RHBA-2011:0354 - Bug Fix Advisory

Topic

Updated dapl packages that fix several bugs and add provider entries to the
dat.conf are now available.

Description

dapl provides a userspace implementation of the DAT 2.0 API and is built to
natively support InfiniBand and iWARP network technology.

This update addresses the following bugs:

• Under certain error conditions dapl did not allow the cp_ptr entry to be

cleaned up correctly in the internal link list. This could cause new
connections to fail. With this update, the entry is cleaned up correctly
and subsequent connections work as expected. (BZ#673989)

• Under certain error conditions dapl could fail to free allocated memory.

The consequent memory leak could, potentially, result in an out of memory
condition for the application. This update frees allocated memory
correctly, closing the leak. (BZ#673993)

• 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#675198)

• On systems with multiple InfiniBand (IB) adapters, especially if some

were configured and some not, the dat_ia_open() function could hang when
the driver queried the IB devices listed in /etc/dat.conf. This primarily
presented as IBM DB2 installations hanging before they completed. With this
update, the dat_ia_open() hang has been fixed and IBM DB2 installations, in
particular, now succeed as expected. (BZ#675205)

This update also adds the following enhancement:

• New provider entries for Mellanox RDMA over Converged Ethernet (RoCE)

devices were added to the dat.conf file. (BZ#675202)

Users should upgrade to these updated packages, which fix these issues.

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)