Updating kernel on SLE 11 SP1 breaks CIFS

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Environment

SUSE Linux Enterprise Server 11 Service Pack 1
SUSE Linux Enterprise Desktop 11 Service Pack 1

Situation

Updating the kernel to version 2.6.32.13-0.5.1 causes the following problem.
The updated machine has a CIFS share mounted.
Browsing the mount point via the command line or GUI is fine, but as soon as a file is read or copied, the machine hangs. To recover from this condition a reboot is required.
The problem did not exist prior to updating the kernel.

This is caused by a change introduced the Linux kernel version 2.6.32.13-0.5.

Resolution

Downgrading the kernel resolves the problem.
SUSE has fixed the issue in kernel version 2.6.32.19-0.2.1 released in September 2010 and later versions.
From the changelog of kernel 2.6.32.19-0.2.1 :
* Wed Aug 04 2010 sjayaraman@suse.de
- patches.fixes/cifs-fix-vfs-busy-inode-errors: Revert the commit that fixes
page refcount leak which is not required but causes hangs (bnc#627518).

Disclaimer

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