linux-kernel - Re: [PATCH] dmaengine: xilinx: xdma: Fix IS_ERR() vs NULL bug in xdma

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <040d0e91-1bed-308a-a0fa-96ce4aed7a30@amd.com>
Date: Mon, 19 Aug 2024 13:11:34 -0700
From: Lizhi Hou <lizhi.hou@....com>
To: Harshit Mogalapalli <harshit.m.mogalapalli@...cle.com>, Brian Xu
	<brian.xu@....com>, Raj Kumar Rampelli <raj.kumar.rampelli@....com>, "Vinod
 Koul" <vkoul@...nel.org>, Michal Simek <michal.simek@....com>, Sonal Santan
	<sonal.santan@....com>, Max Zhen <max.zhen@....com>,
	<dmaengine@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, Vinod Koul <vkoul@...nel.org>
CC: <dan.carpenter@...aro.org>, <kernel-janitors@...r.kernel.org>,
	<error27@...il.com>
Subject: Re: [PATCH] dmaengine: xilinx: xdma: Fix IS_ERR() vs NULL bug in
 xdma_probe()


It looks a dup of

https://lore.kernel.org/dmaengine/CALYqZ9=pVRtSY=w4hG0R3HEM_Y=bpLba2_jRcvcZX4eLX5Yw-A@mail.gmail.com/


Thanks,

Lizhi

On 8/19/24 12:36, Harshit Mogalapalli wrote:
> devm_regmap_init_mmio() returns error pointers on error, it doesn't
> return NULL. Update the error check.
>
> Fixes: 17ce252266c7 ("dmaengine: xilinx: xdma: Add xilinx xdma driver")
> Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@...cle.com>
> ---
> This is based on static analysis with smatch, only compile tested.
> ---
>   drivers/dma/xilinx/xdma.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/dma/xilinx/xdma.c b/drivers/dma/xilinx/xdma.c
> index 718842fdaf98..44fae351f0a0 100644
> --- a/drivers/dma/xilinx/xdma.c
> +++ b/drivers/dma/xilinx/xdma.c
> @@ -1240,7 +1240,8 @@ static int xdma_probe(struct platform_device *pdev)
>   
>   	xdev->rmap = devm_regmap_init_mmio(&pdev->dev, reg_base,
>   					   &xdma_regmap_config);
> -	if (!xdev->rmap) {
> +	if (IS_ERR(xdev->rmap)) {
> +		ret = PTR_ERR(xdev->rmap);
>   		xdma_err(xdev, "config regmap failed: %d", ret);
>   		goto failed;
>   	}