Peter Collingbourne dceec3ff78 arm64: expose FAR_EL1 tag bits in siginfo ... The kernel currently clears the tag bits (i.e. bits 56-63) in the fault address exposed via siginfo.si_addr and sigcontext.fault_address. However, the tag bits may be needed by tools in order to accurately diagnose memory errors, such as HWASan [1] or future tools based on the Memory Tagging Extension (MTE). Expose these bits via the arch_untagged_si_addr mechanism, so that they are only exposed to signal handlers with the SA_EXPOSE_TAGBITS flag set. [1] http://clang.llvm.org/docs/HardwareAssistedAddressSanitizerDesign.html Signed-off-by: Peter Collingbourne <pcc@google.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Link: https://linux-review.googlesource.com/id/Ia8876bad8c798e0a32df7c2ce1256c4771c81446 Link: https://lore.kernel.org/r/0010296597784267472fa13b39f8238d87a72cf8.1605904350.git.pcc@google.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>		2020-11-23 18:17:39 +00:00
..
vdso	vdso/treewide: Add vdso_data pointer argument to __arch_get_hw_counter()	2020-08-06 10:57:30 +02:00
xen	xen/arm: do not setup the runstate info page if kpti is enabled	2020-10-04 18:41:33 -05:00
acenv.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
acpi.h	arm64/acpi: disallow AML memory opregions to access kernel memory	2020-07-14 18:02:03 +01:00
alternative.h	arm64/alternatives: move length validation inside the subsection	2020-07-30 16:50:14 +01:00
arch_gicv3.h	irqchip/gic-v3: Support pseudo-NMIs when SCR_EL3.FIQ == 0	2020-09-13 17:52:04 +01:00
arch_timer.h	arm64: arch_timer: Allow an workaround descriptor to disable compat vdso	2020-07-08 21:57:51 +01:00
archrandom.h	arm64: random: Remove no longer needed prototypes	2020-10-07 14:17:20 +01:00
arm_dsu_pmu.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
arm-cci.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
asm_pointer_auth.h	arm64: simplify ptrauth initialization	2020-04-28 11:23:21 +01:00
asm-bug.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
asm-offsets.h
asm-prototypes.h
asm-uaccess.h	arm64 updates for 5.5:	2019-11-25 15:39:19 -08:00
assembler.h	kvm: arm64: Remove hyp_adr/ldr_this_cpu	2020-09-30 08:37:07 +01:00
atomic_ll_sc.h	arm64: Move the LSE gas support detection to Kconfig	2020-01-15 12:50:48 +00:00
atomic_lse.h	arm64: lse: fix LSE atomics with LLVM's integrated assembler	2020-01-16 17:25:10 +00:00
atomic.h	locking/atomic: Move ATOMIC_INIT into linux/types.h	2020-07-29 16:14:18 +02:00
barrier.h	iommu/arm-smmu-v3: Ensure queue is read after updating prod pointer	2020-09-28 22:57:43 +01:00
bitops.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
bitrev.h
boot.h	arm64: get rid of TEXT_OFFSET	2020-09-07 15:00:52 +01:00
brk-imm.h	arm64: kprobes: Use BRK instead of single-step when executing instructions out-of-line	2020-11-03 14:03:38 +00:00
bug.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
cache.h	arm64: avoid -Woverride-init warning	2020-10-28 13:38:36 +00:00
cacheflush.h	arm64: use asm-generic/cacheflush.h	2020-06-08 11:05:57 -07:00
checksum.h	arm64: csum: Fix handling of bad packets	2020-07-30 17:01:38 +01:00
clocksource.h	arm64: Introduce asm/vdso/clocksource.h	2020-03-21 15:23:55 +01:00
cmpxchg.h	arm64: fix unreachable code issue with cmpxchg	2019-09-17 12:11:50 +01:00
compat.h	compat: lift compat_s64 and compat_u64 to <asm-generic/compat.h>	2020-09-17 13:00:46 -04:00
compiler.h	arm64: use a common .arch preamble for inline assembly	2020-08-28 11:15:15 +01:00
cpu_ops.h	arm64: fix some spelling mistakes in the comments by codespell	2020-09-07 14:18:50 +01:00
cpu.h	Revert "arm64: initialize per-cpu offsets earlier"	2020-10-09 11:24:17 +01:00
