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| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2016-09-12 14:37:19 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-09-20 14:26:08 +0200 |
| commit | 725c4d22bbc4fcac5779963e0ff9cdf232afbb90 (patch) | |
| tree | aa31d4784fc88800c8c26d18ecf90efa59480ee2 /lib/Kconfig.ubsan | |
| parent | s390/crashdump: use list_first_entry_or_null (diff) | |
| download | linux-725c4d22bbc4fcac5779963e0ff9cdf232afbb90.tar.xz linux-725c4d22bbc4fcac5779963e0ff9cdf232afbb90.zip | |
ubsan: allow to disable the null sanitizer
Some architectures use a hardware defined structure at address zero.
Checking for a null pointer will result in many ubsan reports.
Allow users to disable the null sanitizer.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'lib/Kconfig.ubsan')
| -rw-r--r-- | lib/Kconfig.ubsan | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/Kconfig.ubsan b/lib/Kconfig.ubsan index 39494af9a84a..bc6e651df68c 100644 --- a/lib/Kconfig.ubsan +++ b/lib/Kconfig.ubsan @@ -1,6 +1,9 @@ config ARCH_HAS_UBSAN_SANITIZE_ALL bool +config ARCH_WANTS_UBSAN_NO_NULL + def_bool n + config UBSAN bool "Undefined behaviour sanity checker" help @@ -34,3 +37,11 @@ config UBSAN_ALIGNMENT This option enables detection of unaligned memory accesses. Enabling this option on architectures that support unaligned accesses may produce a lot of false positives. + +config UBSAN_NULL + bool "Enable checking of null pointers" + depends on UBSAN + default y if !ARCH_WANTS_UBSAN_NO_NULL + help + This option enables detection of memory accesses via a + null pointer. |