Re: compat ebtables broke in syzkaller

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Dmitry Vyukov <dvyukov@xxxxxxxxxx> wrote:
> One question:
> 
> > We will need to special-case compat_table_info() in ebtables.c to
> > either not allocate the compat array for nentries == 0, or pretend
> > it was 1.
> 
> nentries == 0 is returned to us by EBT_SO_GET_INIT_INFO, and I think
> there are actually 3 or 4 entries, and we do want to get all of them
> (to restore them later). If EBT_SO_GET_INIT_ENTRIES will give us no
> entries (or 1 entry), then we won't be able to restore them later. Am
> I missing something?

nentries are the user-defined entries, and there are none in the initial
(empty) table, so this should be fine.
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