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