[PATCH 4.4 015/135] yam: fix possible memory leak in yam_init_driver

From: Sasha Levin
Date: Mon Jun 29 2020 - 15:13:02 EST


From: Wang Hai <wanghai38@xxxxxxxxxx>

[ Upstream commit 98749b7188affbf2900c2aab704a8853901d1139 ]

If register_netdev(dev) fails, free_netdev(dev) needs
to be called, otherwise a memory leak will occur.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Wang Hai <wanghai38@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/hamradio/yam.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/net/hamradio/yam.c b/drivers/net/hamradio/yam.c
index 1a4729c36aa49..623e4225e7c84 100644
--- a/drivers/net/hamradio/yam.c
+++ b/drivers/net/hamradio/yam.c
@@ -1160,6 +1160,7 @@ static int __init yam_init_driver(void)
err = register_netdev(dev);
if (err) {
printk(KERN_WARNING "yam: cannot register net device %s\n", dev->name);
+ free_netdev(dev);
goto error;
}
yam_devs[i] = dev;
--
2.25.1