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Date:   Mon, 22 Apr 2019 09:14:20 +0800
From:   Qu Wenruo <quwenruo.btrfs@....com>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     linux-arm-kernel@...ts.infradead.org,
        Ext4 <linux-ext4@...r.kernel.org>,
        Linux FS Devel <linux-fsdevel@...r.kernel.org>
Subject: Re: [aarch64] Kernel crash on v5.1-rc5,
 __arch_copy_from_user+0x1bc/0x240



On 2019/4/21 下午9:28, Matthew Wilcox wrote:
> On Sun, Apr 21, 2019 at 05:12:50PM +0800, Qu Wenruo wrote:
>>
>>
>> On 2019/4/21 下午4:20, 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?
> 
> You probably have faulty hardware:
> 
> https://community.arm.com/developer/ip-products/processors/f/cortex-a-forum/3205/re-what-is-serror-detailed-explanation-is-required
> 
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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