From 4812edf613c49689d40d9dd35b1a90377585d2a8 Mon Sep 17 00:00:00 2001 From: nbd Date: Thu, 25 Oct 2012 21:42:19 +0000 Subject: ath9k: fix a stale bf->bf_next pointer, potentially leading to double-free errors and "Failed to stop Tx DMA" errors Backport of r33938 git-svn-id: svn://svn.openwrt.org/openwrt/branches/attitude_adjustment@33939 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../mac80211/patches/568-ath9k_fix_stale_pointer.patch | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 package/mac80211/patches/568-ath9k_fix_stale_pointer.patch diff --git a/package/mac80211/patches/568-ath9k_fix_stale_pointer.patch b/package/mac80211/patches/568-ath9k_fix_stale_pointer.patch new file mode 100644 index 000000000..95ed6876f --- /dev/null +++ b/package/mac80211/patches/568-ath9k_fix_stale_pointer.patch @@ -0,0 +1,18 @@ +--- 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); -- cgit v1.2.3