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qemu/tests
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Eric Blake a861564015 qmp: Fix reference-counting of qnull on empty output visit 
Commit 6c2f9a15 ensured that we would not return NULL when the
caller used an output visitor but had nothing to visit. But
in doing so, it added a FIXME about a reference count leak
that could abort qemu in the (unlikely) case of SIZE_MAX such
visits (more plausible on 32-bit).  (Although that commit
suggested we might fix it in time for 2.5, we ran out of time;
fortunately, it is unlikely enough to bite that it was not
worth worrying about during the 2.5 release.)

This fixes things by documenting the internal contracts, and
explaining why the internal function can return NULL and only
the public facing interface needs to worry about qnull(),
thus avoiding over-referencing the qnull_ global object.

It does not, however, fix the stupidity of the stack mixing
up two separate pieces of information; add a FIXME to explain
that issue, which will be fixed shortly in a future patch.

Signed-off-by: Eric Blake <eblake@redhat.com>
Cc: qemu-stable@nongnu.org
Message-Id: <1454075341-13658-25-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-02-08 17:29:57 +01:00
..
acpi-test-data tests: pc: acpi: add expected DSDT.bridge blobs and update DSDT blobs 2016-02-04 19:53:02 +02:00
guest-debug tests/guest-debug: introduce basic gdbstub tests 2015-12-17 13:37:15 +00:00
image-fuzzer tests: Use Python 2.6 "except E as ..." syntax 2016-02-08 17:29:54 +01:00
libqos libqos: remove some leaks 2016-02-02 13:28:58 +01:00
multiboot tests/multiboot: Add test for modules 2015-01-26 12:22:44 +01:00
qapi-schema qapi: Detect base class loops 2015-12-17 08:21:29 +01:00
qemu-iotests tests: Use Python 2.6 "except E as ..." syntax 2016-02-08 17:29:54 +01:00
rocker rocker: tests: don't need to specify master/self when setting vlans 2015-07-07 13:13:22 +01:00
tcg maint: remove unused include for signal.h 2015-09-11 10:21:38 +03:00
vmstate-static-checker-data tests: vmstate static checker: add size mismatch inside substructure 2014-06-23 19:14:52 +02:00
.gitignore crypto: add QCryptoSecret object class for password/key handling 2015-12-18 16:25:08 +00:00
ac97-test.c tests: Add ac97 qtest 2014-05-05 20:58:33 +02:00
ahci-test.c ide: Clean up includes 2016-01-29 15:07:23 +00:00
bios-tables-test.c tests: acpi: print ASL diff in verbose mode 2016-01-08 16:01:37 +02:00
boot-order-test.c
check-block.sh qemu-iotests: make check-block.sh work on out-of-tree builds 2016-01-07 21:30:16 +01:00
check-qdict.c check-qdict: Test cases for new functions 2015-06-12 16:58:06 +02:00
check-qfloat.c
check-qint.c
check-qjson.c check-qjson: Add test for JSON nesting depth limit 2015-11-26 09:18:38 +01:00
check-qlist.c
check-qom-interface.c
check-qom-proplist.c qom: Change object property iterator API contract 2016-01-18 17:47:58 +01:00
check-qstring.c
crypto-tls-x509-helpers.c crypto: fix leaks in TLS x509 helper functions 2015-11-18 14:56:58 +00:00
crypto-tls-x509-helpers.h crypto: add sanity checking of TLS x509 credentials 2015-09-15 15:05:09 +01:00
device-introspect-test.c qdev: Protect device-list-properties against broken devices 2015-10-09 15:25:57 +02:00
display-vga-test.c virtio-gpu: add to display-vga test 2015-07-07 11:23:18 +02:00
drive_del-test.c libqtest: New hmp() & friends 2015-10-09 15:25:57 +02:00
ds1338-test.c arm: imx25-pdk: Fix machine name 2015-10-16 11:14:53 +01:00
e1000-test.c tests: Use qtest_add_data_func() consistently 2015-06-19 10:29:14 +02:00
eepro100-test.c tests: Use qtest_add_data_func() consistently 2015-06-19 10:29:14 +02:00
endianness-test.c tests: Use qtest_add_data_func() consistently 2015-06-19 10:29:14 +02:00
es1370-test.c tests: Add es1370 qtest 2014-05-05 20:58:33 +02:00
fdc-test.c Revert "hw/block/fdc: Implement tray status" 2016-02-02 17:47:04 +01:00
