Commit 40cc394b authored Jan 30, 2019 by Eric W. Biederman Committed by Trond Myklebust Feb 20, 2019

fs/nfs: Fix nfs_parse_devname to not modify it's argument

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: dc045898 ("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>

parent e3735c89

fs/nfs/super.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1919,7 +1919,7 @@ 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)

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