NFS: Ensure we revalidate attributes before using execute_ok()

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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>

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Trond Myklebust 2015-12-28 19:30:05 -05:00

parent 494f74a26c

commit 5c5fc09a11

1 changed files with 16 additions and 2 deletions

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fs/nfs/dir.c

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