diff mbox

[dpdk-dev,v8,04/19] eal: fix wrong strnlen() return value in 32bit icc

Message ID 1424138896-28618-5-git-send-email-cunming.liang@intel.com (mailing list archive)
State Accepted, archived
Headers show

Commit Message

Cunming Liang Feb. 17, 2015, 2:08 a.m. UTC
The problem is that strnlen() here may return invalid value with 32bit icc.
(actually it returns it’s second parameter,e.g: sysconf(_SC_ARG_MAX)).
It starts to manifest hwen max_len parameter is > 2M and using icc –m32 –O2 (or above).

Suggested-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Signed-off-by: Cunming Liang <cunming.liang@intel.com>
---
 v8 changes:
   keep using strlen for trusted input string

 v7 changes:
   rollback to use strnlen

 v5 changes:
   using strlen instead of strnlen.

 lib/librte_eal/common/eal_common_options.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
diff mbox

Patch

diff --git a/lib/librte_eal/common/eal_common_options.c b/lib/librte_eal/common/eal_common_options.c
index 0b18c55..e227a6a 100644
--- a/lib/librte_eal/common/eal_common_options.c
+++ b/lib/librte_eal/common/eal_common_options.c
@@ -167,7 +167,7 @@  eal_parse_coremask(const char *coremask)
 	if (coremask[0] == '0' && ((coremask[1] == 'x')
 		|| (coremask[1] == 'X')))
 		coremask += 2;
-	i = strnlen(coremask, PATH_MAX);
+	i = strlen(coremask);
 	while ((i > 0) && isblank(coremask[i - 1]))
 		i--;
 	if (i == 0)
@@ -227,7 +227,7 @@  eal_parse_corelist(const char *corelist)
 	/* Remove all blank characters ahead and after */
 	while (isblank(*corelist))
 		corelist++;
-	i = strnlen(corelist, sysconf(_SC_ARG_MAX));
+	i = strlen(corelist);
 	while ((i > 0) && isblank(corelist[i - 1]))
 		i--;
 
@@ -472,7 +472,7 @@  eal_parse_lcores(const char *lcores)
 	/* Remove all blank characters ahead and after */
 	while (isblank(*lcores))
 		lcores++;
-	i = strnlen(lcores, sysconf(_SC_ARG_MAX));
+	i = strlen(lcores);
 	while ((i > 0) && isblank(lcores[i - 1]))
 		i--;