diff options
| author | Arvind Sankar <nivedita@alum.mit.edu> | 2020-07-31 16:07:51 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-08-14 12:52:35 +0200 |
| commit | 527afc212231ea9d585b7709c0ab73263ecf0c85 (patch) | |
| tree | 6dd5a9b2c29276756522a69b3f15fde39eac4fb0 /arch/x86/boot/compressed/vmlinux.lds.S | |
| parent | 3f086189cd3641d212949ff044d8e4486c93d55e (diff) | |
| download | linux-next-527afc212231ea9d585b7709c0ab73263ecf0c85.tar.gz linux-next-527afc212231ea9d585b7709c0ab73263ecf0c85.zip | |
x86/boot: Check that there are no run-time relocations
Add a linker script check that there are no run-time relocations, and
remove the old one that tries to check via looking for specially-named
sections in the object files.
Drop the tests for -fPIE compiler option and -pie linker option, as they
are available in all supported gcc and binutils versions (as well as
clang and lld).
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Fangrui Song <maskray@google.com>
Reviewed-by: Sedat Dilek <sedat.dilek@gmail.com>
Link: https://lore.kernel.org/r/20200731230820.1742553-8-keescook@chromium.org
Diffstat (limited to 'arch/x86/boot/compressed/vmlinux.lds.S')
| -rw-r--r-- | arch/x86/boot/compressed/vmlinux.lds.S | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/boot/compressed/vmlinux.lds.S b/arch/x86/boot/compressed/vmlinux.lds.S index a4a4a59a2628..29df99b6cc64 100644 --- a/arch/x86/boot/compressed/vmlinux.lds.S +++ b/arch/x86/boot/compressed/vmlinux.lds.S @@ -42,6 +42,12 @@ SECTIONS *(.rodata.*) _erodata = . ; } + .rel.dyn : { + *(.rel.*) + } + .rela.dyn : { + *(.rela.*) + } .got : { *(.got) } @@ -85,3 +91,5 @@ ASSERT(SIZEOF(.got.plt) == 0 || SIZEOF(.got.plt) == 0x18, "Unexpected GOT/PLT en #else ASSERT(SIZEOF(.got.plt) == 0 || SIZEOF(.got.plt) == 0xc, "Unexpected GOT/PLT entries detected!") #endif + +ASSERT(SIZEOF(.rel.dyn) == 0 && SIZEOF(.rela.dyn) == 0, "Unexpected run-time relocations detected!") |