fw_cfg-test.c Implement fw_cfg DMA interface 2015-10-19 15:26:53 +02:00
hd-geo-test.c blockdev: Set 'format' indicates non-empty drive 2015-12-18 14:34:43 +01:00
i440fx-test.c tests/i44fx-test: No need for zeroing memory before memset 2015-11-06 15:42:38 +03:00
i82801b11-test.c tests: Add i82801b11 qtest 2014-03-31 22:36:17 +02:00
ide-test.c ide: Clean up includes 2016-01-29 15:07:23 +00:00
intel-hda-test.c tests: Add intel-hda qtests 2014-05-05 20:58:33 +02:00
io-channel-helpers.c io: add QIOChannelSocket class 2015-12-18 12:18:31 +00:00
io-channel-helpers.h io: add QIOChannelSocket class 2015-12-18 12:18:31 +00:00
ioh3420-test.c tests: Add ioh3420 qtest 2014-05-05 20:58:33 +02:00
ipmi-bt-test.c ipmi: Add tests 2015-12-22 18:39:19 +02:00
ipmi-kcs-test.c ipmi: Add tests 2015-12-22 18:39:19 +02:00
ipoctal232-test.c tests: Add ipoctal232 qtest 2014-02-14 21:07:13 +01:00
ivshmem-test.c ivshmem-test: test both msi & irq cases 2016-02-02 13:28:58 +01:00
libqtest.c tests: Use proper functions types instead of void (*fn) 2015-12-04 18:25:42 +01:00
libqtest.h tests: Use proper functions types instead of void (*fn) 2015-12-04 18:25:42 +01:00
m48t59-test.c qtest: Include system headers before user headers 2014-02-17 23:10:02 +01:00
Makefile char: convert from GIOChannel to QIOChannel 2016-01-26 15:58:11 +01:00
ne2000-test.c
nvme-test.c qtests: Specify image format explicitly 2014-12-10 10:31:12 +01:00
pc-cpu-test.c tests: Use qtest_add_data_func() consistently 2015-06-19 10:29:14 +02:00
pcnet-test.c
pkix_asn1_tab.c crypto: add sanity checking of TLS x509 credentials 2015-09-15 15:05:09 +01:00
pvpanic-test.c pvpanic-test: Assert pause event 2014-03-31 22:36:17 +02:00
q35-test.c q35: add test for SMRAM.D_LCK 2015-06-05 19:45:09 +02:00
qemu-iotests-quick.sh qemu-iotests: Speed up make check-block 2015-01-13 11:47:55 +00:00
qom-test.c qom-test: Fix qmp() leaks 2015-12-04 18:29:31 +01:00
rcutorture.c rcu tests: fix compilation on 32-bit ppc 2015-03-25 13:37:10 +01:00
rtc-test.c qtest: Include system headers before user headers 2014-02-17 23:10:02 +01:00
rtl8139-test.c rtl8139: remove muldiv64() 2015-09-25 14:53:29 +02:00
spapr-phb-test.c tests: Add spapr-pci-host-bridge qtest 2014-03-13 01:21:57 +01:00
tco-test.c tco-test: fix up config accesses and re-enable 2015-07-08 12:38:30 +03:00
test-aio.c error: Use error_reportf_err() where it makes obvious sense 2016-01-13 15:16:17 +01:00
test-base64.c util: add base64 decoding function 2015-12-18 16:25:08 +00:00
test-bitops.c tests: Add missing include to test-bitops.c 2014-11-02 10:04:34 +03:00
test-blockjob-txn.c tests: add BlockJobTxn unit test 2015-11-12 16:22:44 +01:00
test-coroutine.c coroutine: move into libqemuutil.a library 2015-10-20 14:59:04 +01:00
test-crypto-cipher.c crypto: add additional query accessors for cipher instances 2015-12-23 11:02:20 +00:00
test-crypto-hash.c crypto: add ability to query hash digest len 2015-12-23 11:02:20 +00:00
test-crypto-secret.c crypto: add QCryptoSecret object class for password/key handling 2015-12-18 16:25:08 +00:00
test-crypto-tlscredsx509.c crypto: add sanity checking of TLS x509 credentials 2015-09-15 15:05:09 +01:00
test-crypto-tlssession.c crypto: introduce new module for handling TLS sessions 2015-09-15 15:07:43 +01:00
test-cutils.c tests: add some qemu_strtosz() tests 2015-09-25 12:04:41 +02:00
test-hbitmap.c maint: avoid useless "if (foo) free(foo)" pattern 2015-09-11 10:21:38 +03:00
test-int128.c tests/test-int128: Don't use __noclone__ attribute on clang 2014-03-02 17:20:37 +04:00
test-io-channel-buffer.c io: add QIOChannelBuffer class 2015-12-18 12:18:31 +00:00
test-io-channel-command.c io: add QIOChannelCommand class 2015-12-18 12:18:31 +00:00
test-io-channel-file.c io: add QIOChannelFile class 2015-12-18 12:18:31 +00:00
test-io-channel-socket.c io: fix stack allocation when sending of file descriptors 2015-12-23 10:53:03 +00:00
