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nfsd: fix NULL dereference in setattr() 

The original code would oops if this were called from nfsd4_setattr()
because "filpp" is NULL.

(Note this case is currently impossible, as long as we only give out
read delegations.)

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Dan Carpenter 2010-10-27 23:19:04 +02:00 committed by J. Bruce Fields
parent e53beacd23
commit 43b0178eda
1 changed files with 3 additions and 2 deletions
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5
fs/nfsd/nfs4state.c
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@ -3081,9 +3081,10 @@ nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate,
if (status)
goto out;
renew_client(dp->dl_client);
if (filpp)
if (filpp) {
*filpp = find_readable_file(dp->dl_file);
BUG_ON(!*filpp);
BUG_ON(!*filpp);
}
} else { /* open or lock stateid */
stp = find_stateid(stateid, flags);
if (!stp)