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Date:   Mon, 2 Nov 2020 18:16:43 +0100
From:   =?utf-8?B?UGF3ZcWC?= Jasiak <pawel@jasiak.xyz>
To:     Jan Kara <jack@suse.cz>
Cc:     linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        x86@kernel.org, Thomas Gleixner <tglx@linutronix.de>,
        Brian Gerst <brgerst@gmail.com>,
        Andy Lutomirski <luto@kernel.org>
Subject: Re: PROBLEM: fanotify_mark EFAULT on x86
Message-ID: <20201102171643.GA5870@gmail.com>
References: <20201101212738.GA16924@gmail.com>
 <20201102122638.GB23988@quack2.suse.cz>
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On 02/11/20, Jan Kara wrote:
> Strange. Thanks for report. Looks like some issue got created / exposed
> somewhere between 5.5 and 5.9 (actually probably between 5.5 and 5.7
> because the Linaro report you mentioned [1] is from 5.7-rc6). There were
> no changes in this area in fanotify, I think it must have been some x86
> change that triggered this. Hum, looking into x86 changelog in that time
> range there was a series rewriting 32-bit ABI [2] that got merged into
> 5.7-rc1. Can you perhaps check whether 5.6 is good and 5.7-rc1 is bad?

5.6 works.
5.7-rc1 doesn't work.

-- 

Paweł Jasiak