RHBA-2013:0956 - Bug Fix Advisory

Topic

Updated sg3_utils packages that fix one bug are now available for Red Hat
Enterprise Linux 6.

Description

The sg3_utils packages contain a collection of tools for SCSI devices that use
the Linux SCSI generic (sg) interface. This collection includes utilities for
database copying based on "dd" syntax and semantics (the "sg_dd", "sgp_dd" and
"sgm_dd" commands), INQUIRY data checking and associated pages ("sg_inq"), mode
and log page checking ("sg_modes" and "sg_logs"), disk spinning ("sg_start") and
self-tests ("sg_senddiag"), as well as other utilities. It also contains the
rescan-scsi-bus.sh script.

This update fixes the following bug:

• The logic used in the show_devices() function (as used by the "sginfo"

command) to identify the available storage devices opened these devices by
scanning the /dev directory. Consequently, the /dev/snapshot file was opened,
causing the system to prepare for suspend/hibernate and, as a part of that, to
block hot-added CPUs from being activated. To fix this bug, the logic used in
the show_devices() function to decide, which devices to open, has been adjusted.
As a result, running the "sginfo -l" command no longer has the unintended side
effect of blocking the activation of hot-added CPUs. (BZ#920687)

Users of sg3_utils are advised to upgrade to these updated packages, which fix
this bug.

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/site/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems) 6 s390x

Fixes

• BZ - 920687 - "sginfo -l" should not open /dev/snapshot

CVEs

(none)

References

(none)