Re: [ 53.230885] RIP: 0010:[<ffffffff811b3557>] [<ffffffff811b3557>] qlink_free

[Fengguang Wu <fengguang.wu@intel.com>]

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Hi Alexander,

>When I build the kernel with your config and run the script, QEMU
>bails out with an error message:
>  qemu: linux kernel too old to load a ram disk
>Any idea how to work around that?

Yes this config may not include necessary parts. I cannot enter initrd
this way:

[    3.079656] Failed to execute /init (error -8)
[    3.082079] Starting init: /sbin/init exists but couldn't execute it (error -8)
[    3.084836] Starting init: /etc/init exists but couldn't execute it (error -13)
[    3.088568] Starting init: /bin/sh exists but couldn't execute it (error -8)
[    3.090560] Kernel panic - not syncing: No working init found.  Try passing init= option to kernel. See Linux Documentation/init.txt for guidance.

What's worse, the bug on RIP qlink_free() is only 20% reproducible
in one old boot server. I cannot reproduce that problem in other
more modern machines.

Feel free to ignore it if cannnot find the root cause in call trace.

Thanks,
Fengguang