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Date: Sat, 25 Oct 2014 14:42:49 +0800 From: Wang Nan <wangnan0@...wei.com> To: <masami.hiramatsu.pt@...achi.com>, <tixy@...aro.org> CC: <linux@....linux.org.uk>, <will.deacon@....com>, <dave.long@...aro.org>, <taras.kondratiuk@...aro.org>, <ben.dooks@...ethink.co.uk>, <cl@...ux.com>, <rabin@....in>, <davem@...emloft.net>, <linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>, <lizefan@...wei.com> Subject: [PATCH 0/4] ARM: kprobes: introduces instruction checker. This patch series is part of the version 7 of patch 'ARM: kprobes: enable OPTPROBES for ARM 32.'. Its main goal is introducing checker mechanism to give a chance to detail check each probed instructions. Based on Masami Hiramatsu's suggestion, I make it a dedicated series. Previous discussions can be found in following threads: https://lkml.org/lkml/2014/10/22/254 https://lkml.org/lkml/2014/8/27/255 https://lkml.org/lkml/2014/8/12/12 https://lkml.org/lkml/2014/8/8/992 https://lkml.org/lkml/2014/8/8/5 https://lkml.org/lkml/2014/8/5/63 Different from v6, this version redesign checker to make it use seprate tables other than K/Uprobe action tables, because checkers are not K/Uprobt specific. Patch 4/4 in this series also fix a minor bug in kprobe: original ARM kprobe allows probing on instructions like 'str r0, [sp, r1]', which is unsafe because we are unable to determine the stack space required to be protected. However, this bug exists since 2007, and gcc for ARM actually doesn't generate code like it. Wang Nan (4): ARM: kprobes: seprates load and store actions ARM: kprobes: introduces checker ARM: kprobes: collects stack consumption for store instructions ARM: kprobes: disallow probing stack consuming instructions arch/arm/include/asm/probes.h | 1 + arch/arm/kernel/kprobes-arm.c | 6 +- arch/arm/kernel/kprobes-test-arm.c | 17 ++-- arch/arm/kernel/kprobes-test-thumb.c | 13 +++ arch/arm/kernel/kprobes-thumb.c | 18 ++-- arch/arm/kernel/kprobes.c | 23 ++++- arch/arm/kernel/kprobes.h | 3 +- arch/arm/kernel/probes-arm.c | 41 +++++++-- arch/arm/kernel/probes-arm.h | 10 ++- arch/arm/kernel/probes-thumb.c | 168 ++++++++++++++++++++++++++++++----- arch/arm/kernel/probes-thumb.h | 26 ++++-- arch/arm/kernel/probes.c | 115 +++++++++++++++++++++++- arch/arm/kernel/probes.h | 24 ++++- arch/arm/kernel/uprobes-arm.c | 6 +- arch/arm/kernel/uprobes.c | 2 +- 15 files changed, 412 insertions(+), 61 deletions(-) -- 1.8.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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