[PATCH 00/11] Fuzzing and ASAN for sandbox

[Andrew Scull]

This series sets up a basic fuzzing infrastructure that works with
sandbox. The example fuzz test towards the end of the series will find
something pretty quickly. That something is fixed by the series
"virtio: Harden and test vring" that needs to be applied for the final
patch in this series.

There is some refactoring to stop using '.' prefixed sections that elf
defines as being for system use and clang's ASAN instrumentation happily
adds redzones between, but that's not what we want for things like
linker lists where the linker script has carefully placed the sections
contiguously.

It may require patches from the "Fix misc ASAN reports" series to be
applied as I've already dealt with the first set of ASAN reports from
running the tests.

>From v1:
 - corrected handling of EFI symbols by sandbox linker script
 - per comments, some renaming and explaining
 - dropped RFC for dlmalloc ASAN instrumentation (work required to improve it)
 - added patch to reduce logging noise in fuzzer

Andrew Scull (12):
  sandbox: Fix EFI runtime symbol placement
  sandbox: Rename EFI runtime sections
  sandbox: Migrate getopt section to linker list
  linker_lists: Rename sections to remove . prefix
  sandbox: Add support for Address Sanitizer
  fuzzing_engine: Add fuzzing engine uclass
  test: fuzz: Add framework for fuzzing
  sandbox: Decouple program entry from sandbox init
  sandbox: Add libfuzzer integration
  sandbox: Implement fuzzing engine driver
  fuzz: virtio: Add fuzzer for vring
  virtio_ring: Reduce logging noise

