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openwrt-xburst/package/mac80211/patches/568-ath9k_fix_stale_pointer.patch
nbd 505600a82e ath9k: fix a stale bf->bf_next pointer, potentially leading to double-free errors and "Failed to stop Tx DMA" errors
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33938 3c298f89-4303-0410-b956-a3cf2f4a3e73
2012-10-25 21:41:56 +00:00

19 lines
569 B
Diff

--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -312,6 +312,7 @@ static struct ath_buf *ath_tx_get_buffer
}
bf = list_first_entry(&sc->tx.txbuf, struct ath_buf, list);
+ bf->bf_next = NULL;
list_del(&bf->list);
spin_unlock_bh(&sc->tx.txbuflock);
@@ -1774,6 +1775,7 @@ static void ath_tx_send_normal(struct at
list_add_tail(&bf->list, &bf_head);
bf->bf_state.bf_type = 0;
+ bf->bf_next = NULL;
bf->bf_lastbf = bf;
ath_tx_fill_desc(sc, bf, txq, fi->framelen);
ath_tx_txqaddbuf(sc, txq, &bf_head, false);