linux/drivers/pnp/pnpbios
Zachary Amsden 5fe9fe3c6f [PATCH] x86: Pnp byte granularity
The one remaining caller of set_limit, the PnP BIOS code, calls into the PnP
BIOS, passing kernel parameters in and out.  These parameteres may be passed
from arbitrary kernel virtual memory, so they deserve strict protection to
stop a bad BIOS from smashing beyond the object size.

Unfortunately, the use of set_limit was badly botching this by setting the
limit in terms of pages, when it really should have byte granularity.

When doing this, I discovered my BIOS had the buggy code during the "get
system device node" call:

 mov ax, es:[bx]

Which is harmless, but has a trivial workaround.

Signed-off-by: Zachary Amsden <zach@vmware.com>
Cc: "Seth, Rohit" <rohit.seth@intel.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-06 08:33:35 -08:00
..
bioscalls.c [PATCH] x86: Pnp byte granularity 2006-01-06 08:33:35 -08:00
core.c [PATCH] keep pnpbios usermod_helper away from hotplug_path[] 2006-01-04 16:18:07 -08:00
Kconfig Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Makefile Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pnpbios.h [PATCH] pnp: consolidate kmalloc wrappers 2005-09-07 16:57:21 -07:00
proc.c [PATCH] pnp: consolidate kmalloc wrappers 2005-09-07 16:57:21 -07:00
rsparser.c [PATCH] fix missing includes 2005-10-30 17:37:32 -08:00