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From: "Miles Lane" <miles.lane@gmail.com>
To: "Larry Finger" <Larry.Finger@lwfinger.net>
Cc: "Michael Buesch" <mb@bu3sch.de>,
	"Vegard Nossum" <vegard.nossum@gmail.com>,
	"Andrew Morton" <akpm@linux-foundation.org>,
	"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
	linux-wireless <linux-wireless@vger.kernel.org>,
	"FUJITA Tomonori" <fujita.tomonori@lab.ntt.co.jp>
Subject: Re: BUG: NULL pointer dereference at 00000000 -- IP: [<f8e783d5>] :b43:b43_dma_mapping_error+0x16/0x155
Date: Wed, 11 Jun 2008 01:57:30 -0400	[thread overview]
Message-ID: <a44ae5cd0806102257x61596782tc523de8c866cb58b@mail.gmail.com> (raw)
In-Reply-To: <484F5DB2.4050705@lwfinger.net>

> The line that fails is
>
> if (unlikely(dma_mapping_error(ring->dev->dev->dma_dev, addr)))
>
> The value at 0x58(%eax) is zero, which corresponds to the "struct b43_wldev
> *dev" line in struct b43_dmaring. In other words, ring->dev is NULL, which
> causes the error. I'll leave it to FUJITA Tomonori to figure out why.

Thanks all,

I might have time in the morning to test one more patch, otherwise I
will be back in about three weeks.

Best wishes,

        Miles

  reply	other threads:[~2008-06-11  5:57 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-06-10 14:09 Miles Lane
2008-06-10 14:23 ` Michael Buesch
2008-06-10 14:29   ` Vegard Nossum
2008-06-10 14:34     ` Michael Buesch
2008-06-10 14:37       ` Michael Buesch
2008-06-10 14:42         ` Miles Lane
2008-06-10 15:09           ` Vegard Nossum
2008-06-10 14:42         ` Vegard Nossum
2008-06-10 14:50           ` Michael Buesch
2008-06-10 22:09             ` Miles Lane
2008-06-10 22:15               ` Michael Buesch
2008-06-10 22:29                 ` Miles Lane
2008-06-10 23:15               ` Larry Finger
2008-06-11  1:57                 ` Miles Lane
2008-06-11  5:08                   ` Larry Finger
2008-06-11  5:57                     ` Miles Lane [this message]
2008-06-12  5:18                       ` FUJITA Tomonori
2008-06-11  0:58             ` FUJITA Tomonori
2008-06-11 10:05               ` Michael Buesch
2008-06-11 12:23                 ` Larry Finger
2008-06-12  5:18                 ` FUJITA Tomonori
2008-06-12  9:14                   ` Michael Buesch

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