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authornbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2012-10-25 21:41:56 +0000
committernbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2012-10-25 21:41:56 +0000
commit505600a82ed69053baf4be0ffb67dba22b4f3b5d (patch)
tree24b7956eb2a6ae63ae998befc70a2bcd1185e24d /package/mac80211/patches
parent32f81d1ba7a656b76e0beeb0aea38216988a3a3a (diff)
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
Diffstat (limited to 'package/mac80211/patches')
-rw-r--r--package/mac80211/patches/568-ath9k_fix_stale_pointer.patch18
1 files changed, 18 insertions, 0 deletions
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);