From: wzt.wzt on
It seems handle_vcpu_hotplug_event() not check the sscanf() return value.

Signed-off-by: Zhitong Wang <zhitong.wangzt(a)alibaba-inc.com>

---
drivers/xen/cpu_hotplug.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/xen/cpu_hotplug.c b/drivers/xen/cpu_hotplug.c
index 14e2d99..99773a6 100644
--- a/drivers/xen/cpu_hotplug.c
+++ b/drivers/xen/cpu_hotplug.c
@@ -69,8 +69,8 @@ static void handle_vcpu_hotplug_event(struct xenbus_watch *watch,

cpustr = strstr(node, "cpu/");
if (cpustr != NULL) {
- sscanf(cpustr, "cpu/%u", &cpu);
- vcpu_hotplug(cpu);
+ if (sscanf(cpustr, "cpu/%u", &cpu) == 1)
+ vcpu_hotplug(cpu);
}
}

--
1.6.5.3

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo(a)vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/