From: Dan Carpenter <dan.carpenter@oracle.com>
To: Trond Myklebust <trond.myklebust@primarydata.com>
Cc: linux-nfs@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch] NFS: a couple off by ones
Date: Tue, 16 Dec 2014 23:52:26 +0000 [thread overview]
Message-ID: <20141216235225.GB31467@mwanda> (raw)
These tests are off by one because if len = sizeof(nfs_export_path)
then we have truncated the name.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/fs/nfs/nfsroot.c b/fs/nfs/nfsroot.c
index cd3c910..9bc9f04 100644
--- a/fs/nfs/nfsroot.c
+++ b/fs/nfs/nfsroot.c
@@ -261,11 +261,11 @@ static int __init root_nfs_data(char *cmdline)
*/
len = snprintf(nfs_export_path, sizeof(nfs_export_path),
tmp, utsname()->nodename);
- if (len > (int)sizeof(nfs_export_path))
+ if (len >= (int)sizeof(nfs_export_path))
goto out_devnametoolong;
len = snprintf(nfs_root_device, sizeof(nfs_root_device),
"%pI4:%s", &servaddr, nfs_export_path);
- if (len > (int)sizeof(nfs_root_device))
+ if (len >= (int)sizeof(nfs_root_device))
goto out_devnametoolong;
retval = 0;
reply other threads:[~2014-12-16 23:52 UTC|newest]
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