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From: Christoph Hellwig <hch@infradead.org>
To: Eric Auger <eric.auger@redhat.com>
Cc: eric.auger.pro@gmail.com, joro@8bytes.org,
	iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
	dwmw2@infradead.org, robin.murphy@arm.com,
	jean-philippe.brucker@arm.com, alex.williamson@redhat.com
Subject: Re: [PATCH v5 1/7] iommu: Fix a leak in iommu_insert_resv_region
Date: Tue, 28 May 2019 23:17:56 -0700	[thread overview]
Message-ID: <20190529061756.GB26055@infradead.org> (raw)
In-Reply-To: <20190528115025.17194-2-eric.auger@redhat.com>

>  		} else if ((start >= a) && (end <= b)) {
>  			if (new->type == type)
> -				goto done;
> +				return 0;
>  			else
>  				pos = pos->next;

Please remove the pointless else after the return statement.

>  		} else {
>  			if (new->type == type) {
>  				phys_addr_t new_start = min(a, start);
>  				phys_addr_t new_end = max(b, end);
> +				int ret;
>  
>  				list_del(&entry->list);
>  				entry->start = new_start;
>  				entry->length = new_end - new_start + 1;
> -				iommu_insert_resv_region(entry, regions);
> +				ret = iommu_insert_resv_region(entry, regions);
> +				kfree(entry);
> +				return ret;
>  			} else {
>  				pos = pos->next;
>  			}

Same here.

  reply	other threads:[~2019-05-29  6:18 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-28 11:50 [PATCH v5 0/7] RMRR related fixes and enhancements Eric Auger
2019-05-28 11:50 ` [PATCH v5 1/7] iommu: Fix a leak in iommu_insert_resv_region Eric Auger
2019-05-29  6:17   ` Christoph Hellwig [this message]
2019-05-29 15:38     ` Auger Eric
2019-05-28 11:50 ` [PATCH v5 2/7] iommu/vt-d: Duplicate iommu_resv_region objects per device list Eric Auger
2019-05-29  2:04   ` Lu Baolu
2019-05-29 15:40     ` Auger Eric
2019-05-28 11:50 ` [PATCH v5 3/7] iommu/vt-d: Introduce is_downstream_to_pci_bridge helper Eric Auger
2019-05-29  2:11   ` Lu Baolu
2019-05-29  6:21   ` Christoph Hellwig
2019-05-29 15:43     ` Auger Eric
2019-05-28 11:50 ` [PATCH v5 4/7] iommu/vt-d: Handle RMRR with PCI bridge device scopes Eric Auger
2019-05-29  2:12   ` Lu Baolu
2019-05-28 11:50 ` [PATCH v5 5/7] iommu/vt-d: Handle PCI bridge RMRR device scopes in intel_iommu_get_resv_regions Eric Auger
2019-05-29  2:13   ` Lu Baolu
2019-05-28 11:50 ` [PATCH v5 6/7] iommu: Introduce IOMMU_RESV_DIRECT_RELAXABLE reserved memory regions Eric Auger
2019-05-28 11:50 ` [PATCH v5 7/7] iommu/vt-d: Differentiate relaxable and non relaxable RMRRs Eric Auger
2019-05-29  2:34   ` Lu Baolu
2019-05-29 15:43     ` Auger Eric

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