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client-ip=165.204.84.17; helo=satlexmb07.amd.com; pr=C Received: from satlexmb07.amd.com (165.204.84.17) by CH1PEPF0000AD74.mail.protection.outlook.com (10.167.244.52) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.71.7 via Frontend Transport; Tue, 26 May 2026 11:19:33 +0000 Received: from [127.0.1.1] (10.180.168.240) by satlexmb07.amd.com (10.181.42.216) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.41; Tue, 26 May 2026 06:19:31 -0500 From: Shivank Garg Subject: [PATCH v2 0/2] dmaengine: fix kref underflow and UAF in dma_chan_put() Date: Tue, 26 May 2026 11:19:17 +0000 Message-ID: <20260526-dmaengine-kref-fix-v2-0-3df60afac01d@amd.com> Precedence: bulk X-Mailing-List: dmaengine@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIALWBFWoC/32NQQ6DIBBFr2Jm3WmAgNqueo/GBciok0Y00BAb4 91LPUCX7//893dIFJkS3KsdImVOvIQC6lJBP9kwErIvDEqoWhjZop8thZED4SvSgANv2Dglbe/ ETRsDZbiWgrdT+uwKT5zeS/ycH1n+0r+6LFGi9rVURuh2cM3Dzv7aLzN0x3F8Ad7l+tWyAAAA X-Change-ID: 20260518-dmaengine-kref-fix-7b21acb09455 To: Vinod Koul , Frank Li , "Logan Gunthorpe" CC: , , , Shivank Garg , Sashiko X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; 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Signed-off-by: Shivank Garg --- Changes in v2: - Add patch 2 fixing the dma_chan_put()/dma_release_channel() use-after-free (sashiko) - Link to v1: https://lore.kernel.org/r/20260518-dmaengine-kref-fix-v1-1-4d6125048fb7@amd.com --- Shivank Garg (2): dmaengine: Fix device kref underflow in dma_chan_put() dmaengine: fix use-after-free in dma_chan_put() and dma_release_channel() drivers/dma/dmaengine.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) --- base-commit: e8c2f9fdadee7cbc75134dc463c1e0d856d6e5c7 change-id: 20260518-dmaengine-kref-fix-7b21acb09455 Best regards, -- Shivank Garg