From: Wang Hai wanghai38@huawei.com
[ Upstream commit 52755b66ddcef2e897778fac5656df18817b59ab ]
If memory allocation for 'kbuf' succeed, cosa_write() doesn't have a corresponding kfree() in exception handling. Thus add kfree() for this function implementation.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Reported-by: Hulk Robot hulkci@huawei.com Signed-off-by: Wang Hai wanghai38@huawei.com Acked-by: Jan "Yenya" Kasprzak kas@fi.muni.cz Link: https://lore.kernel.org/r/20201110144614.43194-1-wanghai38@huawei.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wan/cosa.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/net/wan/cosa.c b/drivers/net/wan/cosa.c index b87fe0a01c69f..3c02473a20f21 100644 --- a/drivers/net/wan/cosa.c +++ b/drivers/net/wan/cosa.c @@ -903,6 +903,7 @@ static ssize_t cosa_write(struct file *file, chan->tx_status = 1; spin_unlock_irqrestore(&cosa->lock, flags); up(&chan->wsem); + kfree(kbuf); return -ERESTARTSYS; } }