Red Hat Bugzilla – Bug 224424
NFS mishandles dentries during create style operations
Last modified: 2007-11-30 17:07:28 EST
Description of problem:
The NFS client can double drop dentries if an error occurs during the
This problem was discovered by doing code inspection while working
on another bug, 128616 for RHEL-3.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
The problem is that the NFS client calls a routine called nfs_instantiate()
to instantiate dentries. This routine will d_drop() the dentry if it can
not instantiate the dentry. The problem is that the NFS client also needs
to d_drop() the dentry is any other errors occur during the process of
creating a new file, directory, special device, or symbolic link too.
This d_drop() support should only live in one place to avoid the possibility
of calling it incorrectly.
Created attachment 146583 [details]
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release. Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products. This request is not yet committed for inclusion in an Update
This request was evaluated by Red Hat Kernel Team for inclusion in a Red
Hat Enterprise Linux maintenance release, and has moved to bugzilla
committed in stream U6 build 55.12. A test kernel with this patch is available
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.