* [dpdk-stable] [PATCH] eal: reset driver name pointer on failure
@ 2017-01-24 20:26 Emmanuel Roullit
2017-01-29 22:35 ` [dpdk-stable] [dpdk-dev] " Thomas Monjalon
0 siblings, 1 reply; 2+ messages in thread
From: Emmanuel Roullit @ 2017-01-24 20:26 UTC (permalink / raw)
To: david.marchand; +Cc: dev, stable
The pointer set by strdup() needs to be cleared on failure to avoid a
potential double-free from the caller.
Found with clang static analysis:
lib/librte_eal/common/eal_common_devargs.c:123:2:
warning: Attempt to free released memory
free(buf);
^~~~~~~~~
Fixes: 3fe2e5fec82b ("eal: fix argument parsing check")
Signed-off-by: Emmanuel Roullit <emmanuel.roullit@gmail.com>
---
lib/librte_eal/common/eal_common_devargs.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/lib/librte_eal/common/eal_common_devargs.c b/lib/librte_eal/common/eal_common_devargs.c
index e403717be..ffa8ad96f 100644
--- a/lib/librte_eal/common/eal_common_devargs.c
+++ b/lib/librte_eal/common/eal_common_devargs.c
@@ -72,6 +72,7 @@ rte_eal_parse_devargs_str(const char *devargs_str,
if (*drvargs == NULL) {
free(*drvname);
+ *drvname = NULL;
return -1;
}
return 0;
--
2.11.0
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [dpdk-stable] [dpdk-dev] [PATCH] eal: reset driver name pointer on failure
2017-01-24 20:26 [dpdk-stable] [PATCH] eal: reset driver name pointer on failure Emmanuel Roullit
@ 2017-01-29 22:35 ` Thomas Monjalon
0 siblings, 0 replies; 2+ messages in thread
From: Thomas Monjalon @ 2017-01-29 22:35 UTC (permalink / raw)
To: Emmanuel Roullit; +Cc: dev, stable
2017-01-24 21:26, Emmanuel Roullit:
> The pointer set by strdup() needs to be cleared on failure to avoid a
> potential double-free from the caller.
>
> Found with clang static analysis:
> lib/librte_eal/common/eal_common_devargs.c:123:2:
> warning: Attempt to free released memory
> free(buf);
> ^~~~~~~~~
>
> Fixes: 3fe2e5fec82b ("eal: fix argument parsing check")
The real bug origin is:
Fixes: 0fe11ec592b2 ("eal: add vdev init and uninit")
> Signed-off-by: Emmanuel Roullit <emmanuel.roullit@gmail.com>
Applied, thanks
^ permalink raw reply [flat|nested] 2+ messages in thread
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