lkml.org 
[lkml]   [2014]   [Mar]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
Subject[PATCH 0/7] uprobes/x86: introduce uprobe_xol_ops and arch_uprobe->ops
Hello.

x86 can not handle the rip-relative jmp/call instrsuctions, the probed
task can be killed by general protection fault. I'll describe this in
more details when I send the fixes. Now I am sending the preparations
which (I hope) make sense anyway, please review.

My main concern is 3/7. I know absolutely nothing about instruction
decoding, so I can only guess what, for example, OPCODE1() == 0xff or
MODRM_REG() == 2 actually means. Please review.

Ananth, David, please ack/nack the first change, it affects powerpc/arm.

Oleg.

arch/x86/include/asm/uprobes.h | 7 +-
arch/x86/kernel/uprobes.c | 343 ++++++++++++++++++++--------------------
kernel/events/uprobes.c | 23 +---
3 files changed, 176 insertions(+), 197 deletions(-)



\
 
 \ /
  Last update: 2014-03-31 23:21    [W:0.216 / U:0.400 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site