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Groups > linux.kernel > #1735291
| From | Kees Cook <keescook@chromium.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v3 0/3] arm64: Add CONFIG_KUSER_HELPERS |
| Date | 2017-09-20 00:10 +0200 |
| Message-ID | <urySl-2Ga-7@gated-at.bofh.it> (permalink) |
| References | <uoyOS-5b8-11@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Mon, Sep 11, 2017 at 8:26 AM, Mark Salyzyn <salyzyn@android.com> wrote: > Make it possible to disable the kuser helpers by adding a KUSER_HELPERS > config option (enabled by default). When disabled, all kuser > helpers-related code is removed from the kernel and no mapping is done > at the fixed high address (0xffff0000); any attempt to use a kuser > helper from a 32-bit process will result in a segfault. > > Signed-off-by: Mark Salyzyn <salyzyn@android.com> > > v2: > - vectors_page and compat_vdso_spec as array of 2 > - free sigpage if vectors allocation failed > - adjust makefile so one line for each of the assembler source modules > - split off assembler changes to a new previous patch in series to reduce churn > - modify slightly the feature documentation to reduce its reach > - modify slightly the feature documentation to rationalize the yes default. > - There are more ifdefs as a result of the rebase. > > v3: > - rebase (minor conflicts) This looks great to me. I'd love to see kuser helpers gone. :) Catalin, Will, does this need anything else? -Kees -- Kees Cook Pixel Security
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[PATCH v3 0/3] arm64: Add CONFIG_KUSER_HELPERS Mark Salyzyn <salyzyn@android.com> - 2017-09-11 17:30 +0200
Re: [PATCH v3 0/3] arm64: Add CONFIG_KUSER_HELPERS Kees Cook <keescook@chromium.org> - 2017-09-20 00:10 +0200
Re: [PATCH v3 0/3] arm64: Add CONFIG_KUSER_HELPERS Will Deacon <will.deacon@arm.com> - 2017-09-20 11:20 +0200
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