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From: David Marchand <david.marchand@redhat.com>
To: dev@dpdk.org
Cc: jerinj@marvell.com, skori@marvell.com
Subject: [dpdk-dev] [PATCH v2 3/4] trace: fix metadata dump
Date: Wed, 28 Oct 2020 22:02:48 +0100
Message-ID: <20201028210249.9021-4-david.marchand@redhat.com> (raw)
In-Reply-To: <20201028210249.9021-1-david.marchand@redhat.com>

The ctf metadata is written to the metadata file without any check for
length, so this string must be null terminated.

Fixes: f1a099f5b1f1 ("trace: create CTF TDSL metadata in memory")

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
 lib/librte_eal/common/eal_common_trace_ctf.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/librte_eal/common/eal_common_trace_ctf.c b/lib/librte_eal/common/eal_common_trace_ctf.c
index ac1f64d04b..22615c4e73 100644
--- a/lib/librte_eal/common/eal_common_trace_ctf.c
+++ b/lib/librte_eal/common/eal_common_trace_ctf.c
@@ -37,11 +37,12 @@ meta_copy(char **meta, int *offset, char *str, int rc)
 	if (rc < 0)
 		return rc;
 
-	ptr = realloc(ptr, count + rc);
+	ptr = realloc(ptr, count + rc + 1);
 	if (ptr == NULL)
 		goto free_str;
 
 	memcpy(RTE_PTR_ADD(ptr, count), str, rc);
+	ptr[count + rc] = '\0';
 	count += rc;
 	free(str);
 
-- 
2.23.0


  parent reply	other threads:[~2020-10-28 21:04 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-23  8:00 [dpdk-dev] [PATCH 0/3] Rework CTF event description storage David Marchand
2020-10-23  8:00 ` [dpdk-dev] [PATCH 1/3] trace: fixup CTF event description at registration David Marchand
2020-10-23  8:00 ` [dpdk-dev] [PATCH 2/3] trace: remove size limit on CTF event description David Marchand
2020-10-28  9:06   ` Jerin Jacob
2020-10-23  8:00 ` [dpdk-dev] [PATCH 3/3] trace: make CTF metadata prettier David Marchand
2020-10-27 19:43 ` [dpdk-dev] [PATCH 0/3] Rework CTF event description storage David Marchand
2020-10-28  8:52   ` Jerin Jacob
2020-10-28 13:09     ` David Marchand
2020-10-28 15:17       ` David Marchand
2020-10-28 15:59         ` David Marchand
2020-10-28 21:02 ` [dpdk-dev] [PATCH v2 0/4] " David Marchand
2020-10-28 21:02   ` [dpdk-dev] [PATCH v2 1/4] trace: fixup CTF event description at registration David Marchand
2020-10-29  8:35     ` [dpdk-dev] [EXT] " Sunil Kumar Kori
2020-10-28 21:02   ` [dpdk-dev] [PATCH v2 2/4] trace: remove size limit on CTF event description David Marchand
2020-10-29  8:41     ` [dpdk-dev] [EXT] " Sunil Kumar Kori
2020-10-29  8:51       ` David Marchand
2020-10-29  9:36         ` Sunil Kumar Kori
2020-10-29 10:02           ` David Marchand
2020-10-29 10:31             ` Sunil Kumar Kori
2020-10-28 21:02   ` David Marchand [this message]
2020-10-29  8:36     ` [dpdk-dev] [EXT] [PATCH v2 3/4] trace: fix metadata dump Sunil Kumar Kori
2020-10-28 21:02   ` [dpdk-dev] [PATCH v2 4/4] trace: make CTF metadata prettier David Marchand
2020-10-29  8:37     ` [dpdk-dev] [EXT] " Sunil Kumar Kori
2020-10-29 21:50   ` [dpdk-dev] [PATCH v2 0/4] Rework CTF event description storage David Marchand

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