diff options
| author |   Harald Welte <laforge@netfilter.org> | 2005-11-03 20:17:51 +0100 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@mandriva.com> | 2005-11-05 01:23:34 -0200 |
| commit | d2a7bb7141a1fac7b11523538b2d2407e928baeb (patch) | |
| tree | 67fdabbfbdc0b53154a4f6aa1a33c383db02bfb2 /net/ipv4/netfilter/ip_nat_core.c | |
| parent | [NETFILTER] PPTP helper: Fix endianness bug in GRE key / CallID NAT (diff) | |
| download | linux-dev-d2a7bb7141a1fac7b11523538b2d2407e928baeb.tar.xz linux-dev-d2a7bb7141a1fac7b11523538b2d2407e928baeb.zip | |
[NETFILTER] NAT: Fix module refcount dropping too far
The unknown protocol is used as a fallback when a protocol isn't known.
Hence we cannot handle it failing, so don't set ".me". It's OK, since we
only grab a reference from within the same module (iptable_nat.ko), so we
never take the module refcount from 0 to 1.
Also, remove the "protocol is NULL" test: it's never NULL.
Signed-off-by: Rusty Rusty <rusty@rustcorp.com.au>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Diffstat (limited to '')
| -rw-r--r-- | net/ipv4/netfilter/ip_nat_core.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/net/ipv4/netfilter/ip_nat_core.c b/net/ipv4/netfilter/ip_nat_core.c index c5e3abd24672..762f4d93936b 100644 --- a/net/ipv4/netfilter/ip_nat_core.c +++ b/net/ipv4/netfilter/ip_nat_core.c @@ -66,10 +66,8 @@ ip_nat_proto_find_get(u_int8_t protonum) * removed until we've grabbed the reference */ preempt_disable(); p = __ip_nat_proto_find(protonum); - if (p) { - if (!try_module_get(p->me)) - p = &ip_nat_unknown_protocol; - } + if (!try_module_get(p->me)) + p = &ip_nat_unknown_protocol; preempt_enable(); return p; |