following a464982499b2f637f6699e3d03e0a9d2e0b5288b, it's now possible for
there to be attempts to take the BQL before CPUs have been realized in
cases where a machine model inits peripherals before the first CPU.
BQL lock aquisition kicks the first_cpu, leading to a segfault if this
happens pre-realize. Guard the CPU kick routine to perform no action for
a CPU that doesn't exist or doesn't have a thread yet.
Signed-off-by: Peter Crosthwaite <peter.crosthwa...@xilinx.com>
---
cpus.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/cpus.c b/cpus.c
index 1ce90a1..c90dfa8 100644
--- a/cpus.c
+++ b/cpus.c
@@ -1046,6 +1046,10 @@ static void *qemu_tcg_cpu_thread_fn(void *arg)
static void qemu_cpu_kick_thread(CPUState *cpu)
{
+ if (!cpu || !cpu->thread) {
+ return;
+ }
+
#ifndef _WIN32
int err;
--
2.3.1.2.g90df61e.dirty
