Re: [PATCH] Remove broken netfilter binary sysctls from bridging code

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]


Eric W. Biederman wrote:
> [email protected] (Joseph Fannin) writes:
>>The netfilter sysctls in the bridging code don't set strategy routines:
>> sysctl table check failed: /net/bridge/bridge-nf-call-arptables .3.10.1 Missing
>> sysctl table check failed: /net/bridge/bridge-nf-call-iptables .3.10.2 Missing
>> sysctl table check failed: /net/bridge/bridge-nf-call-ip6tables .3.10.3 Missing
>> sysctl table check failed: /net/bridge/bridge-nf-filter-vlan-tagged .3.10.4
>>Missing strategy
>> sysctl table check failed: /net/bridge/bridge-nf-filter-pppoe-tagged .3.10.5
>>Missing strategy
>>    These binary sysctls can't work. The binary sysctl numbers of
>>other netfilter sysctls with this problem are being removed.  These
>>need to go as well.
>>Signed-off-by: Joseph Fannin <[email protected]>
> Acked-by: "Eric W. Biederman" <[email protected]>

Queued for 2.6.24, thanks.

> Hmm.  This is an interesting case.  The proc method is forcing
> the integer to be either 0 or 1 in a racy fashion.  But none of the
> users appear to depend upon that.
> So this is the least broken set of binary sysctls I have seen caught
> by my check.
> A really good fix would be to remove the binary side and then to
> modify brnf_sysctl_call_tables to allocate a temporary ctl_table and
> integer on the stack and only set ctl->data after we have normalized
> the written value.  But since in practice nothing cares about
> the race a better fix probably isn't worth it.

I seem to be missing something, the entire brnf_sysctl_call_tables
thing looks purely cosmetic to me, wouldn't it be better to simply
remove it?

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at
Please read the FAQ at

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux