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 6F27C29D291; Tue, 26 Aug 2025 13:43:54 +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=1756215835; cv=none; b=TQvjnsjba0nay9FMNnqhnK88iRmcWlzf3l/PF5mzsbQkLUY+l7rU/vRJo7qpFj3AtNlxTI9pMOxx0mpjm/6YPjwPOOKpR7XcDNFKp+SqXKRwyOF4T0N4+PO1gv2UxVgjbbeiymnfcQHaYToKXwYkzwgMz0IlrBU3X7MavYMUTok= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756215835; c=relaxed/simple; bh=YMNP+I3SUFl8QKi1NnjPbwIcWnXnrja2h+eBUaQ+wJA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Y06JXchUXrtgN099ttMIZkbpvJ/z1E33TVnUjSuwDLWCSRyI19zId6C6BjkhtoyXnIWBOuEtqs7ZEemn0DBhGdufcD5bmggwWuRyE6USUx4d9rUgoaw87SYAFomkSzy3rFF7sSwSEbVAr5qDudpmbVXJXem3SAeTWvX6V140qv4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ioKkqSxZ; 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="ioKkqSxZ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9279AC4CEF1; Tue, 26 Aug 2025 13:43:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1756215833; bh=YMNP+I3SUFl8QKi1NnjPbwIcWnXnrja2h+eBUaQ+wJA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ioKkqSxZSpxWNDgRfPXjoQ169tmQtqgrqWmD0mPe9rVEfFs0By0OHJPaIMFMV3TM9 AP7RKGGR+ibUspd+cJ6MG/Vl+zAAKKpphDSfz4JuTS14Z/lRcC8cF2uOU2NJdpGbVB 06nDQYiYgw/YPVII7sDDcd7nVqMI9Rqt6RRJcOMU= 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 5.15 183/644] scsi: ibmvscsi_tgt: Fix dma_unmap_sg() nents value Date: Tue, 26 Aug 2025 13:04:34 +0200 Message-ID: <20250826110950.998635663@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250826110946.507083938@linuxfoundation.org> References: <20250826110946.507083938@linuxfoundation.org> User-Agent: quilt/0.68 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 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Thomas Fourier [ Upstream commit 023a293b9cd0bb86a9b50cd7688a3d9d266826db ] The dma_unmap_sg() functions should be called with the same nents as the dma_map_sg(), not the value the map function returned. Fixes: 88a678bbc34c ("ibmvscsis: Initial commit of IBM VSCSI Tgt Driver") Signed-off-by: Thomas Fourier Link: https://lore.kernel.org/r/20250630111803.94389-2-fourier.thomas@gmail.com Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/ibmvscsi_tgt/libsrp.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/ibmvscsi_tgt/libsrp.c b/drivers/scsi/ibmvscsi_tgt/libsrp.c index 8a0e28aec928..0ecad398ed3d 100644 --- a/drivers/scsi/ibmvscsi_tgt/libsrp.c +++ b/drivers/scsi/ibmvscsi_tgt/libsrp.c @@ -184,7 +184,8 @@ static int srp_direct_data(struct ibmvscsis_cmd *cmd, struct srp_direct_buf *md, err = rdma_io(cmd, sg, nsg, md, 1, dir, len); if (dma_map) - dma_unmap_sg(iue->target->dev, sg, nsg, DMA_BIDIRECTIONAL); + dma_unmap_sg(iue->target->dev, sg, cmd->se_cmd.t_data_nents, + DMA_BIDIRECTIONAL); return err; } @@ -256,7 +257,8 @@ static int srp_indirect_data(struct ibmvscsis_cmd *cmd, struct srp_cmd *srp_cmd, err = rdma_io(cmd, sg, nsg, md, nmd, dir, len); if (dma_map) - dma_unmap_sg(iue->target->dev, sg, nsg, DMA_BIDIRECTIONAL); + dma_unmap_sg(iue->target->dev, sg, cmd->se_cmd.t_data_nents, + DMA_BIDIRECTIONAL); free_mem: if (token && dma_map) { -- 2.39.5