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hc
2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 
 kernel/drivers/crypto/cavium/cpt/cptpf_main.c
....@@ -1,9 +1,6 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
12 /*
23  * Copyright (C) 2016 Cavium, Inc.
3
- *
4
- * This program is free software; you can redistribute it and/or modify
5
- * it under the terms of version 2 of the GNU General Public License
6
- * as published by the Free Software Foundation.
74  */
85 
96 #include <linux/device.h>
....@@ -257,6 +254,7 @@
257254 	const struct firmware *fw_entry;
258255 	struct device *dev = &cpt->pdev->dev;
259256 	struct ucode_header *ucode;
257
+	unsigned int code_length;
260258 	struct microcode *mcode;
261259 	int j, ret = 0;
262260 
....@@ -267,19 +265,20 @@
267265 	ucode = (struct ucode_header *)fw_entry->data;
268266 	mcode = &cpt->mcode[cpt->next_mc_idx];
269267 	memcpy(mcode->version, (u8 *)fw_entry->data, CPT_UCODE_VERSION_SZ);
270
-	mcode->code_size = ntohl(ucode->code_length) * 2;
271
-	if (!mcode->code_size) {
268
+	code_length = ntohl(ucode->code_length);
269
+	if (code_length == 0 || code_length >= INT_MAX / 2) {
272270 		ret = -EINVAL;
273271 		goto fw_release;
274272 	}
273
+	mcode->code_size = code_length * 2;
275274 
276275 	mcode->is_ae = is_ae;
277276 	mcode->core_mask = 0ULL;
278277 	mcode->num_cores = is_ae ? 6 : 10;
279278 
280279 	/*  Allocate DMAable space */
281
-	mcode->code = dma_zalloc_coherent(&cpt->pdev->dev, mcode->code_size,
282
-					  &mcode->phys_base, GFP_KERNEL);
280
+	mcode->code = dma_alloc_coherent(&cpt->pdev->dev, mcode->code_size,
281
+					 &mcode->phys_base, GFP_KERNEL);
283282 	if (!mcode->code) {
284283 		dev_err(dev, "Unable to allocate space for microcode");
285284 		ret = -ENOMEM;