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

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Date:   Fri,  7 Feb 2020 15:22:10 +0800
From:   youling257 <youling257@...il.com>
To:     arnd@...db.de
Cc:     axboe@...nel.dk, jejb@...ux.ibm.com, martin.petersen@...cle.com,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-block@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        youling257 <youling257@...il.com>
Subject: Re: [PATCH v2 20/27] compat_ioctl: simplify the implementation

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.