[dpdk-stable] [PATCH] examples/exception_path: fix possible out-of-bounds read
Bruce Richardson
bruce.richardson at intel.com
Mon Jul 16 18:03:47 CEST 2018
When printing out stats from the exception_path app, all possible
lcore_ids are iterated. However, the app only supports up to 64 cores.
To prevent possible errors, and to remove coverity warnings,
explicitly check for out-of-range lcore ids before printing.
Coverity issue: 268335
Fixes: af75078fece3 ("first public release")
Cc: stable at dpdk.org
Signed-off-by: Bruce Richardson <bruce.richardson at intel.com>
---
examples/exception_path/main.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/examples/exception_path/main.c b/examples/exception_path/main.c
index 0b59f6b3f..440422bc8 100644
--- a/examples/exception_path/main.c
+++ b/examples/exception_path/main.c
@@ -131,6 +131,9 @@ print_stats(void)
" Lcore Port RX TX Dropped on TX\n"
"------- ------ ------------ ------------ ---------------\n");
RTE_LCORE_FOREACH(i) {
+ /* limit ourselves to application supported cores only */
+ if (i >= APP_MAX_LCORE)
+ break;
printf("%6u %7u %13"PRIu64" %13"PRIu64" %16"PRIu64"\n",
i, (unsigned)port_ids[i],
lcore_stats[i].rx, lcore_stats[i].tx,
--
2.17.1
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