| Message ID | 1343402314-15678-1-git-send-email-m.szyprowski@samsung.com |
|---|---|
| State | Accepted |
| Commit | 9fa8af91f0679f2abbebe1382b937264f3a8b981 |
| Headers | show
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[91.189.95.16]) by mx.google.com with ESMTP id k55si3061546wes.85.2012.07.27.08.19.05; Fri, 27 Jul 2012 08:19:06 -0700 (PDT) Received-SPF: neutral (google.com: 91.189.95.16 is neither permitted nor denied by best guess record for domain of linaro-mm-sig-bounces@lists.linaro.org) client-ip=91.189.95.16; Authentication-Results: mx.google.com; spf=neutral (google.com: 91.189.95.16 is neither permitted nor denied by best guess record for domain of linaro-mm-sig-bounces@lists.linaro.org) smtp.mail=linaro-mm-sig-bounces@lists.linaro.org Received: from localhost ([127.0.0.1] helo=mombin.canonical.com) by mombin.canonical.com with esmtp (Exim 4.71) (envelope-from <linaro-mm-sig-bounces@lists.linaro.org>) id 1SumJi-0000fa-GE; Fri, 27 Jul 2012 15:19:02 +0000 Received: from mailout4.samsung.com ([203.254.224.34]) by mombin.canonical.com with esmtp (Exim 4.71) (envelope-from <m.szyprowski@samsung.com>) id 1SumJg-0000fQ-Vf for linaro-mm-sig@lists.linaro.org; Fri, 27 Jul 2012 15:19:01 +0000 Received: from epcpsbgm1.samsung.com (mailout4.samsung.com [203.254.224.34]) by mailout4.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0M7T0030WRULJB80@mailout4.samsung.com> for linaro-mm-sig@lists.linaro.org; Sat, 28 Jul 2012 00:18:57 +0900 (KST) X-AuditID: cbfee61a-b7f616d000004b7e-39-5012b1602b0d Received: from epmmp1.local.host ( [203.254.227.16]) by epcpsbgm1.samsung.com (EPCPMTA) with SMTP id 6A.34.19326.061B2105; Sat, 28 Jul 2012 00:18:56 +0900 (KST) Received: from mcdsrvbld02.digital.local ([106.116.37.23]) by mmp1.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0M7T00LEERV6SY90@mmp1.samsung.com> for linaro-mm-sig@lists.linaro.org; Sat, 28 Jul 2012 00:18:56 +0900 (KST) From: Marek Szyprowski <m.szyprowski@samsung.com> To: linux-arm-kernel@lists.infradead.org, linaro-mm-sig@lists.linaro.org Date: Fri, 27 Jul 2012 17:18:34 +0200 Message-id: <1343402314-15678-1-git-send-email-m.szyprowski@samsung.com> X-Mailer: git-send-email 1.7.10 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrNJMWRmVeSWpSXmKPExsVy+t9jAd2EjUIBBt3fLS2+XHnI5MDocfvf Y+YAxigum5TUnMyy1CJ9uwSujJkrW9kK1rBV7Dm0hK2BcQFrFyMnh4SAicSXDWdYIGwxiQv3 1rN1MXJxCAksYpTYP+U2O4Szlkni0KwGJpAqNgFDia63XWwgtoiAh8STFeeYQYqYBRYzS7z7 sIyxi5GDQ1jAX+LIwzqQGhYBVYmbM3vBNvAC1S9/P5UZYpu8xNP7fWwTGLkXMDKsYhRNLUgu KE5KzzXUK07MLS7NS9dLzs/dxAj24jOpHYwrGywOMQpwMCrx8E7kFQoQYk0sK67MPcQowcGs JMKrvQooxJuSWFmVWpQfX1Sak1p8iFGag0VJnNfY+6u/kEB6YklqdmpqQWoRTJaJg1OqgTGj ZsuTKazOHx0tr07g/HU8rqfnvtmBKVU5arOFtTlUHtml8NSWs6656yyfXF9yjzXtr8i+p0fU JjmJmPfJzgm7u0u9XyD95fkFRT/3OCzIMZOIk8udd4SFo4LtY9mdhp/cm26dz49fLvVlaY7J ddaJr+/sYH4i8eDipn9e64LUGVUDZQJs7JVYijMSDbWYi4oTAarA0pLeAQAA X-TM-AS-MML: No Cc: Abhinav Kochhar <abhinav.k@samsung.com>, Russell King - ARM Linux <linux@arm.linux.org.uk>, Arnd Bergmann <arnd@arndb.de>, Kyungmin Park <kyungmin.park@samsung.com>, Subash Patel <subash.ramaswamy@linaro.org> Subject: [Linaro-mm-sig] [PATCH] ARM: DMA-mapping: fix error path for memory allocation failure X-BeenThere: linaro-mm-sig@lists.linaro.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: "Unified memory management interest group." <linaro-mm-sig.lists.linaro.org> List-Unsubscribe: <http://lists.linaro.org/mailman/options/linaro-mm-sig>, <mailto:linaro-mm-sig-request@lists.linaro.org?subject=unsubscribe> List-Archive: <http://lists.linaro.org/pipermail/linaro-mm-sig> List-Post: <mailto:linaro-mm-sig@lists.linaro.org> List-Help: <mailto:linaro-mm-sig-request@lists.linaro.org?subject=help> List-Subscribe: <http://lists.linaro.org/mailman/listinfo/linaro-mm-sig>, <mailto:linaro-mm-sig-request@lists.linaro.org?subject=subscribe> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: linaro-mm-sig-bounces@lists.linaro.org Errors-To: linaro-mm-sig-bounces@lists.linaro.org X-Gm-Message-State: ALoCoQkZbb5jqDQWVc8dy/Uy6G8E9O0vcbTuGgsSVPfgR2fC14n7jfoKHLvNOdFqPVOXGkDlPI8A |
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 7a1d224..3096ed2 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -977,7 +977,7 @@ static struct page **__iommu_alloc_buffer(struct device *dev, size_t size, gfp_t return pages; error: - while (--i) + while (i--) if (pages[i]) __free_pages(pages[i], 0); if (array_size <= PAGE_SIZE)
This patch fixes incorrect check in error path. When the allocation of first page fails, the kernel ops appears due to accessing -1 element of the pages array. Reported-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> --- arch/arm/mm/dma-mapping.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)