kprobes: kretprobe events missing on 2-core KVM guest

[platform/kernel/linux-starfive.git] / kernel / ksysfs.c

diff --git a/kernel/ksysfs.c b/kernel/ksysfs.c
index b1292a5..65dba90 100644 (file)
--- a/kernel/ksysfs.c
+++ b/kernel/ksysfs.c
@@ -105,7 +105,12 @@ KERNEL_ATTR_RO(kexec_crash_loaded);
 static ssize_t kexec_crash_size_show(struct kobject *kobj,
                                       struct kobj_attribute *attr, char *buf)
 {
-       return sprintf(buf, "%zu\n", crash_get_memory_size());
+       ssize_t size = crash_get_memory_size();
+
+       if (size < 0)
+               return size;
+
+       return sprintf(buf, "%zd\n", size);
 }
 static ssize_t kexec_crash_size_store(struct kobject *kobj,
                                   struct kobj_attribute *attr,