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10e9ae9fab
kernel_optimize_test/scripts/gcc-plugins
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Alexander Popov 10e9ae9fab gcc-plugins: Add STACKLEAK plugin for tracking the kernel stack 
The STACKLEAK feature erases the kernel stack before returning from
syscalls. That reduces the information which kernel stack leak bugs can
reveal and blocks some uninitialized stack variable attacks.

This commit introduces the STACKLEAK gcc plugin. It is needed for
tracking the lowest border of the kernel stack, which is important
for the code erasing the used part of the kernel stack at the end
of syscalls (comes in a separate commit).

The STACKLEAK feature is ported from grsecurity/PaX. More information at:
  https://grsecurity.net/
  https://pax.grsecurity.net/

This code is modified from Brad Spengler/PaX Team's code in the last
public patch of grsecurity/PaX based on our understanding of the code.
Changes or omissions from the original code are ours and don't reflect
the original grsecurity/PaX code.

Signed-off-by: Alexander Popov <alex.popov@linux.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
2018-09-04 10:35:47 -07:00
..
.gitignore gcc-plugins: Add the randstruct plugin 2017-06-22 16:15:45 -07:00
cyc_complexity_plugin.c gcc-plugins: consolidate on PASS_INFO macro 2017-01-13 14:20:03 -08:00
gcc-common.h gcc-plugins: Clean up the cgraph_create_edge* macros 2018-07-24 16:14:06 -07:00
gcc-generate-gimple-pass.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
gcc-generate-ipa-pass.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
gcc-generate-rtl-pass.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
gcc-generate-simple_ipa-pass.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
gen-random-seed.sh License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig gcc-plugins: Add STACKLEAK plugin for tracking the kernel stack 2018-09-04 10:35:47 -07:00
latent_entropy_plugin.c gcc-plugins: Use dynamic initializers 2018-02-05 17:27:46 -08:00
Makefile gcc-plugins: remove unused GCC_PLUGIN_SUBDIR 2018-07-02 19:27:00 -07:00
randomize_layout_plugin.c security: convert security hooks to use hlist 2018-03-31 13:18:27 +11:00
sancov_plugin.c gcc-plugins: fix sancov_plugin for gcc-5 2017-02-27 14:10:10 -08:00
stackleak_plugin.c gcc-plugins: Add STACKLEAK plugin for tracking the kernel stack 2018-09-04 10:35:47 -07:00
structleak_plugin.c gcc-plugins: Use dynamic initializers 2018-02-05 17:27:46 -08:00