From 1f75338b6fece2bbd42ac3623830c65e2df6e031 Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Mon, 14 Dec 2015 19:01:53 -0800 Subject: [PATCH] Drivers: hv: utils: fix memory leak on on_msg() failure inmsg should be freed in case of on_msg() failure to avoid memory leak. Preserve the error code from on_msg(). Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- drivers/hv/hv_utils_transport.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/hv/hv_utils_transport.c b/drivers/hv/hv_utils_transport.c index 24b2766a6d34..40abe44fcd98 100644 --- a/drivers/hv/hv_utils_transport.c +++ b/drivers/hv/hv_utils_transport.c @@ -77,6 +77,7 @@ static ssize_t hvt_op_write(struct file *file, const char __user *buf, { struct hvutil_transport *hvt; u8 *inmsg; + int ret; hvt = container_of(file->f_op, struct hvutil_transport, fops); @@ -84,11 +85,11 @@ static ssize_t hvt_op_write(struct file *file, const char __user *buf, if (IS_ERR(inmsg)) return PTR_ERR(inmsg); - if (hvt->on_msg(inmsg, count)) - return -EFAULT; + ret = hvt->on_msg(inmsg, count); + kfree(inmsg); - return count; + return ret ? ret : count; } static unsigned int hvt_op_poll(struct file *file, poll_table *wait) -- 2.20.1