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authorEric W. Biederman <ebiederm@xmission.com>2019-01-30 16:58:38 +0300
committerTrond Myklebust <trond.myklebust@hammerspace.com>2019-02-21 01:33:55 +0300
commit40cc394be1aa18848b8757e03bd8ed23281f572e (patch)
treee33e19294ff39b79f35eaf4cc711401e8865b905 /fs/nfs
parente3735c89985415f4fb509c67963e3d05969fbdb1 (diff)
downloadlinux-40cc394be1aa18848b8757e03bd8ed23281f572e.tar.xz
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: 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>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/super.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 0570391eaa16..23790c7b2289 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -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)