diff options
| author | Patrick McHardy <kaber@trash.net> | 2005-07-22 21:51:03 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2005-07-22 21:51:03 +0200 |
| commit | 21f930e4abdcb9649f26e5b959c14dddee4e600b (patch) | |
| tree | 524b3bfee593f20a52fab80c7bb4da3ac0ad3ad8 /net | |
| parent | [NETFILTER]: Fix potential memory corruption in NAT code (aka memory NAT) (diff) | |
| download | linux-21f930e4abdcb9649f26e5b959c14dddee4e600b.tar.xz linux-21f930e4abdcb9649f26e5b959c14dddee4e600b.zip | |
[NETFILTER]: Wait until all references to ip_conntrack_untracked are dropped on unload
Fixes a crash when unloading ip_conntrack.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/netfilter/ip_conntrack_core.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ipv4/netfilter/ip_conntrack_core.c b/net/ipv4/netfilter/ip_conntrack_core.c index 14af55cad5d6..63bf88264980 100644 --- a/net/ipv4/netfilter/ip_conntrack_core.c +++ b/net/ipv4/netfilter/ip_conntrack_core.c @@ -1107,6 +1107,9 @@ void ip_conntrack_cleanup(void) schedule(); goto i_see_dead_people; } + /* wait until all references to ip_conntrack_untracked are dropped */ + while (atomic_read(&ip_conntrack_untracked.ct_general.use) > 1) + schedule(); kmem_cache_destroy(ip_conntrack_cachep); kmem_cache_destroy(ip_conntrack_expect_cachep); |