From: Laurent Vivier Date: Wed, 2 Jan 2019 14:16:03 +0000 (+0100) Subject: cpus: ignore ESRCH in qemu_cpu_kick_thread() X-Git-Tag: v4.0.0-rc0~114^2~66 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d455ebc4f827c14a29240db17931e170b6937c6c;p=thirdparty%2Fqemu.git cpus: ignore ESRCH in qemu_cpu_kick_thread() 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 Signed-off-by: Paolo Bonzini --- diff --git a/cpus.c b/cpus.c index b09b7027126..154daf57dcb 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); }