From: Eric Auger <eric.auger-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: eric.auger-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
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Cc: drjones-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
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linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
pranav.sawargaonkar-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
Subject: [RFC v2 2/8] iommu/iova: fix __alloc_and_insert_iova_range
Date: Fri, 4 Nov 2016 11:24:00 +0000 [thread overview]
Message-ID: <1478258646-3117-3-git-send-email-eric.auger@redhat.com> (raw)
In-Reply-To: <1478258646-3117-1-git-send-email-eric.auger-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Fix the size check within start_pfn and limit_pfn.
Signed-off-by: Eric Auger <eric.auger-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
---
the issue was observed when playing with 1 page iova domain with
higher iova reserved.
---
drivers/iommu/iova.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/iova.c b/drivers/iommu/iova.c
index e23001b..ee29dbf 100644
--- a/drivers/iommu/iova.c
+++ b/drivers/iommu/iova.c
@@ -147,7 +147,7 @@ static int __alloc_and_insert_iova_range(struct iova_domain *iovad,
if (!curr) {
if (size_aligned)
pad_size = iova_get_pad_size(size, limit_pfn);
- if ((iovad->start_pfn + size + pad_size) > limit_pfn) {
+ if ((iovad->start_pfn + size + pad_size - 1) > limit_pfn) {
spin_unlock_irqrestore(&iovad->iova_rbtree_lock, flags);
return -ENOMEM;
}
--
1.9.1
next prev parent reply other threads:[~2016-11-04 11:24 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-04 11:23 [RFC v2 0/8] KVM PCIe/MSI passthrough on ARM/ARM64 - Alt II Eric Auger
2016-11-04 11:24 ` [RFC v2 3/8] iommu/dma: Allow MSI-only cookies Eric Auger
[not found] ` <1478258646-3117-4-git-send-email-eric.auger-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-11-14 12:36 ` Robin Murphy
[not found] ` <5f93ebfd-edf4-0b5a-b54a-b96937a588b8-5wv7dgnIgG8@public.gmane.org>
2016-11-14 23:23 ` Auger Eric
2016-11-15 14:52 ` Robin Murphy
2016-11-04 11:24 ` [RFC v2 6/8] iommu: Handle the list of reserved regions Eric Auger
[not found] ` <1478258646-3117-1-git-send-email-eric.auger-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-11-04 11:23 ` [RFC v2 1/8] vfio: fix vfio_info_cap_add/shift Eric Auger
2016-11-04 11:24 ` Eric Auger [this message]
[not found] ` <1478258646-3117-3-git-send-email-eric.auger-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-11-10 15:22 ` [RFC v2 2/8] iommu/iova: fix __alloc_and_insert_iova_range Joerg Roedel
2016-11-10 15:41 ` Auger Eric
2016-11-04 11:24 ` [RFC v2 4/8] iommu: Add a list of iommu_reserved_region in iommu_domain Eric Auger
[not found] ` <1478258646-3117-5-git-send-email-eric.auger-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-11-04 14:00 ` Robin Murphy
2016-11-10 11:22 ` Auger Eric
2016-11-10 11:54 ` Robin Murphy
2016-11-10 12:14 ` Auger Eric
[not found] ` <6c2e1c81-e951-a284-b547-733369128e7e-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-11-10 12:48 ` Robin Murphy
2016-11-10 15:37 ` Joerg Roedel
2016-11-10 15:42 ` Auger Eric
2016-11-04 11:24 ` [RFC v2 5/8] vfio/type1: Introduce RESV_IOVA_RANGE capability Eric Auger
2016-11-04 11:24 ` [RFC v2 7/8] iommu/vt-d: Implement add_reserved_regions callback Eric Auger
2016-11-04 11:24 ` [RFC v2 8/8] iommu/arm-smmu: implement " Eric Auger
2016-11-04 14:16 ` Robin Murphy
[not found] ` <1478258646-3117-9-git-send-email-eric.auger-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-11-10 15:46 ` Joerg Roedel
[not found] ` <20161110154606.GH2078-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2016-11-10 15:57 ` Auger Eric
2016-11-10 16:13 ` Joerg Roedel
[not found] ` <20161110161331.GJ2078-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2016-11-10 18:00 ` Auger Eric
[not found] ` <f4537e43-0237-e478-eacd-b107458628b8-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-11-11 11:42 ` Joerg Roedel
2016-11-11 15:47 ` Auger Eric
2016-11-11 16:22 ` Joerg Roedel
[not found] ` <20161111162211.GU2078-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2016-11-11 16:45 ` Auger Eric
2016-11-14 15:31 ` Joerg Roedel
2016-11-14 16:08 ` Auger Eric
[not found] ` <295feefe-014b-5669-7f5a-e04b09ba3454-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-11-14 16:20 ` Joerg Roedel
2016-11-14 16:57 ` Auger Eric
2016-11-10 16:07 ` Robin Murphy
[not found] ` <b347ddbc-5066-641c-8101-289fb28624a3-5wv7dgnIgG8@public.gmane.org>
2016-11-10 16:16 ` Joerg Roedel
[not found] ` <20161110161619.GK2078-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>
2016-11-11 14:34 ` Robin Murphy
[not found] ` <479aeac0-71f9-a6b8-af6d-e2c25184a818-5wv7dgnIgG8@public.gmane.org>
2016-11-11 15:03 ` Joerg Roedel
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