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Re: Linux 6.13-rc3 many different panics in Xen PV dom0
- To: Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Jürgen Groß <jgross@xxxxxxxx>
- Date: Thu, 2 Jan 2025 11:20:32 +0100
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- Delivery-date: Thu, 02 Jan 2025 10:20:54 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 19.12.24 17:14, Marek Marczykowski-Górecki wrote:
Hi,
It crashes on boot like below, most of the times. But sometimes (rarely)
it manages to stay alive. Below I'm pasting few of the crashes that look
distinctly different, if you follow the links, you can find more of
them. IMHO it looks like some memory corruption bug somewhere. I tested
also Linux 6.13-rc2 before, and it had very similar issue.
...
Full log:
https://openqa.qubes-os.org/tests/122879/logfile?filename=serial0.txt
I can reproduce a crash with 6.13-rc5 PV dom0.
What is really interesting in the logs: most crashes seem to happen right
after a module being loaded (in my reproducer it was right after loading
the first module).
I need to go through the 6.13 commits, but I think I remember having seen
a patch optimizing module loading by using large pages for addressing the
loaded modules. Maybe the case of no large pages being available isn't
handled properly.
Juergen
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