From: Catalin Vasile Date: Fri, 6 May 2016 13:18:53 +0000 (+0300) Subject: crypto: caam - fix caam_jr_alloc() ret code X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=e930c765ca5c6b039cd22ebfb4504ea7b5dab43d;p=linux-beck.git crypto: caam - fix caam_jr_alloc() ret code 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. Cc: Signed-off-by: Catalin Vasile Signed-off-by: Herbert Xu --- diff --git a/drivers/crypto/caam/jr.c b/drivers/crypto/caam/jr.c index 6fd63a600614..5ef4be22eb80 100644 --- a/drivers/crypto/caam/jr.c +++ b/drivers/crypto/caam/jr.c @@ -248,7 +248,7 @@ static void caam_jr_dequeue(unsigned long devarg) 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;