net/smc: use after free fix in smc_wr_tx_put_slot()

[uclinux-h8/linux.git] / net / smc / smc_wr.c

diff --git a/net/smc/smc_wr.c b/net/smc/smc_wr.c
index 3c458d2..c269475 100644 (file)
--- a/net/smc/smc_wr.c
+++ b/net/smc/smc_wr.c
@@ -215,12 +215,14 @@ int smc_wr_tx_put_slot(struct smc_link *link,
 
        pend = container_of(wr_pend_priv, struct smc_wr_tx_pend, priv);
        if (pend->idx < link->wr_tx_cnt) {
+               u32 idx = pend->idx;
+
                /* clear the full struct smc_wr_tx_pend including .priv */
                memset(&link->wr_tx_pends[pend->idx], 0,
                       sizeof(link->wr_tx_pends[pend->idx]));
                memset(&link->wr_tx_bufs[pend->idx], 0,
                       sizeof(link->wr_tx_bufs[pend->idx]));
-               test_and_clear_bit(pend->idx, link->wr_tx_mask);
+               test_and_clear_bit(idx, link->wr_tx_mask);
                return 1;
        }