OK, bisecting (was a bit of a bother since we merge upstream releases into our
tree, is there a way to just bisect that?)
Result was commit "net: sch_generic: aviod concurrent reset and enqueue op for
lockless qdisc" (749cc0b0c7f3dcdfe5842f998c0274e54987384f)
Reverting that commit on top of our tree made it work again. How to fix?
Jocke
On Mon, 2020-10-26 at 12:31 -0600, David Ahern wrote:
>
> On 10/26/20 6:58 AM, Joakim Tjernlund wrote:
> > Ping (maybe it should read "arping" instead :)
> >
> > Jocke
> >
> > On Thu, 2020-10-22 at 17:19 +0200, Joakim Tjernlund wrote:
> > > strace arping -q -c 1 -b -U -I eth1 0.0.0.0
> > > ...
> > > sendto(3, "\0\1\10\0\6\4\0\1\0\6\234\v\6
> > > \v\v\v\v\377\377\377\377\377\377\0\0\0\0", 28, 0, {sa_family=AF_PACKET,
> > > proto=0x806, if4, pkttype=PACKET_HOST, addr(6)={1, ffffffffffff},
> > > 20) = -1 ENOBUFS (No buffer space available)
> > > ....
> > > and then arping loops.
> > >
> > > in 4.19.127 it was:
> > > sendto(3,
> > > "\0\1\10\0\6\4\0\1\0\6\234\5\271\362\n\322\212E\377\377\377\377\377\377\0\0\0\0",
> > > 28, 0, {sa_family=AF_PACKET, proto=0x806, if4, pkttype=PACKET_HOST,
> > > addr(6)={1,
> > > ffffffffffff}, 20) = 28
> > >
> > > Seems like something has changed the IP behaviour between now and then ?
> > > eth1 is UP but not RUNNING and has an IP address.
> > >
> > > Jocke
> >
>
> do a git bisect between the releases to find out which commit is causing
> the change in behavior.
