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bh=obSFu5gu523AqVMnoUB8q9xLwd8TgW9ZodC9N3uuImc=; b=WJuJkK9aZPxEVlT4quUAX1kxNr/3XmVhwcocppqlsuBiJ8kk2Z685T/xaeqhZuk7Jul8Vc VqQUwU3wBWkm1j/+VUgyMboTIMrj6q9vNEo3zYDHtVnlwajVErObJiyJ3zS/K1Rl1JTw4C MXuRgytb/htJTNfIqeH2YUmRYWm3m7I= X-MC-Unique: n3PVCGaDP4GHs0PS5B-Ypw-1 From: Stefan Hajnoczi To: Peter Maydell , qemu-devel@nongnu.org Subject: [PULL 06/11] fuzz: run the main-loop in fork-server process Date: Fri, 5 Jun 2020 10:47:45 +0100 Message-Id: <20200605094750.149957-7-stefanha@redhat.com> In-Reply-To: <20200605094750.149957-1-stefanha@redhat.com> References: <20200605094750.149957-1-stefanha@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=207.211.31.120; 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charset="utf-8" From: Alexander Bulekov Without this, the time since the last main-loop keeps increasing, as the fuzzer runs. The forked children need to handle all the "past-due" timers, slowing them down, over time. With this change, the parent/fork-server process runs the main-loop, while waiting on the child, ensuring that the timer events do not pile up, over time. Signed-off-by: Alexander Bulekov Reviewed-by: Darren Kenny Message-id: 20200512030133.29896-5-alxndr@bu.edu Signed-off-by: Stefan Hajnoczi --- tests/qtest/fuzz/i440fx_fuzz.c | 1 + tests/qtest/fuzz/virtio_net_fuzz.c | 2 ++ tests/qtest/fuzz/virtio_scsi_fuzz.c | 2 ++ 3 files changed, 5 insertions(+) diff --git a/tests/qtest/fuzz/i440fx_fuzz.c b/tests/qtest/fuzz/i440fx_fuzz.c index 775b3041ba..e2f31e56f9 100644 --- a/tests/qtest/fuzz/i440fx_fuzz.c +++ b/tests/qtest/fuzz/i440fx_fuzz.c @@ -151,6 +151,7 @@ static void i440fx_fuzz_qos_fork(QTestState *s, i440fx_fuzz_qos(s, Data, Size); _Exit(0); } else { + flush_events(s); wait(NULL); } } diff --git a/tests/qtest/fuzz/virtio_net_fuzz.c b/tests/qtest/fuzz/virtio_n= et_fuzz.c index d08a47e278..a33bd73067 100644 --- a/tests/qtest/fuzz/virtio_net_fuzz.c +++ b/tests/qtest/fuzz/virtio_net_fuzz.c @@ -122,6 +122,7 @@ static void virtio_net_fork_fuzz(QTestState *s, flush_events(s); _Exit(0); } else { + flush_events(s); wait(NULL); } } @@ -134,6 +135,7 @@ static void virtio_net_fork_fuzz_check_used(QTestState = *s, flush_events(s); _Exit(0); } else { + flush_events(s); wait(NULL); } } diff --git a/tests/qtest/fuzz/virtio_scsi_fuzz.c b/tests/qtest/fuzz/virtio_= scsi_fuzz.c index 3b95247f12..51dce491ab 100644 --- a/tests/qtest/fuzz/virtio_scsi_fuzz.c +++ b/tests/qtest/fuzz/virtio_scsi_fuzz.c @@ -145,6 +145,7 @@ static void virtio_scsi_fork_fuzz(QTestState *s, flush_events(s); _Exit(0); } else { + flush_events(s); wait(NULL); } } @@ -164,6 +165,7 @@ static void virtio_scsi_with_flag_fuzz(QTestState *s, } _Exit(0); } else { + flush_events(s); wait(NULL); } } --=20 2.25.4