VisionFive2 Linux kernel

ec8f24b7faaf3 (Thomas Gleixner     2019-05-19 13:07:45 +0100   1) # SPDX-License-Identifier: GPL-2.0-only
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800   2) # This config refers to the generic KASAN mode.
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800   3) config HAVE_ARCH_KASAN
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800   4) 	bool
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800   5) 
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800   6) config HAVE_ARCH_KASAN_SW_TAGS
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800   7) 	bool
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800   8) 
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800   9) config HAVE_ARCH_KASAN_HW_TAGS
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  10) 	bool
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  11) 
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  12) config HAVE_ARCH_KASAN_VMALLOC
3c5c3cfb9ef4d (Daniel Axtens       2019-11-30 17:54:50 -0800  13) 	bool
3c5c3cfb9ef4d (Daniel Axtens       2019-11-30 17:54:50 -0800  14) 
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  15) config CC_HAS_KASAN_GENERIC
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  16) 	def_bool $(cc-option, -fsanitize=kernel-address)
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  17) 
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  18) config CC_HAS_KASAN_SW_TAGS
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  19) 	def_bool $(cc-option, -fsanitize=kernel-hwaddress)
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800  20) 
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  21) # This option is only required for software KASAN modes.
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  22) # Old GCC versions don't have proper support for no_sanitize_address.
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  23) # See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89124 for details.
7b861a53e46b6 (Marco Elver         2020-06-04 07:58:10 +0200  24) config CC_HAS_WORKING_NOSANITIZE_ADDRESS
acf7b0bf7dcf5 (Marco Elver         2020-06-23 13:24:48 +0200  25) 	def_bool !CC_IS_GCC || GCC_VERSION >= 80300
7b861a53e46b6 (Marco Elver         2020-06-04 07:58:10 +0200  26) 
7a3767f83f173 (Marco Elver         2020-08-06 23:24:28 -0700  27) menuconfig KASAN
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  28) 	bool "KASAN: runtime memory debugger"
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  29) 	depends on (((HAVE_ARCH_KASAN && CC_HAS_KASAN_GENERIC) || \
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  30) 		     (HAVE_ARCH_KASAN_SW_TAGS && CC_HAS_KASAN_SW_TAGS)) && \
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  31) 		    CC_HAS_WORKING_NOSANITIZE_ADDRESS) || \
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  32) 		   HAVE_ARCH_KASAN_HW_TAGS
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  33) 	depends on (SLUB && SYSFS) || (SLAB && !DEBUG_SLAB)
ffcc5cea46c0c (Andrey Konovalov    2020-12-22 12:00:42 -0800  34) 	select STACKDEPOT
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  35) 	help
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  36) 	  Enables KASAN (KernelAddressSANitizer) - runtime memory debugger,
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  37) 	  designed to find out-of-bounds accesses and use-after-free bugs.
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  38) 	  See Documentation/dev-tools/kasan.rst for details.
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  39) 
7a3767f83f173 (Marco Elver         2020-08-06 23:24:28 -0700  40) if KASAN
7a3767f83f173 (Marco Elver         2020-08-06 23:24:28 -0700  41) 
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  42) choice
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  43) 	prompt "KASAN mode"
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  44) 	default KASAN_GENERIC
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  45) 	help
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  46) 	  KASAN has three modes:
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  47) 	  1. generic KASAN (similar to userspace ASan,
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  48) 	     x86_64/arm64/xtensa, enabled with CONFIG_KASAN_GENERIC),
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  49) 	  2. software tag-based KASAN (arm64 only, based on software
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  50) 	     memory tagging (similar to userspace HWASan), enabled with
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  51) 	     CONFIG_KASAN_SW_TAGS), and
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  52) 	  3. hardware tag-based KASAN (arm64 only, based on hardware
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  53) 	     memory tagging, enabled with CONFIG_KASAN_HW_TAGS).
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  54) 
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  55) 	  All KASAN modes are strictly debugging features.
ac4766be5e2d1 (Marco Elver         2020-08-06 23:24:31 -0700  56) 
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  57) 	  For better error reports enable CONFIG_STACKTRACE.
