linux-kernel - Re: dozens of sysbot reports

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Message-ID: <CAHk-=wjevysNdRU18Fs--ZciCd+DTDMFWptZcFBqbBa3Zco38w@mail.gmail.com>
Date:   Fri, 3 Sep 2021 16:11:18 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Eric Dumazet <edumazet@...gle.com>
Cc:     Eric Dumazet <eric.dumazet@...il.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: dozens of sysbot reports

On Fri, Sep 3, 2021 at 4:08 PM Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
>
> It had just added __GFP_NOWARN to hide the fact that it did crazy
> allocations and just wanted the craziest ones to fail silently.

.. and yes, we can make __GFP_NOWARN limit that WARN_ON_ONCE() too,
but the whole point of this really was to actually find people who
simply didn't check their arguments. So I'd rather add a few sanity
checks, than say "__GFP_NOWARN silences the sanity check too".

              Linus