linux-kernel - Re: upstream kernel crashes

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Date:   Wed, 17 Aug 2022 08:58:20 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
Cc:     Dmitry Vyukov <dvyukov@...gle.com>,
        James.Bottomley@...senpartnership.com, andres@...razel.de,
        axboe@...nel.dk, c@...hat.com, davem@...emloft.net,
        edumazet@...gle.com, gregkh@...uxfoundation.org,
        jasowang@...hat.com, kuba@...nel.org, linux-kernel@...r.kernel.org,
        linux@...ck-us.net, martin.petersen@...cle.com,
        netdev@...r.kernel.org, pabeni@...hat.com,
        virtualization@...ts.linux-foundation.org,
        kasan-dev@...glegroups.com, mst@...hat.com
Subject: Re: upstream kernel crashes

On Tue, Aug 16, 2022 at 11:47 PM Xuan Zhuo <xuanzhuo@...ux.alibaba.com> wrote:
>
> +       BUG_ON(num != virtqueue_get_vring_size(vq));
> +

Please, no more BUG_ON.

Add a WARN_ON_ONCE() and return an  error.

           Linus