On Fri, Mar 28, 2014 at 01:54:32PM +0400, Andrey Vagin wrote: > "len" contains sizeof(nf_ct_ext) and size of extensions. In a worst > case it can contain all extensions. Bellow you can find sizes for all > types of extensions. Their sum is definitely bigger than 256. > > nf_ct_ext_types[0]->len = 24 > nf_ct_ext_types[1]->len = 32 > nf_ct_ext_types[2]->len = 24 > nf_ct_ext_types[3]->len = 32 > nf_ct_ext_types[4]->len = 152 > nf_ct_ext_types[5]->len = 2 > nf_ct_ext_types[6]->len = 16 > nf_ct_ext_types[7]->len = 8 > > I have seen "len" up to 280 and my host has crashes w/o this patch. > > The right way to fix this problem is reducing the size of the ecache > extension (4) and Florian is going to do this, but these changes will > be quite large to be appropriate for a stable tree. > > v2: rearrange the extension so ECACHE comes last. This is required to > prevent overflow of nf_ct_ext->offset. > v3: The previous attempt of rearranging constants doesn't work here, > because extensions may be added in a random order. Applied, thanks. -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
