[Bug 62541] New: Kernel oops/panic during system boot with systemd - "Unable to handle kernel NULL pointer dereference"

[Bug 62541] New: Kernel oops/panic during system boot with systemd - "Unable to handle kernel NULL pointer dereference"

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=62541

            Bug ID: 62541
           Summary: Kernel oops/panic during system boot with systemd -
                    "Unable to handle kernel NULL pointer dereference"
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.11
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: a.byszuk@elka.pw.edu.pl
        Regression: No

Created attachment 110251
  --> https://bugzilla.kernel.org/attachment.cgi?id=110251&action=edit
dmesg, lswh, .config outputs

Hello,

I have a bug (100 % repeatable) that prevents booting Linux when systemd is
used as an init system. However, booting with traditional init works fine.
I'm posting this bug to the DRI subsystem because I was (barely) able to
capture to capture kernel message before the screen becomes blank.
I can verify that this problem happens in all 3.11.x kernels and in Debian's
3.10 kernel.
The hardware is Dell Vostro 3560 - Intel Ivy Bridge, hybrid graphics (Intel +
Radeon), OCZ Vertex 4 SSD.
My suspicion is that maybe the system bootup is too fast for the kernel; I was
able to boot kernel once even with systemd, but that was when I turned on all
the debugging messages which flooded console a bit.

Photo of captured BUG message: http://s23.postimg.org/qgk843rzv/vga1.png
dmesg, lshw and .config outputs attached.

Kind regards,
Adrian

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[Bug 62541] Kernel oops/panic during system boot with systemd - "Unable to handle kernel NULL pointer dereference"

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=62541

Adrian Byszuk <a.byszuk@elka.pw.edu.pl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |a.byszuk@elka.pw.edu.pl
           Hardware|All                         |x86-64

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[Bug 62541] Kernel oops/panic during system boot with systemd - "Unable to handle kernel NULL pointer dereference"

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=62541

--- Comment #1 from Adrian Byszuk <a.byszuk@elka.pw.edu.pl> ---
OK, I was able to track down the problem more precisely.

In my rc.local I have:
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch

for switching discrete graphics after boot. With this line booting fails.
But when I change it to:
sleep 5
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch

kernel is booting just fine.

So I think the problem is that systemd is, unlike the old init, executing
rc.local just in the beginning which switches discrete graphics just in the
beginning of system startup.

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[Bug 62541] Kernel oops/panic during system boot with systemd - "Unable to handle kernel NULL pointer dereference"

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=62541

xerofoify@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |xerofoify@gmail.com

--- Comment #2 from xerofoify@gmail.com ---
Is this bug closed? Seems the problem is with systemd and not the 
kernel. Can we please close this bug as it's fairly old as of me
writing this in June 2014.
Thanks A Fellow Developer,
Nick

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[Bug 62541] Kernel oops/panic during system boot with systemd - "Unable to handle kernel NULL pointer dereference"

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=62541

--- Comment #3 from Szőgyényi Gábor (szg0000@freemail.hu) ---
Please try to reproduce this bug with latest kernel image & latest systemd.

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[Bug 62541] Kernel oops/panic during system boot with systemd - "Unable to handle kernel NULL pointer dereference"

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=62541

--- Comment #4 from Jani Nikula (jani.nikula@intel.com) ---
(In reply to Szőgyényi Gábor from comment #3)
> Please try to reproduce this bug with latest kernel image & latest systemd.

Sorry, what's the point? If you're scrubbing the bugs here, please just close
the old bugs, and ask for reopen if the bug persists with latests bits and
pieces. It's been 3½ years since the reporter was last seen here.

Ditto for all the other bugs you've commented on.

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[Bug 62541] Kernel oops/panic during system boot with systemd - "Unable to handle kernel NULL pointer dereference"

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=62541

Jani Nikula (jani.nikula@intel.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |OBSOLETE

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