Re: [PATCH 3.5] c/r: prctl: less paranoid prctl_set_mm_exe_file()

From: Cyrill Gorcunov
Date: Sat Jun 16 2012 - 05:01:49 EST


On Sat, Jun 16, 2012 at 12:51:04PM +0400, Konstantin Khlebnikov wrote:
> "no other files mapped" requirement from my previous patch
> (c/r: prctl: update prctl_set_mm_exe_file() after mm->num_exe_file_vmas removal)
> is too paranoid, it forbids operation even if there mapped one shared-anon vma.
>
> Let's check that current mm->exe_file already unmapped, in this case exe_file
> symlink already outdated and its changing is reasonable.
>
> Plus, this patch fixes exit code in case operation success.
>
> Signed-off-by: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxx>
> Reported-by: Cyrill Gorcunov <gorcunov@xxxxxxxxxx>

Thanks, Konstantin, letme test it out...

Cyrill
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/