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[PULL 06/11] fuzz: run the main-loop in fork-server process
From: |
Stefan Hajnoczi |
Subject: |
[PULL 06/11] fuzz: run the main-loop in fork-server process |
Date: |
Fri, 5 Jun 2020 10:47:45 +0100 |
From: Alexander Bulekov <alxndr@bu.edu>
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 <alxndr@bu.edu>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Message-id: 20200512030133.29896-5-alxndr@bu.edu
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
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_net_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);
}
}
--
2.25.4
- [PULL 00/11] Block patches, Stefan Hajnoczi, 2020/06/05
- [PULL 01/11] io_uring: retry io_uring_submit() if it fails with errno=EINTR, Stefan Hajnoczi, 2020/06/05
- [PULL 02/11] io_uring: use io_uring_cq_ready() to check for ready cqes, Stefan Hajnoczi, 2020/06/05
- [PULL 03/11] fuzz: add datadir for oss-fuzz compatability, Stefan Hajnoczi, 2020/06/05
- [PULL 04/11] fuzz: fix typo in i440fx-qtest-reboot arguments, Stefan Hajnoczi, 2020/06/05
- [PULL 05/11] fuzz: add mangled object name to linker script, Stefan Hajnoczi, 2020/06/05
- [PULL 06/11] fuzz: run the main-loop in fork-server process,
Stefan Hajnoczi <=
- [PULL 08/11] memory: Extract memory_region_msync() from memory_region_writeback(), Stefan Hajnoczi, 2020/06/05
- [PULL 07/11] memory: Rename memory_region_do_writeback -> memory_region_writeback, Stefan Hajnoczi, 2020/06/05
- [PULL 09/11] hw/block: Let the NVMe emulated device be target-agnostic, Stefan Hajnoczi, 2020/06/05
- [PULL 10/11] exec: Rename qemu_ram_writeback() as qemu_ram_msync(), Stefan Hajnoczi, 2020/06/05
- [PULL 11/11] block: Factor out bdrv_run_co(), Stefan Hajnoczi, 2020/06/05
- Re: [PULL 00/11] Block patches, Peter Maydell, 2020/06/05