From 42dc433e658ae39e8dd614f75785aadf0e363d9d Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Thu, 25 Oct 2012 21:41:56 +0000 Subject: [PATCH] ath9k: fix a stale bf->bf_next pointer, potentially leading to double-free errors and "Failed to stop Tx DMA" errors SVN-Revision: 33938 --- .../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 0000000000..95ed6876f1 --- /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); -- 2.30.2