4.13-stable review patch. If anyone has any objections, please let me know.
------------------
From: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
commit 5a606223c6b5b7560da253ed52e62c67fa18e29b upstream.
This patch adds the missing check and error handling for out-of-memory
situations, when kzalloc cannot allocate memory.
Fixes: cb5635a36776 ("can: complete initial namespace support")
Acked-by: Oliver Hartkopp <socketcan@xxxxxxxxxxxx>
Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/can/af_can.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
--- a/net/can/af_can.c
+++ b/net/can/af_can.c
@@ -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)