From: Chao Yu <yuchao0@huawei.com>
Date: Fri, 4 Jan 2019 09:39:53 +0000 (+0800)
Subject: f2fs: check inject_rate validity during configuring
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=36c5733f9570e9052a6437012be8034085f25ab7;p=linux.git

f2fs: check inject_rate validity during configuring

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

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index 0575edbe3ed6d..02d4012a91837 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -222,6 +222,8 @@ out:
 #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);