If the fd socket peer closed shortly, ppoll may receive a POLLHUP event before the expected POLLIN event, and qemu will do nothing but goes into an infinite loop of the POLLHUP event.
So, abort the migration if we receive a POLLHUP event. Signed-off-by: Wang Xin <wangxinxin.w...@huawei.com> diff --git a/migration/fd.c b/migration/fd.c index cd06182..5932c87 100644 --- a/migration/fd.c +++ b/migration/fd.c @@ -15,6 +15,7 @@ */ #include "qemu/osdep.h" +#include "qemu/error-report.h" #include "channel.h" #include "fd.h" #include "monitor/monitor.h" @@ -46,6 +47,11 @@ static gboolean fd_accept_incoming_migration(QIOChannel *ioc, GIOCondition condition, gpointer opaque) { + if (condition & G_IO_HUP) { + error_report("The migration peer closed, job abort"); + exit(EXIT_FAILURE); + } + migration_channel_process_incoming(ioc); object_unref(OBJECT(ioc)); return G_SOURCE_REMOVE; @@ -67,7 +73,7 @@ void fd_start_incoming_migration(const char *infd, Error **errp) qio_channel_set_name(QIO_CHANNEL(ioc), "migration-fd-incoming"); qio_channel_add_watch(ioc, - G_IO_IN, + G_IO_IN | G_IO_HUP, fd_accept_incoming_migration, NULL, NULL); -- 2.8.1.windows.1