From: Zhu Yanjun <yanjun.zhu@xxxxxxxxx>
[ Upstream commit e3fe8d28c67bf6c291e920c6d04fa22afa14e6e4 ]
Fix the warnings when building virtio_net driver.
"
drivers/net/virtio_net.c: In function ‘init_vqs’:
drivers/net/virtio_net.c:4551:48: warning: ‘%d’ directive writing between 1 and 11 bytes into a region of size 10 [-Wformat-overflow=]
4551 | sprintf(vi->rq[i].name, "input.%d", i);
| ^~
In function ‘virtnet_find_vqs’,
inlined from ‘init_vqs’ at drivers/net/virtio_net.c:4645:8:
drivers/net/virtio_net.c:4551:41: note: directive argument in the range [-2147483643, 65534]
4551 | sprintf(vi->rq[i].name, "input.%d", i);
| ^~~~~~~~~~
drivers/net/virtio_net.c:4551:17: note: ‘sprintf’ output between 8 and 18 bytes into a destination of size 16
4551 | sprintf(vi->rq[i].name, "input.%d", i);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/virtio_net.c: In function ‘init_vqs’:
drivers/net/virtio_net.c:4552:49: warning: ‘%d’ directive writing between 1 and 11 bytes into a region of size 9 [-Wformat-overflow=]
4552 | sprintf(vi->sq[i].name, "output.%d", i);
| ^~
In function ‘virtnet_find_vqs’,
inlined from ‘init_vqs’ at drivers/net/virtio_net.c:4645:8:
drivers/net/virtio_net.c:4552:41: note: directive argument in the range [-2147483643, 65534]
4552 | sprintf(vi->sq[i].name, "output.%d", i);
| ^~~~~~~~~~~
drivers/net/virtio_net.c:4552:17: note: ‘sprintf’ output between 9 and 19 bytes into a destination of size 16
4552 | sprintf(vi->sq[i].name, "output.%d", i);
"
Reviewed-by: Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx>
Signed-off-by: Zhu Yanjun <yanjun.zhu@xxxxxxxxx>
Link: https://lore.kernel.org/r/20240104020902.2753599-1-yanjun.zhu@xxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/virtio_net.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 2fd5d2b7a209..4029c56dfcf0 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -2819,10 +2819,11 @@ static int virtnet_find_vqs(struct virtnet_info *vi)
{
vq_callback_t **callbacks;
struct virtqueue **vqs;
- int ret = -ENOMEM;
- int i, total_vqs;
const char **names;
+ int ret = -ENOMEM;
+ int total_vqs;
bool *ctx;
+ u16 i;
/* We expect 1 RX virtqueue followed by 1 TX virtqueue, followed by
* possible N-1 RX/TX queue pairs used in multiqueue mode, followed by
@@ -2859,8 +2860,8 @@ static int virtnet_find_vqs(struct virtnet_info *vi)
for (i = 0; i < vi->max_queue_pairs; i++) {
callbacks[rxq2vq(i)] = skb_recv_done;
callbacks[txq2vq(i)] = skb_xmit_done;
- sprintf(vi->rq[i].name, "input.%d", i);
- sprintf(vi->sq[i].name, "output.%d", i);
+ sprintf(vi->rq[i].name, "input.%u", i);
+ sprintf(vi->sq[i].name, "output.%u", i);
names[rxq2vq(i)] = vi->rq[i].name;
names[txq2vq(i)] = vi->sq[i].name;
if (ctx)
--
2.43.0
