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linux-st/arch/arm/kernel
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Alexandre Ghiti dba79c3df4 arm: use generic mmap top-down layout and brk randomization 
arm uses a top-down mmap layout by default that exactly fits the generic
functions, so get rid of arch specific code and use the generic version by
selecting ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT.

As ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT selects ARCH_HAS_ELF_RANDOMIZE,
use the generic version of arch_randomize_brk since it also fits.  Note
that this commit also removes the possibility for arm to have elf
randomization and no MMU: without MMU, the security added by randomization
is worth nothing.

Note that it is safe to remove STACK_RND_MASK since it matches the default
value.

Link: http://lkml.kernel.org/r/20190730055113.23635-9-alex@ghiti.fr
Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
Acked-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: James Hogan <jhogan@kernel.org>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-09-24 15:54:12 -07:00
..
.gitignore
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arch_timer.c
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armksyms.c
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asm-offsets.c
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atags_compat.c
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atags_parse.c
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atags_proc.c
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atags.h
ARM: mark setup_machine_tags() stub as __init __noreturn
2019-05-14 19:52:48 -07:00
bios32.c
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bugs.c
treewide: fix typos of SPDX-License-Identifier
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cpuidle.c
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crash_dump.c
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debug.S
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devtree.c
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dma-isa.c
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dma.c
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early_printk.c
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efi.c
mm/pgtable: drop pgtable_t variable from pte_fn_t functions
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elf.c
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entry-armv.S
docs: arm: convert docs to ReST and rename to *.rst
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entry-common.S
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entry-ftrace.S
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entry-header.S
ARM: 8844/1: use unified assembler in assembly files
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entry-v7m.S
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fiq.c
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fiqasm.S
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ftrace.c
ARM: function_graph: Simplify with function_graph_enter()
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head-common.S
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head-inflate-data.c
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head-nommu.S
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head.S
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hibernate.c
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hw_breakpoint.c
ARM/hw_breakpoint: Mark expected switch fall-throughs
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hyp-stub.S
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insn.c
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io.c
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irq.c
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isa.c
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iwmmxt.S
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jump_label.c
jump_label: move 'asm goto' support test to Kconfig
2019-01-06 09:46:51 +09:00
kgdb.c
kgdb/treewide: constify struct kgdb_arch arch_kgdb_ops
2018-12-30 08:33:06 +00:00
machine_kexec.c
ARM: avoid Cortex-A9 livelock on tight dmb loops
2019-02-01 22:05:50 +00:00
Makefile
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module-plts.c
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module.c
Merge tag 'modules-for-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux
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module.lds
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opcodes.c
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paravirt.c
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patch.c
ARM: 8839/1: kprobe: make patch_lock a raw_spinlock_t
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perf_callchain.c
Remove 'type' argument from access_ok() function
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perf_event_v6.c
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perf_event_v7.c
ARM: 8873/1: perf: cleanup cppcheck shifting warning
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perf_event_xscale.c
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perf_regs.c
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pj4-cp0.c
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process.c
arm: use generic mmap top-down layout and brk randomization
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psci_smp.c
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ptrace.c
Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
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reboot.c
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reboot.h
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relocate_kernel.S
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return_address.c
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setup.c
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signal.c
ARM: signal: Mark expected switch fall-through
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signal.h
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sigreturn_codes.S
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sleep.S
ARM: 8847/1: pm: fix HYP/SVC mode mismatch when MCPM is used
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smccc-call.S
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smp_scu.c
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smp_tlb.c
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smp_twd.c
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smp.c
ARM: 8872/1: Use common outgoing-CPU-notification code
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stacktrace.c
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suspend.c
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swp_emulate.c
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sys_arm.c
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sys_oabi-compat.c
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tcm.c
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thumbee.c
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time.c
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topology.c
arm: Use common cpu_topology structure and functions.
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traps.c
Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
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unwind.c
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v7m.c
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vdso.c
ARM: 8896/1: VDSO: Don't leak kernel addresses
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vmlinux-xip.lds.S
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vmlinux.lds.h
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vmlinux.lds.S
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xscale-cp0.c
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