> > the interface goes up well, but I get an oops as soon as I run hostapd,
> > seems something with debugfs. This shows up in dmesg, let me know if you
> > need any more info.
Bas, can you reproduce this issue? Could you try the patch below?
johannes
---
net/mac80211/debugfs_key.c | 21 ++++++++++++++++++---
1 file changed, 18 insertions(+), 3 deletions(-)
--- everything.orig/net/mac80211/debugfs_key.c 2008-04-28 20:15:42.000000000 +0200
+++ everything/net/mac80211/debugfs_key.c 2008-04-28 20:15:44.000000000 +0200
@@ -255,14 +255,29 @@ void ieee80211_debugfs_key_remove(struct
void ieee80211_debugfs_key_add_default(struct ieee80211_sub_if_data *sdata)
{
char buf[50];
+ struct ieee80211_key *key;
if (!sdata->debugfsdir)
return;
- sprintf(buf, "../keys/%d", sdata->default_key->debugfs.cnt);
- sdata->debugfs.default_key =
- debugfs_create_symlink("default_key", sdata->debugfsdir, buf);
+ rcu_read_lock();
+ key = rcu_dereference(sdata->default_key);
+ if (key) {
+ sprintf(buf, "../keys/%d", key->debugfs.cnt);
+ sdata->debugfs.default_key =
+ debugfs_create_symlink("default_key",
+ sdata->debugfsdir, buf);
+ } else {
+ /*
+ * Oops. No default key, let's remove the debugfs entry
+ * This can happen if the workqueue is too slow.
+ */
+ debugfs_remove(sdata->debugfs.default_key);
+ sdata->debugfs.default_key = NULL;
+ }
+ rcu_read_unlock();
}
+
void ieee80211_debugfs_key_remove_default(struct ieee80211_sub_if_data *sdata)
{
if (!sdata)
--
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