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From: erik quanstrom <quanstro@quanstro.net>
To: cinap_lenrek@gmx.de, 9fans@9fans.net
Subject: Re: [9fans] devmnt crash, fix.
Date: Thu, 23 Aug 2012 12:24:59 -0400	[thread overview]
Message-ID: <d1c7d7362524b9375ba8e19c51dfd265@kw.quanstro.net> (raw)
In-Reply-To: <d67c46cd156233f61e9381a31c62269d@rei2.9hal>

> 	sleep(&up->waitr, haswaitq, up);
>
> 	lock(&up->exl);
> 	wq = up->waitq;
> 	up->waitq = wq->next;	<-- wq == nil, boom! its gone!
> 	up->nwait--;
> 	unlock(&up->exl);
>
>
> if sleep returns or is spuriously woken up even tho up->waitq == nil.

ah, right.  looks like a bug.

- erik



  reply	other threads:[~2012-08-23 16:24 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-22 18:53 erik quanstrom
2012-08-22 19:09 ` cinap_lenrek
2012-08-22 19:12 ` cinap_lenrek
2012-08-22 19:53 ` cinap_lenrek
2012-08-22 22:26   ` erik quanstrom
2012-08-22 23:30 ` cinap_lenrek
2012-08-23  1:53   ` erik quanstrom
2012-08-23  9:47     ` cinap_lenrek
2012-08-23 13:27       ` erik quanstrom
2012-08-23 15:02         ` cinap_lenrek
2012-08-23 15:39         ` Bakul Shah
2012-08-23 15:48           ` erik quanstrom
2012-08-23 15:53           ` cinap_lenrek
2012-08-23 16:06             ` erik quanstrom
2012-08-23 16:18               ` cinap_lenrek
2012-08-23 16:24                 ` erik quanstrom [this message]
2012-08-23 16:47                   ` Charles Forsyth
2012-08-23 17:01                     ` cinap_lenrek
2012-08-23 17:53                     ` Bakul Shah
2012-08-23 18:03                       ` erik quanstrom
     [not found]                   ` <CAOw7k5ii5PoYZnEbDeUuhR9GsgEEGt7i+XTQm7FR9+r=ENg=xw@mail.gmail.c>
2012-08-23 17:09                     ` erik quanstrom

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