From: Cyrill Gorcunov <gorcunov@gmail.com>
To: Dan Carpenter <dan.carpenter@oracle.com>
Cc: kbuild@01.org, Linux Memory Management List <linux-mm@kvack.org>
Subject: Re: [next:master 2131/2422] kernel/sys.c:1888 prctl_set_mm_map() warn: maybe return -EFAULT instead of the bytes remaining?
Date: Wed, 27 Aug 2014 14:09:09 +0400 [thread overview]
Message-ID: <20140827100909.GA8692@moon> (raw)
In-Reply-To: <20140827095613.GN5100@mwanda>
On Wed, Aug 27, 2014 at 12:56:13PM +0300, Dan Carpenter wrote:
>
> tree: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head: d05446ae2128064a4bb8f74c84f6901ffb5c94bc
> commit: 802d335c0f7f1a1867bf59814c55970a71b10413 [2131/2422] prctl: PR_SET_MM -- introduce PR_SET_MM_MAP operation
>
> kernel/sys.c:1888 prctl_set_mm_map() warn: maybe return -EFAULT instead of the bytes remaining?
>
> git remote add next git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
> git remote update next
> git checkout 802d335c0f7f1a1867bf59814c55970a71b10413
> vim +1888 kernel/sys.c
>
> 802d335c Cyrill Gorcunov 2014-08-26 1872
> 802d335c Cyrill Gorcunov 2014-08-26 1873 mm->start_code = prctl_map.start_code;
> 802d335c Cyrill Gorcunov 2014-08-26 1874 mm->end_code = prctl_map.end_code;
> 802d335c Cyrill Gorcunov 2014-08-26 1875 mm->start_data = prctl_map.start_data;
> 802d335c Cyrill Gorcunov 2014-08-26 1876 mm->end_data = prctl_map.end_data;
> 802d335c Cyrill Gorcunov 2014-08-26 1877 mm->start_brk = prctl_map.start_brk;
> 802d335c Cyrill Gorcunov 2014-08-26 1878 mm->brk = prctl_map.brk;
> 802d335c Cyrill Gorcunov 2014-08-26 1879 mm->start_stack = prctl_map.start_stack;
> 802d335c Cyrill Gorcunov 2014-08-26 1880 mm->arg_start = prctl_map.arg_start;
> 802d335c Cyrill Gorcunov 2014-08-26 1881 mm->arg_end = prctl_map.arg_end;
> 802d335c Cyrill Gorcunov 2014-08-26 1882 mm->env_start = prctl_map.env_start;
> 802d335c Cyrill Gorcunov 2014-08-26 1883 mm->env_end = prctl_map.env_end;
> 802d335c Cyrill Gorcunov 2014-08-26 1884
> 802d335c Cyrill Gorcunov 2014-08-26 1885 error = 0;
> 802d335c Cyrill Gorcunov 2014-08-26 1886 out:
> 802d335c Cyrill Gorcunov 2014-08-26 1887 up_read(&mm->mmap_sem);
> 802d335c Cyrill Gorcunov 2014-08-26 @1888 return error;
Not really sure I'm follow. @error is error code either 0 (on success) or
any other if some problem happened.
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next prev parent reply other threads:[~2014-08-27 10:09 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-27 9:56 [next:master 2131/2422] kernel/sys.c:1888 prctl_set_mm_map() warn: maybe return -EFAULT instead of the bytes remaining? Dan Carpenter
2014-08-27 10:09 ` Cyrill Gorcunov [this message]
2014-08-27 10:24 ` Dan Carpenter
2014-08-27 10:28 ` Cyrill Gorcunov
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