdowns, triggered at the same time as probe startups, triggered a race condition, and consequent kernel panics, when multiple systemtap commands ran simultaneously. The probe setup could be called during or after the probe shutdown which lead to kernel callbacks remaining registered after modules were unloaded. Setup activities, shutdown activities and related flags are now guarded by mutex (mutual exclusion) algorithms, ensuring strict ordering which obviates the race condition and prevents the kernel panics from occurring. This update also includes a new test -- /usr/share/systemtap/testsuite/systemtap.base/pr10854.exp -- that checks for this race condition. (BZ#543058)

All systemtap users should upgrade to these updated packages, which resolve this issue.

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

Updated Packages

• systemtap-server-0.9.7-5.el5_4.1.i386.rpm
• systemtap-sdt-devel-0.9.7-5.el5_4.1.ppc64.rpm
• systemtap-testsuite-0.9.7-5.el5_4.1.x86_64.rpm
• systemtap-0.9.7-5.el5_4.1.i386.rpm
• systemtap-initscript-0.9.7-5.el5_4.1.x86_64.rpm
• systemtap-sdt-devel-0.9.7-5.el5_4.1.s390.rpm
• systemtap-runtime-0.9.7-5.el5_4.1.ia64.rpm
• systemtap-runtime-0.9.7-5.el5_4.1.s390x.rpm
• systemtap-server-0.9.7-5.el5_4.1.ia64.rpm
• systemtap-initscript-0.9.7-5.el5_4.1.s390x.rpm
• systemtap-initscript-0.9.7-5.el5_4.1.i386.rpm
• systemtap-server-0.9.7-5.el5_4.1.ppc64.rpm
• systemtap-0.9.7-5.el5_4.1.ia64.rpm
• systemtap-testsuite-0.9.7-5.el5_4.1.s390x.rpm
• systemtap-0.9.7-5.el5_4.1.s390x.rpm
• systemtap-testsuite-0.9.7-5.el5_4.1.i386.rpm
• systemtap-server-0.9.7-5.el5_4.1.s390x.rpm
• systemtap-runtime-0.9.7-5.el5_4.1.i386.rpm
• systemtap-client-0.9.7-5.el5_4.1.i386.rpm
• systemtap-testsuite-0.9.7-5.el5_4.1.ppc64.rpm
• systemtap-0.9.7-5.el5_4.1.x86_64.rpm
• systemtap-initscript-0.9.7-5.el5_4.1.ia64.rpm
• systemtap-0.9.7-5.el5_4.1.src.rpm
• systemtap-sdt-devel-0.9.7-5.el5_4.1.ia64.rpm
• systemtap-runtime-0.9.7-5.el5_4.1.ppc64.rpm
• systemtap-sdt-devel-0.9.7-5.el5_4.1.s390x.rpm
• systemtap-sdt-devel-0.9.7-5.el5_4.1.i386.rpm
• systemtap-initscript-0.9.7-5.el5_4.1.ppc64.rpm
• systemtap-client-0.9.7-5.el5_4.1.s390x.rpm
• systemtap-runtime-0.9.7-5.el5_4.1.x86_64.rpm
• systemtap-client-0.9.7-5.el5_4.1.ia64.rpm
• systemtap-client-0.9.7-5.el5_4.1.x86_64.rpm
• systemtap-server-0.9.7-5.el5_4.1.x86_64.rpm
• systemtap-client-0.9.7-5.el5_4.1.ppc64.rpm
• systemtap-sdt-devel-0.9.7-5.el5_4.1.x86_64.rpm
• systemtap-testsuite-0.9.7-5.el5_4.1.ia64.rpm
• systemtap-0.9.7-5.el5_4.1.ppc64.rpm

Fixes

• This content is not included.BZ - 543058

CVEs

(none)

References

(none)

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.