RHBA-2012:1400 - Bug Fix Advisory

Topic

Updated device-mapper-multipath packages that fix two bugs are now available for
Red Hat Enterprise Linux 6 Extended Update Support.

Description

The device-mapper-multipath packages provide tools for managing multipath
devices using the device-mapper multipath kernel module.

This update fixes the following bugs:

• When certain multipathd threads started their operation, they did not check if

the multipathd daemon was being shut down. Consequently, multipathd could
terminate unexpectedly with a segmentation fault on shutdown. With this update,
the multipathd threads properly quit if they detect multipathd is shutting down
and the crashes no longer occur. (BZ#863462)

• Previously, multipathd was removing a map twice if it failed to create a

multipath device when adding a path device. Consequently, multipathd accessed
already freed memory and in some cases terminated unexpectedly when a new path
device was added. With this update, multipathd no longer performs the second
remove operation and the crashes no longer occur in the described scenario.
(BZ#866553)

All users of device-mapper-multipath are advised to upgrade to these updated
packages, which fix these bugs.

Solution

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

This update is available via 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 for x86_64 - Extended Update Support 6.1 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 6.1 i386
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 6.1 s390x
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 6.1 ppc64
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.1 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.1 i386
• Red Hat Virtual Storage Appliance (from RHUI) 6.1 x86_64

Fixes

CVEs

(none)

References

(none)