Description of problem:
An integer overflow flaw was found in the ext4_ext_get_blocks() function. This can trigger a BUG() on certain configuration of ext4 file systems.
Red Hat would like to thank Toshiyuki Okajima for reporting this issue.
This issue did not affect the version of Linux kernel as shipped with Red Hat
Enterprise Linux 3, 4 and Red Hat Enterprise MRG as they did not include
support for the Ext4 filesystem. A future kernel update in Red Hat Enterprise
Linux 5 will address this issue.
This issue has been addressed in following products:
Red Hat Enterprise Linux 5
Via RHSA-2010:0723 https://rhn.redhat.com/errata/RHSA-2010-0723.html