From: Markus Elfring <[email protected]> Date: Tue, 24 Jan 2017 22:47:07 +0100
A local variable was set to an error code in three cases before a concrete error situation was detected. Thus move the corresponding assignments into if branches to indicate a software failure there. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <[email protected]> --- security/integrity/ima/ima_fs.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/security/integrity/ima/ima_fs.c b/security/integrity/ima/ima_fs.c index 98304411915d..a50c26f9772c 100644 --- a/security/integrity/ima/ima_fs.c +++ b/security/integrity/ima/ima_fs.c @@ -317,21 +317,24 @@ static ssize_t ima_write_policy(struct file *file, const char __user *buf, /* No partial writes. */ result = -EINVAL; - if (*ppos != 0) + if (*ppos != 0) { + result = -EINVAL; goto reset_validity; + } - result = -ENOMEM; if (datalen >= PAGE_SIZE) datalen = PAGE_SIZE - 1; data = kmalloc(datalen + 1, GFP_KERNEL); - if (!data) + if (!data) { + result = -ENOMEM; goto reset_validity; + } *(data + datalen) = '\0'; - - result = -EFAULT; - if (copy_from_user(data, buf, datalen)) + if (copy_from_user(data, buf, datalen)) { + result = -EFAULT; goto out_free; + } result = mutex_lock_interruptible(&ima_write_mutex); if (result < 0) -- 2.11.0
