RHBA-2011:0695 - Bug Fix Advisory

Topic

Updated dapl packages that fix multiple bugs are now available for Red Hat
Enterprise Linux 6.

Description

The dapl package provides a user space implementation of the DAT 2.0 API, and is
built to natively support InfiniBand/iWARP network technology.

This update fixes the following bugs:

• Under certain circumstances, when a thread was waiting on dapls_evd_dto_wait()

and the thread received a signal, the function would return an incorrect error
code, resulting in the application failing rather than retrying the request.
(BZ#626541)

• Previously, the function dapls_evd_dto_wait() returned, under certain

circumstances, an error code when a thread was waiting on the function and the
thread received a signal. Due to this behavior, the application failed. With
this update, the application retries the request. (BZ#626541)

• Red Hat Enterprise Linux 6 already supports a feature called "RoCE" (RDMA over

converged Ethernet). Previously, applications that utilize uDAPL could not use
the RDMA over converged Ethernet (RoCE) feature. This update adds these
additional entries to the dat.conf file. (BZ#636596)

• The dat_ia_open() function could, under under certain circumstances, fail to

return. With this update, the function returns as expected. (BZ#649360)

• Under certain circumstances dapl could fail to clean up its internal state,

resulting in subsequent usage of the library to fail. With this update, the
internal state is cleaned up as expected and the library can be used without
further problems. (BZ#667742)

• Previously, dapl could, under certain circumstances, fail to free allocated

memory, potentially causing the application to run out of memory and fail. Now,
dapl frees all allocated memory. (BZ#637980)

All dapl users should upgrade to these updated packages, which fix these bugs.

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

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• 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 - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 x86_64

Fixes

CVEs

(none)

References

(none)