linux-kernel - Re: powerpc/32: Fix boot failure on non 6xx platforms

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Date:   Tue,  8 Aug 2017 20:55:16 +1000 (AEST)
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Christophe Leroy <christophe.leroy@....fr>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Scott Wood <oss@...error.net>
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: powerpc/32: Fix boot failure on non 6xx platforms

On Tue, 2017-08-08 at 06:37:24 UTC, Christophe Leroy wrote:
> commit d300627c6a536 ("powerpc/6xx: Handle DABR match before
> calling do_page_fault") breaks non 6xx platforms.
> 
> [    6.029556] Failed to execute /init (error -14)
> [    6.034623] Starting init: /bin/sh exists but couldn't execute it
> (error -14)
> [    6.041489] Kernel panic - not syncing: No working init found.  Try
> passing init= option to kernel. See Linux
> Documentation/admin-guide/init.rst for guidance.
> [    6.055518] CPU: 0 PID: 1 Comm: init Not tainted
> 4.13.0-rc3-s3k-dev-00143-g7aa62e972a56 #56
> [    6.063745] Call Trace:
> [    6.066224] [c60f1ed0] [c001a624] panic+0x108/0x250 (unreliable)
> [    6.072140] [c60f1f30] [c0002640] rootfs_mount+0x0/0x58
> [    6.077311] [c60f1f40] [c000cb80] ret_from_kernel_thread+0x5c/0x64
> [    6.083405] Rebooting in 180 seconds..
> 
> This is because in handle_page_fault(), the call to do_page_fault()
> has been mistakenly enclosed inside an #ifdef CONFIG_6xx
> 
> Fixes: d300627c6a536 ("powerpc/6xx: Handle DABR match before
> calling do_page_fault")
> 
> Signed-off-by: Christophe Leroy <christophe.leroy@....fr>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/64d0a506fbdd64906f168539bee32a

cheers