If the iothread lock isn't taken by the main thread, the RCU callbacks might run concurrently with the main thread. QEMU's not ready for that.
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com> --- vl.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/vl.c b/vl.c index 09693f5..d743727 100644 --- a/vl.c +++ b/vl.c @@ -2763,6 +2763,9 @@ int main(int argc, char **argv, char **envp) FILE *vmstate_dump_file = NULL; Error *main_loop_err = NULL; + qemu_init_cpu_loop(); + qemu_mutex_lock_iothread(); + atexit(qemu_run_exit_notifiers); error_set_progname(argv[0]); qemu_init_exec_dir(argv[0]); @@ -4098,9 +4101,6 @@ int main(int argc, char **argv, char **envp) os_set_line_buffering(); - qemu_init_cpu_loop(); - qemu_mutex_lock_iothread(); - #ifdef CONFIG_SPICE /* spice needs the timers to be initialized by this point */ qemu_spice_init(); -- 2.3.0