From: Andreas Schwab <schwab@linux-m68k.org>
To: David Laight <David.Laight@ACULAB.COM>
Cc: 'Helge Deller' <deller@gmx.de>,
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
"linux-parisc@vger.kernel.org" <linux-parisc@vger.kernel.org>
Subject: Re: [PATCH] fat: Use pointer to d_name[0] in put_user() for compat case
Date: Mon, 14 Feb 2022 10:27:32 +0100 [thread overview]
Message-ID: <8735klx0fv.fsf@igel.home> (raw)
In-Reply-To: <49a26b7a30254d9fb9653c2f815eaa28@AcuMS.aculab.com> (David Laight's message of "Mon, 14 Feb 2022 09:12:01 +0000")
On Feb 14 2022, David Laight wrote:
> The 'bug' is caused by put_user() trying to do:
> __typeof__(ptr) __ptr = ptr;
> where __typeof__ is returning char[n] not char *.
>
> I've tried a few things but can't get __typeof__ to
> generate a suitable type for both a simple type and array.
Does it work to use __typeof__(&*(ptr))?
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1
"And now for something completely different."
next prev parent reply other threads:[~2022-02-14 9:27 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-13 22:10 [PATCH] fat: Use pointer to d_name[0] in put_user() for compat case Helge Deller
2022-02-14 7:59 ` OGAWA Hirofumi
2022-02-14 9:12 ` David Laight
2022-02-14 9:26 ` David Laight
2022-02-14 11:05 ` Helge Deller
2022-02-14 11:11 ` David Laight
2022-02-14 9:27 ` Andreas Schwab [this message]
2022-02-14 10:13 ` Helge Deller
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