lkml.org 
[lkml]   [2002]   [Mar]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
SubjectRe: [PATCH] 2.4.18 Eicon ISDN driver fix.
On Thu, 28 Feb 2002, Marcelo Tosatti wrote:
>
>
> On Wed, 27 Feb 2002, Armin Schindler wrote:
>
> > The patch below fixes the race condition with copy_to_user and will
> > not introduce a new race. What can happen is that two reader-processes
> > may get mixed-up messages, but more than one reader isn't allowed here
> > anyway.
> >
> > Please apply this patch to 2.4 and 2.2, it works for both.
>
> Armin,
>
> Your patch does not apply cleanly against my tree.
>
> Please regenerate it.

Hi Marcelo,

I don't why the patch does not apply, maybe whitespace problems ?
Okay, here it is again. I tested it with 2.4.18.

Thanks Armin


diff -Nurb pristine/drivers/isdn/eicon/eicon_mod.c linux/drivers/isdn/eicon/eicon_mod.c
--- pristine/drivers/isdn/eicon/eicon_mod.c Fri Dec 21 18:41:54 2001
+++ linux/drivers/isdn/eicon/eicon_mod.c Fri Mar 1 08:07:44 2002
@@ -665,8 +665,11 @@
else
cnt = skb->len;

- if (user)
+ if (user) {
+ spin_unlock_irqrestore(&eicon_lock, flags);
copy_to_user(p, skb->data, cnt);
+ spin_lock_irqsave(&eicon_lock, flags);
+ }
else
memcpy(p, skb->data, cnt);


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:21    [W:0.075 / U:2.180 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site