linux-kernel - Re: 2.6.37-rc7: Regression: b43: crashes in hwrng

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Date:	Thu, 30 Dec 2010 21:45:22 +0100
From:	"Mario 'BitKoenig' Holbe" <Mario.Holbe@...Ilmenau.DE>
To:	Larry Finger <Larry.Finger@...inger.net>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	wireless <linux-wireless@...r.kernel.org>,
	b43-dev <b43-dev@...ts.infradead.org>
Subject: Re: 2.6.37-rc7: Regression: b43: crashes in hwrng_register()

On Thu, Dec 30, 2010 at 12:37:21PM -0600, Larry Finger wrote:
> The head of the rng_list is damaged. It is initialized at compile time and
> should be OK. To help discover the order in which hwrng_register() is called,
> apply the attached patch. Run it once with commit 84c164a34ffe67908a installed,
> and once with it reverted.

All right, 3 dmesg excerpts attached...
2.6.37-rc7-vanilla.dmesg:
	2.6.37-rc7 vanilla (i.e. with 84c164a34ffe67908a), crashing
	via-rng is registered first, b43-rng second
2.6.37-rc7-without.dmesg:
	2.6.37-rc7 with 84c164a34ffe67908a reverted, not crashing
	b43-rng is registered first, via-rng second
2.6.37-rc7-without+modprobe.dmesg:
	2.6.37-rc7 with 84c164a34ffe67908a reverted, b43 blacklisted and
	manually modprobed after via-rng, crashing
	via-rng is registered first, b43-rng second

Seems like the crash shows up when b43-rng is registered second, but not
when via-rng is registered second.
Btw.: `cat rng_available' does also not crash when via-rng is registered
second.


regards
   Mario
-- 
> As Luke Leighton said once on samba-ntdom, "now, what was that about
> rebooting?   that was so long ago, i had to look it up with man -k."

View attachment "2.6.37-rc7-vanilla.dmesg" of type "text/plain" (7973 bytes)

View attachment "2.6.37-rc7-without.dmesg" of type "text/plain" (2834 bytes)

View attachment "2.6.37-rc7-without+modprobe.dmesg" of type "text/plain" (6727 bytes)

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