linux-kernel - Kernel crash at boot time or reboot on ARM64/Hikey

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Date:   Wed, 15 Mar 2017 22:40:29 +0100
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     kirill.shutemov@...ux.intel.com, mhocko@...e.com,
        torvalds@...ux-foundation.org
Cc:     linux-kernel@...r.kernel.org, amit.kucheria@...aro.org,
        vincent.guittot@...aro.org, guodong.xu@...aro.org
Subject: Kernel crash at boot time or reboot on ARM64/Hikey


Hi Kirill,

I'm facing an issue with my ARM64/Hikey board. The kernel crashes after booting
when running services. With the linaro toolchain, the same happens but when I
reboot the system.

It is hard to see a clear error, as randomly the console shows an infinite
dump, a couple of lines saying "Invalid address".

I have been asking Vincent to test if its board was crashing and it appears the
same happens.

After git bisecting, I found this commit is the offending one.

c2febafc67734a62196c1b9dfba926412d4077ba is the first bad commit
commit c2febafc67734a62196c1b9dfba926412d4077ba
Author: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
Date:   Thu Mar 9 17:24:07 2017 +0300

    mm: convert generic code to 5-level paging

    Convert all non-architecture-specific code to 5-level paging.

    It's mostly mechanical adding handling one more page table level in
    places where we deal with pud_t.

    Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
    Acked-by: Michal Hocko <mhocko@...e.com>
    Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>

:040000 040000 492678235575b71f88062912e3d2a8f0983a7ab1 1e17bdef1b1ecae4261dd431bc4be67107dfdd5b M      drivers
:040000 040000 13e1ad3cf4523bab0e62efe9afa846c53b2738fc 183b6407eea0f34e5132dc67aaae1d8e3e23e555 M      fs
:040000 040000 1f90d08acc5850318753d5958f615e3b2a484ec7 dcdc7cce85ddbc5b5ef68fcfc77bb2809b4e1115 M      include
:040000 040000 9b3446e04a8d7939962c2df710f6113eea696a50 f6e627b0d378f0a00d2987fdd0c7b215306e6e3c M      lib
:040000 040000 77b15108634671b2286fcefcd3009ea96ba41543 6fc93cb7cb991c2c26b50ce7762ba469e5d4f367 M      mm

Was this issue already spotted ?

Thanks in advance

  -- Daniel

-- 

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