[v2] net/softnic: fix memory illegal access
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Commit Message
While deleting the elements from the linked list, TAILQ_FOREACH causes
read from the freed pointer. Fixes the issue by using TAILQ_FOREACH_SAFE
instead.
Coverity issue: 302867
Fixes: bef50bcb1c47 ("net/softnic: implement start and stop")
Signed-off-by: Jasvinder Singh <jasvinder.singh@intel.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
---
drivers/net/softnic/rte_eth_softnic_swq.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
Comments
On 7/20/2018 12:05 PM, Jasvinder Singh wrote:
> While deleting the elements from the linked list, TAILQ_FOREACH causes
> read from the freed pointer. Fixes the issue by using TAILQ_FOREACH_SAFE
> instead.
>
> Coverity issue: 302867
> Fixes: bef50bcb1c47 ("net/softnic: implement start and stop")
>
> Signed-off-by: Jasvinder Singh <jasvinder.singh@intel.com>
> Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
Applied to dpdk-next-net/master, thanks.
@@ -6,6 +6,7 @@
#include <string.h>
#include <rte_string_fns.h>
+#include <rte_tailq.h>
#include "rte_eth_softnic_internals.h"
@@ -36,9 +37,9 @@ softnic_swq_free(struct pmd_internals *p)
void
softnic_softnic_swq_free_keep_rxq_txq(struct pmd_internals *p)
{
- struct softnic_swq *swq;
+ struct softnic_swq *swq, *tswq;
- TAILQ_FOREACH(swq, &p->swq_list, node) {
+ TAILQ_FOREACH_SAFE(swq, &p->swq_list, node, tswq) {
if ((strncmp(swq->name, "RXQ", strlen("RXQ")) == 0) ||
(strncmp(swq->name, "TXQ", strlen("TXQ")) == 0))
continue;