This series adds undefined behavior and address sanitizer support to barebox. Both are fully functional on sandbox, where they are also used to implement dump_stack() now. I haven't yet read about how Kernel AddressSanitizer works, so this one only works on sandbox via libasan for now. The undefined behavior sanitizer depends on the compiler instrumenting potential pitfalls and then calling the routines in lib/ubsan.c if it catches something undefined, so that should readily work on other arches as well. I tested it on sandbox and the i.MX6Q so far. Eventually, it should be possible to enable it for all the non-PBL stuff with a single Kconfig option, but for now you need to explicitly add a UBSAN_SANITIZE_myfile.o := y in the respective Makefile. Enabling it wholesale doesn't yet work on ARM, I suspect it might be due to binary size. Changes in v2: v1 was incomplete and sent our more by mistake, so no changelog. Ahmad Fatoum (10): Kconfig: create Kconfig symbol for ARCH_HAS_STACK_DUMP Kconfig: create Kconfig symbol for ARCH_HAS_DATA_ABORT_MASK blackfin: delete unused <asm/barebox.h> definitions Kconfig: retire empty <asm/barebox.h> lib: add HAVE_EFFICIENT_UNALIGNED_ACCESS Kconfig option common: add generic CONFIG_UBSAN plumbing commands: add intentionally UB triggering ubsan command sandbox: use sanitizer unwind for dump_stack if available common: add generic CONFIG_KASAN option sandbox: support Address and UndefinedBehavior sanitizers Makefile | 4 + arch/arm/Kconfig | 2 + arch/arm/cpu/Kconfig | 1 + arch/arm/include/asm/barebox.h | 16 - arch/blackfin/include/asm/barebox.h | 43 --- arch/mips/Kconfig | 1 + arch/mips/include/asm/barebox.h | 8 - arch/nios2/include/asm/barebox.h | 4 - arch/openrisc/include/asm/barebox.h | 4 - arch/ppc/include/asm/barebox.h | 27 -- arch/ppc/include/asm/common.h | 2 - arch/riscv/include/asm/barebox.h | 1 - arch/sandbox/Kconfig | 8 + arch/sandbox/Makefile | 14 +- arch/sandbox/include/asm/barebox.h | 1 - arch/sandbox/lib/Makefile | 1 + arch/sandbox/lib/unwind.c | 11 + arch/x86/include/asm/barebox.h | 17 -- commands/Kconfig | 7 + commands/Makefile | 3 + commands/ubsan.c | 152 ++++++++++ common/Kconfig | 12 + include/abort.h | 4 +- include/common.h | 4 +- lib/Kconfig | 9 + lib/Kconfig.ubsan | 35 +++ lib/Makefile | 2 + lib/ubsan.c | 442 ++++++++++++++++++++++++++++ lib/ubsan.h | 89 ++++++ scripts/Makefile.lib | 8 + scripts/Makefile.ubsan | 19 ++ 31 files changed, 820 insertions(+), 131 deletions(-) delete mode 100644 arch/arm/include/asm/barebox.h delete mode 100644 arch/blackfin/include/asm/barebox.h delete mode 100644 arch/mips/include/asm/barebox.h delete mode 100644 arch/nios2/include/asm/barebox.h delete mode 100644 arch/openrisc/include/asm/barebox.h delete mode 100644 arch/ppc/include/asm/barebox.h delete mode 100644 arch/riscv/include/asm/barebox.h delete mode 100644 arch/sandbox/include/asm/barebox.h create mode 100644 arch/sandbox/lib/Makefile create mode 100644 arch/sandbox/lib/unwind.c delete mode 100644 arch/x86/include/asm/barebox.h create mode 100644 commands/ubsan.c create mode 100644 lib/Kconfig.ubsan create mode 100644 lib/ubsan.c create mode 100644 lib/ubsan.h create mode 100644 scripts/Makefile.ubsan -- 2.20.1 _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
