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[PATCH v2 2/4] contrib/vhost-user-gpu: avoid g_return_val_if() input val
From: |
Stefan Hajnoczi |
Subject: |
[PATCH v2 2/4] contrib/vhost-user-gpu: avoid g_return_val_if() input validation |
Date: |
Wed, 2 Dec 2020 15:26:09 +0000 |
Do not validate input with g_return_val_if(). This API is intended for
checking programming errors and is compiled out with -DG_DISABLE_CHECKS.
Use an explicit if statement for input validation so it cannot
accidentally be compiled out.
Suggested-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
contrib/vhost-user-gpu/vhost-user-gpu.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/contrib/vhost-user-gpu/vhost-user-gpu.c
b/contrib/vhost-user-gpu/vhost-user-gpu.c
index a019d0a9ac..534bad24d1 100644
--- a/contrib/vhost-user-gpu/vhost-user-gpu.c
+++ b/contrib/vhost-user-gpu/vhost-user-gpu.c
@@ -1044,7 +1044,11 @@ vg_get_config(VuDev *dev, uint8_t *config, uint32_t len)
{
VuGpu *g = container_of(dev, VuGpu, dev.parent);
- g_return_val_if_fail(len <= sizeof(struct virtio_gpu_config), -1);
+ if (len > sizeof(struct virtio_gpu_config)) {
+ g_critical("%s: len %u is larger than %zu",
+ __func__, len, sizeof(struct virtio_gpu_config));
+ return -1;
+ }
if (opt_virgl) {
g->virtio_config.num_capsets = vg_virgl_get_num_capsets();
--
2.28.0
[PATCH v2 3/4] contrib/vhost-user-input: avoid g_return_val_if() input validation, Stefan Hajnoczi, 2020/12/02
[PATCH v2 4/4] block/export: avoid g_return_val_if() input validation, Stefan Hajnoczi, 2020/12/02