DPDK patches and discussions
 help / color / mirror / Atom feed
From: Reshma Pattan <reshma.pattan@intel.com>
To: dev@dpdk.org
Cc: stephen@networkplumber.org, ferruh.yigit@intel.com,
	Reshma Pattan <reshma.pattan@intel.com>,
	vipin.varghese@intel.com, stable@dpdk.org
Subject: [PATCH v2] app/pdump: check lcore is not the maximum core
Date: Mon, 21 Feb 2022 10:19:44 +0000	[thread overview]
Message-ID: <20220221101944.4216-1-reshma.pattan@intel.com> (raw)
In-Reply-To: <20220218151841.116135-1-reshma.pattan@intel.com>

Check lcore id value is not the maximum core supported.
Using lcore id without this check might cause
out of bound access inside the rte_eal_wait_lcore.

Coverity issue: 375841
Fixes: b2854d5317e8 ("app/pdump: support multi-core capture")
Cc: vipin.varghese@intel.com
Cc: stable@dpdk.org

Signed-off-by: Reshma Pattan <reshma.pattan@intel.com>
---
 app/pdump/main.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/app/pdump/main.c b/app/pdump/main.c
index 04a38e8911..7677a5f8f5 100644
--- a/app/pdump/main.c
+++ b/app/pdump/main.c
@@ -930,12 +930,15 @@ dump_packets(void)
 		return;
 	}
 
-	lcore_id = rte_get_next_lcore(lcore_id, 1, 0);
 
 	for (i = 0; i < num_tuples; i++) {
+		lcore_id = rte_get_next_lcore(lcore_id, 1, 0);
+		if (lcore_id == RTE_MAX_LCORE)
+			rte_exit(EXIT_FAILURE,
+				"Max core limit %u reached for packet capture", lcore_id);
+
 		rte_eal_remote_launch(dump_packets_core,
 				&pdump_t[i], lcore_id);
-		lcore_id = rte_get_next_lcore(lcore_id, 1, 0);
 
 		if (rte_eal_wait_lcore(lcore_id) < 0)
 			rte_exit(EXIT_FAILURE, "failed to wait\n");
-- 
2.27.0


  parent reply	other threads:[~2022-02-21 10:20 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-18 15:18 [PATCH] " Reshma Pattan
2022-02-18 16:27 ` Stephen Hemminger
2022-02-21 10:19 ` Reshma Pattan [this message]
2022-02-22 11:02   ` [PATCH v3] " Reshma Pattan
2022-02-25  9:59     ` Pattan, Reshma
2022-02-25 17:34     ` Stephen Hemminger
2022-02-28  9:58     ` [PATCH v4] " Reshma Pattan
2022-02-28 17:09       ` Stephen Hemminger
2022-03-08 13:47       ` Mcnamara, John
2022-03-08 14:27         ` Thomas Monjalon
2022-03-08 15:03           ` Mcnamara, John

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20220221101944.4216-1-reshma.pattan@intel.com \
    --to=reshma.pattan@intel.com \
    --cc=dev@dpdk.org \
    --cc=ferruh.yigit@intel.com \
    --cc=stable@dpdk.org \
    --cc=stephen@networkplumber.org \
    --cc=vipin.varghese@intel.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).