From nobody Tue Aug 25 14:34:21 2026 Received: from m16.mail.126.com (m16.mail.126.com [220.197.31.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0DAF433938B; Fri, 14 Aug 2026 06:30:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=220.197.31.7 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786689058; cv=none; b=XU+2P+oVDh1Aw6RnSjPRN9z1zOuortqG5aDtkU8w8p042WB9McrzSB0qiUqxTAzCRliv33OnaQFG/vQMg0UxSp69TNKXAS2Fv4anfZrfDBNUPzqx05HGRhi7TrRslpGqVq0u+tTrhCxX7CS8/noGmkypbGLHVuiUsoQSdDiWBa8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786689058; c=relaxed/simple; bh=Ei4PqC2OTcR1IwKMO5sp5iFiMayZwV8thkF3iqfhTkI=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version:Content-Type; b=OHmWOT7Yj+rx6oe2WnnveqwT11tLujuXz8/4JZhITgtQW30nyWZwS2QC2icSkmCYwtwZ5DYI4Mb1dktQckzzgaSO9axR3brdur3ka4rBs+GczNUV1ZFcOvXAsGIsfMKu+8K88B7iuF+R5rbnar1C2f045kFwzL+f41NNHzgnxVA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=126.com; spf=pass smtp.mailfrom=126.com; dkim=pass (1024-bit key) header.d=126.com header.i=@126.com header.b=krSVac0o; arc=none smtp.client-ip=220.197.31.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=126.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=126.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=126.com header.i=@126.com header.b="krSVac0o" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=126.com; s=s110527; h=From:To:Subject:Date:Message-Id:MIME-Version: Content-Type; bh=5ccNSyKHH1BFnt+U2tRSRy9zZz6o5I2byydWT58rQtU=; b=krSVac0opkxKF+DEIx0dymEX7DkZh15pp0G2m9P9t/41RWPzIdOEL+lGswkIHx biXNYv2CaMBTAlglrvHbNsPiYBDZmAYqb801Ih5o7NGOhSm/hc2pfNtYPtDyuVe5 TpJth0bjO6p2U61zwf8tRIFWwgJaOZyrsbSUnFq0ekKVA= Received: from hg-OptiPlex-7040.hygon.cn (unknown []) by gzga-smtp-mtada-g1-2 (Coremail) with SMTP id _____wD3r1zstX5qEtOaFQ--.33853S2; Fri, 14 Aug 2026 14:30:05 +0800 (CST) From: yangge1116@126.com To: m.szyprowski@samsung.com Cc: iommu@lists.linux.dev, linux-kernel@vger.kernel.org, stable@vger.kernel.org, robin.murphy@arm.com, hch@lst.de, liuzixing@hygon.cn, Ge Yang Subject: [PATCH] dma-direct: fix type mismatch in dma_direct_alloc_pages Date: Fri, 14 Aug 2026 14:30:00 +0800 Message-Id: <1786689000-14677-1-git-send-email-yangge1116@126.com> X-Mailer: git-send-email 2.7.4 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: _____wD3r1zstX5qEtOaFQ--.33853S2 X-Coremail-Antispam: 1Uf129KBjvJXoW7XrWrKryUZw13WF1UJw4rAFb_yoW8JrWDpr 4agFy7K3yYkFWxC3ZrZ3WkurZFy34rAa1rGFy7Z3s3Zrn5Wr4fKr1UC34rtw18tFZ8KFWx XFs8tF1Fyr4UWaDanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x0zRP739UUUUU= X-CM-SenderInfo: 51dqwwjhrrila6rslhhfrp/xtbBqQ3i-Wp+te1juwAA3v From: Ge Yang The pool allocation path directly returned the void* cpu virtual address from dma_direct_alloc_from_pool(), which is type=E2=80=91mismatched against struct page *. Convert the dma_handle to page via dma_direct_to_page() instead. Fixes: 5b138c534fda ("dma-direct: factor out a dma_direct_alloc_from_pool h= elper") Signed-off-by: Ge Yang Cc: stable@vger.kernel.org --- kernel/dma/direct.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c index 4391b79..f496568 100644 --- a/kernel/dma/direct.c +++ b/kernel/dma/direct.c @@ -356,8 +356,12 @@ struct page *dma_direct_alloc_pages(struct device *dev= , size_t size, struct page *page; void *ret; =20 - if (force_dma_unencrypted(dev) && dma_direct_use_pool(dev, gfp)) - return dma_direct_alloc_from_pool(dev, size, dma_handle, gfp); + if (force_dma_unencrypted(dev) && dma_direct_use_pool(dev, gfp)) { + ret =3D dma_direct_alloc_from_pool(dev, size, dma_handle, gfp); + if (!ret) + return NULL; + return dma_direct_to_page(dev, *dma_handle); + } =20 page =3D __dma_direct_alloc_pages(dev, size, gfp, false); if (!page) --=20 2.7.4