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| Started by | Yang Shi <yang.shi@linaro.org> |
|---|---|
| First post | 2016-02-06 01:30 +0100 |
| Last post | 2016-02-08 08:50 +0100 |
| Articles | 2 — 2 participants |
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[PATCH] ubsan: cosmetic fix to Kconfig text Yang Shi <yang.shi@linaro.org> - 2016-02-06 01:30 +0100
Re: [PATCH] ubsan: cosmetic fix to Kconfig text Andrey Ryabinin <aryabinin@virtuozzo.com> - 2016-02-08 08:50 +0100
| From | Yang Shi <yang.shi@linaro.org> |
|---|---|
| Date | 2016-02-06 01:30 +0100 |
| Subject | [PATCH] ubsan: cosmetic fix to Kconfig text |
| Message-ID | <qYYVc-7EH-7@gated-at.bofh.it> |
When enabling UBSAN_SANITIZE_ALL, the kernel image size gets increased significantly (~3x). So, it sounds better to have some note in Kconfig. And, fixed a typo. Signed-off-by: Yang Shi <yang.shi@linaro.org> --- lib/Kconfig.ubsan | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/lib/Kconfig.ubsan b/lib/Kconfig.ubsan index 49518fb..e07c1ba 100644 --- a/lib/Kconfig.ubsan +++ b/lib/Kconfig.ubsan @@ -18,6 +18,8 @@ config UBSAN_SANITIZE_ALL This option activates instrumentation for the entire kernel. If you don't enable this option, you have to explicitly specify UBSAN_SANITIZE := y for the files/directories you want to check for UB. + Enabling this option will get kernel image size increased + significantly. config UBSAN_ALIGNMENT bool "Enable checking of pointers alignment" @@ -25,5 +27,5 @@ config UBSAN_ALIGNMENT default y if !HAVE_EFFICIENT_UNALIGNED_ACCESS help This option enables detection of unaligned memory accesses. - Enabling this option on architectures that support unalligned + Enabling this option on architectures that support unaligned accesses may produce a lot of false positives. -- 2.0.2
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| From | Andrey Ryabinin <aryabinin@virtuozzo.com> |
|---|---|
| Date | 2016-02-08 08:50 +0100 |
| Message-ID | <qZOK5-26D-1@gated-at.bofh.it> |
| In reply to | #1328175 |
On 02/06/2016 03:05 AM, Yang Shi wrote: > When enabling UBSAN_SANITIZE_ALL, the kernel image size gets increased > significantly (~3x). So, it sounds better to have some note in Kconfig. > > And, fixed a typo. > > Signed-off-by: Yang Shi <yang.shi@linaro.org> > --- Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com> > lib/Kconfig.ubsan | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/lib/Kconfig.ubsan b/lib/Kconfig.ubsan > index 49518fb..e07c1ba 100644 > --- a/lib/Kconfig.ubsan > +++ b/lib/Kconfig.ubsan > @@ -18,6 +18,8 @@ config UBSAN_SANITIZE_ALL > This option activates instrumentation for the entire kernel. > If you don't enable this option, you have to explicitly specify > UBSAN_SANITIZE := y for the files/directories you want to check for UB. > + Enabling this option will get kernel image size increased > + significantly. > > config UBSAN_ALIGNMENT > bool "Enable checking of pointers alignment" > @@ -25,5 +27,5 @@ config UBSAN_ALIGNMENT > default y if !HAVE_EFFICIENT_UNALIGNED_ACCESS > help > This option enables detection of unaligned memory accesses. > - Enabling this option on architectures that support unalligned > + Enabling this option on architectures that support unaligned > accesses may produce a lot of false positives. >
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