From: Andrew Morton <akpm@linux-foundation.org>
To: Dmitry Vyukov <dvyukov@google.com>
Cc: nyc@holomorphy.com, Michal Hocko <mhocko@suse.com>,
Mike Kravetz <mike.kravetz@oracle.com>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Andrea Arcangeli <aarcange@redhat.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>,
Andrey Ryabinin <aryabinin@virtuozzo.com>
Subject: Re: mm: BUG in resv_map_release
Date: Tue, 28 Mar 2017 16:38:23 -0700 [thread overview]
Message-ID: <20170328163823.3a0445a058670be9254e115c@linux-foundation.org> (raw)
In-Reply-To: <CACT4Y+Z-trVe0Oqzs8c+mTG6_iL7hPBBFgOm0p0iQsCz9Q2qiw@mail.gmail.com>
On Thu, 23 Mar 2017 11:19:38 +0100 Dmitry Vyukov <dvyukov@google.com> wrote:
> Hello,
>
> I've got the following BUG while running syzkaller fuzzer.
> Note the injected kmalloc failure, most likely it's the root cause.
>
Yes, probably the logic(?) in region_chg() leaked a
resv->adds_in_progress++, although I'm not sure how. And afaict that
code can leak the memory at *nrg if the `trg' allocation attempt failed
on the second or later pass around the retry loop.
Blah. Does someone want to take a look at it?
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next prev parent reply other threads:[~2017-03-28 23:38 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-23 10:19 Dmitry Vyukov
2017-03-23 10:20 ` Dmitry Vyukov
2017-03-23 17:25 ` Mike Kravetz
2017-03-23 18:02 ` Mike Kravetz
2017-03-24 8:56 ` Dmitry Vyukov
2017-03-28 23:38 ` Andrew Morton [this message]
2017-03-29 0:07 ` Mike Kravetz
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