From: Vincenzo Frascino <vincenzo.frascino@arm.com>
To: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Konovalov <andreyknvl@google.com>,
syzbot <syzbot+2a52b6c31dbefb1e9d9f@syzkaller.appspotmail.com>,
Amit Kachhap <amit.kachhap@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
LKML <linux-kernel@vger.kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
mbenes@suse.cz, syzkaller-bugs <syzkaller-bugs@googlegroups.com>,
Will Deacon <will@kernel.org>, Mark Brown <broonie@kernel.org>
Subject: Re: KASAN: invalid-access Read in kmem_cache_destroy
Date: Thu, 28 Jan 2021 13:29:23 +0000 [thread overview]
Message-ID: <aa1336d9-88d7-0d67-8eb4-8fb63ed181ee@arm.com> (raw)
In-Reply-To: <CACT4Y+bwbHpp4H0UuEd41xfiPSBqrw7KUSKLAqR_fusP8hDHAw@mail.gmail.com>
On 1/28/21 12:43 PM, Dmitry Vyukov wrote:
> On Thu, Jan 28, 2021 at 1:30 PM Vincenzo Frascino
> <vincenzo.frascino@arm.com> wrote:
>>
>> On 1/27/21 7:50 PM, Andrey Konovalov wrote:
>>> On Wed, Jan 27, 2021 at 6:44 PM Mark Brown <broonie@kernel.org> wrote:
>>>>
>>>> On Wed, Jan 27, 2021 at 06:14:13PM +0100, Dmitry Vyukov wrote:
>>>>> On Wed, Jan 27, 2021 at 5:58 PM syzbot
>>>>> <syzbot+2a52b6c31dbefb1e9d9f@syzkaller.appspotmail.com> wrote:
>>>>>>
>>>>>> Hello,
>>>>>>
>>>>>> syzbot found the following issue on:
>>>>>>
>>>>>> HEAD commit: 2ab38c17 mailmap: remove the "repo-abbrev" comment
>>>>>> git tree: upstream
>>>>>> console output: https://syzkaller.appspot.com/x/log.txt?x=12eb4ad8d00000
>>>>>> kernel config: https://syzkaller.appspot.com/x/.config?x=ad43be24faf1194c
>>>>>> dashboard link: https://syzkaller.appspot.com/bug?extid=2a52b6c31dbefb1e9d9f
>>>>>> userspace arch: arm64
>>>>>>
>>>>>> Unfortunately, I don't have any reproducer for this issue yet.
>>>>>>
>>>>>> IMPORTANT: if you fix the issue, please add the following tag to the commit:
>>>>>> Reported-by: syzbot+2a52b6c31dbefb1e9d9f@syzkaller.appspotmail.com
>>>>>
>>>>> This happens on arm64 instance with MTE enabled.
>>>>> I don't see any corresponding reports on x86_64. So I would assume
>>>>> it's a generic latent bug, or probably more likely a bug in MTE
>>>>> support.
>>>>
>>>> Copying in Vincenso who's done a bunch of MTE stuff recently.
>>>
>>> Could be the same issue as:
>>>
>>> https://lkml.org/lkml/2021/1/27/1109
>>>
>>
>> I had a look at the trace and I agree with Andrey it seems the same issue.
>
>
> #syz fix: Revert "mm/slub: fix a memory leak in sysfs_slab_add()"
>
Thanks for the confirmation.
--
Regards,
Vincenzo
next prev parent reply other threads:[~2021-01-28 13:26 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-27 16:58 syzbot
2021-01-27 17:14 ` Dmitry Vyukov
2021-01-27 17:43 ` Mark Brown
2021-01-27 19:50 ` Andrey Konovalov
2021-01-28 12:34 ` Vincenzo Frascino
2021-01-28 12:43 ` Dmitry Vyukov
2021-01-28 13:29 ` Vincenzo Frascino [this message]
2021-05-03 8:30 ` Dmitry Vyukov
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