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da57a369d3
linux_dsm_epyc7002/arch/arm64/kernel
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Mark Rutland da57a369d3 arm64: Enable TEXT_OFFSET fuzzing 
The arm64 Image header contains a text_offset field which bootloaders
are supposed to read to determine the offset (from a 2MB aligned "start
of memory" per booting.txt) at which to load the kernel. The offset is
not well respected by bootloaders at present, and due to the lack of
variation there is little incentive to support it. This is unfortunate
for the sake of future kernels where we may wish to vary the text offset
(even zeroing it).

This patch adds options to arm64 to enable fuzz-testing of text_offset.
CONFIG_ARM64_RANDOMIZE_TEXT_OFFSET forces the text offset to a random
16-byte aligned value value in the range [0..2MB) upon a build of the
kernel. It is recommended that distribution kernels enable randomization
to test bootloaders such that any compliance issues can be fixed early.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Tom Rini <trini@ti.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2014-07-10 12:36:58 +01:00
..
vdso arm64: vdso: fix coarse clock handling 2014-02-05 11:55:30 +00:00
.gitignore arm64: Build infrastructure 2012-09-17 13:42:21 +01:00
arm64ksyms.c arm64: Add ftrace support 2014-05-29 09:08:08 +01:00
asm-offsets.c arm64: kernel: cpu_{suspend/resume} implementation 2013-12-16 17:17:31 +00:00
cpu_ops.c arm64: Slightly improve the warning on CPU0 enable-method 2013-10-31 16:37:26 +00:00
cputable.c arm64: add CPU_HOTPLUG infrastructure 2013-10-25 11:33:21 +01:00
debug-monitors.c arm64: debug: remove noisy, pointless warning 2014-04-25 16:46:50 +01:00
efi-entry.S arm64: fix el2_setup check of CurrentEL 2014-07-04 16:16:52 +01:00
efi-stub.c arm64: efi: add EFI stub 2014-04-30 19:57:04 +01:00
efi.c arm64: efi: only attempt efi map setup if booting via EFI 2014-05-23 15:29:43 +01:00
entry-fpsimd.S arm64: add support for kernel mode NEON in interrupt context 2014-05-08 11:31:57 +02:00
entry-ftrace.S arm64: ftrace: Fix comment typo 'CONFIG_FUNCTION_GRAPH_FP_TEST' 2014-06-18 12:40:52 +01:00
entry.S arm64: Add __NR_* definitions for compat syscalls 2014-07-10 11:02:40 +01:00
fpsimd.c arm64: add support for kernel mode NEON in interrupt context 2014-05-08 11:31:57 +02:00
ftrace.c arm64: ftrace: Add dynamic ftrace support 2014-05-29 09:08:33 +01:00
head.S arm64: Enable TEXT_OFFSET fuzzing 2014-07-10 12:36:58 +01:00
hw_breakpoint.c arm64: is_compat_task is defined both in asm/compat.h and linux/compat.h 2014-05-12 16:43:29 +01:00
hyp-stub.S arm64: add hypervisor stub 2012-12-05 11:26:49 +00:00
image.h arm64: Update the Image header 2014-07-10 12:36:40 +01:00
insn.c arm64: introduce aarch64_insn_gen_{nop|branch_imm}() helper functions 2014-01-08 15:21:29 +00:00
io.c
irq.c arm64: use cpu_online_mask when using forced irq_set_affinity 2014-05-12 16:25:07 +01:00
jump_label.c arm64, jump label: optimize jump label implementation 2014-01-08 15:23:53 +00:00
kgdb.c arm64: KGDB: Add step debugging support 2014-02-26 11:16:25 +00:00
kuser32.S arm64: Add __NR_* definitions for compat syscalls 2014-07-10 11:02:40 +01:00
Makefile - Optimised assembly string/memory routines (based on the AArch64 Cortex 2014-06-06 10:43:28 -07:00
module.c arm64: move encode_insn_immediate() from module.c to insn.c 2014-01-08 15:21:29 +00:00
perf_event.c arm64: fix !CONFIG_COMPAT build failures 2014-04-06 23:25:04 +01:00
perf_regs.c arm64: fix !CONFIG_COMPAT build failures 2014-04-06 23:25:04 +01:00
process.c arm64: Add CONFIG_CC_STACKPROTECTOR 2014-07-09 12:23:48 +01:00
psci.c ARM: Check if a CPU has gone offline 2014-05-15 10:16:30 -04:00
ptrace.c arm64: audit: Add audit hook in syscall_trace_enter/exit() 2014-07-10 11:06:00 +01:00
return_address.c arm64: ftrace: Add CALLER_ADDRx macros 2014-05-29 09:08:33 +01:00
setup.c - Optimised assembly string/memory routines (based on the AArch64 Cortex 2014-06-06 10:43:28 -07:00
signal32.c arm64: Add __NR_* definitions for compat syscalls 2014-07-10 11:02:40 +01:00
signal.c 2014-05-15 for-3.16 pull request 2014-05-16 10:05:11 +01:00
sleep.S arm64: kernel: cpu_{suspend/resume} implementation 2013-12-16 17:17:31 +00:00
smp_spin_table.c arm64: Remove boot thread synchronisation for spin-table release method 2014-05-09 15:47:46 +01:00
smp.c - Optimised assembly string/memory routines (based on the AArch64 Cortex 2014-06-06 10:43:28 -07:00
stacktrace.c arm64: Add 'notrace' attribute to unwind_frame() for ftrace 2014-05-29 09:04:31 +01:00
suspend.c arm64: kernel: fix per-cpu offset restore on resume 2014-01-24 14:27:40 +00:00
sys32.S arm64: compat: correct register concatenation for syscall wrappers 2013-10-25 15:59:36 +01:00
sys_compat.c arm64: Add __NR_* definitions for compat syscalls 2014-07-10 11:02:40 +01:00
sys.c arm64: switch to generic sigaltstack 2013-02-14 09:17:29 -05:00
time.c arm64: kernel: initialize broadcast hrtimer based clock event device 2014-05-30 17:48:13 +01:00
topology.c arm64: topology: add MPIDR-based detection 2014-07-09 12:22:40 +01:00
traps.c arm64: Provide read/write fault information in compat signal handlers 2014-05-09 15:47:47 +01:00
vdso.c arm64: vdso: clean up vdso_pagelist initialization 2014-02-26 11:16:30 +00:00
vmlinux.lds.S arm64: Enable TEXT_OFFSET fuzzing 2014-07-10 12:36:58 +01:00