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  58) 
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  59) config KASAN_GENERIC
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  60) 	bool "Generic mode"
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  61) 	depends on HAVE_ARCH_KASAN && CC_HAS_KASAN_GENERIC
dd275caf4a0d9 (Jason A. Donenfeld  2018-06-27 23:26:20 -0700  62) 	select SLUB_DEBUG if SLUB
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  63) 	select CONSTRUCTORS
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800  64) 	help
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  65) 	  Enables generic KASAN mode.
ac4766be5e2d1 (Marco Elver         2020-08-06 23:24:31 -0700  66) 
ac4766be5e2d1 (Marco Elver         2020-08-06 23:24:31 -0700  67) 	  This mode is supported in both GCC and Clang. With GCC it requires
527f6750d92be (Marco Elver         2020-10-13 16:47:51 -0700  68) 	  version 8.3.0 or later. Any supported Clang version is compatible,
527f6750d92be (Marco Elver         2020-10-13 16:47:51 -0700  69) 	  but detection of out-of-bounds accesses for global variables is
527f6750d92be (Marco Elver         2020-10-13 16:47:51 -0700  70) 	  supported only since Clang 11.
ac4766be5e2d1 (Marco Elver         2020-08-06 23:24:31 -0700  71) 
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  72) 	  This mode consumes about 1/8th of available memory at kernel start
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  73) 	  and introduces an overhead of ~x1.5 for the rest of the allocations.
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  74) 	  The performance slowdown is ~x3.
ac4766be5e2d1 (Marco Elver         2020-08-06 23:24:31 -0700  75) 
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  76) 	  Currently CONFIG_KASAN_GENERIC doesn't work with CONFIG_DEBUG_SLAB
7ed2f9e663854 (Alexander Potapenko 2016-03-25 14:21:59 -0700  77) 	  (the resulting kernel does not boot).
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800  78) 
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  79) config KASAN_SW_TAGS
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  80) 	bool "Software tag-based mode"
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  81) 	depends on HAVE_ARCH_KASAN_SW_TAGS && CC_HAS_KASAN_SW_TAGS
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  82) 	select SLUB_DEBUG if SLUB
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  83) 	select CONSTRUCTORS
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  84) 	help
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  85) 	  Enables software tag-based KASAN mode.
ac4766be5e2d1 (Marco Elver         2020-08-06 23:24:31 -0700  86) 
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  87) 	  This mode require software memory tagging support in the form of
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  88) 	  HWASan-like compiler instrumentation.
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  89) 
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  90) 	  Currently this mode is only implemented for arm64 CPUs and relies on
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800  91) 	  Top Byte Ignore. This mode requires Clang.
ac4766be5e2d1 (Marco Elver         2020-08-06 23:24:31 -0700  92) 
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  93) 	  This mode consumes about 1/16th of available memory at kernel start
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  94) 	  and introduces an overhead of ~20% for the rest of the allocations.
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  95) 	  This mode may potentially introduce problems relating to pointer
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  96) 	  casting and comparison, as it embeds tags into the top byte of each
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  97) 	  pointer.
ac4766be5e2d1 (Marco Elver         2020-08-06 23:24:31 -0700  98) 
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800  99) 	  Currently CONFIG_KASAN_SW_TAGS doesn't work with CONFIG_DEBUG_SLAB
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800 100) 	  (the resulting kernel does not boot).
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800 101) 
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800 102) config KASAN_HW_TAGS
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800 103) 	bool "Hardware tag-based mode"
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800 104) 	depends on HAVE_ARCH_KASAN_HW_TAGS
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800 105) 	depends on SLUB
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800 106) 	help
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800 107) 	  Enables hardware tag-based KASAN mode.
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800 108) 
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800 109) 	  This mode requires hardware memory tagging support, and can be used
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800 110) 	  by any architecture that provides it.
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800 111) 
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800 112) 	  Currently this mode is only implemented for arm64 CPUs starting from
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800 113) 	  ARMv8.5 and relies on Memory Tagging Extension and Top Byte Ignore.
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800 114) 
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800 115) endchoice
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800 116) 
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800 117) choice
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800 118) 	prompt "Instrumentation type"
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800 119) 	depends on KASAN_GENERIC || KASAN_SW_TAGS
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800 120) 	default KASAN_OUTLINE
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800 121) 
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800 122) config KASAN_OUTLINE
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800 123) 	bool "Outline instrumentation"
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800 124) 	help
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800 125) 	  Before every memory access compiler insert function call
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800 126) 	  __asan_load*/__asan_store*. These functions performs check
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800 127) 	  of shadow memory. This is slower than inline instrumentation,
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800 128) 	  however it doesn't bloat size of kernel's .text section so
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800 129) 	  much as inline does.
