Messages in this thread | | | Subject | Re: [PATCH] fs: partitions: efi: Fix bound check | From | Davidlohr Bueso <> | Date | Wed, 20 Nov 2013 09:46:55 -0800 |
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On Wed, 2013-11-20 at 08:18 +0100, Antti Miettinen wrote: > On 20.11.2013 02:04, Andrew Morton wrote: > > On Fri, 15 Nov 2013 19:14:22 +0200 (EET) Antti P Miettinen > > <amiettinen@nvidia.com> wrote: > > > > > Use ARRAY_SIZE instead of sizeof to get proper max for label > > > length. > > > > > > Signed-off-by: Antti P Miettinen <amiettinen@nvidia.com> > > > Reviewed-by: Hiroshi Doyu <hdoyu@nvidia.com> > > > Tested-by: Hiroshi Doyu <hdoyu@nvidia.com> > > > > When fixing a bug, please provide a description of the user-visible > > impact of that bug. This is so that others can decide which kernel > > version(s) need the patch. > > > > Hiroshi Doyu tested this patch, so I assume there was some observable > > misbehaviour to test. Please fully describe that. > > Since this is just a read out of bounds it's not that bad, but the > problem becomes user-visible e.g. if one tries to use > CONFIG_DEBUG_PAGEALLOC and CONFIG_DEBUG_RODATA, at least with some > enhancements from Hiroshi. Of course the destination array can contain > garbage when we read beyond the end of source array so that would be > another user-visible problem. >
Cc'ing Will - this path as been untouched since it's inclusion back in 2.6.37:
commit eec7ecfede74bb996060efefd5c157acd5794e8a Author: Will Drewry <wad@chromium.org> Date: Tue Aug 31 15:47:06 2010 -0500
genhd, efi: add efi partition metadata to hd_structs
This change extends the partition_meta_info structure to support EFI GPT-specific metadata and ensures that data is copied in on partition scanning.
Signed-off-by: Will Drewry <wad@chromium.org> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
> Should I send a new version with better commit message? > > --Antti
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