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| author | Markus Elfring <elfring@users.sourceforge.net> | 2016-08-21 20:17:36 +0200 |
|---|---|---|
| committer | Casey Schaufler <casey@schaufler-ca.com> | 2016-08-23 09:58:21 -0700 |
| commit | 63e24c497158c066583b9c06378d89ace694265a (patch) | |
| tree | a9ae72852efa1c4ed56968e501f226fd672e0308 /security | |
| parent | 29b4817d4018df78086157ea3a55c1d9424a7cfc (diff) | |
| download | linux-63e24c497158c066583b9c06378d89ace694265a.tar.gz linux-63e24c497158c066583b9c06378d89ace694265a.tar.xz | |
Smack: Use memdup_user() rather than duplicating its implementation
Reuse existing functionality from memdup_user() instead of keeping
duplicate source code.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Diffstat (limited to 'security')
| -rw-r--r-- | security/smack/smackfs.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/security/smack/smackfs.c b/security/smack/smackfs.c index e249a66db533..6492fe96cae4 100644 --- a/security/smack/smackfs.c +++ b/security/smack/smackfs.c @@ -2523,14 +2523,9 @@ static ssize_t smk_write_revoke_subj(struct file *file, const char __user *buf, if (count == 0 || count > SMK_LONGLABEL) return -EINVAL; - data = kzalloc(count, GFP_KERNEL); - if (data == NULL) - return -ENOMEM; - - if (copy_from_user(data, buf, count) != 0) { - rc = -EFAULT; - goto out_data; - } + data = memdup_user(buf, count); + if (IS_ERR(data)) + return PTR_ERR(data); cp = smk_parse_smack(data, count); if (IS_ERR(cp)) { |