This is a note to let you know that I've just added the patch titled
bus: arm-ccn: Check memory allocation failure
to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: bus-arm-ccn-check-memory-allocation-failure.patch and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From 24771179c5c138f0ea3ef88b7972979f62f2d5db Mon Sep 17 00:00:00 2001
From: Christophe JAILLET christophe.jaillet@wanadoo.fr Date: Sun, 27 Aug 2017 11:06:50 +0100 Subject: bus: arm-ccn: Check memory allocation failure
From: Christophe JAILLET christophe.jaillet@wanadoo.fr
commit 24771179c5c138f0ea3ef88b7972979f62f2d5db upstream.
Check memory allocation failures and return -ENOMEM in such cases
This avoids a potential NULL pointer dereference.
Signed-off-by: Christophe JAILLET christophe.jaillet@wanadoo.fr Acked-by: Scott Branden scott.branden@broadcom.com Signed-off-by: Pawel Moll pawel.moll@arm.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/bus/arm-ccn.c | 5 +++++ 1 file changed, 5 insertions(+)
--- a/drivers/bus/arm-ccn.c +++ b/drivers/bus/arm-ccn.c @@ -1271,6 +1271,10 @@ static int arm_ccn_pmu_init(struct arm_c int len = snprintf(NULL, 0, "ccn_%d", ccn->dt.id);
name = devm_kzalloc(ccn->dev, len + 1, GFP_KERNEL); + if (!name) { + err = -ENOMEM; + goto error_choose_name; + } snprintf(name, len + 1, "ccn_%d", ccn->dt.id); }
@@ -1318,6 +1322,7 @@ static int arm_ccn_pmu_init(struct arm_c
error_pmu_register: error_set_affinity: +error_choose_name: ida_simple_remove(&arm_ccn_pmu_ida, ccn->dt.id); for (i = 0; i < ccn->num_xps; i++) writel(0, ccn->xp[i].base + CCN_XP_DT_CONTROL);
Patches currently in stable-queue which might be from christophe.jaillet@wanadoo.fr are
queue-4.9/bus-arm-ccn-check-memory-allocation-failure.patch