There is no reason to continue after a copy_from_user() failure. Fixes: ab7ac4eb9832 ("kcm: Kernel Connection Multiplexor module") Cc: Tom Herbert <t...@herbertland.com> Signed-off-by: Cong Wang <xiyou.wangc...@gmail.com> --- net/kcm/kcmsock.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/kcm/kcmsock.c b/net/kcm/kcmsock.c index 309062f..31762f7 100644 --- a/net/kcm/kcmsock.c +++ b/net/kcm/kcmsock.c @@ -1687,7 +1687,7 @@ static int kcm_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) struct kcm_attach info; if (copy_from_user(&info, (void __user *)arg, sizeof(info))) - err = -EFAULT; + return -EFAULT; err = kcm_attach_ioctl(sock, &info); @@ -1697,7 +1697,7 @@ static int kcm_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) struct kcm_unattach info; if (copy_from_user(&info, (void __user *)arg, sizeof(info))) - err = -EFAULT; + return -EFAULT; err = kcm_unattach_ioctl(sock, &info); @@ -1708,7 +1708,7 @@ static int kcm_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) struct socket *newsock = NULL; if (copy_from_user(&info, (void __user *)arg, sizeof(info))) - err = -EFAULT; + return -EFAULT; err = kcm_clone(sock, &info, &newsock); -- 2.5.5