linux-kernel - Re: [PATCH v2 0/5] mm/hwpoison: Fix regressions in memory failure handling

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Message-ID: <3437892f-60ed-4e76-9028-7feac46425e4@linux.alibaba.com>
Date: Wed, 19 Feb 2025 14:04:39 +0800
From: Shuai Xue <xueshuai@...ux.alibaba.com>
To: "Luck, Tony" <tony.luck@...el.com>, Borislav Petkov <bp@...en8.de>
Cc: "nao.horiguchi@...il.com" <nao.horiguchi@...il.com>,
 "tglx@...utronix.de" <tglx@...utronix.de>,
 "mingo@...hat.com" <mingo@...hat.com>,
 "dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
 "x86@...nel.org" <x86@...nel.org>, "hpa@...or.com" <hpa@...or.com>,
 "linmiaohe@...wei.com" <linmiaohe@...wei.com>,
 "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
 "peterz@...radead.org" <peterz@...radead.org>,
 "jpoimboe@...nel.org" <jpoimboe@...nel.org>,
 "linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
 "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
 "linux-mm@...ck.org" <linux-mm@...ck.org>,
 "baolin.wang@...ux.alibaba.com" <baolin.wang@...ux.alibaba.com>,
 "tianruidong@...ux.alibaba.com" <tianruidong@...ux.alibaba.com>
Subject: Re: [PATCH v2 0/5] mm/hwpoison: Fix regressions in memory failure
 handling



在 2025/2/19 01:59, Luck, Tony 写道:
>>> What do futexes have to do with copying user memory?
>>
>> Return -EFAULT to userspace.
> 
> Missed this bit. Kernel code for futex does a get_user() to read the
> value of the futex from user memory.
> 
> -Tony
> 
> 

Tony, you saved me.

Thanks.
Shuai