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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-05-14 22:31:23 (GMT) |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-05-14 22:31:23 (GMT) |
| commit | 4de5167ee07f7a9b66d999e40f2c3193d1a08add (patch) | |
| tree | 6458e3c033ace5f623046b92f90be9408db5deec /lib/Kconfig.kasan | |
| parent | b9a5e5e18fbf223502c0b2264c15024e393da928 (diff) | |
| parent | ff284f37fc0e6f3b51ede85c5944d571b640ac0f (diff) | |
| download | linux-4de5167ee07f7a9b66d999e40f2c3193d1a08add.tar.xz | |
Merge branches 'acpi-init' and 'acpica'
* acpi-init:
ACPI / init: Fix the ordering of acpi_reserve_resources()
* acpica:
Revert "ACPICA: Permanently set _REV to the value '2'."
Diffstat (limited to 'lib/Kconfig.kasan')
| -rw-r--r-- | lib/Kconfig.kasan | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan index 4fecaedc..777eda7 100644 --- a/lib/Kconfig.kasan +++ b/lib/Kconfig.kasan @@ -10,8 +10,11 @@ config KASAN help Enables kernel address sanitizer - runtime memory debugger, designed to find out-of-bounds accesses and use-after-free bugs. - This is strictly debugging feature. It consumes about 1/8 - of available memory and brings about ~x3 performance slowdown. + This is strictly a debugging feature and it requires a gcc version + of 4.9.2 or later. Detection of out of bounds accesses to stack or + global variables requires gcc 5.0 or later. + This feature consumes about 1/8 of available memory and brings about + ~x3 performance slowdown. For better error detection enable CONFIG_STACKTRACE, and add slub_debug=U to boot cmdline. @@ -40,6 +43,7 @@ config KASAN_INLINE memory accesses. This is faster than outline (in some workloads it gives about x2 boost over outline instrumentation), but make kernel's .text size much bigger. + This requires a gcc version of 5.0 or later. endchoice |