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Date: Fri, 4 Nov 2016 20:31:57 +0000
From: "LeMay, Michael" <michael.lemay@...el.com>
To: "musl@...ts.openwall.com" <musl@...ts.openwall.com>
Subject: [RFC PATCH v3 0/2] SafeStack support
This first patchset adds architecture-independent support for SafeStack. A separate patch adds support for segmentation-based SafeStack hardening.
v2 -> v3:
- Further coalesced patches as they have become smaller and simpler.
- Reduced the use of ifdefs.
- Used musl-controlled macro in pthread_impl.h.
- Revised definition of preinit_us.
- Added __safestack_pthread_exit.
- Fixed invalid preprocessor expression in traverses_stack_p.
- Passed updated stack pointer to __clone during thread creation.
- Updated __stack_base in __safestack_init_thread.
- Simplified __sep_stack_seg_init and subroutines by requiring that LDT is empty prior to initialization.
Michael LeMay (2):
support SafeStack
add SafeStack build support
Makefile | 51 +++++++++++++++++-
configure | 10 ++++
ldso/dynlink.c | 13 +++++
src/env/__libc_start_main.c | 5 ++
src/internal/pthread_impl.h | 13 +++++
src/internal/safe_stack.c | 128 ++++++++++++++++++++++++++++++++++++++++++++
src/malloc/expand_heap.c | 2 +
src/thread/pthread_create.c | 14 ++++-
8 files changed, 234 insertions(+), 2 deletions(-)
create mode 100644 src/internal/safe_stack.c
--
2.7.4
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