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800 130) 
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800 131) config KASAN_INLINE
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800 132) 	bool "Inline instrumentation"
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800 133) 	help
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800 134) 	  Compiler directly inserts code checking shadow memory before
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800 135) 	  memory accesses. This is faster than outline (in some workloads
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800 136) 	  it gives about x2 boost over outline instrumentation), but
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800 137) 	  make kernel's .text size much bigger.
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800 138) 
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800 139) endchoice
0b24becc810dc (Andrey Ryabinin     2015-02-13 14:39:17 -0800 140) 
02c587733c816 (Walter Wu           2021-04-16 15:46:00 -0700 141) config KASAN_STACK
6baec880d7a53 (Arnd Bergmann       2019-02-28 16:21:58 -0800 142) 	bool "Enable stack instrumentation (unsafe)" if CC_IS_CLANG && !COMPILE_TEST
6a63a63ff1ac2 (Andrey Konovalov    2020-12-22 12:01:20 -0800 143) 	depends on KASAN_GENERIC || KASAN_SW_TAGS
02c587733c816 (Walter Wu           2021-04-16 15:46:00 -0700 144) 	default y if CC_IS_GCC
6baec880d7a53 (Arnd Bergmann       2019-02-28 16:21:58 -0800 145) 	help
6baec880d7a53 (Arnd Bergmann       2019-02-28 16:21:58 -0800 146) 	  The LLVM stack address sanitizer has a know problem that
6baec880d7a53 (Arnd Bergmann       2019-02-28 16:21:58 -0800 147) 	  causes excessive stack usage in a lot of functions, see
6baec880d7a53 (Arnd Bergmann       2019-02-28 16:21:58 -0800 148) 	  https://bugs.llvm.org/show_bug.cgi?id=38809
6baec880d7a53 (Arnd Bergmann       2019-02-28 16:21:58 -0800 149) 	  Disabling asan-stack makes it safe to run kernels build
6baec880d7a53 (Arnd Bergmann       2019-02-28 16:21:58 -0800 150) 	  with clang-8 with KASAN enabled, though it loses some of
6baec880d7a53 (Arnd Bergmann       2019-02-28 16:21:58 -0800 151) 	  the functionality.
ebb6d35a74ce2 (Arnd Bergmann       2019-08-02 21:48:54 -0700 152) 	  This feature is always disabled when compile-testing with clang
ebb6d35a74ce2 (Arnd Bergmann       2019-08-02 21:48:54 -0700 153) 	  to avoid cluttering the output in stack overflow warnings,
ebb6d35a74ce2 (Arnd Bergmann       2019-08-02 21:48:54 -0700 154) 	  but clang users can still enable it for builds without
ebb6d35a74ce2 (Arnd Bergmann       2019-08-02 21:48:54 -0700 155) 	  CONFIG_COMPILE_TEST.	On gcc it is assumed to always be safe
ebb6d35a74ce2 (Arnd Bergmann       2019-08-02 21:48:54 -0700 156) 	  to use and enabled by default.
6baec880d7a53 (Arnd Bergmann       2019-02-28 16:21:58 -0800 157) 
ae8f06b31a83e (Walter Wu           2019-09-23 15:34:13 -0700 158) config KASAN_SW_TAGS_IDENTIFY
ae8f06b31a83e (Walter Wu           2019-09-23 15:34:13 -0700 159) 	bool "Enable memory corruption identification"
ae8f06b31a83e (Walter Wu           2019-09-23 15:34:13 -0700 160) 	depends on KASAN_SW_TAGS
ae8f06b31a83e (Walter Wu           2019-09-23 15:34:13 -0700 161) 	help
ae8f06b31a83e (Walter Wu           2019-09-23 15:34:13 -0700 162) 	  This option enables best-effort identification of bug type
ae8f06b31a83e (Walter Wu           2019-09-23 15:34:13 -0700 163) 	  (use-after-free or out-of-bounds) at the cost of increased
ae8f06b31a83e (Walter Wu           2019-09-23 15:34:13 -0700 164) 	  memory consumption.
ae8f06b31a83e (Walter Wu           2019-09-23 15:34:13 -0700 165) 
3c5c3cfb9ef4d (Daniel Axtens       2019-11-30 17:54:50 -0800 166) config KASAN_VMALLOC
3c5c3cfb9ef4d (Daniel Axtens       2019-11-30 17:54:50 -0800 167) 	bool "Back mappings in vmalloc space with real shadow memory"
71f6af6d52ceb (Andrey Konovalov    2020-12-22 12:00:10 -0800 168) 	depends on KASAN_GENERIC && HAVE_ARCH_KASAN_VMALLOC
3c5c3cfb9ef4d (Daniel Axtens       2019-11-30 17:54:50 -0800 169) 	help
3c5c3cfb9ef4d (Daniel Axtens       2019-11-30 17:54:50 -0800 170) 	  By default, the shadow region for vmalloc space is the read-only
3c5c3cfb9ef4d (Daniel Axtens       2019-11-30 17:54:50 -0800 171) 	  zero page. This means that KASAN cannot detect errors involving
3c5c3cfb9ef4d (Daniel Axtens       2019-11-30 17:54:50 -0800 172) 	  vmalloc space.
