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Message-ID: <20240927155330.450702-1-alessandro.zanni87@gmail.com>
Date: Fri, 27 Sep 2024 17:53:27 +0200
From: Alessandro Zanni <alessandro.zanni87@...il.com>
To: mst@...hat.com,
jasowang@...hat.com,
xuanzhuo@...ux.alibaba.com,
eperezma@...hat.com
Cc: Alessandro Zanni <alessandro.zanni87@...il.com>,
virtualization@...ts.linux.dev,
linux-kernel@...r.kernel.org,
skhan@...uxfoundation.org,
anupnewsmail@...il.com
Subject: [PATCH] virtio: Fixes errors: uninitialized symbol
This fix solves multiple Smatch static checker uninitialized errors:
drivers/virtio/virtio_ring.c:1516 virtqueue_add_packed()
error: uninitialized symbol 'prev'.
drivers/virtio/virtio_ring.c:1524 virtqueue_add_packed()
error: uninitialized symbol 'head_flags'.
drivers/virtio/virtio_ring.c:645 virtqueue_add_split()
error: uninitialized symbol 'prev'.
Signed-off-by: Alessandro Zanni <alessandro.zanni87@...il.com>
---
drivers/virtio/virtio_ring.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index be7309b1e860..001ea503d52c 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -553,7 +553,7 @@ static inline int virtqueue_add_split(struct virtqueue *_vq,
struct vring_virtqueue *vq = to_vvq(_vq);
struct scatterlist *sg;
struct vring_desc *desc;
- unsigned int i, n, avail, descs_used, prev, err_idx;
+ unsigned int i, n, avail, descs_used, prev = 0, err_idx;
int head;
bool indirect;
@@ -1411,8 +1411,8 @@ static inline int virtqueue_add_packed(struct virtqueue *_vq,
struct vring_packed_desc *desc;
struct scatterlist *sg;
unsigned int i, n, c, descs_used, err_idx;
- __le16 head_flags, flags;
- u16 head, id, prev, curr, avail_used_flags;
+ __le16 head_flags = 0, flags;
+ u16 head, id, prev = 0, curr, avail_used_flags;
int err;
START_USE(vq);
--
2.43.0
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