From: Maxime Ripard <maxime@cerno.tech>
To: "David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Arnd Bergmann <arnd@arndb.de>, Olof Johansson <olof@lixom.net>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Daniel Vetter <daniel.vetter@intel.com>,
David Airlie <airlied@linux.ie>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Thomas Zimmermann <tzimmermann@suse.de>,
Christoph Lameter <cl@linux.com>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Andrew Morton <akpm@linux-foundation.org>,
Vlastimil Babka <vbabka@suse.cz>,
Roman Gushchin <roman.gushchin@linux.dev>
Cc: Martin Roukala <martin.roukala@mupuf.org>,
netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
dri-devel@lists.freedesktop.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: RaspberryPi4 Panic in net_ns_init()
Date: Mon, 5 Sep 2022 13:18:32 +0200 [thread overview]
Message-ID: <20220905111832.73nqtlzpiuwpj7lx@houat> (raw)
In-Reply-To: <20220831144205.iirdun6bf3j5v6q4@houat>
On Wed, Aug 31, 2022 at 04:42:05PM +0200, Maxime Ripard wrote:
> Sorry for the fairly broad list of recipients, I'm not entirely sure
> where the issue lies exactly, and it seems like multiple areas are
> involved.
>
> Martin reported me an issue discovered with the VC4 DRM driver that
> would prevent the RaspberryPi4 from booting entirely. At boot, and
> apparently before the console initialization, the board would just die.
>
> It first appeared when both DYNAMIC_DEBUG and DRM_VC4 were built-in. We
> started to look into what configuration would trigger it.
>
> It looks like a good reproducer is:
>
> ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- make -j18 defconfig mod2yesconfig
> ./scripts/config -e CONFIG_DYNAMIC_DEBUG
> ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- make -j18 olddefconfig
Interestingly, this was making the kernel Image cross the 64MB boundary.
I've compiled the same configuration but with -Os, and then tried to
boot the failing configuration with U-Boot instead of the RaspberryPi
firmware, and both of them worked. I guess that leaves us with a
bootloader bug, and nothing related to Linux after all.
Sorry for the noise,
Maxime
next prev parent reply other threads:[~2022-09-05 11:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-31 14:42 Maxime Ripard
2022-09-05 11:18 ` Maxime Ripard [this message]
2022-09-08 8:14 ` Martin Roukala
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