From: Jianglei Nie niejianglei2021@163.com
stable inclusion from stable-v5.10.150 commit 3339a51bcd89fce33011abf226b17c1c522b5e24 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I6D0XA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 6dc548745d5b5102e3c53dc5097296ac270b6c69 ]
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-nieji... Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Jialin Zhang zhangjialin11@huawei.com --- drivers/gpu/drm/nouveau/nouveau_bo.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c index b4946b595d86..b57dcad8865f 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.c +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c @@ -279,8 +279,10 @@ 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) {