]> err.no Git - linux-2.6/commit
[PATCH] uml: use correct register file size everywhere
authorJeff Dike <jdike@addtoit.com>
Tue, 27 Mar 2007 05:32:25 +0000 (21:32 -0800)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Tue, 27 Mar 2007 16:05:15 +0000 (09:05 -0700)
commitb92c4f922b2e8c70f8790d42e45bb9401c57be63
treed7c1723382aa8eb983f216209c35a247d1bbc602
parent7632fc8f809a97f9d82ce125e8e3e579390ce2e5
[PATCH] uml: use correct register file size everywhere

This patch uses MAX_REG_NR consistently to refer to the register file size.
 FRAME_SIZE isn't sufficient because on x86_64, it is smaller than the
ptrace register file size.  MAX_REG_NR was introduced as a consistent way
to get the number of registers, but wasn't used everywhere it should be.

When this causes a problem, it makes PTRACE_SETREGS fail on x86_64 because
of a corrupted segment register value in the known-good register file.  The
patch also adds a register dump at that point in case there are any future
problems here.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/um/include/sysdep-x86_64/ptrace.h
arch/um/os-Linux/skas/mem.c
arch/um/os-Linux/skas/process.c
arch/um/os-Linux/sys-i386/registers.c
arch/um/os-Linux/sys-x86_64/registers.c