The patch titled
Subject: fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix-fix-2
has been added to the -mm tree. Its filename is
fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix-fix-2.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix-fix-2.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix-fix-2.patch
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------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix-fix-2
Create and use ARCH_HAVE_ELF_ASLR.
There are probably lots of other places which should use this.
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Hector Marco Gisbert <hecmargi@xxxxxx>
Cc: Hector Marco-Gisbert <hecmargi@xxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Ismael Ripoll <iripoll@xxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Cc: Russell King <rmk@xxxxxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/arm/Kconfig | 1 +
arch/arm64/Kconfig | 1 +
arch/mips/Kconfig | 1 +
arch/powerpc/Kconfig | 1 +
arch/x86/Kconfig | 1 +
fs/Kconfig | 3 +++
fs/binfmt_elf.c | 11 ++---------
7 files changed, 10 insertions(+), 9 deletions(-)
diff -puN arch/arm/Kconfig~fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix-fix-2 arch/arm/Kconfig
--- a/arch/arm/Kconfig~fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix-fix-2
+++ a/arch/arm/Kconfig
@@ -5,6 +5,7 @@ config ARM
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_HAVE_CUSTOM_GPIO_H
select ARCH_HAS_GCOV_PROFILE_ALL
+ select ARCH_HAVE_ELF_ASLR
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_SUPPORTS_ATOMIC_RMW
select ARCH_USE_BUILTIN_BSWAP
diff -puN arch/arm64/Kconfig~fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix-fix-2 arch/arm64/Kconfig
--- a/arch/arm64/Kconfig~fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix-fix-2
+++ a/arch/arm64/Kconfig
@@ -9,6 +9,7 @@ config ARM64
select ARCH_WANT_OPTIONAL_GPIOLIB
select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
select ARCH_WANT_FRAME_POINTERS
+ select ARCH_HAVE_ELF_ASLR
select ARM_AMBA
select ARM_ARCH_TIMER
select ARM_GIC
diff -puN arch/mips/Kconfig~fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix-fix-2 arch/mips/Kconfig
--- a/arch/mips/Kconfig~fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix-fix-2
+++ a/arch/mips/Kconfig
@@ -39,6 +39,7 @@ config MIPS
select HAVE_MEMBLOCK
select HAVE_MEMBLOCK_NODE_MAP
select ARCH_DISCARD_MEMBLOCK
+ select ARCH_HAVE_ELF_ASLR
select GENERIC_SMP_IDLE_THREAD
select BUILDTIME_EXTABLE_SORT
select GENERIC_CLOCKEVENTS
diff -puN arch/powerpc/Kconfig~fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix-fix-2 arch/powerpc/Kconfig
--- a/arch/powerpc/Kconfig~fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix-fix-2
+++ a/arch/powerpc/Kconfig
@@ -97,6 +97,7 @@ config PPC
select HAVE_FUNCTION_GRAPH_TRACER
select SYSCTL_EXCEPTION_TRACE
select ARCH_WANT_OPTIONAL_GPIOLIB
+ select ARCH_HAVE_ELF_ASLR
select VIRT_TO_BUS if !PPC64
select HAVE_IDE
select HAVE_IOREMAP_PROT
diff -puN arch/x86/Kconfig~fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix-fix-2 arch/x86/Kconfig
--- a/arch/x86/Kconfig~fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix-fix-2
+++ a/arch/x86/Kconfig
@@ -28,6 +28,7 @@ config X86
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_MIGHT_HAVE_PC_SERIO
+ select ARCH_HAVE_ELF_ASLR
select HAVE_AOUT if X86_32
select HAVE_UNSTABLE_SCHED_CLOCK
select ARCH_SUPPORTS_NUMA_BALANCING if X86_64
diff -puN fs/Kconfig~fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix-fix-2 fs/Kconfig
--- a/fs/Kconfig~fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix-fix-2
+++ a/fs/Kconfig
@@ -50,6 +50,9 @@ config FS_DAX
endif # BLOCK
+config ARCH_HAVE_ELF_ASLR
+ bool
+
# Posix ACL utility routines
#
# Note: Posix ACLs can be implemented without these helpers. Never use
diff -puN fs/binfmt_elf.c~fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix-fix-2 fs/binfmt_elf.c
--- a/fs/binfmt_elf.c~fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix-fix-2
+++ a/fs/binfmt_elf.c
@@ -2301,15 +2301,7 @@ out:
#endif /* CONFIG_ELF_CORE */
-/* Not all architectures implement mmap_rnd() */
-unsigned long __weak mmap_rnd(void)
-{
-}
-
-/*
- * Not all architectures use randomize_et_dyn(), but there doesn't seem to be
- * a compile-time way of avoiding its generation.
- */
+#ifdef ARCH_HAVE_ELF_ASLR
unsigned long randomize_et_dyn(unsigned long base)
{
unsigned long ret;
@@ -2320,6 +2312,7 @@ unsigned long randomize_et_dyn(unsigned
ret = base + mmap_rnd();
return max(ret, base);
}
+#endif
static int __init init_elf_binfmt(void)
{
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
arch-alpha-kernel-systblss-remove-debug-check.patch
i-need-old-gcc.patch
kernel-sysc-fix-uname26-for-40-fix.patch
mm.patch
mm-cma-release-trigger-checkpatch-fixes.patch
mm-cma-allocation-trigger-fix.patch
mm-compaction-enhance-compaction-finish-condition-fix.patch
page_writeback-cleanup-mess-around-cancel_dirty_page-checkpatch-fixes.patch
mm-hide-per-cpu-lists-in-output-of-show_mem-fix.patch
mm-vmscan-fix-the-page-state-calculation-in-too_many_isolated.patch
x86-add-pmd_-for-thp-fix.patch
sparc-add-pmd_-for-thp-fix.patch
mips-rename-brk_rnd-to-mmap_rnd.patch
fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix.patch
fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix-fix.patch
fix-offset2lib-issue-for-x86-arm-powerpc-and-mips-fix-fix-2.patch
kernel-conditionally-support-non-root-users-groups-and-capabilities-checkpatch-fixes.patch
lib-find__bit-reimplementation-fix.patch
binfmt_misc-simplify-entry_status-fix.patch
fs-fat-remove-unnecessary-includes-fix.patch
kconfig-use-macros-which-are-already-defined-fix.patch
linux-next.patch
linux-next-rejects.patch
lib-kconfig-fix-up-have_arch_bitreverse-help-text.patch
do_shared_fault-check-that-mmap_sem-is-held.patch
journal_add_journal_head-debug.patch
journal_add_journal_head-debug-fix.patch
kernel-forkc-export-kernel_thread-to-modules.patch
mutex-subsystem-synchro-test-module.patch
slab-leaks3-default-y.patch
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