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| author | Pavel Skripkin <paskripkin@gmail.com> | 2021-06-03 19:38:51 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-06-03 15:05:06 -0700 |
| commit | a2805dca5107d5603f4bbc027e81e20d93476e96 (patch) | |
| tree | 922655a2a8a02688d837e864ccef6506a2b24342 /net/caif/caif_dev.c | |
| parent | bce130e7f392ddde8cfcb09927808ebd5f9c8669 (diff) | |
| download | linux-a2805dca5107d5603f4bbc027e81e20d93476e96.tar.gz linux-a2805dca5107d5603f4bbc027e81e20d93476e96.tar.bz2 linux-a2805dca5107d5603f4bbc027e81e20d93476e96.zip | |
net: caif: add proper error handling
caif_enroll_dev() can fail in some cases. Ingnoring
these cases can lead to memory leak due to not assigning
link_support pointer to anywhere.
Fixes: 7c18d2205ea7 ("caif: Restructure how link caif link layer enroll")
Cc: stable@vger.kernel.org
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/caif/caif_dev.c')
| -rw-r--r-- | net/caif/caif_dev.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/net/caif/caif_dev.c b/net/caif/caif_dev.c index c10e5a55758d..fffbe41440b3 100644 --- a/net/caif/caif_dev.c +++ b/net/caif/caif_dev.c @@ -308,7 +308,7 @@ static void dev_flowctrl(struct net_device *dev, int on) caifd_put(caifd); } -void caif_enroll_dev(struct net_device *dev, struct caif_dev_common *caifdev, +int caif_enroll_dev(struct net_device *dev, struct caif_dev_common *caifdev, struct cflayer *link_support, int head_room, struct cflayer **layer, int (**rcv_func)(struct sk_buff *, struct net_device *, @@ -319,11 +319,12 @@ void caif_enroll_dev(struct net_device *dev, struct caif_dev_common *caifdev, enum cfcnfg_phy_preference pref; struct cfcnfg *cfg = get_cfcnfg(dev_net(dev)); struct caif_device_entry_list *caifdevs; + int res; caifdevs = caif_device_list(dev_net(dev)); caifd = caif_device_alloc(dev); if (!caifd) - return; + return -ENOMEM; *layer = &caifd->layer; spin_lock_init(&caifd->flow_lock); @@ -344,7 +345,7 @@ void caif_enroll_dev(struct net_device *dev, struct caif_dev_common *caifdev, strlcpy(caifd->layer.name, dev->name, sizeof(caifd->layer.name)); caifd->layer.transmit = transmit; - cfcnfg_add_phy_layer(cfg, + res = cfcnfg_add_phy_layer(cfg, dev, &caifd->layer, pref, @@ -354,6 +355,7 @@ void caif_enroll_dev(struct net_device *dev, struct caif_dev_common *caifdev, mutex_unlock(&caifdevs->lock); if (rcv_func) *rcv_func = receive; + return res; } EXPORT_SYMBOL(caif_enroll_dev); |