[libvirt] [PATCH REBASE 2/5] qemu: monitor: set error flag even in OOM conditions

lastError.code is used as flag in qemu monitor. Unfortunately due to temporary OOM conditions (very unlikely through as thread local error is allocated on first use) we can fail to set this flag in case of monitor eofs/errors. This can cause hangs. Let's make sure flag is always set in case eofs/errors. Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy(a)virtuozzo.com&gt; --- src/qemu/qemu_monitor.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/src/qemu/qemu_monitor.c b/src/qemu/qemu_monitor.c index f642d9a..906a320 100644 --- a/src/qemu/qemu_monitor.c +++ b/src/qemu/qemu_monitor.c @@ -757,6 +757,11 @@ qemuMonitorIO(int watch, int fd, int events, void *opaque) virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("Error while processing monitor IO")); virCopyLastError(&mon->lastError); + + /* set error code if due to OOM conditions we fail to set it before */ + if (mon->lastError.code == VIR_ERR_OK) + mon->lastError.code = VIR_ERR_INTERNAL_ERROR; + virResetLastError(); } -- 1.8.3.1