In case monitor_flush() fails to write the contents of mon->outbuf to the output device, mon->outbuf is not cleaned up properly. Check the return code of the qemu_chr_fe_write() function and cleanup the outbuf if it fails.
References: http://lists.nongnu.org/archive/html/qemu-devel/2014-01/msg02890.html Signed-off-by: Stratos Psomadakis <pso...@grnet.gr> Signed-off-by: Dimitris Aragiorgis <dim...@grnet.gr> --- monitor.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/monitor.c b/monitor.c index 80456fb..cba56bc 100644 --- a/monitor.c +++ b/monitor.c @@ -288,8 +288,8 @@ void monitor_flush(Monitor *mon) if (len && !mon->mux_out) { rc = qemu_chr_fe_write(mon->chr, (const uint8_t *) buf, len); - if (rc == len) { - /* all flushed */ + if ((rc < 0 && errno != EAGAIN) || (rc == len)) { + /* all flushed or error */ QDECREF(mon->outbuf); mon->outbuf = qstring_new(); return; -- 1.7.10.4