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 AED6730AD1C; Mon, 13 Oct 2025 15:13:17 +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=1760368397; cv=none; b=rlbF8dwrYVHlOyU3Z0h8hZYSLTcMiALpPN3K1bpanUYQyu6Xko0FIMGXc8s9+wsF8jmMsomaUPeFCi1GPVlHtlTvdNPjUncBMMjbvI9m1n6grqRtQj0PjF2s+AbaknggZ1bLTlZOMk/NQmUZnpFdI8OWi/7HjWb/gm5qeWzx8Fg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760368397; c=relaxed/simple; bh=tRiKZAXsQHUqGWAv9mcmNglu93wqpa24Z4GcvrR3XHU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=bo5iL2HuozIr9KjKmIXIgDP6Z0+OcmKrzpvHh/hMi0D4j/74MP7631FFmkvLRhFlBA8DzN2reujl2xh/44stya3aHTADRHTBMqd9tGE4U+Vfcw0sbFSccDqnrntmMbRuRXB4gZGDWwmpgKfiXFtmPt4nzJK4nnGQiwf3qsiUGI4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=YfPhLnUM; 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="YfPhLnUM" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3C4C0C4CEE7; Mon, 13 Oct 2025 15:13:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1760368397; bh=tRiKZAXsQHUqGWAv9mcmNglu93wqpa24Z4GcvrR3XHU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YfPhLnUMVV7LXLmP+zHbUrS5u5Jer/Y/dY4kVh8wCQAOqRRYQ5J3VhgbCmL7w5ECn YT8l8XYVa/1FURDRWPOGywvN0ONFqmdpHVE1TBzjeUkABRIqQsLlSLhbyjxAAoBbgR ecZ5xJhAtVhTiuCad85FPgK8iwblJbxxzg/wWpYY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Thomas Fourier , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 6.12 103/262] scsi: myrs: Fix dma_alloc_coherent() error check Date: Mon, 13 Oct 2025 16:44:05 +0200 Message-ID: <20251013144329.838502738@linuxfoundation.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251013144326.116493600@linuxfoundation.org> References: <20251013144326.116493600@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Thomas Fourier [ Upstream commit edb35b1ffc686fd9b5a91902f034eb9f4d2c9f6b ] Check for NULL return value with dma_alloc_coherent(), because DMA address is not always set by dma_alloc_coherent() on failure. Fixes: 77266186397c ("scsi: myrs: Add Mylex RAID controller (SCSI interface)") Signed-off-by: Thomas Fourier Link: https://lore.kernel.org/r/20250725083112.43975-2-fourier.thomas@gmail.com Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/myrs.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/scsi/myrs.c b/drivers/scsi/myrs.c index 1469d0c54e455..5a02fd3bc6c9e 100644 --- a/drivers/scsi/myrs.c +++ b/drivers/scsi/myrs.c @@ -498,14 +498,14 @@ static bool myrs_enable_mmio_mbox(struct myrs_hba *cs, /* Temporary dma mapping, used only in the scope of this function */ mbox = dma_alloc_coherent(&pdev->dev, sizeof(union myrs_cmd_mbox), &mbox_addr, GFP_KERNEL); - if (dma_mapping_error(&pdev->dev, mbox_addr)) + if (!mbox) return false; /* These are the base addresses for the command memory mailbox array */ cs->cmd_mbox_size = MYRS_MAX_CMD_MBOX * sizeof(union myrs_cmd_mbox); cmd_mbox = dma_alloc_coherent(&pdev->dev, cs->cmd_mbox_size, &cs->cmd_mbox_addr, GFP_KERNEL); - if (dma_mapping_error(&pdev->dev, cs->cmd_mbox_addr)) { + if (!cmd_mbox) { dev_err(&pdev->dev, "Failed to map command mailbox\n"); goto out_free; } @@ -520,7 +520,7 @@ static bool myrs_enable_mmio_mbox(struct myrs_hba *cs, cs->stat_mbox_size = MYRS_MAX_STAT_MBOX * sizeof(struct myrs_stat_mbox); stat_mbox = dma_alloc_coherent(&pdev->dev, cs->stat_mbox_size, &cs->stat_mbox_addr, GFP_KERNEL); - if (dma_mapping_error(&pdev->dev, cs->stat_mbox_addr)) { + if (!stat_mbox) { dev_err(&pdev->dev, "Failed to map status mailbox\n"); goto out_free; } @@ -533,7 +533,7 @@ static bool myrs_enable_mmio_mbox(struct myrs_hba *cs, cs->fwstat_buf = dma_alloc_coherent(&pdev->dev, sizeof(struct myrs_fwstat), &cs->fwstat_addr, GFP_KERNEL); - if (dma_mapping_error(&pdev->dev, cs->fwstat_addr)) { + if (!cs->fwstat_buf) { dev_err(&pdev->dev, "Failed to map firmware health buffer\n"); cs->fwstat_buf = NULL; goto out_free; -- 2.51.0