linux-kernel - [PATCH 3.12 27/82] vhost: actually track log eventfd file

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Date:	Mon, 24 Aug 2015 11:08:47 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org,
	Marc-André Lureau <marcandre.lureau@...hat.com>,
	"Michael S. Tsirkin" <mst@...hat.com>, Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 3.12 27/82] vhost: actually track log eventfd file

From: Marc-André Lureau <marcandre.lureau@...hat.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 7932c0bd7740f4cd2aa168d3ce0199e7af7d72d5 upstream.

While reviewing vhost log code, I found out that log_file is never
set. Note: I haven't tested the change (QEMU doesn't use LOG_FD yet).

Signed-off-by: Marc-André Lureau <marcandre.lureau@...hat.com>
Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 drivers/vhost/vhost.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 69068e0d8f31..384bcc8ed7ad 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -878,6 +878,7 @@ long vhost_dev_ioctl(struct vhost_dev *d, unsigned int ioctl, void __user *argp)
 		}
 		if (eventfp != d->log_file) {
 			filep = d->log_file;
+			d->log_file = eventfp;
 			ctx = d->log_ctx;
 			d->log_ctx = eventfp ?
 				eventfd_ctx_fileget(eventfp) : NULL;
-- 
2.5.0

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