Re: [PATCH] nfs client, kernel 2.4.31: readlink result overflow

[Assar]

Marcelo Tosatti <marcelo.tosatti@xxxxxxxxxxxx> writes:
> > That's one problem.
> > 
> > > If thats the reason, you don't need the "-1" there?
> > 
> > It also writes a 0 byte.  I think it looks like this:
> > 
> > ---- ------------ -
> > len  string...    0
> 
> If an overflow happens (len > rcvbuf->page_len) the last character will get 
> truncated anyway, so there is no need for the "-1" AFAICS.

I'm not sure I follow.

The code writes a 0 at rcvbuf->pages[0][sizeof(u32) + len], right?
Doesn't that make the maximum allowed value of len should be
'rcvbuf->page_len - sizeof(u32) - 1' ?
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