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Re: [PATCH 0/8] v2 - validate binary before use

From: Aleksandar Ristovski <aristovski at qnx dot com>
To: Jan Kratochvil <jan dot kratochvil at redhat dot com>
Cc: <gdb-patches at sourceware dot org>
Date: Tue, 9 Apr 2013 11:44:16 -0400
Subject: Re: [PATCH 0/8] v2 - validate binary before use
References: <1365521265-28870-1-git-send-email-ARistovski at qnx dot com> <20130409153643 dot GA25825 at host2 dot jankratochvil dot net>

On 13-04-09 11:36 AM, Jan Kratochvil wrote:

On Tue, 09 Apr 2013 17:27:37 +0200, Aleksandar Ristovski wrote:

Core support:
   - core will use second method. Note, however, that due to (at least
   on ubuntu) not dumping page containing buid-id in the core, the
   validation can not be performed (it will always default to valid).
   This is misfortunate but outside the scope of this patch.


FYI it is bit 4 in /proc/self/coredump_filter, Fedora has the default 0x33.

It is configured for Linux kernel by:
linux-2.6/fs/Kconfig.binfmt CORE_DUMP_DEFAULT_ELF_HEADERS

One can simulate it if not pre-configured:
	echo 0x33 >/proc/self/coredump_filter

Good to know. Thanks. In that case, it will be picked up by normaltarget_read_memory (second method).


---
Aleksandar

References:
- [PATCH 0/8] v2 - validate binary before use
  - From: Aleksandar Ristovski
- Re: [PATCH 0/8] v2 - validate binary before use
  - From: Jan Kratochvil

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