From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 DEAE5432BD4 for ; Mon, 20 Jul 2026 15:02:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784559760; cv=none; b=UICtltxyHFI8KBtFZNlhyQDsbV51oeLP9pjtulZlareD+1kx0WT2AiS+R7mOfFqMrKhpBMUrPF5HkRGzPM4f+1Pnyw5cR7uDWSRK+4UogPS0jXY+Bt9MmouDivhR2jNoaOUfMsLEWqLUfCUZV3+JT3aMfUCDq6lj4VBDMXItBb4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784559760; c=relaxed/simple; bh=UOHJvVNv4+jTFl2+V5NKw+YcigWOR/mwmvy6O+TRe8U=; h=Subject:To:Cc:From:Date:Message-ID:MIME-Version:Content-Type; b=Vnc5iQ/0TyJ8hJ6hmst/KOnhsDaXRXmG3ajbJPlEFYSSVuk+cqzkA037cgXlWM8YFdwta3I5Q2t1DXx/9R2D3OQ3630K7oR9Y3tJGCoOoZJlwGcW8Fez1t2KtnuLvQ5pugaTE88LMzhZftD3R5gctO9W0UWcd9JlbhDmlYM/z1w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=CCZVL78E; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="CCZVL78E" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1BA971F000E9; Mon, 20 Jul 2026 15:02:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784559758; bh=RtWAZA5Pvq+PvSGKDnyyxWXxYUHtRRiahxvH2Gwh7PY=; h=Subject:To:Cc:From:Date; b=CCZVL78EQFHH4apiv49nQQ82QkwLfowgMZriDn0UxgwWIpirx9MKtc/xgc5eW9JTh fNfwxpImt6ncQemL6f49h4Y+lXezOeoa732d4HpIEmr14FnYB7tBrUJnBPHElGoaIx 5t4DVQzyHwmWzp/gh252oR9k/Xh1UIQhIAskw//k= Subject: FAILED: patch "[PATCH] dmaengine: dw-edma-pcie: Reject devices without driver data" failed to apply to 5.15-stable tree To: den@valinux.co.jp,Frank.Li@nxp.com,vkoul@kernel.org Cc: From: Date: Mon, 20 Jul 2026 17:02:12 +0200 Message-ID: <2026072012-massive-dragster-edb4@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x 11d7cfe0c119691b2dafbb699bbca90258c678aa # git commit -s git send-email --to '' --in-reply-to '2026072012-massive-dragster-edb4@gregkh' --subject-prefix 'PATCH 5.15.y' 'HEAD^..' Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 11d7cfe0c119691b2dafbb699bbca90258c678aa Mon Sep 17 00:00:00 2001 From: Koichiro Den Date: Thu, 21 May 2026 23:21:51 +0900 Subject: [PATCH] dmaengine: dw-edma-pcie: Reject devices without driver data dw_edma_pcie_probe() treats the PCI device ID driver_data as the template for the controller layout and copies it unconditionally. A device bound dynamically via sysfs can match the driver without that data, which leads to a NULL pointer dereference. Reject such matches before enabling the device. Fixes: 41aaff2a2ac0 ("dmaengine: Add Synopsys eDMA IP PCIe glue-logic") Cc: stable@vger.kernel.org Signed-off-by: Koichiro Den Reviewed-by: Frank Li Link: https://patch.msgid.link/20260521142153.2957432-3-den@valinux.co.jp Signed-off-by: Vinod Koul diff --git a/drivers/dma/dw-edma/dw-edma-pcie.c b/drivers/dma/dw-edma/dw-edma-pcie.c index 2082d0021a8d..791c46e8ae4c 100644 --- a/drivers/dma/dw-edma/dw-edma-pcie.c +++ b/drivers/dma/dw-edma/dw-edma-pcie.c @@ -328,6 +328,9 @@ static int dw_edma_pcie_probe(struct pci_dev *pdev, int i, mask; bool non_ll = false; + if (!pdata) + return -ENODEV; + struct dw_edma_pcie_data *vsec_data __free(kfree) = kmalloc_obj(*vsec_data); if (!vsec_data)