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Drivers: hv: utils: fix memory leak on on_msg() failure

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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 <vkuznets@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Vitaly Kuznetsov 2015-12-14 19:01:53 -08:00 committed by Greg Kroah-Hartman
parent a689d2510f
commit 1f75338b6f
1 changed files with 4 additions and 3 deletions
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7
drivers/hv/hv_utils_transport.c
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@ -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)