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Code Issues Releases Wiki Activity

powerpc: Move EXCEPTION_TABLE to RO_DATA segment

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Since the EXCEPTION_TABLE is read-only, collapse it into RO_DATA.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: linux-alpha@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-c6x-dev@linux-c6x.org
Cc: linux-ia64@vger.kernel.org
Cc: linux-s390@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Rick Edgecombe <rick.p.edgecombe@intel.com>
Cc: Segher Boessenkool <segher@kernel.crashing.org>
Cc: Will Deacon <will@kernel.org>
Cc: x86-ml <x86@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: https://lkml.kernel.org/r/20191029211351.13243-25-keescook@chromium.org
This commit is contained in:
Kees Cook 2019-10-29 14:13:46 -07:00 committed by Borislav Petkov
parent 6e85e23ef2
commit 4e9e559a03
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/kernel/vmlinux.lds.S
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@ -7,6 +7,7 @@
#define BSS_FIRST_SECTIONS *(.bss.prominit)
#define EMITS_PT_NOTE
#define RO_EXCEPTION_TABLE_ALIGN 0
#include <asm/page.h>
#include <asm-generic/vmlinux.lds.h>
@ -162,7 +163,6 @@ SECTIONS
__stop__btb_flush_fixup = .;
}
#endif
EXCEPTION_TABLE(0)
/*
* Init sections discarded at runtime