From: "J. Bruce Fields" <bfields@xxxxxxxxxx>
As of 06f9cc12caa862f5bc86ebdb4f77568a4bef0167 "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@xxxxxxxxxx>
---
fs/nfsd/nfs4acl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
I'll submit this for 3.15.
diff --git a/fs/nfsd/nfs4acl.c b/fs/nfsd/nfs4acl.c
index c06cad5e..f69f56b 100644
--- a/fs/nfsd/nfs4acl.c
+++ b/fs/nfsd/nfs4acl.c
@@ -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);
--
1.9.0
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