[PATCH] f2fs: check inject_rate validity during configuring

[Chao Yu]

Type of inject_rate is unsigned int, let's check new value's
validity during configuring.

Signed-off-by: Chao Yu <yuchao0@xxxxxxxxxx>
---
 fs/f2fs/sysfs.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index 0575edbe3ed6..02d4012a9183 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -222,6 +222,8 @@ static ssize_t __sbi_store(struct f2fs_attr *a,
 #ifdef CONFIG_F2FS_FAULT_INJECTION
 	if (a->struct_type == FAULT_INFO_TYPE && t >= (1 << FAULT_MAX))
 		return -EINVAL;
+	if (a->struct_type == FAULT_INFO_RATE && t >= UINT_MAX)
+		return -EINVAL;
 #endif
 	if (a->struct_type == RESERVED_BLOCKS) {
 		spin_lock(&sbi->stat_lock);
-- 
2.18.0.rc1