[Qemu-devel] [PULL 17/36] arm: virt: Fix segmentation fault when specifying an unsupported CPU

[Peter Maydell <peter.maydell@linaro.org>]

From: Shannon Zhao <shannon.zhao@linaro.org>

Using -cpu cortex-a9 (or any other unsupported CPU) with the virt
board will cause QEMU to segmentation fault.  This bug was introduced
in commit 9ac4ef77, which incorrectly added a NULL terminator when
converting the VirtBoardInfo array into a simple array of strings
defining the valid CPUs. The cpuname_valid() loop already has
a termination condition based on ARRAY_SIZE, so the NULL is
spurious and causes the strcmp() to segfault if we reach it.
Delete the NULL.

Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Message-id: 1484619334-10488-1-git-send-email-zhaoshenglong@huawei.com
[PMM: expanded commit message]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/arm/virt.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 7a03f84..95ac585 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -167,7 +167,6 @@ static const char *valid_cpus[] = {
     "cortex-a53",
     "cortex-a57",
     "host",
-    NULL
 };
 
 static bool cpuname_valid(const char *cpu)
-- 
2.7.4