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Subject: media: venus: vdec: fixed possible memory leak issue Author: Ameer Hamza amhamza.mgc@gmail.com Date: Mon Dec 6 11:43:15 2021 +0100

The venus_helper_alloc_dpb_bufs() implementation allows an early return on an error path when checking the id from ida_alloc_min() which would not release the earlier buffer allocation.

Move the direct kfree() from the error checking of dma_alloc_attrs() to the common fail path to ensure that allocations are released on all error paths in this function.

Addresses-Coverity: 1494120 ("Resource leak")

cc: stable@vger.kernel.org # 5.16+ Fixes: 40d87aafee29 ("media: venus: vdec: decoded picture buffer handling during reconfig sequence") Signed-off-by: Ameer Hamza amhamza.mgc@gmail.com Reviewed-by: Kieran Bingham kieran.bingham+renesas@ideasonboard.com Signed-off-by: Stanimir Varbanov stanimir.varbanov@linaro.org Signed-off-by: Mauro Carvalho Chehab mchehab@kernel.org

drivers/media/platform/qcom/venus/helpers.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

---

diff --git a/drivers/media/platform/qcom/venus/helpers.c b/drivers/media/platform/qcom/venus/helpers.c index 84c3a511ec31..0bca95d01650 100644 --- a/drivers/media/platform/qcom/venus/helpers.c +++ b/drivers/media/platform/qcom/venus/helpers.c @@ -189,7 +189,6 @@ int venus_helper_alloc_dpb_bufs(struct venus_inst *inst) buf->va = dma_alloc_attrs(dev, buf->size, &buf->da, GFP_KERNEL, buf->attrs); if (!buf->va) { - kfree(buf); ret = -ENOMEM; goto fail; } @@ -209,6 +208,7 @@ int venus_helper_alloc_dpb_bufs(struct venus_inst *inst) return 0;

fail: + kfree(buf); venus_helper_free_dpb_bufs(inst); return ret; }