The function nfc_genl_llc_sdreq() can dereference the dev pointer while
it is NULL on its error path. Create a new error handling label to avoid
that.
This fixes the following coccinelle error:
./net/nfc/netlink.c:1175:21-24: ERROR: dev is NULL but dereferenced.
Signed-off-by: Vincent Stehlé <vincent.stehle@xxxxxxxxxxx>
Cc: Thierry Escande <thierry.escande@xxxxxxxxxxxxxxx>
Cc: Samuel Ortiz <sameo@xxxxxxxxxxxxxxx>
---
net/nfc/netlink.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c
index 853172c..51c48f0 100644
--- a/net/nfc/netlink.c
+++ b/net/nfc/netlink.c
@@ -1111,7 +1111,7 @@ static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info)
dev = nfc_get_device(idx);
if (!dev) {
rc = -ENODEV;
- goto exit;
+ goto exit_nodev;
}
device_lock(&dev->dev);
@@ -1176,6 +1176,7 @@ exit:
nfc_put_device(dev);
+exit_nodev:
return rc;
}
--
2.5.1
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