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vmlinux.lds.h: Move NOTES into RO_DATA

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The .notes section should be non-executable read-only data. As such,
move it to the RO_DATA macro instead of being per-architecture defined.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> # s390
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/20191029211351.13243-11-keescook@chromium.org
This commit is contained in:
Kees Cook 2019-10-29 14:13:32 -07:00 committed by Borislav Petkov
parent fbe6a8e618
commit eaf937075c
26 changed files with 5 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/alpha/kernel/vmlinux.lds.S
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@ -34,8 +34,6 @@ SECTIONS
swapper_pg_dir = SWAPPER_PGD;
_etext = .; /* End of text section */
NOTES
RODATA
EXCEPTION_TABLE(16)

2
arch/arc/kernel/vmlinux.lds.S
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@ -118,8 +118,6 @@ SECTIONS
/DISCARD/ : { *(.eh_frame) }
#endif
NOTES
. = ALIGN(PAGE_SIZE);
_end = . ;

2
arch/arm/kernel/vmlinux-xip.lds.S
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@ -70,8 +70,6 @@ SECTIONS
ARM_UNWIND_SECTIONS
#endif
NOTES
_etext = .; /* End of text and rodata section */
ARM_VECTORS

2
arch/arm/kernel/vmlinux.lds.S
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@ -81,8 +81,6 @@ SECTIONS
ARM_UNWIND_SECTIONS
#endif
NOTES
#ifdef CONFIG_STRICT_KERNEL_RWX
. = ALIGN(1<<SECTION_SHIFT);
#else

1
arch/arm64/kernel/vmlinux.lds.S
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@ -137,7 +137,6 @@ SECTIONS
RO_DATA(PAGE_SIZE) /* everything from this point to */
EXCEPTION_TABLE(8) /* __init_begin will be marked RO NX */
NOTES
. = ALIGN(PAGE_SIZE);
idmap_pg_dir = .;

1
arch/c6x/kernel/vmlinux.lds.S
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@ -81,7 +81,6 @@ SECTIONS
}
EXCEPTION_TABLE(16)
NOTES
RO_DATA_SECTION(PAGE_SIZE)
.const :

1
arch/csky/kernel/vmlinux.lds.S
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@ -53,7 +53,6 @@ SECTIONS
RW_DATA_SECTION(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
_edata = .;
NOTES
EXCEPTION_TABLE(L1_CACHE_BYTES)
BSS_SECTION(L1_CACHE_BYTES, PAGE_SIZE, L1_CACHE_BYTES)
VBR_BASE

1
arch/h8300/kernel/vmlinux.lds.S
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@ -38,7 +38,6 @@ SECTIONS
_etext = . ;
}
EXCEPTION_TABLE(16)
NOTES
RO_DATA_SECTION(4)
ROMEND = .;
#if defined(CONFIG_ROMKERNEL)

1
arch/hexagon/kernel/vmlinux.lds.S
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@ -54,7 +54,6 @@ SECTIONS
_edata = .;
EXCEPTION_TABLE(16)
NOTES
BSS_SECTION(_PAGE_SIZE, _PAGE_SIZE, _PAGE_SIZE)

2
arch/ia64/kernel/vmlinux.lds.S
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@ -70,8 +70,6 @@ SECTIONS {
/*
* Read-only data
*/
NOTES
EXCEPTION_TABLE(16)
/* MCA table */

1
arch/microblaze/kernel/vmlinux.lds.S
View File

@ -53,7 +53,6 @@ SECTIONS {
. = ALIGN(16);
RODATA
EXCEPTION_TABLE(16)
NOTES
/*
* sdata2 section can go anywhere, but must be word aligned

2
arch/mips/kernel/vmlinux.lds.S
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@ -81,8 +81,6 @@ SECTIONS
__stop___dbe_table = .;
}
NOTES
_sdata = .; /* Start of data section */
RODATA

