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| author |   Laura Abbott <labbott@redhat.com> | 2016-10-27 09:27:34 -0700 |
|---|---|---|
| committer |   Catalin Marinas <catalin.marinas@arm.com> | 2016-11-07 18:15:04 +0000 |
| commit | 1404d6f13e47c42f155e3c6a611b1bf4dd35dde9 (patch) | |
| tree | f6bf9d56920d2c3d7346cd925781b071075c810b /arch/arm64/kernel | |
| parent | arm64: dump: Remove max_addr (diff) | |
| download | linux-dev-1404d6f13e47c42f155e3c6a611b1bf4dd35dde9.tar.xz linux-dev-1404d6f13e47c42f155e3c6a611b1bf4dd35dde9.zip | |
arm64: dump: Add checking for writable and exectuable pages
Page mappings with full RWX permissions are a security risk. x86
has an option to walk the page tables and dump any bad pages.
(See e1a58320a38d ("x86/mm: Warn on W^X mappings")). Add a similar
implementation for arm64.
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Laura Abbott <labbott@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
[catalin.marinas@arm.com: folded fix for KASan out of bounds from Mark Rutland]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/kernel')
0 files changed, 0 insertions, 0 deletions