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Date: Tue, 31 Jan 2017 12:31:41 +0300
From: "Kirill A. Shutemov" <kirill@shutemov.name>
Subject: Re: mm: sleeping function called from invalid context
 shmem_undo_range
Message-ID: <20170131093141.GA15899@node.shutemov.name>
References: <CACT4Y+Y+mAg82iUD4gMA_DPoEBzjA3uO=kVki1x9NCJRQKwhHg@mail.gmail.com>
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To: Dmitry Vyukov <dvyukov@google.com>
Cc: Hugh Dickins <hughd@google.com>, "linux-mm@kvack.org" <linux-mm@kvack.org>, LKML <linux-kernel@vger.kernel.org>, Andrew Morton <akpm@linux-foundation.org>, Johannes Weiner <hannes@cmpxchg.org>, Vlastimil Babka <vbabka@suse.cz>, Andrey Ryabinin <aryabinin@virtuozzo.com>, syzkaller <syzkaller@googlegroups.com>

On Tue, Jan 31, 2017 at 09:27:41AM +0100, Dmitry Vyukov wrote:
> Hello,
> 
> I've got the following report while running syzkaller fuzzer on
> fd694aaa46c7ed811b72eb47d5eb11ce7ab3f7f1:

This should help: