linux-kernel - [PATCH 0/8] perf tools: kaslr fixes

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 24 Jan 2014 17:10:10 +0200
From:	Adrian Hunter <adrian.hunter@...el.com>
To:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
	David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jiri Olsa <jolsa@...hat.com>, Mike Galbraith <efault@....de>,
	Namhyung Kim <namhyung@...il.com>,
	Paul Mackerras <paulus@...ba.org>,
	Stephane Eranian <eranian@...gle.com>
Subject: [PATCH 0/8] perf tools: kaslr fixes

Hi

Here are some patches that improve perf tools
handling of relocation.

This has become an issue as mentioned in this
thread:

	http://marc.info/?l=linux-kernel&m=139030004314756


It looks like the changes I made to vmlinux and
module mapping to allow object code to be read
broke the symbol annotation for relocated kernels.
The first patch fixes that.

There were some other issues though:
	- ref_reloc_sym was not always set up
	- mustn't use kcore if the kernel has moved
	- kallsyms is not unique for a given
	buildid

These things need more testing but I thought it was
worth getting comments now.


Adrian Hunter (8):
      perf tools: Fix symbol annotation for relocated kernel
      perf tools: Add kallsyms__get_function_start()
      perf tools: Add machine__get_kallsyms_filename()
      perf tools: Set up ref_reloc_sym in machine__create_kernel_maps()
      perf report: Get ref_reloc_sym from kernel map
      perf tools: Prevent the use of kcore if the kernel has moved
      perf tools: test does not need to set up ref_reloc_sym
      perf tools: Adjust kallsyms for relocated kernel

 tools/perf/builtin-record.c         | 10 ++----
 tools/perf/tests/vmlinux-kallsyms.c | 10 ------
 tools/perf/util/event.c             | 36 ++++++++++----------
 tools/perf/util/event.h             |  6 ++--
 tools/perf/util/machine.c           | 40 ++++++++++++++++++-----
 tools/perf/util/map.c               |  5 +--
 tools/perf/util/map.h               |  1 +
 tools/perf/util/symbol-elf.c        |  2 ++
 tools/perf/util/symbol.c            | 65 +++++++++++++++++++++++++++++++++----
 9 files changed, 120 insertions(+), 55 deletions(-)


Regards
Adrian
--
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/