From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 7FCC9320CB6; Fri, 9 Jan 2026 12:12:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767960771; cv=none; b=OnG8P+Gom8UkFJRps42goQgdrtZCd0bFJ1io+ff2kbOaB55l5QxMLC+RAf7+WW8g7McAgp82tihM7F2BbUYRc3ITCb+Px5r/zvFX0We6VsZVjl78XGPBRBB5QzTC2Mpz6W2MT+QfkcCagkF7Cqe230bti7QVa1IdbBTZ4JtlFLo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767960771; c=relaxed/simple; bh=ssDBDHVd33TrGFjq8vK319ib6vs2lV9DSaEHwVum0o4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=V0Jofrwe5vJmSaQcg2JNIsjNawA4dwVlfiWZyXMy42pFU4oVEnoTI0jh5R8dgmnLKL66p57dP8nIzkHkfRgYkqxqxeBwqD5M6wHIN9fqzm21sHEvvy09GUD39uAJZc1AGNt97aRfNiCAr82JMOy1xl4iTZBicxX7n9WR0+7uMZM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=TrGx3sgq; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="TrGx3sgq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0BFA0C4CEF1; Fri, 9 Jan 2026 12:12:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1767960771; bh=ssDBDHVd33TrGFjq8vK319ib6vs2lV9DSaEHwVum0o4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TrGx3sgqjfi19XK32VHxT7/qbvYzUCrTDuW0KdH/q3yyYiz0oGGGZIz2AyrMvXjsv ePMMkUP/nrKWqTIhQFSWH/tYtmqapf6PEf6j8UXr1V92A5f0xRtmCF75gpXDjd/jJ9 s/MkHSTTJcaycuAKp/ppjyChEsYH1y04/wrWAIxA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Thomas Fourier , Christophe JAILLET , Takashi Sakamoto , Sasha Levin Subject: [PATCH 6.6 519/737] firewire: nosy: Fix dma_free_coherent() size Date: Fri, 9 Jan 2026 12:40:58 +0100 Message-ID: <20260109112153.523781903@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260109112133.973195406@linuxfoundation.org> References: <20260109112133.973195406@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Thomas Fourier [ Upstream commit c48c0fd0e19684b6ecdb4108a429e3a4e73f5e21 ] It looks like the buffer allocated and mapped in add_card() is done with size RCV_BUFFER_SIZE which is 16 KB and 4KB. Fixes: 286468210d83 ("firewire: new driver: nosy - IEEE 1394 traffic sniffer") Co-developed-by: Thomas Fourier Signed-off-by: Thomas Fourier Co-developed-by: Christophe JAILLET Signed-off-by: Christophe JAILLET Link: https://lore.kernel.org/r/20251216165420.38355-2-fourier.thomas@gmail.com Signed-off-by: Takashi Sakamoto Signed-off-by: Sasha Levin --- drivers/firewire/nosy.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/firewire/nosy.c b/drivers/firewire/nosy.c index ea31ac7ac1ca..e59053738a43 100644 --- a/drivers/firewire/nosy.c +++ b/drivers/firewire/nosy.c @@ -36,6 +36,8 @@ static char driver_name[] = KBUILD_MODNAME; +#define RCV_BUFFER_SIZE (16 * 1024) + /* this is the physical layout of a PCL, its size is 128 bytes */ struct pcl { __le32 next; @@ -517,16 +519,14 @@ remove_card(struct pci_dev *dev) lynx->rcv_start_pcl, lynx->rcv_start_pcl_bus); dma_free_coherent(&lynx->pci_device->dev, sizeof(struct pcl), lynx->rcv_pcl, lynx->rcv_pcl_bus); - dma_free_coherent(&lynx->pci_device->dev, PAGE_SIZE, lynx->rcv_buffer, - lynx->rcv_buffer_bus); + dma_free_coherent(&lynx->pci_device->dev, RCV_BUFFER_SIZE, + lynx->rcv_buffer, lynx->rcv_buffer_bus); iounmap(lynx->registers); pci_disable_device(dev); lynx_put(lynx); } -#define RCV_BUFFER_SIZE (16 * 1024) - static int add_card(struct pci_dev *dev, const struct pci_device_id *unused) { @@ -680,7 +680,7 @@ add_card(struct pci_dev *dev, const struct pci_device_id *unused) dma_free_coherent(&lynx->pci_device->dev, sizeof(struct pcl), lynx->rcv_pcl, lynx->rcv_pcl_bus); if (lynx->rcv_buffer) - dma_free_coherent(&lynx->pci_device->dev, PAGE_SIZE, + dma_free_coherent(&lynx->pci_device->dev, RCV_BUFFER_SIZE, lynx->rcv_buffer, lynx->rcv_buffer_bus); iounmap(lynx->registers); -- 2.51.0