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add a fix for memleaks caused by failed memory allocations

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@10417 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2008-02-08 05:13:06 +00:00
parent 173844aad7
commit 6517ef0aa1
1 changed files with 44 additions and 0 deletions
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44
package/madwifi/patches/331-memory_alloc.patch Normal file
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@ -0,0 +1,44 @@
Index: madwifi-trunk-r3314/ath/if_ath.c
===================================================================
--- madwifi-trunk-r3314.orig/ath/if_ath.c 2008-02-08 04:11:11.775823441 +0100
+++ madwifi-trunk-r3314/ath/if_ath.c 2008-02-08 05:46:16.761139918 +0100
@@ -3308,17 +3308,18 @@
* without affecting any other bridge ports. */
if (skb_cloned(skb)) {
/* Remember the original SKB so we can free up our references */
- struct sk_buff *skb_orig = skb;
- skb = skb_copy(skb, GFP_ATOMIC);
- if (skb == NULL) {
+ struct sk_buff *skb_new;
+ skb_new = skb_copy(skb, GFP_ATOMIC);
+ if (skb_new == NULL) {
DPRINTF(sc, ATH_DEBUG_XMIT,
"Dropping; skb_copy failure.\n");
/* No free RAM, do not requeue! */
goto hardstart_fail;
}
- ieee80211_skb_copy_noderef(skb_orig, skb);
- ieee80211_dev_kfree_skb(&skb_orig);
- }
+ ieee80211_skb_copy_noderef(skb, skb_new);
+ ieee80211_dev_kfree_skb(&skb);
+ skb = skb_new;
+ }
eh = (struct ether_header *)skb->data;
#ifdef ATH_SUPERG_FF
@@ -3584,11 +3585,13 @@
*/
error = ath_tx_start(dev, SKB_CB(skb)->ni, bf, skb, 0);
if (error)
- goto bad;
+ return error;
sc->sc_stats.ast_tx_mgmt++;
return 0;
bad:
+ if (skb)
+ ieee80211_dev_kfree_skb(&skb);
ath_return_txbuf(sc, &bf);
return error;
}