linux-kernel - Re: [PATCH] MIPS: Fix strnlen

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Message-ID: <20210416072257.GC5371@alpha.franken.de>
Date:   Fri, 16 Apr 2021 09:22:57 +0200
From:   Thomas Bogendoerfer <tsbogend@...ha.franken.de>
To:     linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] MIPS: Fix strnlen_user access check

On Thu, Apr 15, 2021 at 11:26:40PM +0200, Thomas Bogendoerfer wrote:
> Commit 04324f44cb69 ("MIPS: Remove get_fs/set_fs") changed the access_ok
> for strnlen_user to check the whole range, which broke some callers
> of strndup_user(). Restore the old behaviour and just check the first byte.
> 
> Fixes: 04324f44cb69 ("MIPS: Remove get_fs/set_fs")
> Signed-off-by: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
> ---
>  arch/mips/include/asm/uaccess.h | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

applied to mips-next.

Thomas.

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