 Kconfig                                       | 16 +++
 arch/Kconfig                                  |  2 +
 arch/arc/cpu/u-boot.lds                       |  4 +-
 arch/arm/config.mk                            |  4 +-
 arch/arm/cpu/arm926ejs/sunxi/u-boot-spl.lds   |  4 +-
 arch/arm/cpu/armv7/sunxi/u-boot-spl.lds       |  4 +-
 arch/arm/cpu/armv8/u-boot-spl.lds             |  4 +-
 arch/arm/cpu/armv8/u-boot.lds                 |  4 +-
 arch/arm/cpu/u-boot-spl.lds                   |  4 +-
 arch/arm/cpu/u-boot.lds                       |  6 +-
 arch/arm/mach-at91/arm926ejs/u-boot-spl.lds   |  2 +-
 arch/arm/mach-at91/armv7/u-boot-spl.lds       |  2 +-
 arch/arm/mach-omap2/u-boot-spl.lds            |  4 +-
 arch/arm/mach-orion5x/u-boot-spl.lds          |  4 +-
 arch/arm/mach-rockchip/u-boot-tpl-v8.lds      |  4 +-
 arch/arm/mach-zynq/u-boot-spl.lds             |  4 +-
 arch/arm/mach-zynq/u-boot.lds                 |  4 +-
 arch/m68k/cpu/u-boot.lds                      |  4 +-
 arch/microblaze/cpu/u-boot-spl.lds            |  4 +-
 arch/microblaze/cpu/u-boot.lds                |  4 +-
 arch/mips/config.mk                           |  2 +-
 arch/mips/cpu/u-boot-spl.lds                  |  4 +-
 arch/mips/cpu/u-boot.lds                      |  4 +-
 arch/nds32/cpu/n1213/u-boot.lds               |  4 +-
 arch/nios2/cpu/u-boot.lds                     |  4 +-
 arch/powerpc/cpu/mpc83xx/u-boot.lds           |  4 +-
 arch/powerpc/cpu/mpc85xx/u-boot-nand.lds      |  4 +-
 arch/powerpc/cpu/mpc85xx/u-boot-nand_spl.lds  |  4 +-
 arch/powerpc/cpu/mpc85xx/u-boot-spl.lds       |  4 +-
 arch/powerpc/cpu/mpc85xx/u-boot.lds           |  4 +-
 arch/riscv/cpu/u-boot-spl.lds                 |  4 +-
 arch/riscv/cpu/u-boot.lds                     |  4 +-
 arch/sandbox/config.mk                        | 15 ++-
 arch/sandbox/cpu/os.c                         | 97 ++++++++++++++++---
 arch/sandbox/cpu/start.c                      | 12 +--
 arch/sandbox/cpu/u-boot-spl.lds               | 10 +-
 arch/sandbox/cpu/u-boot.lds                   | 41 ++++----
 arch/sandbox/dts/test.dts                     |  4 +
 arch/sandbox/include/asm/fuzzing_engine.h     | 25 +++++
 arch/sandbox/include/asm/getopt.h             | 19 ++--
 arch/sandbox/include/asm/main.h               | 18 ++++
 arch/sandbox/include/asm/sections.h           | 25 -----
 arch/sandbox/lib/sections.c                   |  8 +-
 arch/sh/cpu/u-boot.lds                        |  4 +-
 arch/x86/cpu/u-boot-64.lds                    |  6 +-
 arch/x86/cpu/u-boot-spl.lds                   |  6 +-
 arch/x86/cpu/u-boot.lds                       |  6 +-
 arch/x86/lib/elf_ia32_efi.lds                 |  4 +-
 arch/x86/lib/elf_x86_64_efi.lds               |  4 +-
 arch/xtensa/cpu/u-boot.lds                    |  2 +-
 arch/xtensa/include/asm/ldscript.h            |  4 +-
 board/compulab/cm_t335/u-boot.lds             |  4 +-
 board/cssi/MCR3000/u-boot.lds                 |  4 +-
 .../davinci/da8xxevm/u-boot-spl-da850evm.lds  |  2 +-
 board/qualcomm/dragonboard820c/u-boot.lds     |  4 +-
 board/samsung/common/exynos-uboot-spl.lds     |  4 +-
 board/synopsys/iot_devkit/u-boot.lds          |  4 +-
 board/ti/am335x/u-boot.lds                    |  4 +-
 board/vscom/baltos/u-boot.lds                 |  4 +-
 configs/sandbox_defconfig                     |  1 +
 doc/api/linker_lists.rst                      | 22 ++---
 doc/develop/commands.rst                      |  4 +-
 doc/develop/driver-model/of-plat.rst          |  4 +-
 drivers/Kconfig                               |  2 +
 drivers/Makefile                              |  1 +
 drivers/fuzz/Kconfig                          | 17 ++++
 drivers/fuzz/Makefile                         |  8 ++
 drivers/fuzz/fuzzing_engine-uclass.c          | 28 ++++++
 drivers/fuzz/sandbox_fuzzing_engine.c         | 35 +++++++
 drivers/virtio/virtio_ring.c                  |  4 +-
 include/dm/uclass-id.h                        |  1 +
 include/fuzzing_engine.h                      | 51 ++++++++++
 include/linker_lists.h                        | 18 ++--
 include/test/fuzz.h                           | 51 ++++++++++
 test/Makefile                                 |  1 +
 test/fuzz/Makefile                            |  8 ++
 test/fuzz/cmd_fuzz.c                          | 82 ++++++++++++++++
 test/fuzz/virtio.c                            | 72 ++++++++++++++
 78 files changed, 680 insertions(+), 204 deletions(-)
 create mode 100644 arch/sandbox/include/asm/fuzzing_engine.h
 create mode 100644 arch/sandbox/include/asm/main.h
 create mode 100644 drivers/fuzz/Kconfig
 create mode 100644 drivers/fuzz/Makefile
 create mode 100644 drivers/fuzz/fuzzing_engine-uclass.c
 create mode 100644 drivers/fuzz/sandbox_fuzzing_engine.c
 create mode 100644 include/fuzzing_engine.h
 create mode 100644 include/test/fuzz.h
 create mode 100644 test/fuzz/Makefile
 create mode 100644 test/fuzz/cmd_fuzz.c
 create mode 100644 test/fuzz/virtio.c

-- 
2.35.1.1178.g4f1659d476-goog