linux-kernel - Re: [PATCH v4 07/10] arm64: select HAVE_SHARED_GPIOS for ARCH

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Message-ID: <CAMRc=MesD5HchG_hfvN3H5ayu8gX_OvSsZQ4UO4f27gx1rRzSA@mail.gmail.com>
Date: Tue, 18 Nov 2025 15:13:49 +0100
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Mark Brown <broonie@...nel.org>
Cc: Kees Cook <kees@...nel.org>, Mika Westerberg <westeri@...nel.org>, 
	Dmitry Torokhov <dmitry.torokhov@...il.com>, Andrew Morton <akpm@...ux-foundation.org>, 
	Linus Walleij <linus.walleij@...aro.org>, Manivannan Sadhasivam <mani@...nel.org>, 
	Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Saravana Kannan <saravanak@...gle.com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
	Andy Shevchenko <andy@...nel.org>, Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>, 
	Srinivas Kandagatla <srini@...nel.org>, Liam Girdwood <lgirdwood@...il.com>, Jaroslav Kysela <perex@...ex.cz>, 
	Takashi Iwai <tiwai@...e.com>, Alexey Klimov <alexey.klimov@...aro.org>, 
	Bjorn Andersson <andersson@...nel.org>, Konrad Dybcio <konradybcio@...nel.org>, 
	linux-hardening@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-gpio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
	linux-sound@...r.kernel.org, linux-arm-msm@...r.kernel.org, 
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>, Aishwarya.TCV@....com
Subject: Re: [PATCH v4 07/10] arm64: select HAVE_SHARED_GPIOS for ARCH_QCOM

On Tue, Nov 18, 2025 at 3:06 PM Mark Brown <broonie@...nel.org> wrote:
>
> On Wed, Nov 12, 2025 at 02:55:36PM +0100, Bartosz Golaszewski wrote:
> > From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> >
> > Some qualcomm platforms use shared GPIOs. Enable support for them by
> > selecting the Kconfig switch provided by GPIOLIB.
>
> This is causing boot failures for me in -next on the ARM FVP with
> defconfig, the select affects all platforms not just the Qualcomm ones.
> We get:
>
> [    0.137360] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000058
>
> ...
>
> [    0.140979] Call trace:
> [    0.141037]  gpio_shared_of_traverse+0x48/0x480 (P)
> [    0.141187]  gpio_shared_init+0x28/0x14c
> [    0.141314]  do_one_initcall+0x60/0x1d4
> [    0.141446]  kernel_init_freeable+0x24c/0x2c8
> [    0.141607]  kernel_init+0x20/0x140
>
> Full log:
>
>    https://lava.sirena.org.uk/scheduler/job/2101484#L692
>

Hi Mark!

Thanks for the heads-up. I'll try to fix it ASAP to avoid a revert.

I can't open the link:

500 Internal Server Error

FATAL: remaining connection slots are reserved for non-replication
superuser connections

Oops, something has gone wrong!

Any chance you could get the offending line out of this stack trace?

Bartosz