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Message-ID: <2440e731-89e5-e674-9390-0de98533e744@intel.com>
Date: Tue, 27 Sep 2016 15:33:03 -0700
From: "LeMay, Michael" <michael.lemay@...el.com>
To: "musl@...ts.openwall.com" <musl@...ts.openwall.com>
Subject: [RFC PATCH 0/7] Segmentation-hardened SafeStack support
Here is the current revision of my patches for providing
segmentation-hardened SafeStack support.
See http://lists.llvm.org/pipermail/llvm-dev/2016-May/100346.html for
information on the corresponding compiler patches.
Comments appreciated.
Michael LeMay (7):
add --enable-safe-stack configuration option
avoid invoking the vDSO when SafeStack is enabled
disable check for buggy brk implementations when SafeStack is enabled
add stack segment override prefix to i386 __clone
support SafeStack in init and threading
support dynamic linking with segmentation-hardened SafeStack
add compiler flags to enable SafeStack
Makefile | 8 ++
arch/i386/syscall_arch.h | 13 +++
configure | 5 +
ldso/dlstart.c | 23 ++++-
ldso/dynlink.c | 44 ++++++--
src/env/__libc_start_main.c | 19 ++++
src/env/__safestack.c | 241
++++++++++++++++++++++++++++++++++++++++++++
src/internal/pthread_impl.h | 4 +
src/malloc/expand_heap.c | 2 +
src/thread/i386/clone.s | 2 +-
src/thread/pthread_create.c | 72 ++++++++++++-
11 files changed, 420 insertions(+), 13 deletions(-)
create mode 100644 src/env/__safestack.c
--
2.7.4
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