Thread (3 messages) read the whole thread 3 messages, 3 authors, 2021-09-07
STALE1787d LANDED

Landed in mainline as be9c6bad9b46 on 2021-09-14.

[PATCH] vdpa: potential uninitialized return in vhost_vdpa_va_map()

From: Dan Carpenter <hidden>
Date: 2021-09-07 07:33:16
Also in: kernel-janitors
Subsystem: the rest, virtio host (vhost) · Maintainers: Linus Torvalds, "Michael S. Tsirkin", Jason Wang

The concern here is that "ret" can be uninitialized if we hit the
"goto next" condition on every iteration through the loop.

Fixes: 41ba1b5f9d4b ("vdpa: Support transferring virtual addressing during DMA mapping")
Signed-off-by: Dan Carpenter <redacted>
---
 drivers/vhost/vdpa.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c
index d0c0fedf2c09..170166806714 100644
--- a/drivers/vhost/vdpa.c
+++ b/drivers/vhost/vdpa.c
@@ -640,7 +640,7 @@ static int vhost_vdpa_va_map(struct vhost_vdpa *v,
 	u64 offset, map_size, map_iova = iova;
 	struct vdpa_map_file *map_file;
 	struct vm_area_struct *vma;
-	int ret;
+	int ret = 0;
 
 	mmap_read_lock(dev->mm);
 
-- 
2.20.1

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