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[Qemu-devel] [PULL 16/32] tests/qmp-test: Demonstrate QMP errors jumping
From: |
Markus Armbruster |
Subject: |
[Qemu-devel] [PULL 16/32] tests/qmp-test: Demonstrate QMP errors jumping the queue |
Date: |
Tue, 3 Jul 2018 17:37:12 +0200 |
When OOB is enabled, out-of-band commands are executed right away,
everything else is queued. This lets out-of-band commands "jump the
queue".
However, certain errors are always reported right away, and therefore
can jump the queue even when the erroneous input does not request
out-of-band execution. These errors are pretty unlikely to occur in
production, but it's wrong all the same. Mark FIXME.
Signed-off-by: Markus Armbruster <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
Reviewed-by: Peter Xu <address@hidden>
Message-Id: <address@hidden>
---
monitor.c | 1 +
tests/qmp-test.c | 7 +++++++
2 files changed, 8 insertions(+)
diff --git a/monitor.c b/monitor.c
index 37ca4e798d..c49214cd8f 100644
--- a/monitor.c
+++ b/monitor.c
@@ -4339,6 +4339,7 @@ static void handle_qmp_command(JSONMessageParser *parser,
GQueue *tokens)
return;
err:
+ /* FIXME overtakes queued in-band commands, wrong when !qmp_is_oob() */
monitor_qmp_respond(mon, NULL, err, NULL);
qobject_unref(req);
}
diff --git a/tests/qmp-test.c b/tests/qmp-test.c
index 3f4e43bd2b..6581d1d755 100644
--- a/tests/qmp-test.c
+++ b/tests/qmp-test.c
@@ -242,6 +242,13 @@ static void test_qmp_oob(void)
unblock_blocked_cmd();
recv_cmd_id(qts, "ib-blocks-1");
recv_cmd_id(qts, "ib-quick-1");
+
+ /* FIXME certain in-band errors overtake slow in-band command */
+ send_cmd_that_blocks(qts, "blocks-2");
+ qtest_async_qmp(qts, "{ 'id': 'err-2' }");
+ recv_cmd_id(qts, NULL);
+ unblock_blocked_cmd();
+ recv_cmd_id(qts, "blocks-2");
cleanup_blocking_cmd();
qtest_quit(qts);
--
2.17.1
- [Qemu-devel] [PULL 13/32] qmp: Revert change to handle_qmp_command tracepoint, (continued)
- [Qemu-devel] [PULL 13/32] qmp: Revert change to handle_qmp_command tracepoint, Markus Armbruster, 2018/07/03
- [Qemu-devel] [PULL 07/32] qmp: Make "id" optional again even in "oob" monitors, Markus Armbruster, 2018/07/03
- [Qemu-devel] [PULL 18/32] qmp: Don't let JSON errors jump the queue, Markus Armbruster, 2018/07/03
- [Qemu-devel] [PULL 05/32] qmp: Get rid of x-oob-test command, Markus Armbruster, 2018/07/03
- [Qemu-devel] [PULL 02/32] monitor: Spell "I/O thread" consistently in comments, Markus Armbruster, 2018/07/03
- [Qemu-devel] [PULL 09/32] qmp qemu-ga: Revert change that accidentally made qemu-ga accept "id", Markus Armbruster, 2018/07/03
- [Qemu-devel] [PULL 29/32] qobject: Let qobject_from_jsonf() fail instead of abort, Markus Armbruster, 2018/07/03
- [Qemu-devel] [PULL 27/32] qmp: Add some comments around null responses, Markus Armbruster, 2018/07/03
- [Qemu-devel] [PULL 32/32] qapi: Polish command flags documentation in qapi-code-gen.txt, Markus Armbruster, 2018/07/03
- [Qemu-devel] [PULL 01/32] qmp: Say "out-of-band" instead of "Out-Of-Band", Markus Armbruster, 2018/07/03
- [Qemu-devel] [PULL 16/32] tests/qmp-test: Demonstrate QMP errors jumping the queue,
Markus Armbruster <=
- [Qemu-devel] [PULL 03/32] docs/interop/qmp: Improve OOB documentation, Markus Armbruster, 2018/07/03
- [Qemu-devel] [PULL 15/32] qmp: Simplify code around monitor_qmp_dispatch_one(), Markus Armbruster, 2018/07/03
- [Qemu-devel] [PULL 19/32] monitor: Rename use_io_thr to use_io_thread, Markus Armbruster, 2018/07/03
- [Qemu-devel] [PULL 26/32] qmp: Simplify monitor_qmp_respond(), Markus Armbruster, 2018/07/03
- [Qemu-devel] [PULL 24/32] qmp: Replace monitor_json_emitter{, raw}() by qmp_{queue, send}_response(), Markus Armbruster, 2018/07/03
- [Qemu-devel] [PULL 20/32] monitor: Peel off @mon_global wrapper, Markus Armbruster, 2018/07/03
- [Qemu-devel] [PULL 22/32] qmp: De-duplicate error response building, Markus Armbruster, 2018/07/03
- [Qemu-devel] [PULL 21/32] qobject: New qdict_from_jsonf_nofail(), Markus Armbruster, 2018/07/03
- [Qemu-devel] [PULL 28/32] qmp: Switch timestamp_put() to qdict_from_jsonf_nofail(), Markus Armbruster, 2018/07/03
- [Qemu-devel] [PULL 25/32] qmp: Replace get_qmp_greeting() by qmp_greeting(), Markus Armbruster, 2018/07/03