Re: kernel BUG at mm/vmalloc.c:LINE! (2)

[Dmitry Vyukov]

On Sun, Jan 10, 2021 at 10:34 PM syzbot
<syzbot+5f326d255ca648131f87@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit 537cf4e3cc2f6cc9088dcd6162de573f603adc29
> Author: Magnus Karlsson <magnus.karlsson@xxxxxxxxx>
> Date:   Fri Nov 20 11:53:39 2020 +0000
>
>     xsk: Fix umem cleanup bug at socket destruct
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=139f3dfb500000
> start commit:   e87d24fc Merge branch 'net-iucv-fixes-2020-11-09'
> git tree:       net
> kernel config:  https://syzkaller.appspot.com/x/.config?x=61033507391c77ff
> dashboard link: https://syzkaller.appspot.com/bug?extid=5f326d255ca648131f87
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=10d10006500000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=126c9eaa500000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: xsk: Fix umem cleanup bug at socket destruct
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

FTR, the bisection log looks clean, but this does not look like the
fix for this. The reproducer does not destroy sockets.