linux-kernel - Re: [PATCH] mm: fix exit_mmap BUG() on a.out binary exit

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Message-Id: <1198142367.6484.28.camel@twins>
Date:	Thu, 20 Dec 2007 10:19:27 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Ivan Kokshaysky <ink@...assic.park.msu.ru>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH] mm: fix exit_mmap BUG() on a.out binary exit


On Thu, 2007-12-20 at 11:47 +0300, Ivan Kokshaysky wrote:
> The problem was introduced by commit "mm: variable length argument
> support" (b6a2fea39318e43fee84fa7b0b90d68bed92d2ba)
> as it didn't update fs/binfmt_aout.c like other binfmt's.
> 
> I noticed that on alpha when accidentally launched old OSF/1
> Acrobat Reader binary. Obviously, other architectures are affected
> as well.
> 
> Signed-off-by: Ivan Kokshaysky <ink@...assic.park.msu.ru>

Acked-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>

.24 material I'd say.

> ---
>  fs/binfmt_aout.c |    1 -
>  1 files changed, 0 insertions(+), 1 deletions(-)
> 
> diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c
> index e176d19..7596e1e 100644
> --- a/fs/binfmt_aout.c
> +++ b/fs/binfmt_aout.c
> @@ -319,7 +319,6 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
>  	current->mm->free_area_cache = current->mm->mmap_base;
>  	current->mm->cached_hole_size = 0;
>  
> -	current->mm->mmap = NULL;
>  	compute_creds(bprm);
>   	current->flags &= ~PF_FORKNOEXEC;
>  #ifdef __sparc__


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