From: Jason Gunthorpe <jgg@ziepe.ca>
To: Su Hui <suhui@nfschina.com>
Cc: Joerg Roedel <joro@8bytes.org>,
Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>,
Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
kevin.tian@intel.com, vasant.hegde@amd.com,
iommu@lists.linux.dev, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] iommu/amd: Fix possible memory leak of 'domain'
Date: Wed, 7 Jun 2023 11:22:42 -0300 [thread overview]
Message-ID: <ZICSskXNlR+ckKvC@ziepe.ca> (raw)
In-Reply-To: <20230606070742.139575-1-suhui@nfschina.com>
On Tue, Jun 06, 2023 at 03:07:42PM +0800, Su Hui wrote:
> free memory of domain before return NULL.
>
> Fixes: 29f54745f245 ("iommu/amd: Add missing domain type checks")
> Signed-off-by: Su Hui <suhui@nfschina.com>
> ---
> drivers/iommu/amd/iommu.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c
> index dc1ec6849775..f08e65629c74 100644
> --- a/drivers/iommu/amd/iommu.c
> +++ b/drivers/iommu/amd/iommu.c
> @@ -2094,7 +2094,7 @@ static struct protection_domain *protection_domain_alloc(unsigned int type)
> } else if (type == IOMMU_DOMAIN_DMA || type == IOMMU_DOMAIN_DMA_FQ) {
> pgtable = amd_iommu_pgtable;
> } else {
> - return NULL;
> + goto out_err;
> }
It might be nicer to order to allocation after the type checks, it is
more consistent with the other drivers
This is fine too
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Thanks,
Jason
next prev parent reply other threads:[~2023-06-07 14:22 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-06 7:07 [PATCH] iommu/amd: Fix possible memory leak of 'domain' Su Hui
2023-06-07 4:19 ` Vasant Hegde
2023-06-07 14:22 ` Jason Gunthorpe [this message]
2023-06-07 14:26 ` Vasant Hegde
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=ZICSskXNlR+ckKvC@ziepe.ca \
--to=jgg@ziepe.ca \
--cc=iommu@lists.linux.dev \
--cc=joro@8bytes.org \
--cc=kevin.tian@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=robin.murphy@arm.com \
--cc=suhui@nfschina.com \
--cc=suravee.suthikulpanit@amd.com \
--cc=vasant.hegde@amd.com \
--cc=will@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).