Patch "crypto: caam - fix caam_jr_alloc() ret code" has been added to the 4.4-stable tree

This is a note to let you know that I've just added the patch titled

crypto: caam - fix caam_jr_alloc() ret code

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
crypto-caam-fix-caam_jr_alloc-ret-code.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Catalin Vasile <[email protected]>
Date: Fri, 6 May 2016 16:18:53 +0300
Subject: crypto: caam - fix caam_jr_alloc() ret code

From: Catalin Vasile <[email protected]>

commit e930c765ca5c6b039cd22ebfb4504ea7b5dab43d upstream.

caam_jr_alloc() used to return NULL if a JR device could not be allocated for a session. In turn, every user of this function used IS_ERR() function to verify if anything went wrong, which does NOT look for NULL values. This made the kernel crash if the sanity check failed, because the driver continued to think it had allocated a valid JR dev instance to the session and at some point it tries to do a caam_jr_free() on a NULL JR dev pointer.
This patch is a fix for this issue.

---
 drivers/crypto/caam/jr.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -248,7 +248,7 @@ static void caam_jr_dequeue(unsigned lon
 struct device *caam_jr_alloc(void)
 {
 	struct caam_drv_private_jr *jrpriv, *min_jrpriv = NULL;
-	struct device *dev = NULL;
+	struct device *dev = ERR_PTR(-ENODEV);
 	int min_tfm_cnt	= INT_MAX;
 	int tfm_cnt;
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/crypto-caam-fix-caam_jr_alloc-ret-code.patch