Alexander Bulekov cb06fdad05 fuzz: support for fork-based fuzzing. ... fork() is a simple way to ensure that state does not leak in between fuzzing runs. Unfortunately, the fuzzer mutation engine relies on bitmaps which contain coverage information for each fuzzing run, and these bitmaps should be copied from the child to the parent(where the mutation occurs). These bitmaps are created through compile-time instrumentation and they are not shared with fork()-ed processes, by default. To address this, we create a shared memory region, adjust its size and map it _over_ the counter region. Furthermore, libfuzzer doesn't generally expose the globals that specify the location of the counters/coverage bitmap. As a workaround, we rely on a custom linker script which forces all of the bitmaps we care about to be placed in a contiguous region, which is easy to locate and mmap over. Signed-off-by: Alexander Bulekov <alxndr@bu.edu> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Darren Kenny <darren.kenny@oracle.com> Message-id: 20200220041118.23264-16-alxndr@bu.edu Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>		2020-02-22 08:26:48 +00:00
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fuzz	fuzz: support for fork-based fuzzing.	2020-02-22 08:26:48 +00:00
libqos	libqos: move useful qos-test funcs to qos_external	2020-02-22 08:26:48 +00:00
ac97-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
acpi-utils.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
acpi-utils.h	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
ahci-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
arm-cpu-features.c	target/arm/cpu: Add the kvm-no-adjvtime CPU property	2020-01-30 16:02:06 +00:00
bios-tables-test-allowed-diff.h	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
bios-tables-test.c	tests/qtest: update comments about bios-tables-test-allowed-diff.h	2020-02-04 09:00:57 +01:00
boot-order-test.c	boot-order-test: fix memleaks in boot-order-test	2020-02-04 09:00:57 +01:00
boot-sector.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
boot-sector.h	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
boot-serial-test.c	tests: Silence various warnings with pseries	2020-02-03 11:33:11 +11:00
cdrom-test.c	hw/ppc/prep: Remove the deprecated "prep" machine and the OpenHackware BIOS	2020-02-02 14:07:57 +11:00
cpu-plug-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
dbus-vmstate1.xml	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
dbus-vmstate-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
device-introspect-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
device-plug-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
display-vga-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
drive_del-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
ds1338-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
e1000-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
e1000e-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
eepro100-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
endianness-test.c	hw/ppc/prep: Remove the deprecated "prep" machine and the OpenHackware BIOS	2020-02-02 14:07:57 +11:00
es1370-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
fdc-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
fw_cfg-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
hd-geo-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
hexloader-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
i440fx-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
i82801b11-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
ide-test.c	tests/ide-test: Create a single unit-test covering more PRDT cases	2020-01-27 17:07:31 -05:00
intel-hda-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
ioh3420-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
ipmi-bt-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
ipmi-kcs-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
ipoctal232-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
ivshmem-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
libqtest-single.h	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
libqtest.c	libqtest: make bufwrite rely on the TransportOps	2020-02-22 08:26:47 +00:00
libqtest.h	libqtest: make bufwrite rely on the TransportOps	2020-02-22 08:26:47 +00:00
m25p80-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
m48t59-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
machine-none-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
Makefile.include	libqos: move useful qos-test funcs to qos_external	2020-02-22 08:26:48 +00:00
megasas-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
microbit-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
migration-helpers.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
migration-helpers.h	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
migration-test.c	migration-test: fix some memleaks in migration-test	2020-02-13 11:28:54 +01:00
modules-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
ne2000-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
numa-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
nvme-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
pca9552-test.c	libqos: rename i2c_send and i2c_recv	2020-02-22 08:26:48 +00:00
pci-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
pcnet-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
pflash-cfi02-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
pnv-xscom-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
prom-env-test.c	tests: Silence various warnings with pseries	2020-02-03 11:33:11 +11:00
pvpanic-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
pxe-test.c	tests: Silence various warnings with pseries	2020-02-03 11:33:11 +11:00
q35-test.c	tests: q35: MCH: add default SMBASE SMRAM lock test	2020-01-22 00:23:07 -05:00
qmp-cmd-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
qmp-test.c	qapi: Split control.json off misc.json	2020-02-17 13:53:47 +01:00
qom-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
qos-test.c	libqos: move useful qos-test funcs to qos_external	2020-02-22 08:26:48 +00:00
rtas-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
rtc-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
rtl8139-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
sdhci-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
spapr-phb-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
tco-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
test-arm-mptimer.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
test-filter-mirror.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
test-filter-redirector.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
test-hmp.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
test-netfilter.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
test-x86-cpuid-compat.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
tmp105-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
tpm-crb-swtpm-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
tpm-crb-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
tpm-emu.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
tpm-emu.h	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
tpm-tests.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
tpm-tests.h	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
tpm-tis-swtpm-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
tpm-tis-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
tpm-util.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
tpm-util.h	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
usb-hcd-ehci-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
usb-hcd-ohci-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
usb-hcd-uhci-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
usb-hcd-xhci-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
vhost-user-test.c	tests/qtest/vhost-user-test: Fix memory leaks	2020-01-16 17:01:25 +01:00
virtio-9p-test.c	tests/virtio-9p: added readdir test	2020-02-08 09:29:04 +01:00
virtio-blk-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
virtio-ccw-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
virtio-net-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
virtio-rng-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
virtio-scsi-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
virtio-serial-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
virtio-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
vmgenid-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
vmxnet3-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00
wdt_ib700-test.c	test: Move qtests to a separate directory	2020-01-12 11:42:41 +01:00