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Message-ID: <20071025134124.wc44gdud7ixghfxv@m.safari.iki.fi>
Date: Thu, 25 Oct 2007 16:41:24 +0300
From: Sami Farin <safari-kernel@...ari.iki.fi>
To: Linux kernel Mailing List <linux-kernel@...r.kernel.org>
Cc: Jiri Kosina <jkosina@...e.cz>
Subject: x86: randomize brk() and RLIMIT_DATA
Would be neat if randomized brk and setrlimit(RLIMIT_DATA, ...)
worked in a predictable way:
$ gcc brk.c -fPIC -pie -m64;./a.out;./a.out;./a.out
sbrk=0x7f721b815000 main=0x7f721af04860
sbrk succeeded (brk=0x7f721b909240)
sbrk=0x7fc3d77e2000 main=0x7fc3d66fa860
sbrk failed: Cannot allocate memory (brk=0x7fc3d77e2000)
sbrk=0x7f05b0615000 main=0x7f05af76b860
sbrk failed: Cannot allocate memory (brk=0x7f05b0615000)
--
Do what you love because life is too short for anything else.
View attachment "brk.c" of type "text/plain" (693 bytes)
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