linux-kernel - Re: Re: [BUG] ramfs system panic when using dd to create files

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Message-ID: <CAOH5QeCV3c-=RiwGrUn7214NRZye7wYFmPSyFWxw-0Zvk=j2GQ@mail.gmail.com>
Date:   Wed, 14 Jul 2021 22:30:22 +0800
From:   yong w <yongw.pur@...il.com>
To:     wuzhouhui <wuzhouhui14@...ls.ucas.ac.cn>
Cc:     linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        akpm@...ux-foundation.org, nico@...xnic.net, wang.yong12@....com.cn
Subject: Re: Re: [BUG] ramfs system panic when using dd to create files

Thanks for your reply!

> Limit max size of ramfs.
It's no use using size to limit the size of ramfs.
"mount -t ramfs -o size=10M ramfs /ramfs" is the command i use.

>
> The comments already explains why kernel should panic on this situation:
>             /*
>              * If we got here due to an actual allocation at the
>              * system level, we cannot survive this and will enter
>              * an endless loop in the allocator. Bail out now.
>              */
But it causes panic, actually , I don't want it panics