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From: Peter Maydell <peter.maydell@linaro.org>
Date: Tue, 12 Feb 2019 09:49:12 +0000
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Subject: Re: [Qemu-devel] [Qemu-block] [PULL 0/9] Block patches
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To: Stefan Hajnoczi <stefanha@gmail.com>
Cc: Stefano Garzarella <sgarzare@redhat.com>, Stefan Hajnoczi <stefanha@redhat.com>, Laurent Vivier <lvivier@redhat.com>, Kevin Wolf <kwolf@redhat.com>, Thomas Huth <thuth@redhat.com>, Eduardo Habkost <ehabkost@redhat.com>, Qemu-block <qemu-block@nongnu.org>, "Michael S. Tsirkin" <mst@redhat.com>, QEMU Developers <qemu-devel@nongnu.org>, Max Reitz <mreitz@redhat.com>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, Paolo Bonzini <pbonzini@redhat.com>

On Tue, 12 Feb 2019 at 03:51, Stefan Hajnoczi <stefanha@gmail.com> wrote:
>
> On Mon, Feb 11, 2019 at 11:42:14AM +0000, Peter Maydell wrote:
> > Hi; this fails to pass "make check" (all platforms):
> >
> > MALLOC_PERTURB_=${MALLOC_PERTURB_:-$(( ${RANDOM:-0} % 255 + 1))}
> > QTEST_QEMU_BINARY=arm-softmmu/qemu-system-arm QTEST_QEMU_IMG=qemu-img
> > tests/virtio-blk-test -m
> > =quick -k --tap < /dev/null | ./scripts/tap-driver.pl
> > --test-name="virtio-blk-test"
> > **
> > ERROR:/home/pm215/qemu/tests/virtio-blk-test.c:272:test_basic:
> > assertion failed (status == 0): (1 == 0)
> > ERROR - too few tests run (expected 1, got 0)
>
> Stefano, I'm dropping the virtio-blk DISCARD/WRITE_ZEROES series.
> Please debug this failure.
>
> I cannot reproduce it on a Linux host so maybe it's related to macOS.
> First I thought it's because write zeroes is not supported on macOS, but
> QEMU should fall back to writing a bounce buffer of zeroes.

The test failed everywhere, including the Linux platforms, not just OSX.

thanks
-- PMM