linux-kernel - Re: [syzbot] upstream test error: BUG: sleeping function called from invalid context in stack_depot

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Message-ID: <CANpmjNP+MhERRyixhHo55Fr99G0OggGwS6-KiUFx_99earQhqA@mail.gmail.com>
Date:   Tue, 26 Oct 2021 16:27:55 +0200
From:   Marco Elver <elver@...gle.com>
To:     syzbot <syzbot+e45919db2eab5e837646@...kaller.appspotmail.com>
Cc:     akpm@...ux-foundation.org, dan.carpenter@...cle.com,
        desmondcheongzx@...il.com, dvyukov@...gle.com, hdanton@...a.com,
        kasan-dev@...glegroups.com, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, mgorman@...hsingularity.net,
        syzkaller-bugs@...glegroups.com, tonymarislogistics@...dex.com
Subject: Re: [syzbot] upstream test error: BUG: sleeping function called from
 invalid context in stack_depot_save

#syz fix: mm/page_alloc: avoid page allocator recursion with pagesets.lock held

On Tue, 26 Oct 2021 at 16:08, syzbot
<syzbot+e45919db2eab5e837646@...kaller.appspotmail.com> wrote:
>
> This bug is marked as fixed by commit:
> 187ad460b841 ("mm/page_alloc: avoid page allocator recursion with pagesets.lock held")

Looks like Dan's "#syz fix" made syzbot think that the title is the above.

The reason that the commit title only is preferred is that commits in
trees like -mm don't have stable hashes. Maybe if the hash is known to
persist the alternative format could be useful.