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| author | Eric W. Biederman <ebiederm@xmission.com> | 2014-12-05 20:03:28 -0600 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2014-12-11 18:07:06 -0600 |
| commit | 36476beac4f8ca9dc7722790b2e8ef0e8e51034e (patch) | |
| tree | 26eb0855cf23ff3978821e2e5ab42d6df7902ccb | |
| parent | 66d2f338ee4c449396b6f99f5e75cd18eb6df272 (diff) | |
| download | lwn-36476beac4f8ca9dc7722790b2e8ef0e8e51034e.tar.gz lwn-36476beac4f8ca9dc7722790b2e8ef0e8e51034e.zip | |
userns; Correct the comment in map_write
It is important that all maps are less than PAGE_SIZE
or else setting the last byte of the buffer to '0'
could write off the end of the allocated storage.
Correct the misleading comment.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
| -rw-r--r-- | kernel/user_namespace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c index a2e37c5d2f63..ad419b04c146 100644 --- a/kernel/user_namespace.c +++ b/kernel/user_namespace.c @@ -643,7 +643,7 @@ static ssize_t map_write(struct file *file, const char __user *buf, if (!page) goto out; - /* Only allow <= page size writes at the beginning of the file */ + /* Only allow < page size writes at the beginning of the file */ ret = -EINVAL; if ((*ppos != 0) || (count >= PAGE_SIZE)) goto out; |