tree 7a8e69867e323744d7431d50d73e479615f93595
parent 494f74a26c14d10bb26a45218b50feb75bdedeca
author Trond Myklebust <trond.myklebust@primarydata.com> 1451349005 -0500
committer Trond Myklebust <trond.myklebust@primarydata.com> 1451349425 -0500

NFS: Ensure we revalidate attributes before using execute_ok()

Donald Buczek reports that NFS clients can also report incorrect
results for access() due to lack of revalidation of attributes
before calling execute_ok().
Looking closely, it seems chdir() is afflicted with the same problem.

Fix is to ensure we call nfs_revalidate_inode_rcu() or
nfs_revalidate_inode() as appropriate before deciding to trust
execute_ok().

Reported-by: Donald Buczek <buczek@molgen.mpg.de>
Link: http://lkml.kernel.org/r/1451331530-3748-1-git-send-email-buczek@molgen.mpg.de
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>