Subject: Re: [aarch64] Kernel crash on v5.1-rc5,
 __arch_copy_from_user+0x1bc/0x240
To:     Matthew Wilcox <willy@infradead.org>
Cc:     linux-arm-kernel@lists.infradead.org,
        Ext4 <linux-ext4@vger.kernel.org>,
        Linux FS Devel <linux-fsdevel@vger.kernel.org>
References: <58a2439c-f92a-4053-702e-5cc65d38fff5@gmx.com>
 <6a867ea5-c389-30b9-1c84-3be5682146b5@gmx.com>
 <20190421132840.GK7751@bombadil.infradead.org>
From:   Qu Wenruo <quwenruo.btrfs@gmx.com>
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Message-ID: <09135f7a-874e-5ea0-164a-306ca3db2799@gmx.com>
Date:   Mon, 22 Apr 2019 09:14:20 +0800
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From: Qu Wenruo <quwenruo.btrfs@gmx.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: linux-arm-kernel@lists.infradead.org, Ext4 <linux-ext4@vger.kernel.org>,
 Linux FS Devel <linux-fsdevel@vger.kernel.org>
Message-ID: <09135f7a-874e-5ea0-164a-306ca3db2799@gmx.com>
Subject: Re: [aarch64] Kernel crash on v5.1-rc5,
 __arch_copy_from_user+0x1bc/0x240
References: <58a2439c-f92a-4053-702e-5cc65d38fff5@gmx.com>
 <6a867ea5-c389-30b9-1c84-3be5682146b5@gmx.com>
 <20190421132840.GK7751@bombadil.infradead.org>
In-Reply-To: <20190421132840.GK7751@bombadil.infradead.org>

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On 2019/4/21 =E4=B8=8B=E5=8D=889:28, Matthew Wilcox wrote:
> On Sun, Apr 21, 2019 at 05:12:50PM +0800, Qu Wenruo wrote:
>>
>>
>> On 2019/4/21 =E4=B8=8B=E5=8D=884:20, Qu Wenruo wrote:
>>> Hi,
>>>
>>> Just hit one crash on v5.1-rc5 kernel, on ext4 filesystem.
>>
>> Well, also hit the same one in v5.0.8 kernel.
>>
>> Exact the same backtrace.
>>
>> Really not sure which part is to blame, ARM or ext4?
>=20
> You probably have faulty hardware:
>=20
> https://community.arm.com/developer/ip-products/processors/f/cortex-a-f=
orum/3205/re-what-is-serror-detailed-explanation-is-required
>=20
You're right.

I tried memtester, and kernel also crashed.

Maybe it's really faulty memory or I'm using wrong memory speed.

Anyway, thanks for the info,
Qu


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