[dpdk-dev] [PATCH] eal: copy optarg when parsing mempool ops name
Andrew Rybchenko
arybchenko at solarflare.com
Fri May 4 12:31:54 CEST 2018
From: Ivan Malov <ivan.malov at oktetlabs.ru>
The code aimed to pick and remember the value of
mempool ops name from EAL command line arguments does not
copy the string and remembers the pointer provided
by getopt_long() directly. The latter could be clobbered
later and result in reading wrong mbuf pool ops name
by rte_mempool library.
Typically, this flaw could be avoided by using strdup()
to remember the string value of the option.
Fixes: a103a97e7191 ("eal: allow user to override default mempool driver")
Cc: Santosh Shukla <santosh.shukla at caviumnetworks.com>
Cc: stable at dpdk.org
Signed-off-by: Ivan Malov <ivan.malov at oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko at solarflare.com>
---
lib/librte_eal/bsdapp/eal/eal.c | 3 ++-
lib/librte_eal/linuxapp/eal/eal.c | 3 ++-
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/lib/librte_eal/bsdapp/eal/eal.c b/lib/librte_eal/bsdapp/eal/eal.c
index a63f11f31..3ba328ad6 100644
--- a/lib/librte_eal/bsdapp/eal/eal.c
+++ b/lib/librte_eal/bsdapp/eal/eal.c
@@ -380,7 +380,8 @@ eal_parse_args(int argc, char **argv)
switch (opt) {
case OPT_MBUF_POOL_OPS_NAME_NUM:
- internal_config.user_mbuf_pool_ops_name = optarg;
+ internal_config.user_mbuf_pool_ops_name =
+ strdup(optarg);
break;
case 'h':
eal_usage(prgname);
diff --git a/lib/librte_eal/linuxapp/eal/eal.c b/lib/librte_eal/linuxapp/eal/eal.c
index e2c0bd649..34d94121a 100644
--- a/lib/librte_eal/linuxapp/eal/eal.c
+++ b/lib/librte_eal/linuxapp/eal/eal.c
@@ -593,7 +593,8 @@ eal_parse_args(int argc, char **argv)
break;
case OPT_MBUF_POOL_OPS_NAME_NUM:
- internal_config.user_mbuf_pool_ops_name = optarg;
+ internal_config.user_mbuf_pool_ops_name =
+ strdup(optarg);
break;
default:
--
2.14.1
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