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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 | |
16 | default y | |
17 | help | |
18 | This option activates instrumentation for the entire kernel. | |
19 | If you don't enable this option, you have to explicitly specify | |
20 | UBSAN_SANITIZE := y for the files/directories you want to check for UB. | |
21 | ||
22 | config UBSAN_ALIGNMENT | |
23 | bool "Enable checking of pointers alignment" | |
24 | depends on UBSAN | |
25 | default y if !HAVE_EFFICIENT_UNALIGNED_ACCESS | |
26 | help | |
27 | This option enables detection of unaligned memory accesses. | |
28 | Enabling this option on architectures that support unalligned | |
29 | accesses may produce a lot of false positives. |