[PATCH] drm/nouveau: Add a jump label in nouveau_gem_ioctl_pushbuf()

[Markus Elfring]

Date: Wed, 5 Apr 2023 18:38:54 +0200

The label “out_prevalid” was used to jump to another pointer check
despite of the detail in the implementation of the function
“nouveau_gem_ioctl_pushbuf” that it was determined already in one case
that the corresponding variable contained an error pointer
because of a failed call of the function “u_memcpya”.

Thus use an additional label.

This issue was detected by using the Coccinelle software.

Fixes: 2be65641642ef423f82162c3a5f28c754d1637d2 ("drm/nouveau: fix relocations applying logic and a double-free")
Signed-off-by: Markus Elfring <elfring at users.sourceforge.net>
---
 drivers/gpu/drm/nouveau/nouveau_gem.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c
index f77e44958037..d87e1cb2c933 100644
--- a/drivers/gpu/drm/nouveau/nouveau_gem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_gem.c
@@ -814,7 +814,7 @@ nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 			reloc = u_memcpya(req->relocs, req->nr_relocs, sizeof(*reloc));
 			if (IS_ERR(reloc)) {
 				ret = PTR_ERR(reloc);
-				goto out_prevalid;
+				goto out_free_bo;
 			}

 			goto revalidate;
@@ -929,6 +929,7 @@ nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 out_prevalid:
 	if (!IS_ERR(reloc))
 		u_free(reloc);
+out_free_bo:
 	u_free(bo);
 	u_free(push);

--
2.40.0