nouveau/svm: Replace one-element array with flexible-array member in struct nouveau_svm

One-element and zero-length arrays are deprecated. So, replace
one-element array in struct nouveau_svm with flexible-array member.

This results in no differences in binary output.

Link: https://github.com/KSPP/linux/issues/338
Signed-off-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/087a1c335228bd245192bbb2fb347c9af1be5750.1692208802.git.gustavoars@kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>

diff --git a/drivers/gpu/drm/nouveau/nouveau_svm.c b/drivers/gpu/drm/nouveau/nouveau_svm.c
index 186351ecf72fd7e28b451203d0ae0e9d66842e93..00444ad82d18388dc060d39448d5a8166a6ee14d 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_svm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_svm.c
@@ -67,7 +67,7 @@ struct nouveau_svm {
                        struct nouveau_svmm *svmm;
                } **fault;
                int fault_nr;
-       } buffer[1];
+       } buffer[];
 };
 
 #define FAULT_ACCESS_READ 0
@@ -1063,7 +1063,7 @@ nouveau_svm_init(struct nouveau_drm *drm)
        if (drm->client.device.info.family > NV_DEVICE_INFO_V0_PASCAL)
                return;
 
-       if (!(drm->svm = svm = kzalloc(sizeof(*drm->svm), GFP_KERNEL)))
+       if (!(drm->svm = svm = kzalloc(struct_size(drm->svm, buffer, 1), GFP_KERNEL)))
                return;
 
        drm->svm->drm = drm;