projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| c6d30853 AR |
1 | config ARCH_HAS_UBSAN_SANITIZE_ALL |
| 2 | bool | |
| 3 | ||
| 725c4d22 CB |
4 | config ARCH_WANTS_UBSAN_NO_NULL |
| 5 | def_bool n | |
| 6 | ||
| c6d30853 AR |
7 | config UBSAN |
| 8 | bool "Undefined behaviour sanity checker" | |
| 9 | help | |
| 10 | This option enables undefined behaviour sanity checker | |
| 11 | Compile-time instrumentation is used to detect various undefined | |
| 12 | behaviours in runtime. Various types of checks may be enabled | |
| 04625547 AP |
13 | via boot parameter ubsan_handle |
| 14 | (see: Documentation/dev-tools/ubsan.rst). | |
| c6d30853 AR |
15 | |
| 16 | config UBSAN_SANITIZE_ALL | |
| 17 | bool "Enable instrumentation for the entire kernel" | |
| 18 | depends on UBSAN | |
| 19 | depends on ARCH_HAS_UBSAN_SANITIZE_ALL | |
| dde5cf39 AR |
20 | |
| 21 | # We build with -Wno-maybe-uninitilzed, but we still want to | |
| 22 | # use -Wmaybe-uninitilized in allmodconfig builds. | |
| 23 | # So dependsy bellow used to disable this option in allmodconfig | |
| 24 | depends on !COMPILE_TEST | |
| c6d30853 AR |
25 | default y |
| 26 | help | |
| 27 | This option activates instrumentation for the entire kernel. | |
| 28 | If you don't enable this option, you have to explicitly specify | |
| 29 | UBSAN_SANITIZE := y for the files/directories you want to check for UB. | |
| 7707535a YS |
30 | Enabling this option will get kernel image size increased |
| 31 | significantly. | |
| c6d30853 AR |
32 | |
| 33 | config UBSAN_ALIGNMENT | |
| 34 | bool "Enable checking of pointers alignment" | |
| 35 | depends on UBSAN | |
| 36 | default y if !HAVE_EFFICIENT_UNALIGNED_ACCESS | |
| 37 | help | |
| 38 | This option enables detection of unaligned memory accesses. | |
| 7707535a | 39 | Enabling this option on architectures that support unaligned |
| c6d30853 | 40 | accesses may produce a lot of false positives. |
| 725c4d22 CB |
41 | |
| 42 | config UBSAN_NULL | |
| 43 | bool "Enable checking of null pointers" | |
| 44 | depends on UBSAN | |
| 45 | default y if !ARCH_WANTS_UBSAN_NO_NULL | |
| 46 | help | |
| 47 | This option enables detection of memory accesses via a | |
| 48 | null pointer. |