Date: Wed, 8 Nov 2017 23:30:14 +0100 From: Rasmus Villemoes <linux@...musvillemoes.dk> To: kernel-hardening@...ts.openwall.com Cc: linux-kernel@...r.kernel.org, Andrew Morton <akpm@...ux-foundation.org>, Kees Cook <keescook@...omium.org>, Rasmus Villemoes <linux@...musvillemoes.dk> Subject: [RFC 0/6] some compile- and run-time format checking Consider these strictly RFC/POC. I tried resurrecting my format_template plugin from two years ago, and it rebased pretty cleanly. It also compiles with gcc 6.3, and has the expected effect when one tries to trigger it, so it seems to work ok (I think there was some build bot issue back then, maybe there still is). The last four patches are something I threw together rather quickly. They compile and the few test cases pass, but I obviously need to find some places to actually use fmtcheck() to see if it's worth adding. Rasmus Villemoes (6): plugins: implement format_template attribute compiler.h: add __format_template compiler.h: add __attribute__((format_arg)) shorthand lib/vsprintf.c: add fmtcheck utility kernel.h: implement fmtmatch() wrapper around fmtcheck() lib/test_printf.c: add a few fmtcheck() test cases arch/Kconfig | 18 ++ drivers/hwmon/applesmc.c | 2 +- drivers/staging/speakup/spk_types.h | 2 +- include/linux/compiler-gcc.h | 1 + include/linux/compiler.h | 10 + include/linux/kernel.h | 13 ++ include/linux/smpboot.h | 2 +- include/linux/usb.h | 2 +- lib/test_printf.c | 41 ++++ lib/vsprintf.c | 63 +++++ scripts/Makefile.gcc-plugins | 2 + scripts/gcc-plugins/format_template_plugin.c | 331 +++++++++++++++++++++++++++ 12 files changed, 483 insertions(+), 4 deletions(-) create mode 100644 scripts/gcc-plugins/format_template_plugin.c -- 2.11.0
Powered by blists - more mailing lists
Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.