Merge tag 'integrity-v5.12-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity

Pull integrity fix from Mimi Zohar:
 "Just one patch to address a NULL ptr dereferencing when there is a
  mismatch between the user enabled LSMs and IMA/EVM"

* tag 'integrity-v5.12-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity:
  integrity: double check iint_cache was initialized
diff --git a/security/integrity/iint.c b/security/integrity/iint.c
index 1d20003..0ba0184 100644
--- a/security/integrity/iint.c
+++ b/security/integrity/iint.c
@@ -98,6 +98,14 @@
 	struct rb_node *node, *parent = NULL;
 	struct integrity_iint_cache *iint, *test_iint;
 
+	/*
+	 * The integrity's "iint_cache" is initialized at security_init(),
+	 * unless it is not included in the ordered list of LSMs enabled
+	 * on the boot command line.
+	 */
+	if (!iint_cache)
+		panic("%s: lsm=integrity required.\n", __func__);
+
 	iint = integrity_iint_find(inode);
 	if (iint)
 		return iint;