Re: [PATCH v2 20/27] compat_ioctl: simplify the implementation

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To: arnd@xxxxxxxx
Subject: Re: [PATCH v2 20/27] compat_ioctl: simplify the implementation
From: youling257 <youling257@xxxxxxxxx>
Date: Fri, 7 Feb 2020 15:22:10 +0800
Cc: axboe@xxxxxxxxx, jejb@xxxxxxxxxxxxx, martin.petersen@xxxxxxxxxx, linux-scsi@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-block@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, youling257 <youling257@xxxxxxxxx>
In-reply-to: <20191217221708.3730997-21-arnd@arndb.de>

This patch cause a problem on 64bit kernel 32bit userspace.
My 32bit Androidx86 userspace run on 64bit mainline kernel, this patch caused some app not detect root permission.

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  - From: Arnd Bergmann

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