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| author | Jiri Slaby <jslaby@suse.cz> | 2010-01-10 00:43:03 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-01-10 13:27:57 -0800 |
| commit | c3f6c21d6e60e39c81c27f18ebad9c7615eff545 (patch) | |
| tree | dd727510c7263325fabafd6f75893d65b6af71df /net/ipv6/proc.c | |
| parent | 51f5300682f5925a11edfddfd47ed47376871974 (diff) | |
| download | lwn-c3f6c21d6e60e39c81c27f18ebad9c7615eff545.tar.gz lwn-c3f6c21d6e60e39c81c27f18ebad9c7615eff545.zip | |
NET: ipv6, remove unnecessary check
Stanse found a potential null dereference in snmp6_unregister_dev.
There is a check for idev being NULL, but it is dereferenced
earlier. But idev cannot be NULL when passed to
snmp6_unregister_dev, so remove the test.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: "Pekka Savola (ipv6)" <pekkas@netcore.fi>
Cc: James Morris <jmorris@namei.org>
Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Cc: Patrick McHardy <kaber@trash.net>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/proc.c')
| -rw-r--r-- | net/ipv6/proc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/proc.c b/net/ipv6/proc.c index c9605c3ad91f..7b197b7132e0 100644 --- a/net/ipv6/proc.c +++ b/net/ipv6/proc.c @@ -259,7 +259,7 @@ int snmp6_unregister_dev(struct inet6_dev *idev) struct net *net = dev_net(idev->dev); if (!net->mib.proc_net_devsnmp6) return -ENOENT; - if (!idev || !idev->stats.proc_dir_entry) + if (!idev->stats.proc_dir_entry) return -EINVAL; remove_proc_entry(idev->stats.proc_dir_entry->name, net->mib.proc_net_devsnmp6); |