[lkml]   [2012]   [Dec]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: kernel panic when running /etc/init.d/iptables restart
On 2012/12/25 15:25, canqun zhang wrote:
> Hi Gao feng
> The stack information is as follows. The kenel will panic because the
> nf_ct_destroy is NULL.

It seems that nf_conntrack_l[3,4]proto_unregister doesn't make sure
nf_conns of the proto being destroyed.

If I'm right, there is another problem even your fix this panic problem.
the l3,14proto will be unregistered before all of it's nf_conns being destroyed.
So even nf_ct_destroy is not NULL,in destroy_conntrack we are not able to
find the right l4proto,the l4proto->destroy will be incorrect.resources will
not be released correctly.

So I think the root problem is we do register/unregister, set/unset both on the
first net (init_net), Maybe it's better to do register set on the first net, and
do unregister unset on the last net.

 \ /
  Last update: 2012-12-25 10:01    [W:0.045 / U:0.644 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site