[PATCH] nfsservctl(): remove user-triggerable printk

A user can use nfsservctl() to spam the logs.

This can happen because the arguments to the nfsservctl() system call are
versioned.  This is a good thing.  However, when a bad version is detected,
the kernel prints a message and then returns an error.

Signed-off-by: Peter Staubach <staubach@redhat.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/fs/nfsctl.c b/fs/nfsctl.c
index 0d4cf94..1c72c7f 100644 (file)
--- a/fs/nfsctl.c
+++ b/fs/nfsctl.c
@@ -98,10 +98,8 @@ asmlinkage sys_nfsservctl(int cmd, struct nfsctl_arg __user *arg, void __user *r
        if (copy_from_user(&version, &arg->ca_version, sizeof(int)))
                return -EFAULT;
 
-       if (version != NFSCTL_VERSION) {
-               printk(KERN_WARNING "nfsd: incompatible version in syscall.\n");
+       if (version != NFSCTL_VERSION)
                return -EINVAL;
-       }
 
        if (cmd < 0 || cmd >= sizeof(map)/sizeof(map[0]) || !map[cmd].name)
                return -EINVAL;