From: Eric W. Biederman ebiederm@xmission.com
[ Upstream commit 40cc394be1aa18848b8757e03bd8ed23281f572e ]
In the rare and unsupported case of a hostname list nfs_parse_devname will modify dev_name. There is no need to modify dev_name as the all that is being computed is the length of the hostname, so the computed length can just be shorted.
Fixes: dc04589827f7 ("NFS: Use common device name parsing logic for NFSv4 and NFSv2/v3") Signed-off-by: "Eric W. Biederman" ebiederm@xmission.com Signed-off-by: Trond Myklebust trond.myklebust@hammerspace.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/nfs/super.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/nfs/super.c b/fs/nfs/super.c index dced329a85844..47a7751146cf5 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -1901,7 +1901,7 @@ static int nfs_parse_devname(const char *dev_name, /* kill possible hostname list: not supported */ comma = strchr(dev_name, ','); if (comma != NULL && comma < end) - *comma = 0; + len = comma - dev_name; }
if (len > maxnamlen)