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nfsd4: fix corruption on setting an ACL. 

As of 06f9cc12ca "nfsd4: don't create
unnecessary mask acl", any non-trivial ACL will be left with an
unitialized entry, and a trivial ACL may write one entry beyond what's
allocated.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
J. Bruce Fields 2014-05-14 21:57:26 -04:00
parent aa07c713ec
commit 5513a510fa
1 changed files with 1 additions and 1 deletions
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2
fs/nfsd/nfs4acl.c
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@ -590,7 +590,7 @@ posix_state_to_acl(struct posix_acl_state *state, unsigned int flags)
add_to_mask(state, &state->groups->aces[i].perms);
}
if (!state->users->n && !state->groups->n) {
if (state->users->n || state->groups->n) {
pace++;
pace->e_tag = ACL_MASK;
low_mode_from_nfs4(state->mask.allow, &pace->e_perm, flags);