linux-kernel - Re: [PATCH] iommu/dmar: fix buffer overflow during PCI bus notification

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Message-ID: <20190226102527.GF20740@8bytes.org>
Date:   Tue, 26 Feb 2019 11:25:27 +0100
From:   Joerg Roedel <joro@...tes.org>
To:     Julia Cartwright <julia@...com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>
Subject: Re: [PATCH] iommu/dmar: fix buffer overflow during PCI bus
 notification

On Wed, Feb 20, 2019 at 07:17:45PM +0000, Julia Cartwright wrote:
> On Wed, Feb 20, 2019 at 10:46:31AM -0600, Julia Cartwright wrote:
> > -	size = sizeof(*info) + level * sizeof(struct acpi_dmar_pci_path);
> > +	size = sizeof(*info) + level * sizeof(info->path[0]);
> 
> This is probably a candidate for struct_size() instead, if that's what
> is preferred.

No, patch is fine as-is. Thanks a lot, applied to iommu/fixes branch.


	Joerg