target/arm/monitor: query-cpu-model-expansion crashed qemu when using machine type...
commit0999a4ba8718aa96105b978d3567fc7e90244c7e
authorLiang Yan <lyan@suse.com>
Fri, 7 Feb 2020 14:04:21 +0000 (7 14:04 +0000)
committerPeter Maydell <peter.maydell@linaro.org>
Fri, 7 Feb 2020 14:04:21 +0000 (7 14:04 +0000)
tree1c0859c74f5da2026d347191f288e16c1ae8178f
parent346ed3151f1c43e72c40cb55b392a1d4cface62c
target/arm/monitor: query-cpu-model-expansion crashed qemu when using machine type none

Commit e19afd566781 mentioned that target-arm only supports queryable
cpu models 'max', 'host', and the current type when KVM is in use.
The logic works well until using machine type none.

For machine type none, cpu_type will be null if cpu option is not
set by command line, strlen(cpu_type) will terminate process.
So We add a check above it.

This won't affect i386 and s390x since they do not use current_cpu.

Signed-off-by: Liang Yan <lyan@suse.com>
Message-id: 20200203134251.12986-1-lyan@suse.com
Reviewed-by: Andrew Jones <drjones@redhat.com>
Tested-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
target/arm/monitor.c