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References: <CAFEAcA_KVG19uhPuBUNx4ySmebnL1Hit6=HUX9ug0FkBFMwasg@mail.gmail.com>
From: Thomas Huth <thuth@redhat.com>
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Date: Tue, 28 Feb 2017 20:30:41 +0100
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Subject: Re: [Qemu-devel] intermittent make check failure:
 "tcg_handle_interrupt: assertion failed: (qemu_mutex_iothread_locked())"
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To: Peter Maydell <peter.maydell@linaro.org>, QEMU Developers <qemu-devel@nongnu.org>, =?UTF-8?Q?Alex_Benn=c3=a9e?= <alex.bennee@linaro.org>
Cc: Richard Henderson <rth@twiddle.net>, Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>, Artyom Tarasenko <atar4qemu@gmail.com>

On 28.02.2017 20:10, Peter Maydell wrote:
> I got a make check failure on aarch64 host running a sparc64 test:
> 
> TEST: tests/prom-env-test... (pid=13573)
>   /sparc64/prom-env/sun4u:                                             **
> ERROR:/home/pm215/qemu/translate-common.c:34:tcg_handle_interrupt:
> assertion failed: (qemu_mutex_iothread_locked())
> Broken pipe
> FAIL
> GTester: last random seed: R02Sa5fa983185fe5e65cfb5b7fcb39ed3d1
> (pid=13579)
> FAIL: tests/prom-env-test
> 
> This is with commit 9514f2648ca05b3.
> 
> It didn't reproduce on a rerun of 'make check' and it didn't
> look like the merge in question was particularly relevant to
> the failure, so I went ahead and pushed it to master.
> 
> I'm (perhaps unfairly) assuming that this is fallout from MTTCG
> landing. (prom-env-test is one of the handful of tests in
> 'make check' that actually runs TCG code.)

Maybe worth mentioning that the prom-env test for sparc64 has just been
enabled a couple of commits ago (6b591ad613010f13). There was an issue
with that test for the sparc64 target last year, but IIRC it only
affected 32-bit hosts and has been fixed, so I think/hope this is a
different issue now...

 Thomas