1
arch/nds32/kernel/vmlinux.lds.S
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@ -58,7 +58,6 @@ SECTIONS
_edata = .;
EXCEPTION_TABLE(16)
NOTES
BSS_SECTION(4, 4, 4)
_end = .;

1
arch/nios2/kernel/vmlinux.lds.S
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@ -58,7 +58,6 @@ SECTIONS
STABS_DEBUG
DWARF_DEBUG
NOTES
DISCARDS
}

1
arch/openrisc/kernel/vmlinux.lds.S
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@ -79,7 +79,6 @@ SECTIONS
_edata = .;
EXCEPTION_TABLE(4)
NOTES
/* Init code and data */
. = ALIGN(PAGE_SIZE);

1
arch/parisc/kernel/vmlinux.lds.S
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@ -131,7 +131,6 @@ SECTIONS
/* RO because of BUILDTIME_EXTABLE_SORT */
EXCEPTION_TABLE(8)
NOTES
/* unwind info */
.PARISC.unwind : {

2
arch/powerpc/kernel/vmlinux.lds.S
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@ -164,8 +164,6 @@ SECTIONS
#endif
EXCEPTION_TABLE(0)
NOTES
/*
* Init sections discarded at runtime
*/

1
arch/riscv/kernel/vmlinux.lds.S
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@ -69,7 +69,6 @@ SECTIONS
BSS_SECTION(PAGE_SIZE, PAGE_SIZE, 0)
EXCEPTION_TABLE(0x10)
NOTES
.rel.dyn : {
*(.rel.dyn*)

2
arch/s390/kernel/vmlinux.lds.S
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@ -52,8 +52,6 @@ SECTIONS
_etext = .; /* End of text section */
} :text = 0x0700
NOTES
RO_DATA_SECTION(PAGE_SIZE)
. = ALIGN(PAGE_SIZE);

1
arch/sh/kernel/vmlinux.lds.S
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@ -48,7 +48,6 @@ SECTIONS
} = 0x0009
EXCEPTION_TABLE(16)
NOTES
_sdata = .;
RO_DATA(PAGE_SIZE)

1
arch/sparc/kernel/vmlinux.lds.S
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@ -78,7 +78,6 @@ SECTIONS
__stop___fixup = .;
}
EXCEPTION_TABLE(16)
NOTES
. = ALIGN(PAGE_SIZE);
__init_begin = ALIGN(PAGE_SIZE);

1
arch/um/include/asm/common.lds.S
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@ -16,7 +16,6 @@
PROVIDE (_unprotected_end = .);
. = ALIGN(4096);
NOTES
EXCEPTION_TABLE(0)
BUG_TABLE

1
arch/unicore32/kernel/vmlinux.lds.S
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@ -48,7 +48,6 @@ SECTIONS
_edata = .;
EXCEPTION_TABLE(L1_CACHE_BYTES)
NOTES
BSS_SECTION(0, 0, 0)
_end = .;

2
arch/x86/kernel/vmlinux.lds.S
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@ -148,8 +148,6 @@ SECTIONS
_etext = .;
} :text = 0x9090
NOTES
EXCEPTION_TABLE(16)
/* .text should occupy whole number of pages */

1
arch/xtensa/kernel/vmlinux.lds.S
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@ -131,7 +131,6 @@ SECTIONS
.fixup : { *(.fixup) }
EXCEPTION_TABLE(16)
NOTES
/* Data section */
_sdata = .;

9
include/asm-generic/vmlinux.lds.h
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@ -28,7 +28,6 @@
* _edata = .;
*
* EXCEPTION_TABLE(...)
* NOTES
*
* BSS_SECTION(0, 0, 0)
* _end = .;
@ -512,10 +511,12 @@
__start___modver = .; \
KEEP(*(__modver)) \
__stop___modver = .; \
. = ALIGN((align)); \
__end_rodata = .; \
} \
. = ALIGN((align));
\
NOTES \
\
. = ALIGN((align)); \
__end_rodata = .;
/* RODATA & RO_DATA provided for backward compatibility.
* All archs are supposed to use RO_DATA() */