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Commit 3ecb681c authored by Colin Ian King's avatar Colin Ian King Committed by Greg Kroah-Hartman
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xen/pvcalls: fix null pointer dereference on map->sock 



[ Upstream commit 68d2059be660944152ba667e43c3b4ec225974bc ]

Currently if map is null then a potential null pointer deference
occurs when calling sock_release on map->sock.  I believe the
actual intention was to call sock_release on sock instead. Fix
this.

Fixes: 5db4d286 ("xen/pvcalls: implement connect command")
Signed-off-by: default avatarColin Ian King <colin.king@canonical.com>
Reviewed-by: default avatarJuergen Gross <jgross@suse.com>
Signed-off-by: default avatarJuergen Gross <jgross@suse.com>
Signed-off-by: default avatarSasha Levin <alexander.levin@microsoft.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 6c88c938

drivers/xen/pvcalls-back.c

+1 −1
Original line number Diff line number Diff line
@@ -424,7 +424,7 @@ static int pvcalls_back_connect(struct xenbus_device *dev, 
					sock);

	if (!map) {

		ret = -EFAULT;

		sock_release(map->sock);

		sock_release(sock);

	}



out: