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[Qemu-devel] [PATCH v2 15/35] numa: Fix QMP command set-numa-node error
From: |
Markus Armbruster |
Subject: |
[Qemu-devel] [PATCH v2 15/35] numa: Fix QMP command set-numa-node error handling |
Date: |
Mon, 15 Oct 2018 13:52:49 +0200 |
Calling error_report() in a function that takes an Error ** argument
is suspicious. parse_numa_node() does that, and then exit()s. It
also passes &error_fatal to machine_set_cpu_numa_node(). Both wrong.
Attempting to configure numa when the machine doesn't support it kills
the VM:
$ qemu-system-x86_64 -nodefaults -S -display none -M none -preconfig -qmp
stdio
{"QMP": {"version": {"qemu": {"micro": 50, "minor": 0, "major": 3},
"package": "v3.0.0-837-gc5e4e49258"}, "capabilities": []}}
{"execute": "qmp_capabilities"}
{"return": {}}
{"execute": "set-numa-node", "arguments": {"type": "node"}}
NUMA is not supported by this machine-type
$ echo $?
1
Messed up when commit 64c2a8f6d3f and 7c88e65d9e9 (v2.10.0) added
incorrect error handling right next to correct examples. Latent bug
until commit f3be67812c2 (v3.0.0) made it accessible via QMP. Fairly
harmless in practice, because it's limited to RUN_STATE_PRECONFIG.
The fix is obvious: replace error_report(); exit() by error_setg();
return.
This affects parse_numa_node()'s other caller
numa_complete_configuration(): since it ignores errors, the "NUMA is
not supported by this machine-type" is now ignored, too. But that
error is as unexpected there as any other. Change it to abort on
error instead.
Fixes: f3be67812c226162f86ce92634bd913714445420
Cc: Igor Mammedov <address@hidden>
Signed-off-by: Markus Armbruster <address@hidden>
Reviewed-by: Igor Mammedov <address@hidden>
---
numa.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/numa.c b/numa.c
index 81542d4ebb..1d7c49ad43 100644
--- a/numa.c
+++ b/numa.c
@@ -60,6 +60,7 @@ NodeInfo numa_info[MAX_NODES];
static void parse_numa_node(MachineState *ms, NumaNodeOptions *node,
Error **errp)
{
+ Error *err = NULL;
uint16_t nodenr;
uint16List *cpus = NULL;
MachineClass *mc = MACHINE_GET_CLASS(ms);
@@ -82,8 +83,8 @@ static void parse_numa_node(MachineState *ms, NumaNodeOptions
*node,
}
if (!mc->cpu_index_to_instance_props || !mc->get_default_cpu_node_id) {
- error_report("NUMA is not supported by this machine-type");
- exit(1);
+ error_setg(errp, "NUMA is not supported by this machine-type");
+ return;
}
for (cpus = node->cpus; cpus; cpus = cpus->next) {
CpuInstanceProperties props;
@@ -97,7 +98,11 @@ static void parse_numa_node(MachineState *ms,
NumaNodeOptions *node,
props = mc->cpu_index_to_instance_props(ms, cpus->value);
props.node_id = nodenr;
props.has_node_id = true;
- machine_set_cpu_numa_node(ms, &props, &error_fatal);
+ machine_set_cpu_numa_node(ms, &props, &err);
+ if (err) {
+ error_propagate(errp, err);
+ return;
+ }
}
if (node->has_mem && node->has_memdev) {
@@ -367,7 +372,7 @@ void numa_complete_configuration(MachineState *ms)
if (ms->ram_slots > 0 && nb_numa_nodes == 0 &&
mc->auto_enable_numa_with_memhp) {
NumaNodeOptions node = { };
- parse_numa_node(ms, &node, NULL);
+ parse_numa_node(ms, &node, &error_abort);
}
assert(max_numa_nodeid <= MAX_NODES);
--
2.17.1
- [Qemu-devel] [PATCH v2 00/35] Replace some unwise uses of error_report() & friends, Markus Armbruster, 2018/10/15
- [Qemu-devel] [PATCH v2 08/35] 9pfs: Fix CLI parsing crash on error, Markus Armbruster, 2018/10/15
- [Qemu-devel] [PATCH v2 12/35] migration: Fix !replay_can_snapshot() error handling, Markus Armbruster, 2018/10/15
- [Qemu-devel] [PATCH v2 03/35] block: Use warn_report() & friends to report warnings, Markus Armbruster, 2018/10/15
- [Qemu-devel] [PATCH v2 01/35] error: Fix use of error_prepend() with &error_fatal, &error_abort, Markus Armbruster, 2018/10/15
- [Qemu-devel] [PATCH v2 02/35] Use error_fatal to simplify obvious fatal errors (again), Markus Armbruster, 2018/10/15
- [Qemu-devel] [PATCH v2 22/35] vl: Clean up error reporting in mon_init_func(), Markus Armbruster, 2018/10/15
- [Qemu-devel] [PATCH v2 15/35] numa: Fix QMP command set-numa-node error handling,
Markus Armbruster <=
- [Qemu-devel] [PATCH v2 19/35] qom: Clean up error reporting in user_creatable_add_opts_foreach(), Markus Armbruster, 2018/10/15
- [Qemu-devel] [PATCH v2 20/35] vl: Clean up error reporting in chardev_init_func(), Markus Armbruster, 2018/10/15
- [Qemu-devel] [PATCH v2 18/35] vl: Clean up error reporting in parse_add_fd(), Markus Armbruster, 2018/10/15
- [Qemu-devel] [PATCH v2 34/35] vl: Fix exit status for -drive format=help, Markus Armbruster, 2018/10/15
- [Qemu-devel] [PATCH v2 11/35] smbios: Clean up error handling in smbios_add(), Markus Armbruster, 2018/10/15
- [Qemu-devel] [PATCH v2 21/35] vl: Clean up error reporting in machine_set_property(), Markus Armbruster, 2018/10/15
- [Qemu-devel] [PATCH v2 10/35] ioapic: Fix error handling in realize(), Markus Armbruster, 2018/10/15
- [Qemu-devel] [PATCH v2 35/35] vl: Simplify call of parse_name(), Markus Armbruster, 2018/10/15
- [Qemu-devel] [PATCH v2 32/35] vl: Assert drive_new() does not fail in default_drive(), Markus Armbruster, 2018/10/15
- [Qemu-devel] [PATCH v2 25/35] ui/keymaps: Fix handling of erroneous include files, Markus Armbruster, 2018/10/15