When the length of mname is less than 5, memcpy("xenfv", mname, 5) will cause
heap buffer overflow. Therefore, use strncmp to avoid this problem.
The asan showed stack:
ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60200000f2f4 at
pc 0x7f65d8cc2225 bp 0x7ffe93cc5a60 sp 0x7ffe93cc5208 READ of size 5 at
0x60200000f2f4 thread T0
#0 0x7f65d8cc2224 in memcmp (/lib64/libasan.so.5+0xdf224)
#1 0x5632c20be95b in qtest_cb_for_every_machine tests/qtest/libqtest.c:1282
#2 0x5632c20b7995 in main tests/qtest/test-hmp.c:160
#3 0x7f65d88fed42 in __libc_start_main (/lib64/libc.so.6+0x26d42)
#4 0x5632c20b72cd in _start (build/tests/qtest/test-hmp+0x542cd)
Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Gan Qixin <ganqixin@huawei.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Message-Id: <20210106050625.518041-1-ganqixin@huawei.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
qobject_to_json() and qobject_to_json_pretty() build a GString, then
covert it to QString. Just one of the callers actually needs a
QString: qemu_rbd_parse_filename(). A few others need a string they
can modify: qmp_send_response(), qga's send_response(), to_json_str(),
and qmp_fd_vsend_fds(). The remainder just need a string.
Change qobject_to_json() and qobject_to_json_pretty() to return the
GString.
qemu_rbd_parse_filename() now has to convert to QString. All others
save a QString temporary. to_json_str() actually becomes a bit
simpler, because GString provides more convenient modification
functions.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20201211171152.146877-6-armbru@redhat.com>
If expected_args is 0, qtest frees the argument vector and then returns it
nevertheless. Coverity complains; in practice this is not an issue because
expected_args == 0 means that the caller is not interested in the argument
vector, but it would be a potential problem if somebody wanted to add
commands with optional arguments to qtest.
Suggested-by: Kamil Dudka <kdudka@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20201120073149.99079-1-pbonzini@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
In socket_accept() we use setsockopt() to set SO_RCVTIMEO,
but we don't check the return value for failure. Do so.
Fixes: Coverity CID 1432321
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20201103115112.19211-1-peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The g_list_remove_link doesn't free the link element,
opposed to what I thought.
Switch to g_list_delete_link that does free it.
Also refactor the code a bit.
Thanks for Max Reitz for helping me with this.
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20201019163702.471239-4-mlevitsk@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
By a mistake I added the pending events in a wrong order.
Fix this by using g_list_append.
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20201019163702.471239-3-mlevitsk@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
The qtests can be run directly by specifying the QEMU binary with the
QTEST_QEMU_BINARY environment variable, for example:
$ QTEST_QEMU_BINARY=x86_64-softmmu/qemu-system-x86_64 tests/qtest/test-hmp
However, if you specify a binary without a path, for example with
QTEST_QEMU_BINARY=qemu-system-x86_64 if the QEMU binary is in your
$PATH, then the test currently simply crashes.
Let's try a little bit smarter here by looking for the final '-'
instead of the slash.
Message-Id: <20201012114816.43546-1-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Let test use the new functionality for buffering events.
The only remaining users of qtest_qmp_receive_dict are tests
that fuzz the QMP protocol.
Tested with 'make check-qtest'.
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20201006123904.610658-4-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The purpose of qtest_qmp_receive_success was mostly to process events
that arrived between the issueing of a command and the "return"
line from QMP. This is now handled by the buffering of events
that libqtest performs automatically.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
The new qtest_qmp_receive buffers all the received qmp events, allowing
qtest_qmp_eventwait_ref to return them.
This is intended to solve the race in regard to ordering of qmp events
vs qmp responses, as soon as the callers start using the new interface.
In addition to that, define qtest_qmp_event_ref a function which only scans
the buffer that qtest_qmp_receive stores the events to. This is intended
for callers that are only interested in events that were received during
the last call to the qtest_qmp_receive.
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20201006123904.610658-3-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
In the next patch a new version of qtest_qmp_receive will be
reintroduced that will buffer received qmp events for later
consumption in qtest_qmp_eventwait_ref
No functional change intended.
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
qmp_assert_error_class() does more than just assert: it also unrefs
the @rsp argument. Rename to qmp_expect_error_and_unref() to reduce
confusion.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20200902115733.1229537-1-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
We have the same check in three places. Let's unify it in a central
place instead.
Message-Id: <20200622104339.21000-1-thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
When using qtest "in-process" communication, qtest_sendf directly calls
a function in the server (qtest.c). Previously, bufwrite used
socket_send, which bypasses the TransportOps enabling the call into
qtest.c. This change replaces the socket_send calls with ops->send,
maintaining the benefits of the direct socket_send call, while adding
support for in-process qtest calls.
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: 20200220041118.23264-8-alxndr@bu.edu
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This makes it simple to swap the transport functions for qtest commands
to and from the qtest client. For example, now it is possible to
directly pass qtest commands to a server handler that exists within the
same process, without the standard way of writing to a file descriptor.
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: 20200220041118.23264-7-alxndr@bu.edu
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The tests directory itself is pretty overcrowded, and it's hard to
see which test belongs to which test subsystem (unit, qtest, ...).
Let's move the qtests to a separate folder for more clarity.
Message-Id: <20191218103059.11729-6-thuth@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Gan Qixin