Re: Hang in fb_notifier_call_chain with nvidia framebuffer
From: Andrew Morton
Date: Sun Oct 08 2006 - 02:23:42 EST
On Wed, 04 Oct 2006 09:26:04 -0700
Wink Saville <wink@xxxxxxxxxxx> wrote:
> Attached in the zip file is:
>
> log-hang1.txt -> log showing hang
> cfg-hang1 -> config file for hang condition
> cfg-ok -> config file that works
> fbmem.c -> Modifications to register_framebuffer
>
> To possibly assist I turned on debugging in nvidia.c and found that it
> hung in the call to register_framebuffer. I then added some additional
> debug in that routine and it appears the hang occurs in the call to
> fb_notifier_call_chain.
>
> Please let me know what else maybe needed.
Please:
- get sysrq working:
set CONFIG_MAGIC_SYSRQ=y, rebuild, reboot
echo 1 > /proc/sys/kernel/sysrq
dmesg -n 8
- make it hang
- Hit alt-sysrq-T
- Send us the resulting output
Thanks.
-
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