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drm/nouveau/nouveau_bo: fix potential memory leak in nouveau_bo_alloc()

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nouveau_bo_alloc() allocates a memory chunk for "nvbo" with kzalloc().
When some error occurs, "nvbo" should be released. But when
WARN_ON(pi < 0)) equals true, the function return ERR_PTR without
releasing the "nvbo", which will lead to a memory leak.

We should release the "nvbo" with kfree() if WARN_ON(pi < 0)) equals true.

Signed-off-by: Jianglei Nie <niejianglei2021@163.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220705094306.2244103-1-niejianglei2021@163.com
This commit is contained in:
Jianglei Nie 2022-07-05 17:43:06 +08:00 committed by Lyude Paul
parent 540dfd188e
commit 6dc548745d
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/nouveau/nouveau_bo.c
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@ -281,8 +281,10 @@ nouveau_bo_alloc(struct nouveau_cli *cli, u64 *size, int *align, u32 domain,
break;
}
if (WARN_ON(pi < 0))
if (WARN_ON(pi < 0)) {
kfree(nvbo);
return ERR_PTR(-EINVAL);
}
/* Disable compression if suitable settings couldn't be found. */
if (nvbo->comp && !vmm->page[pi].comp) {