* [PATCH] dmaengine: ti: k3-udma: Fix a resource leak in an error handling path
@ 2021-01-24 7:09 Christophe JAILLET
2021-01-25 11:13 ` Péter Ujfalusi
2021-01-26 17:32 ` Vinod Koul
0 siblings, 2 replies; 3+ messages in thread
From: Christophe JAILLET @ 2021-01-24 7:09 UTC (permalink / raw)
To: peter.ujfalusi, dan.j.williams, vkoul
Cc: dmaengine, linux-kernel, kernel-janitors, Christophe JAILLET
In 'dma_pool_create()', we return -ENOMEM, but don't release the resources
already allocated, as in all the other error handling paths.
Go to 'err_res_free' instead of returning directly.
Fixes: 017794739702 ("dmaengine: ti: k3-udma: Initial support for K3 BCDMA")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
This patch is not even compile tested.
I don't have the needed configuration.
---
drivers/dma/ti/k3-udma.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c
index 8e3fd1119a77..96ad21869ba7 100644
--- a/drivers/dma/ti/k3-udma.c
+++ b/drivers/dma/ti/k3-udma.c
@@ -2447,7 +2447,8 @@ static int bcdma_alloc_chan_resources(struct dma_chan *chan)
dev_err(ud->ddev.dev,
"Descriptor pool allocation failed\n");
uc->use_dma_pool = false;
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto err_res_free;
}
uc->use_dma_pool = true;
--
2.27.0
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH] dmaengine: ti: k3-udma: Fix a resource leak in an error handling path
2021-01-24 7:09 [PATCH] dmaengine: ti: k3-udma: Fix a resource leak in an error handling path Christophe JAILLET
@ 2021-01-25 11:13 ` Péter Ujfalusi
2021-01-26 17:32 ` Vinod Koul
1 sibling, 0 replies; 3+ messages in thread
From: Péter Ujfalusi @ 2021-01-25 11:13 UTC (permalink / raw)
To: Christophe JAILLET, dan.j.williams, vkoul
Cc: dmaengine, linux-kernel, kernel-janitors
Hi,
On 1/24/21 9:09 AM, Christophe JAILLET wrote:
> In 'dma_pool_create()', we return -ENOMEM, but don't release the resources
> already allocated, as in all the other error handling paths.
>
> Go to 'err_res_free' instead of returning directly.
Interesting that I only had error for the bcdma path...
> Fixes: 017794739702 ("dmaengine: ti: k3-udma: Initial support for K3 BCDMA")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
> ---
> This patch is not even compile tested.
> I don't have the needed configuration.
No issue, that patch is trivial,
Acked-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>
> ---
> drivers/dma/ti/k3-udma.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c
> index 8e3fd1119a77..96ad21869ba7 100644
> --- a/drivers/dma/ti/k3-udma.c
> +++ b/drivers/dma/ti/k3-udma.c
> @@ -2447,7 +2447,8 @@ static int bcdma_alloc_chan_resources(struct dma_chan *chan)
> dev_err(ud->ddev.dev,
> "Descriptor pool allocation failed\n");
> uc->use_dma_pool = false;
> - return -ENOMEM;
> + ret = -ENOMEM;
> + goto err_res_free;
> }
>
> uc->use_dma_pool = true;
>
--
Péter
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] dmaengine: ti: k3-udma: Fix a resource leak in an error handling path
2021-01-24 7:09 [PATCH] dmaengine: ti: k3-udma: Fix a resource leak in an error handling path Christophe JAILLET
2021-01-25 11:13 ` Péter Ujfalusi
@ 2021-01-26 17:32 ` Vinod Koul
1 sibling, 0 replies; 3+ messages in thread
From: Vinod Koul @ 2021-01-26 17:32 UTC (permalink / raw)
To: Christophe JAILLET
Cc: peter.ujfalusi, dan.j.williams, dmaengine, linux-kernel,
kernel-janitors
On 24-01-21, 08:09, Christophe JAILLET wrote:
> In 'dma_pool_create()', we return -ENOMEM, but don't release the resources
> already allocated, as in all the other error handling paths.
>
> Go to 'err_res_free' instead of returning directly.
Applied, thanks
--
~Vinod
^ permalink raw reply [flat|nested] 3+ messages in thread
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2021-01-24 7:09 [PATCH] dmaengine: ti: k3-udma: Fix a resource leak in an error handling path Christophe JAILLET
2021-01-25 11:13 ` Péter Ujfalusi
2021-01-26 17:32 ` Vinod Koul
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