On Thu, 2023-08-31 at 23:34 +0800, Xu Kuohai wrote:
> On 8/31/2023 11:03 PM, Eduard Zingerman wrote:
> > On Thu, 2023-08-31 at 13:52 +0300, Eduard Zingerman wrote:
> > > On Wed, 2023-08-30 at 23:07 +0200, Jiri Olsa wrote:
> > > > On Wed, Aug 30, 2023 at 08:58:11PM +0200, Jiri Olsa wrote:
> > > > > hi,
> > > > > I'm hitting crash below on bpf-next/master when running selftests,
> > > > > full log and config attached
> > > >
> > > > it seems to be 'test_progs -t sockmap_listen' triggering that
> > >
> > > Hi,
> > >
> > > I hit it as well, use the following command to reproduce:
> > >
> > > for i in $(seq 1 100); do \
> > > ./test_progs -a 'sockmap_listen/sockmap VSOCK test_vsock_redir' \
> > > | grep Summary; \
> > > done
> > >
> >
> > For what its worth, bisect points to the following commit:
> > 147f3efaa241 ("sched/fair: Implement an EEVDF-like scheduling policy")
> >
> > Which was merged into bpf-next 3 days ago as a part of:
> > 3ca9a836ff53 ("Merge tag 'sched-core-2023-08-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip")
> >
> > Scheduling changes uncovered some old race condition?
> >
>
> As replied in another mail, I think the issue is introduced by this commit:
>
> 405df89dd52c ("bpf, sockmap: Improved check for empty queue")
Sorry, missed sibling sub-thread.
