On 1/2/19 3:16 PM, Laurent Vivier wrote:
> We can have a race condition between qemu_cpu_kick_thread() and
> qemu_kvm_cpu_thread_fn() when we hotunplug a CPU. In this case,
> qemu_cpu_kick_thread() can try to kick a thread that is exiting.
> pthread_kill() returns an error and qemu is stopped by an exit(1).
>
> qemu:qemu_cpu_kick_thread: No such process
>
> We can ignore safely this error.
>
> Signed-off-by: Laurent Vivier <lviv...@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <phi...@redhat.com>
> ---
> cpus.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/cpus.c b/cpus.c
> index 0ddeeefc14..4717490bd0 100644
> --- a/cpus.c
> +++ b/cpus.c
> @@ -1778,7 +1778,7 @@ static void qemu_cpu_kick_thread(CPUState *cpu)
> }
> cpu->thread_kicked = true;
> err = pthread_kill(cpu->thread->thread, SIG_IPI);
> - if (err) {
> + if (err && err != ESRCH) {
> fprintf(stderr, "qemu:%s: %s", __func__, strerror(err));
> exit(1);
> }
>
