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 83FC4267B63; Tue, 11 Feb 2025 01:32:39 +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=1739237559; cv=none; b=RL1NjMOxOWkCyeQLTTkxpg9utuSj3XZg9ssKAYuk0PRewr3Hihc9VB8XTOCSKZ3LEl2v1LwP7EGaVOHRMmC+BB6iI+cJLHMEoFGARw85jOjtiai+RiBknf9gknQtaN553vRDAbpjxYYqhHT261OAy3LexJ9lml6XCpMUYGeTGVI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739237559; c=relaxed/simple; bh=ZdT8FSHziDvTo3lgl4+V4vle+XXXwAJwbZx2uV0vCNQ=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=B1x7zjBLYzT7mlIuqQEIutEUSfRXUTYaVFcsb8JCJ1SFiiVB6gHJaRH18jwicc/pUQJcOmFfXtTo1wYuy4ZVImsQ81g1u5CJaDh4XGxsueyrM+/Nn4/n7eWpH2rhqosPnnPVNuxspvqY8+hsnLfD5iHcDDpRXau+EdKmCj2AdT4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=qpxgNIz2; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="qpxgNIz2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 82A0BC4CEEA; Tue, 11 Feb 2025 01:32:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1739237559; bh=ZdT8FSHziDvTo3lgl4+V4vle+XXXwAJwbZx2uV0vCNQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qpxgNIz2RfsIKUV1sN4ChV8pSmJCSh9EDdhY+wPXZWZUDSTllT4vjn2fOX8PnPI90 9CwDgDzbw0NAHBOGCZlATzOTWLG0Qj2G30mY1CvKagLnB0JSHj6IanJlesk7iHXl1g +x1m1ShmBE3fuwSpSWW96VE+XqaRXj88griMRbDxC3XZ4GHOGB8P0aih6bl6Y9mMdk znskUJ6rrl4A9ANP77HLpYh81ZplkWw1wcX1Yv7vNQ+gKdExgsJAOW+DTOE4Qsw030 bxhuA4hJYbEX5Y89h0o0lQfa/N/b97ueYVm3oUQeJiGfkvxkGptvJmJRuOkuOUorzM ZugHN+0SHK3aQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Magnus Lindholm , "Martin K . Petersen" , Sasha Levin , mdr@sgi.com, James.Bottomley@HansenPartnership.com, linux-scsi@vger.kernel.org Subject: [PATCH AUTOSEL 5.15 6/9] scsi: qla1280: Fix kernel oops when debug level > 2 Date: Mon, 10 Feb 2025 20:32:27 -0500 Message-Id: <20250211013230.4098681-6-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250211013230.4098681-1-sashal@kernel.org> References: <20250211013230.4098681-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.15.178 Content-Transfer-Encoding: 8bit From: Magnus Lindholm [ Upstream commit 5233e3235dec3065ccc632729675575dbe3c6b8a ] A null dereference or oops exception will eventually occur when qla1280.c driver is compiled with DEBUG_QLA1280 enabled and ql_debug_level > 2. I think its clear from the code that the intention here is sg_dma_len(s) not length of sg_next(s) when printing the debug info. Signed-off-by: Magnus Lindholm Link: https://lore.kernel.org/r/20250125095033.26188-1-linmag7@gmail.com Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/qla1280.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/qla1280.c b/drivers/scsi/qla1280.c index d0b4e063bfe1e..eb8e9c54837e0 100644 --- a/drivers/scsi/qla1280.c +++ b/drivers/scsi/qla1280.c @@ -2875,7 +2875,7 @@ qla1280_64bit_start_scsi(struct scsi_qla_host *ha, struct srb * sp) dprintk(3, "S/G Segment phys_addr=%x %x, len=0x%x\n", cpu_to_le32(upper_32_bits(dma_handle)), cpu_to_le32(lower_32_bits(dma_handle)), - cpu_to_le32(sg_dma_len(sg_next(s)))); + cpu_to_le32(sg_dma_len(s))); remseg--; } dprintk(5, "qla1280_64bit_start_scsi: Scatter/gather " -- 2.39.5