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| author |   Marc Kleine-Budde <mkl@pengutronix.de> | 2017-07-29 11:51:01 +0200 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2017-10-19 13:05:54 +0200 |
| commit | 5a606223c6b5b7560da253ed52e62c67fa18e29b (patch) | |
| tree | 098958487eea2734994cbb5131508fa575c8d20e /net/can | |
| parent | can: af_can: do not access proto_tab directly use rcu_access_pointer instead (diff) | |
| download | linux-dev-5a606223c6b5b7560da253ed52e62c67fa18e29b.tar.xz linux-dev-5a606223c6b5b7560da253ed52e62c67fa18e29b.zip | |
can: af_can: can_pernet_init(): add missing error handling for kzalloc returning NULL
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@hartkopp.net>
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'net/can')
| -rw-r--r-- | net/can/af_can.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/net/can/af_can.c b/net/can/af_can.c index eb1ad74b40f4..ecd5c703d11e 100644 --- a/net/can/af_can.c +++ b/net/can/af_can.c @@ -875,9 +875,14 @@ static int can_pernet_init(struct net *net) 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 *net) } 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) |