apparmor: fixup secid map conversion to using IDR
The IDR conversion did not handle an error case for when allocating a
mapping fails, and it did not ensure that mappings did not allocate or
use a 0 value, which is used as an invalid secid. Which is used when a
mapping fails.
Fixes: 3ae7eb49a2be ("apparmor: Use an IDR to allocate apparmor secids")
Signed-off-by: John Johansen <john.johansen@canonical.com>
diff --git a/security/apparmor/label.c b/security/apparmor/label.c
index a17574d..ba11bdf 100644
--- a/security/apparmor/label.c
+++ b/security/apparmor/label.c
@@ -407,8 +407,7 @@ bool aa_label_init(struct aa_label *label, int size, gfp_t gfp)
AA_BUG(!label);
AA_BUG(size < 1);
- label->secid = aa_alloc_secid(label, gfp);
- if (label->secid == AA_SECID_INVALID)
+ if (aa_alloc_secid(label, gfp) < 0)
return false;
label->size = size; /* doesn't include null */