On Tuesday 12 December 2006 05:06, Ray Lee wrote:
> Hey all, more data on my bcm43xx problem report from a few weeks back.
>
> By random chance I acquired a brain, and decided to rebuild my latest kernel
Congratulations to your decision ;)
> Dec 11 19:34:47 phoenix kernel: [ 57.044691] WARNING at kernel/mutex.c:132 __mutex_lock_common()
> Dec 11 19:34:47 phoenix kernel: [ 57.044694]
I'm not sure what's happening here. Either one of the following
assertions is failing:
038 #define spin_lock_mutex(lock, flags) \
039 do { \
040 struct mutex *l = container_of(lock, struct mutex, wait_lock); \
041 \
042 DEBUG_LOCKS_WARN_ON(in_interrupt()); \
043 local_irq_save(flags); \
044 __raw_spin_lock(&(lock)->raw_lock); \
045 DEBUG_LOCKS_WARN_ON(l->magic != l); \
046 } while (0)
Which kernel are you using?
There is some locking breakage in latest kernels with softmac.
I attached the fixes for the known bugs.
From: Michael Buesch <[email protected]>
To: [email protected]
Date: Sun, 10 Dec 2006 18:39:28 +0100
Message-Id: <[email protected]>
Cc: Andrew Morton <[email protected]>, Johannes Berg <[email protected]>, "John W. Linville" <[email protected]>, [email protected]
Subject: ieee80211softmac: Fix mutex_lock at exit of ieee80211_softmac_get_genie
From: Ulrich Kunitz <[email protected]>
ieee80211softmac_wx_get_genie locks the associnfo mutex at
function exit. This patch fixes it. The patch is against Linus'
tree (commit af1713e0).
Signed-off-by: Ulrich Kunitz <[email protected]>
Signed-off-by: Michael Buesch <[email protected]>
Signed-off-by: Chris Wright <[email protected]>
---
net/ieee80211/softmac/ieee80211softmac_wx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- linux-2.6.19.1.orig/net/ieee80211/softmac/ieee80211softmac_wx.c
+++ linux-2.6.19.1/net/ieee80211/softmac/ieee80211softmac_wx.c
@@ -463,7 +463,7 @@ ieee80211softmac_wx_get_genie(struct net
err = -E2BIG;
}
spin_unlock_irqrestore(&mac->lock, flags);
- mutex_lock(&mac->associnfo.mutex);
+ mutex_unlock(&mac->associnfo.mutex);
return err;
}
From: Ulrich Kunitz <[email protected]>
The signature of work functions changed recently from a context
pointer to the work structure pointer. This caused a problem in
the ieee80211softmac code, because the ieee80211softmac_assox_work
function has been called directly with a parameter explicitly
casted to (void*). This compiled correctly but resulted in a
softlock, because mutex_lock was called with the wrong memory
address. The patch fixes the problem. Another issue was a wrong
call of the schedule_work function. Softmac works again and this
fixes the problem I mentioned earlier in the zd1211rw rx tasklet
patch. The patch is against Linus' tree (commit af1713e0).
Signed-off-by: Ulrich Kunitz <[email protected]>
Acked-by: Michael Buesch <[email protected]>
Signed-off-by: Larry Finger <[email protected]>
---
John,
This patch should be pushed upstream to 2.6.20. At the moment, the work
struct changes have not yet propagated to wireless-2.6. When they do,
it will be needed there as well.
Larry
net/ieee80211/softmac/ieee80211softmac_assoc.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/ieee80211/softmac/ieee80211softmac_assoc.c b/net/ieee80211/softmac/ieee80211softmac_assoc.c
index eec1a1d..a824852 100644
--- a/net/ieee80211/softmac/ieee80211softmac_assoc.c
+++ b/net/ieee80211/softmac/ieee80211softmac_assoc.c
@@ -167,7 +167,7 @@ static void
ieee80211softmac_assoc_notify_scan(struct net_device *dev, int event_type, void *context)
{
struct ieee80211softmac_device *mac = ieee80211_priv(dev);
- ieee80211softmac_assoc_work((void*)mac);
+ ieee80211softmac_assoc_work(&mac->associnfo.work.work);
}
static void
@@ -177,7 +177,7 @@ ieee80211softmac_assoc_notify_auth(struc
switch (event_type) {
case IEEE80211SOFTMAC_EVENT_AUTHENTICATED:
- ieee80211softmac_assoc_work((void*)mac);
+ ieee80211softmac_assoc_work(&mac->associnfo.work.work);
break;
case IEEE80211SOFTMAC_EVENT_AUTH_FAILED:
case IEEE80211SOFTMAC_EVENT_AUTH_TIMEOUT:
@@ -438,7 +438,7 @@ ieee80211softmac_try_reassoc(struct ieee
spin_lock_irqsave(&mac->lock, flags);
mac->associnfo.associating = 1;
- schedule_work(&mac->associnfo.work);
+ schedule_delayed_work(&mac->associnfo.work, 0);
spin_unlock_irqrestore(&mac->lock, flags);
}
--
Greetings Michael.
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