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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-05-18 14:08:58 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-05-18 14:08:58 -0700 |
| commit | 02730d3c053a9af1d402e1c8dc8bbbc5a1340406 (patch) | |
| tree | db289a08de50eb4b5caf7840d5b7356ddfa1c51f /lib/Kconfig.kasan | |
| parent | 77232f791e0605521a978cbe7f79a93df24df374 (diff) | |
| parent | e26081808edadfd257c6c9d81014e3b25e9a6118 (diff) | |
| download | lwn-02730d3c053a9af1d402e1c8dc8bbbc5a1340406.tar.gz lwn-02730d3c053a9af1d402e1c8dc8bbbc5a1340406.zip | |
Merge 4.1-rc4 into tty-next
This resolves some tty driver merge issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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 4fecaedc80a2..777eda7d1ab4 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 |