Re: Allocation failure with subsequent kernel crash

From: Alexei Starovoitov
Date: Mon Aug 20 2018 - 01:22:35 EST


On Fri, Aug 17, 2018 at 10:17 AM tedheadster <tedheadster@xxxxxxxxx> wrote:
>
> I have been trying to bisect this crash but I have not found a
> reliable reproducer. My best guess is that it was introduced after the
> 4.14 release.
>
> This is a 32 bit kernel. It is odd in that it first generates a memory
> allocation failure, and then quickly crashes with a succeeding bug.
>
> I'm including the netdev group since there is a lot of BPF stacktrace.

I don't remember vzalloc issues that was fixed in this area.
4.14 kernel is quite old. Since then syzbot found few mem
related bugs that were fixed.
please try to reproduce on the latest tree.