From 81ee17aa461d1bf05a45dddd7f9abfa9ab0b2036 Mon Sep 17 00:00:00 2001 From: Alex Chen Date: Wed, 25 Nov 2020 01:30:55 +0000 Subject: [PATCH] vhost-user-scsi: Fix memleaks in vus_proc_req() The 'elem' is allocated memory in vu_queue_pop(), and its memory should be freed in all error branches after vu_queue_pop(). In addition, in order to free the 'elem' memory outside of while(1) loop, move the definition of 'elem' to the beginning of vus_proc_req(). Reported-by: Euler Robot Signed-off-by: Alex Chen Reviewed-by: Raphael Norwitz Message-Id: <20201125013055.34147-1-alex.chen@huawei.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- contrib/vhost-user-scsi/vhost-user-scsi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/contrib/vhost-user-scsi/vhost-user-scsi.c b/contrib/vhost-user-scsi/vhost-user-scsi.c index 0f9ba4b2a2..4639440a70 100644 --- a/contrib/vhost-user-scsi/vhost-user-scsi.c +++ b/contrib/vhost-user-scsi/vhost-user-scsi.c @@ -232,6 +232,7 @@ static void vus_proc_req(VuDev *vu_dev, int idx) VugDev *gdev; VusDev *vdev_scsi; VuVirtq *vq; + VuVirtqElement *elem = NULL; assert(vu_dev); @@ -248,7 +249,6 @@ static void vus_proc_req(VuDev *vu_dev, int idx) g_debug("Got kicked on vq[%d]@%p", idx, vq); while (1) { - VuVirtqElement *elem; VirtIOSCSICmdReq *req; VirtIOSCSICmdResp *rsp; @@ -288,6 +288,7 @@ static void vus_proc_req(VuDev *vu_dev, int idx) free(elem); } + free(elem); } static void vus_queue_set_started(VuDev *vu_dev, int idx, bool started)