3c5c3cfb9ef4d (Daniel Axtens       2019-11-30 17:54:50 -0800 173) 
3c5c3cfb9ef4d (Daniel Axtens       2019-11-30 17:54:50 -0800 174) 	  Enabling this option will hook in to vmap/vmalloc and back those
3c5c3cfb9ef4d (Daniel Axtens       2019-11-30 17:54:50 -0800 175) 	  mappings with real shadow memory allocated on demand. This allows
3c5c3cfb9ef4d (Daniel Axtens       2019-11-30 17:54:50 -0800 176) 	  for KASAN to detect more sorts of errors (and to support vmapped
3c5c3cfb9ef4d (Daniel Axtens       2019-11-30 17:54:50 -0800 177) 	  stacks), but at the cost of higher memory usage.
3c5c3cfb9ef4d (Daniel Axtens       2019-11-30 17:54:50 -0800 178) 
73228c7ecc5e4 (Patricia Alfonso    2020-10-13 16:55:06 -0700 179) config KASAN_KUNIT_TEST
73228c7ecc5e4 (Patricia Alfonso    2020-10-13 16:55:06 -0700 180) 	tristate "KUnit-compatible tests of KASAN bug detection capabilities" if !KUNIT_ALL_TESTS
73228c7ecc5e4 (Patricia Alfonso    2020-10-13 16:55:06 -0700 181) 	depends on KASAN && KUNIT
73228c7ecc5e4 (Patricia Alfonso    2020-10-13 16:55:06 -0700 182) 	default KUNIT_ALL_TESTS
3f15801cdc237 (Andrey Ryabinin     2015-02-13 14:39:53 -0800 183) 	help
73228c7ecc5e4 (Patricia Alfonso    2020-10-13 16:55:06 -0700 184) 	  This is a KUnit test suite doing various nasty things like
73228c7ecc5e4 (Patricia Alfonso    2020-10-13 16:55:06 -0700 185) 	  out of bounds and use after free accesses. It is useful for testing
2bd926b439b4c (Andrey Konovalov    2018-12-28 00:29:53 -0800 186) 	  kernel debugging features like KASAN.
7a3767f83f173 (Marco Elver         2020-08-06 23:24:28 -0700 187) 
73228c7ecc5e4 (Patricia Alfonso    2020-10-13 16:55:06 -0700 188) 	  For more information on KUnit and unit tests in general, please refer
f05842cfb9ae2 (Andrey Konovalov    2021-02-24 12:05:26 -0800 189) 	  to the KUnit documentation in Documentation/dev-tools/kunit.
73228c7ecc5e4 (Patricia Alfonso    2020-10-13 16:55:06 -0700 190) 
5d92bdffd2d53 (Andrey Konovalov    2021-02-24 12:05:29 -0800 191) config KASAN_MODULE_TEST
73228c7ecc5e4 (Patricia Alfonso    2020-10-13 16:55:06 -0700 192) 	tristate "KUnit-incompatible tests of KASAN bug detection capabilities"
f05842cfb9ae2 (Andrey Konovalov    2021-02-24 12:05:26 -0800 193) 	depends on m && KASAN && !KASAN_HW_TAGS
73228c7ecc5e4 (Patricia Alfonso    2020-10-13 16:55:06 -0700 194) 	help
73228c7ecc5e4 (Patricia Alfonso    2020-10-13 16:55:06 -0700 195) 	  This is a part of the KASAN test suite that is incompatible with
73228c7ecc5e4 (Patricia Alfonso    2020-10-13 16:55:06 -0700 196) 	  KUnit. Currently includes tests that do bad copy_from/to_user
73228c7ecc5e4 (Patricia Alfonso    2020-10-13 16:55:06 -0700 197) 	  accesses.
73228c7ecc5e4 (Patricia Alfonso    2020-10-13 16:55:06 -0700 198) 
7a3767f83f173 (Marco Elver         2020-08-06 23:24:28 -0700 199) endif # KASAN