From: Al Viro <viro@ZenIV.linux.org.uk>
Date: Sun, 5 Jun 2011 00:37:35 +0000 (+0000)
Subject: get_net_ns_by_fd() oopses if proc_ns_fget() returns an error
X-Git-Tag: v3.0-rc3~13^2~34
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c316e6a3084cef1a5857cd66bb5429c969f06c93;p=pandora-kernel.git

get_net_ns_by_fd() oopses if proc_ns_fget() returns an error

BTW, looking through the code related to struct net lifetime rules has
caught something else:

struct net *get_net_ns_by_fd(int fd)
{
        ...
        file = proc_ns_fget(fd);
        if (!file)
                goto out;

        ei = PROC_I(file->f_dentry->d_inode);

while in proc_ns_fget() we have two return ERR_PTR(...) and not a single
path that would return NULL.  The other caller of proc_ns_fget() treats
ERR_PTR() correctly...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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