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Re: [Qemu-discuss] Debug kernel hang with qemu

From: Trevor Woerner
Subject: Re: [Qemu-discuss] Debug kernel hang with qemu
Date: Tue, 8 Jan 2013 16:19:53 -0500

On Tue, Jan 8, 2013 at 3:52 PM, p_j_r_m <address@hidden> wrote:
> I´m trying to debug a i386 kernel hang using qemu.Problem happens
> when,inside my guest, i send a SIGKILL to a realtime process (openais
> aisexec cluster daemon).This hangs kernel exactly as in real hardware!.

I'd be curious to know what your finding are. I've stumbled across
this is the past too. My solution was to simply reset the priority of
the target process to 0, and then kill() it. I think the problem lies
in a mismatch between priorities (if my memory is correct).

In my case (i think) both processes are running as the same user but
the target had a RT priority and the process killing it didn't (or
something like that).

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