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ovl: add WARN_ON() for non-dir redirect cases

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Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Miklos Szeredi 2018-04-12 12:04:49 +02:00
parent 0471a9cdb0
commit 3a291774d1
1 changed files with 11 additions and 0 deletions
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11
fs/overlayfs/namei.c
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@ -256,6 +256,12 @@ static int ovl_lookup_single(struct dentry *base, struct ovl_lookup_data *d,
d->stop = true;
if (d->is_dir)
goto put_and_out;
/*
* NB: handle failure to lookup non-last element when non-dir
* redirects become possible
*/
WARN_ON(!last_element);
goto out;
}
if (last_element)
@ -1006,6 +1012,11 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry,
if (IS_ERR(inode))
goto out_free_oe;
/*
* NB: handle redirected hard links when non-dir redirects
* become possible
*/
WARN_ON(OVL_I(inode)->redirect);
OVL_I(inode)->redirect = upperredirect;
}