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

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Date:	Thu, 30 Dec 2010 02:20:03 +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 Wed, Dec 29, 2010 at 06:30:40PM -0600, Larry Finger wrote:
> On 12/29/2010 01:54 PM, Mario 'BitKoenig' Holbe wrote:
> > I did 2 things:
> > 1. I (manually) reverted 84c164a34ffe67908a932a2d641ec1a80c2d5435 from
> >    2.6.37-rc7: The crash disappears, b43 is useable.
> > 2. I added 84c164a34ffe67908a932a2d641ec1a80c2d5435 to 2.6.36.2: The
> >    crash shows up as with vanilla 2.6.37-rc7.
> 
> Please show the output of "egrep "B43|RNG|RANDOM" .config".

CONFIG_B43=m
CONFIG_B43_PCI_AUTOSELECT=y
CONFIG_B43_PCICORE_AUTOSELECT=y
CONFIG_B43_PCMCIA=y
CONFIG_B43_SDIO=y
CONFIG_B43_PIO=y
CONFIG_B43_PHY_LP=y
CONFIG_B43_LEDS=y
CONFIG_B43_HWRNG=y
# CONFIG_B43_DEBUG is not set
CONFIG_B43LEGACY=m
CONFIG_B43LEGACY_PCI_AUTOSELECT=y
CONFIG_B43LEGACY_PCICORE_AUTOSELECT=y
CONFIG_B43LEGACY_LEDS=y
CONFIG_B43LEGACY_HWRNG=y
CONFIG_B43LEGACY_DEBUG=y
CONFIG_B43LEGACY_DMA=y
CONFIG_B43LEGACY_PIO=y
CONFIG_B43LEGACY_DMA_AND_PIO_MODE=y
# CONFIG_B43LEGACY_DMA_MODE is not set
# CONFIG_B43LEGACY_PIO_MODE is not set
CONFIG_HW_RANDOM=m
CONFIG_HW_RANDOM_TIMERIOMEM=m
CONFIG_HW_RANDOM_INTEL=m
CONFIG_HW_RANDOM_AMD=m
CONFIG_HW_RANDOM_GEODE=m
CONFIG_HW_RANDOM_VIA=m
CONFIG_HW_RANDOM_VIRTIO=m
CONFIG_SSB_B43_PCI_BRIDGE=y
CONFIG_CRYPTO_RNG=m
CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_ANSI_CPRNG=m
CONFIG_CRYPTO_DEV_HIFN_795X_RNG=y

> It should not matter, but please try the attached patch.

It will surely not matter: if CONFIG_B43_HWRNG would not have been
defined, hwrng_register() would not have been reached in the dump from
my first mail.

If you really like me to try that patch, I'll do so when I'm awake again
and will then answer you that nothing has changed :)


Mario
-- 
It is a capital mistake to theorize before one has data.
Insensibly one begins to twist facts to suit theories instead of theories
to suit facts.                   -- Sherlock Holmes by Arthur Conan Doyle

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