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    Subject[PATCH v4 4/5] ubi: Reserve sufficient buffer length for the input mask
    Date
    Because the mask received by the emulate_failures interface
    is a 32-bit unsigned integer, ensure that there is sufficient
    buffer length to receive and display this value.

    Signed-off-by: ZhaoLong Wang <wangzhaolong1@huawei.com>
    Reviewed-by: Zhihao Cheng <chengzhihao1@huawei.com>
    ---
    drivers/mtd/ubi/debug.c | 4 ++--
    1 file changed, 2 insertions(+), 2 deletions(-)

    diff --git a/drivers/mtd/ubi/debug.c b/drivers/mtd/ubi/debug.c
    index e8aa1827f23a..b4f40cd2bdaf 100644
    --- a/drivers/mtd/ubi/debug.c
    +++ b/drivers/mtd/ubi/debug.c
    @@ -332,7 +332,7 @@ static ssize_t dfs_file_read(struct file *file, char __user *user_buf,
    struct dentry *dent = file->f_path.dentry;
    struct ubi_device *ubi;
    struct ubi_debug_info *d;
    - char buf[8];
    + char buf[16];
    int val;

    ubi = ubi_get_device(ubi_num);
    @@ -400,7 +400,7 @@ static ssize_t dfs_file_write(struct file *file, const char __user *user_buf,
    struct ubi_device *ubi;
    struct ubi_debug_info *d;
    size_t buf_size;
    - char buf[8] = {0};
    + char buf[16] = {0};
    int val;

    ubi = ubi_get_device(ubi_num);
    --
    2.31.1
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