Staging: rdma: Use memdup_user (4ecc4a18) · Commits · 戴 / test

Use memdup_user when user data is immediately copied into the allocated region. Issue found using coccinelle. Signed-off-by:

drivers/staging/rdma/ipath/ipath_fs.c

+3 −10

Original line number	Diff line number	Diff line
		@@ -195,16 +195,9 @@ static ssize_t flash_write(struct file file, const char __user buf,
		goto bail;
		}

		tmp = kmalloc(count, GFP_KERNEL);
		if (!tmp) {
		ret = -ENOMEM;
		goto bail;
		}

		if (copy_from_user(tmp, buf, count)) {
		ret = -EFAULT;
		goto bail_tmp;
		}
		tmp = memdup_user(buf, count);
		if (IS_ERR(tmp))
		return PTR_ERR(tmp);

		dd = file_inode(file)->i_private;
		if (ipath_eeprom_write(dd, pos, tmp, count)) {