selinux: return early for possible NULL audit buffers

[linux-2.6-microblaze.git] / security / selinux / ss / services.c

diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c
index d84c77f..e5f1b27 100644 (file)
--- a/security/selinux/ss/services.c
+++ b/security/selinux/ss/services.c
@@ -1673,6 +1673,8 @@ static int compute_sid_handle_invalid_context(
        if (context_struct_to_string(policydb, newcontext, &n, &nlen))
                goto out;
        ab = audit_log_start(audit_context(), GFP_ATOMIC, AUDIT_SELINUX_ERR);
+       if (!ab)
+               goto out;
        audit_log_format(ab,
                         "op=security_compute_sid invalid_context=");
        /* no need to record the NUL with untrusted strings */