Does Red Hat Enterprise Linux 6 include the patch for fixing data corruption with NFS short reads ?
Environment
- Red Hat Enterprise Linux 6
- Linux NFS client
Issue
- Does Red Hat Enterprise Linux 6 include the patch for fixing data corruption with NFS short reads ?
- Does Red Hat Enterprise Linux 6 have the required NFS patch mentioned in SGI problem Bulletin 202265 ?
Resolution
Red Hat Enterprise Linux 6 update 3 and higher has the required patched.
RHEL 6 update 3 Errata https://rhn.redhat.com/errata/RHSA-2012-0862.html
RHEL 6 update 2 EUS Errata https://rhn.redhat.com/errata/RHBA-2013-0184.html
Root Cause
NFS v2 and v3 xdr routines conditionally update res->count. Read retries after a short NFS READ call may not update the res->count field causing nfs_readpage_truncate_uninitialised_page() to zerofill incorrect portion.
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