linux-next inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I82GAS CVE: NA
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This code doesn't check for lsdc_bo_create() failure and it could lead to a crash. It can fail for a variety of reasons, but the most common cause would be low memory. Add a check.
Fixes: f39db26c5428 ("drm: Add kms driver for loongson display controller") Signed-off-by: Dan Carpenter dan.carpenter@linaro.org Reviewed-by: Sui Jingfeng suijingfeng@loongson.cn Signed-off-by: Sui Jingfeng sui.jingfeng@linux.dev Link: https://patchwork.freedesktop.org/patch/msgid/ZLeijglIMPve2Iio@kadam Signed-off-by: Hongchen Zhang zhanghongchen@loongson.cn --- drivers/gpu/drm/loongson/lsdc_ttm.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/loongson/lsdc_ttm.c b/drivers/gpu/drm/loongson/lsdc_ttm.c index bb0c8fd43a75..bf79dc55afa4 100644 --- a/drivers/gpu/drm/loongson/lsdc_ttm.c +++ b/drivers/gpu/drm/loongson/lsdc_ttm.c @@ -496,6 +496,8 @@ struct lsdc_bo *lsdc_bo_create_kernel_pinned(struct drm_device *ddev, int ret;
lbo = lsdc_bo_create(ddev, domain, size, true, NULL, NULL); + if (IS_ERR(lbo)) + return ERR_CAST(lbo);
ret = lsdc_bo_reserve(lbo); if (unlikely(ret)) {