On Fri, Jan 18, 2019 at 03:53:46PM +0300, Ilya Maximets wrote:
> On 18.01.2019 14:18, Toms Atteka wrote:
> > memmove byte count was calculated incorrectly as ofpbuf_put_uninit
> > is increasing b->size by n.
> > 
> > This patch fixes it by deducing byte count by n.
> > 
> > Reported-at: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12296
> > Signed-off-by: Toms Atteka <[email protected]>
> > ---
> >  lib/ofpbuf.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> > 
> > diff --git a/lib/ofpbuf.c b/lib/ofpbuf.c
> > index 9c06236..91a5295 100644
> > --- a/lib/ofpbuf.c
> > +++ b/lib/ofpbuf.c
> > @@ -469,9 +469,9 @@ void
> >  ofpbuf_insert(struct ofpbuf *b, size_t offset, const void *data, size_t n)
> >  {
> >      if (offset < b->size) {
> > -        ofpbuf_put_uninit(b, n);
> > +        ofpbuf_put_uninit(b, n); // b->size gets increased
> 
> Please, don't use C99 style comments. Use /* */ instead.

I fixed that up, applied this to master and then backported it as far as
branch-2.6.
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