While deleting the elements from the linked list, TAILQ_FOREACH causes read from the freed pointer. Fixes the issue by using for loop instead of TAILQ_FOREACH.
Coverity issue: 302867 Fixes: bef50bcb1c47 ("net/softnic: implement start and stop") Signed-off-by: Jasvinder Singh <jasvinder.si...@intel.com> Acked-by: Cristian Dumitrescu <cristian.dumitre...@intel.com> --- drivers/net/softnic/rte_eth_softnic_swq.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/softnic/rte_eth_softnic_swq.c b/drivers/net/softnic/rte_eth_softnic_swq.c index 1944fbb..a1f1899 100644 --- a/drivers/net/softnic/rte_eth_softnic_swq.c +++ b/drivers/net/softnic/rte_eth_softnic_swq.c @@ -36,9 +36,11 @@ 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, *swq_next; + + for (swq = TAILQ_FIRST(&p->swq_list); swq != NULL; swq = swq_next) { + swq_next = TAILQ_NEXT(swq, node); - TAILQ_FOREACH(swq, &p->swq_list, node) { if ((strncmp(swq->name, "RXQ", strlen("RXQ")) == 0) || (strncmp(swq->name, "TXQ", strlen("TXQ")) == 0)) continue; -- 2.9.3