Patch "can: af_can: can_pernet_init(): add missing error handling for kzalloc returning NULL" has been added to the 4.13-stable tree

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

can: af_can: can_pernet_init(): add missing error handling for kzalloc returning NULL

to the 4.13-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:
can-af_can-can_pernet_init-add-missing-error-handling-for-kzalloc-returning-null.patch
and it can be found in the queue-4.13 subdirectory.

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

From: Marc Kleine-Budde <[email protected]>
Date: Sat, 29 Jul 2017 11:51:01 +0200
Subject: can: af_can: can_pernet_init(): add missing error handling for kzalloc returning NULL

From: Marc Kleine-Budde <[email protected]>

commit 5a606223c6b5b7560da253ed52e62c67fa18e29b upstream.

This patch adds the missing check and error handling for out-of-memory situations, when kzalloc cannot allocate memory.

---
 net/can/af_can.c |   14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

@@ -875,9 +875,14 @@ static int can_pernet_init(struct net *n
 	spin_lock_init(&net->can.can_rcvlists_lock);
 	net->can.can_rx_alldev_list =
 		kzalloc(sizeof(struct dev_rcv_lists), GFP_KERNEL);
-
+	if (!net->can.can_rx_alldev_list)
+		goto out;
 	net->can.can_stats = kzalloc(sizeof(struct s_stats), GFP_KERNEL);
+	if (!net->can.can_stats)
+		goto out_free_alldev_list;
 	net->can.can_pstats = kzalloc(sizeof(struct s_pstats), GFP_KERNEL);
+	if (!net->can.can_pstats)
+		goto out_free_can_stats;
 
 	if (IS_ENABLED(CONFIG_PROC_FS)) {
 		/* the statistics are updated every second (timer triggered) */

@@ -892,6 +897,13 @@ static int can_pernet_init(struct net *n
 	}
 
 	return 0;
+
+ out_free_can_stats:
+	kfree(net->can.can_stats);
+ out_free_alldev_list:
+	kfree(net->can.can_rx_alldev_list);
+ out:
+	return -ENOMEM;
 }
 
 static void can_pernet_exit(struct net *net)

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

queue-4.13/can-flexcan-rename-legacy-error-state-quirk.patch queue-4.13/can-af_can-can_pernet_init-add-missing-error-handling-for-kzalloc-returning-null.patch queue-4.13/can-flexcan-implement-error-passive-state-quirk.patch queue-4.13/can-flexcan-fix-i.mx28-state-transition-issue.patch queue-4.13/can-flexcan-fix-state-transition-regression.patch queue-4.13/can-flexcan-fix-i.mx6-state-transition-issue.patch queue-4.13/can-flexcan-fix-p1010-state-transition-issue.patch queue-4.13/can-esd_usb2-fix-can_dlc-value-for-received-rtr-frames.patch queue-4.13/can-gs_usb-fix-busy-loop-if-no-more-tx-context-is-available.patch