linux-kernel - Re: depmod gets stuck in symlink cycle in arch/arm/boot/dts/include

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Date:   Fri, 12 May 2017 15:55:20 -0700
From:   Olof Johansson <olof@...om.net>
To:     Omar Sandoval <osandov@...ndov.com>
Cc:     linux-modules@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Lucas De Marchi <lucas.de.marchi@...il.com>,
        Heiko Stuebner <heiko@...ech.de>
Subject: Re: depmod gets stuck in symlink cycle in arch/arm/boot/dts/include

Yeah, the location of the include directory needs to move. I'll post a
patch shortly. Russell reported it earlier but the week got busy and I
lost track of it.

The easiest solution here is to move the dts/include directory to
somewhere else.


-Olof

On Fri, May 12, 2017 at 3:23 PM, Omar Sandoval <osandov@...ndov.com> wrote:
> Hi,
>
> Linux kernel commit 4027494ae6e3 ("ARM: dts: add arm/arm64 include
> symlinks") introduced a couple of symlink cycles:
>
> $ ls -al arch/arm{,64}/boot/dts/include
> arch/arm64/boot/dts/include:
> total 12
> drwxr-xr-x 1 osandov users  38 May 11 14:01 .
> drwxr-xr-x 1 osandov users 320 Jan 25 20:44 ..
> lrwxrwxrwx 1 osandov users  24 May 11 14:01 arm -> ../../../../arm/boot/dts
> lrwxrwxrwx 1 osandov users   2 May 11 14:01 arm64 -> ..
> lrwxrwxrwx 1 osandov users  34 Nov 23 12:07 dt-bindings -> ../../../../../include/dt-bindings
>
> arch/arm/boot/dts/include:
> total 12
> drwxr-xr-x 1 osandov users    38 May 11 14:01 .
> drwxr-xr-x 1 osandov users 63102 May 11 14:01 ..
> lrwxrwxrwx 1 osandov users     2 May 11 14:01 arm -> ..
> lrwxrwxrwx 1 osandov users    26 May 11 14:01 arm64 -> ../../../../arm64/boot/dts
> lrwxrwxrwx 1 osandov users    34 Nov 23 12:07 dt-bindings -> ../../../../../include/dt-bindings
>
> On my system, /lib/modules/$(uname -r)/kernel is a symlink to
> /lib/modules/$(uname -r)/build, which is my built linux.git. depmod
> doesn't like these symlink cycles and ends up in an infinite loop.
>
> Maybe I shouldn't be symlinking kernel to build like this, but depmod
> shouldn't be getting stuck like this either. I wonder if anything else
> is going to barf on these symlink cycles, too.