Re: test-aio-multithread assertion

[Paolo Bonzini <pbonzini@redhat.com>]

On 14/10/19 12:26, Peter Maydell wrote:
> On Thu, 5 Sep 2019 at 14:17, Peter Maydell <peter.maydell@linaro.org> wrote:
>>
>> On Wed, 4 Sep 2019 at 12:50, Peter Maydell <peter.maydell@linaro.org> wrote:
>>>
>>> Hi; I've been seeing intermittently on the BSDs this assertion
>>> running test-aio-multithread as part of 'make check':
>>>
>>> MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}
>>> tests/test-aio-multithread -m=quick -k --tap < /dev/null |
>>> ./scripts/tap-drive
>>> r.pl --test-name="test-aio-multithread"
>>> PASS 1 test-aio-multithread /aio/multi/lifecycle
>>> PASS 2 test-aio-multithread /aio/multi/schedule
>>> ERROR - too few tests run (expected 5, got 2)
>>> Assertion failed: (!qemu_lockcnt_count(&ctx->list_lock)), function
>>> aio_ctx_finalize, file /home/qemu/qemu-test.kaRA0o/src/util/async.c,
>>> line 283.
>>> Abort trap (core dumped)
>>> gmake: *** [/home/qemu/qemu-test.kaRA0o/src/tests/Makefile.include:905:
>>> check-unit] Error 1
>>>
>>> Anybody got any ideas?
>>
>> Here's a different intermittent assertion on Netbsd from test-aio-multithread:
>>
>> MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}
>> tests/test-aio-multithread -m=quick
>> -k --tap < /dev/null | ./scripts/tap-driver.pl
>> --test-name="test-aio-multithread"
>> PASS 1 test-aio-multithread /aio/multi/lifecycle
>> PASS 2 test-aio-multithread /aio/multi/schedule
>> assertion "QSLIST_EMPTY(&ctx->scheduled_coroutines)" failed: file
>> "util/async.c", line 279, function "
>> aio_ctx_finalize"
>> ERROR - too few tests run (expected 5, got 2)
> 
> Just saw this QSLIST_EMPTY(&ctx->scheduled_coroutines) assertion
> from FreeBSD as well, so it's still around as a definite
> intermittent.

This could be similar to what Stefan fixed in commit 2362a28ea1, only in
the test infrastructure.

Paolo