test-io-channel-tls.c io: add QIOChannelTLS class 2015-12-18 12:18:31 +00:00
test-io-task.c io: add QIOTask class for async operations 2015-12-18 12:18:30 +00:00
test-iov.c
test-mul64.c
test-netfilter.c tests: add test cases for netfilter object 2015-10-12 13:34:32 +08:00
test-opts-visitor.c qapi: Swap visit_* arguments for consistent 'name' placement 2016-02-08 17:29:56 +01:00
test-qdev-global-props.c qom: Swap 'name' next to visitor in ObjectPropertyAccessor 2016-02-08 17:29:56 +01:00
test-qemu-opts.c QemuOpts: Wean off qerror_report_err() 2015-06-22 18:20:39 +02:00
test-qga.c qga: Better mapping of SEEK_* in guest-file-seek 2015-11-25 17:56:45 -06:00
test-qmp-commands.c qapi: Swap visit_* arguments for consistent 'name' placement 2016-02-08 17:29:56 +01:00
test-qmp-event.c qapi: Unbox base members 2015-11-02 08:30:26 +01:00
test-qmp-input-strict.c qapi: Swap visit_* arguments for consistent 'name' placement 2016-02-08 17:29:56 +01:00
test-qmp-input-visitor.c qapi: Swap visit_* arguments for consistent 'name' placement 2016-02-08 17:29:56 +01:00
test-qmp-output-visitor.c qmp: Fix reference-counting of qnull on empty output visit 2016-02-08 17:29:57 +01:00
test-rcu-list.c rcu: actually register threads that have RCU read-side critical sections 2015-07-24 13:57:45 +02:00
test-rfifolock.c rfifolock: add recursive FIFO lock 2014-03-13 14:42:21 +01:00
test-string-input-visitor.c qapi: Swap visit_* arguments for consistent 'name' placement 2016-02-08 17:29:56 +01:00
test-string-output-visitor.c qapi: Swap visit_* arguments for consistent 'name' placement 2016-02-08 17:29:56 +01:00
test-thread-pool.c error: Use error_reportf_err() where it makes obvious sense 2016-01-13 15:16:17 +01:00
test-throttle.c test-throttle: Simplify qemu_init_main_loop() error handling 2016-01-13 15:16:17 +01:00
test-timed-average.c util: Infrastructure for computing recent averages 2015-11-12 16:22:45 +01:00
test-visitor-serialization.c qapi: Swap visit_* arguments for consistent 'name' placement 2016-02-08 17:29:56 +01:00
test-vmstate.c coroutine: move into libqemuutil.a library 2015-10-20 14:59:04 +01:00
test-write-threshold.c block: add event when disk usage exceeds threshold 2015-02-06 17:24:21 +01:00
test-x86-cpuid.c target-i386: Move topology.h to include/hw/i386 2015-03-09 16:30:02 -03:00
test-xbzrle.c maint: remove unused include for strings.h 2015-09-11 10:21:38 +03:00
tmp105-test.c libqtest: escape strings in QMP commands, fix leak 2014-07-01 10:20:41 +02:00
tpci200-test.c tests: Add tpci200 qtest 2014-02-14 21:02:27 +01:00
usb-hcd-ehci-test.c usb: Clean up includes 2016-01-29 15:07:23 +00:00
usb-hcd-ohci-test.c usb: Clean up includes 2016-01-29 15:07:23 +00:00
usb-hcd-uhci-test.c usb: Clean up includes 2016-01-29 15:07:23 +00:00
usb-hcd-xhci-test.c usb: Clean up includes 2016-01-29 15:07:23 +00:00
vhost-user-bridge.c tests/vhost-user-bridge.c: fix fd leakage 2015-12-02 19:27:26 +02:00
vhost-user-test.c vhost-user-test: use correct ROM to speed up and avoid spurious failures 2016-02-06 20:44:08 +02:00
virtio-9p-test.c 9pfs: Clean up includes 2016-01-29 15:07:23 +00:00
virtio-balloon-test.c tests: Add virtio-balloon qtest 2014-03-13 01:21:56 +01:00
virtio-blk-test.c tests: Check QVIRTIO_F_ANY_LAYOUT flag in virtio-blk test 2015-03-10 14:02:23 +01:00
virtio-console-test.c virtio-console-test: Test virtserialport as well 2014-03-13 21:12:07 +01:00
virtio-net-test.c tests: test rx recovery from cont 2015-08-04 09:41:28 +01:00
virtio-rng-test.c tests: virtio-rng: Check if hot-plug/unplug works 2014-10-15 05:03:12 +02:00
virtio-scsi-test.c virtio-scsi-test: Add test case for tail unaligned WRITE SAME 2015-07-30 15:44:49 +02:00
virtio-serial-test.c tests: virtio-serial: Check if hot-plug/unplug works 2014-10-15 05:03:12 +02:00
vmxnet3-test.c
wdt_ib700-test.c timer: rename NSEC_PER_SEC due to Mac OS X header clash 2015-07-20 17:01:00 +01:00