[dpdk-dev] [PATCH] test/compress: fix buffer overflow bug

[Rebecca Troy]

Fixes stack buffer overflow bug in compressdev autotest, which
was caused by the use of buf_idx in the debug logs. Originally, buf_idx
was treated as an array instead of the reference of an integar.
This was fixed by replacing the use of buf_idx[priv_data->orig_idx] with
the variable i.

Fixes: 466a2c4bb5f4 ("test/compress: improve debug logs")
Fixes: 6bbc5a923625 ("test/compress: refactor unit tests")

Cc: fiona.trahe at intel.com
Cc: arturx.trybula at intel.com
Cc: stable at dpdk.org

Signed-off-by: Rebecca Troy <rebecca.troy at intel.com>
---
 app/test/test_compressdev.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/app/test/test_compressdev.c b/app/test/test_compressdev.c
index 0571c17ecb..a1b9f06250 100644
--- a/app/test/test_compressdev.c
+++ b/app/test/test_compressdev.c
@@ -1411,7 +1411,6 @@ test_deflate_comp_finalize(const struct interim_data_params *int_data,
 	/* from int_data: */
 	unsigned int num_xforms = int_data->num_xforms;
 	struct rte_comp_xform **compress_xforms = int_data->compress_xforms;
-	uint16_t *buf_idx = int_data->buf_idx;
 	unsigned int num_bufs = int_data->num_bufs;
 
 	/* from test_priv_data: */
@@ -1442,7 +1441,7 @@ test_deflate_comp_finalize(const struct interim_data_params *int_data,
 
 		RTE_LOG(DEBUG, USER1, "Buffer %u compressed by %s from %u to"
 			" %u bytes (level = %d, huffman = %s)\n",
-			buf_idx[priv_data->orig_idx], engine,
+			i, engine,
 			ops_processed[i]->consumed, ops_processed[i]->produced,
 			compress_xform->level,
 			huffman_type_strings[huffman_type]);
@@ -1734,7 +1733,6 @@ test_deflate_decomp_finalize(const struct interim_data_params *int_data,
 	static unsigned int step;
 
 	/* from int_data: */
-	uint16_t *buf_idx = int_data->buf_idx;
 	unsigned int num_bufs = int_data->num_bufs;
 	const char * const *test_bufs = int_data->test_bufs;
 	struct rte_comp_xform **compress_xforms = int_data->compress_xforms;
@@ -1766,7 +1764,7 @@ test_deflate_decomp_finalize(const struct interim_data_params *int_data,
 			strlcpy(engine, "pmd", sizeof(engine));
 		RTE_LOG(DEBUG, USER1,
 			"Buffer %u decompressed by %s from %u to %u bytes\n",
-			buf_idx[priv_data->orig_idx], engine,
+			i, engine,
 			ops_processed[i]->consumed, ops_processed[i]->produced);
 		ops[i] = NULL;
 	}
-- 
2.25.1