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| author | Bernhard Thaler <bernhard.thaler@wvnet.at> | 2015-05-28 10:26:18 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-06-24 10:15:31 -0700 |
| commit | ebd3d550701d6a3304e57e356a9418f1a73a998f (patch) | |
| tree | 38d1f6dd7f101cd131769051b464f3e1c0304a64 | |
| parent | 470bb76d8a5cd5e38a491cb331bb416e19fc8624 (diff) | |
| download | lwn-ebd3d550701d6a3304e57e356a9418f1a73a998f.tar.gz lwn-ebd3d550701d6a3304e57e356a9418f1a73a998f.zip | |
Revert "netfilter: ensure number of counters is >0 in do_replace()"
commit d26e2c9ffa385dd1b646f43c1397ba12af9ed431 upstream.
This partially reverts commit 1086bbe97a07 ("netfilter: ensure number of
counters is >0 in do_replace()") in net/bridge/netfilter/ebtables.c.
Setting rules with ebtables does not work any more with 1086bbe97a07 place.
There is an error message and no rules set in the end.
e.g.
~# ebtables -t nat -A POSTROUTING --src 12:34:56:78:9a:bc -j DROP
Unable to update the kernel. Two possible causes:
1. Multiple ebtables programs were executing simultaneously. The ebtables
userspace tool doesn't by default support multiple ebtables programs
running
Reverting the ebtables part of 1086bbe97a07 makes this work again.
Signed-off-by: Bernhard Thaler <bernhard.thaler@wvnet.at>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | net/bridge/netfilter/ebtables.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c index 42ee65e1bc7f..1059ed3bc255 100644 --- a/net/bridge/netfilter/ebtables.c +++ b/net/bridge/netfilter/ebtables.c @@ -1105,8 +1105,6 @@ static int do_replace(struct net *net, const void __user *user, return -ENOMEM; if (tmp.num_counters >= INT_MAX / sizeof(struct ebt_counter)) return -ENOMEM; - if (tmp.num_counters == 0) - return -EINVAL; tmp.name[sizeof(tmp.name) - 1] = 0; @@ -2152,8 +2150,6 @@ static int compat_copy_ebt_replace_from_user(struct ebt_replace *repl, return -ENOMEM; if (tmp.num_counters >= INT_MAX / sizeof(struct ebt_counter)) return -ENOMEM; - if (tmp.num_counters == 0) - return -EINVAL; memcpy(repl, &tmp, offsetof(struct ebt_replace, hook_entry)); |