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From:   Dmitry Vyukov <dvyukov@google.com>
Date:   Wed, 17 Jan 2018 18:16:08 +0100
Message-ID: <CACT4Y+YuA0UZBfj5mTYoeb9B+VsXpYGQ_FYbrJc4FmW5NpphKA@mail.gmail.com>
Subject: Re: LKML admins (syzbot emails are not delivered)
To:     "Theodore Ts'o" <tytso@mit.edu>,
        Dmitry Vyukov <dvyukov@google.com>,
        "Eric W. Biederman" <ebiederm@xmission.com>,
        Pavel Machek <pavel@ucw.cz>, Mike Galbraith <efault@gmx.de>,
        LKML <linux-kernel@vger.kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        syzkaller <syzkaller@googlegroups.com>
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On Wed, Jan 17, 2018 at 5:53 PM, Theodore Ts'o <tytso@mit.edu> wrote:
> On Wed, Jan 17, 2018 at 09:06:54AM +0100, Dmitry Vyukov wrote:
>> I've also mailed a change to appengine that supports *.c, *.log and
>> *.patch as text/plain extensions. There does not seem to be any major
>> objects to it, but it will probably take some time to be deployed in
>> prod. After that I will rename them back.
>
> I would think the ideal change would be one where one could specify an
> optional parameter to the appengine API which would override the
> default content/type, but adding some additional defaults
> for various magic extentions is probably a simpler change.

Agree, but as far as I understand it is specifically restricted. You
can see docs here:
https://cloud.google.com/appengine/docs/standard/php/mail/mail-with-headers-attachments
It also does not allow sending .exe, .com, .bat, etc at all.
The support for log/patch/c will at least solve all problems for syzbot.