cpucaps.h	arm64: Add workaround for Arm Cortex-A77 erratum 1508412	2020-10-29 12:56:01 +00:00
cpufeature.h	KVM/arm64 fixes for 5.10, take #1	2020-10-30 13:25:09 -04:00
cpuidle.h
cputype.h	arm64: Add part number for Arm Cortex-A77	2020-10-29 12:56:01 +00:00
current.h
daifflags.h	arm64: acpi: fix DAIF manipulation with pNMI	2020-01-22 14:41:22 +00:00
dcc.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 284	2019-06-05 17:36:37 +02:00
debug-monitors.h	arm64: kprobes: Use BRK instead of single-step when executing instructions out-of-line	2020-11-03 14:03:38 +00:00
device.h	arm64: Remove dev->archdata.iommu pointer	2020-06-30 11:59:49 +02:00
dmi.h
efi.h	efi/libstub: arm32: Base FDT and initrd placement on image address	2020-09-16 18:53:42 +03:00
elf.h	Split the old READ_IMPLIES_EXEC workaround from executable PT_GNU_STACK	2020-06-05 13:45:21 -07:00
esr.h	arm64: ptrauth: Introduce Armv8.3 pointer authentication enhancements	2020-09-14 12:07:02 +01:00
exception.h	arm64: expose FAR_EL1 tag bits in siginfo	2020-11-23 18:17:39 +00:00
exec.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
extable.h	arm64: Improve diagnostics when trapping BRK with FAULT_BRK_IMM	2020-09-18 16:35:54 +01:00
fb.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
fixmap.h	arm64/fixmap: make notes of fixed_addresses more precisely	2020-08-08 19:25:04 +01:00
fpsimd.h	arm64/sve: Implement a helper to load SVE registers from FPSIMD state	2020-09-21 18:06:33 +01:00
fpsimdmacros.h	arm64/sve: Implement a helper to flush SVE registers	2020-09-21 18:06:33 +01:00
ftrace.h	arm64: implement ftrace with regs	2019-11-06 14:17:35 +00:00
futex.h	futex: arch_futex_atomic_op_inuser() calling conventions change	2020-03-27 23:58:51 -04:00
hardirq.h	arm64: Remove custom IRQ stat accounting	2020-09-17 16:37:28 +01:00
hugetlb.h	arm64/hugetlb: Reserve CMA areas for gigantic pages on 16K and 64K configs	2020-07-15 13:38:03 +01:00
hw_breakpoint.h	arm64: remove pointless __KERNEL__ guards	2019-08-05 11:06:33 +01:00
hwcap.h	Merge branch 'for-next/mte' into for-next/core	2020-10-02 12:16:11 +01:00
hyp_image.h	kvm: arm64: Move nVHE hyp namespace macros to hyp_image.h	2020-09-30 08:33:52 +01:00
hypervisor.h
image.h	docs: arm64: convert docs to ReST and rename to .rst	2019-06-14 14:20:27 -06:00
insn.h	arm64: kprobe: add checks for ARMv8.3-PAuth combined instructions	2020-09-14 12:07:02 +01:00
io.h	iommu/arm-smmu-v3: Ensure queue is read after updating prod pointer	2020-09-28 22:57:43 +01:00
irq_work.h	arm64: Kill __smp_cross_call and co	2020-09-17 16:37:28 +01:00
irq.h
irqflags.h	arm64: Implement arch_irqs_disabled()	2020-08-26 12:41:55 +02:00
jump_label.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
kasan.h	arm64: mm: Introduce vabits_actual	2019-08-09 11:17:21 +01:00
Kbuild	KVM: arm64: Use common KVM implementation of MMU memory caches	2020-07-09 13:29:43 -04:00
kernel-pgtable.h	arm64: get rid of TEXT_OFFSET	2020-09-07 15:00:52 +01:00
kexec.h	Revert "arm64: kexec: make dtb_mem always enabled"	2020-01-10 16:00:50 +00:00
kgdb.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
kprobes.h	arm64: kprobes: Use BRK instead of single-step when executing instructions out-of-line	2020-11-03 14:03:38 +00:00
kvm_arm.h	Merge branch 'for-next/mte' into for-next/core	2020-10-02 12:16:11 +01:00
kvm_asm.h	Merge branch 'kvm-arm64/hyp-pcpu' into kvmarm-master/next	2020-09-30 14:05:35 +01:00
kvm_coproc.h	KVM/arm64 updates for Linux 5.9:	2020-08-09 12:58:23 -04:00
kvm_emulate.h	KVM/arm64 updates for Linux 5.10	2020-10-20 08:14:25 -04:00
kvm_host.h	KVM: arm64: Fix AArch32 handling of DBGD{CCINT,SCRext} and DBGVCR	2020-10-29 19:49:03 +00:00
kvm_hyp.h	KVM: arm64: nVHE: Handle hyp panics	2020-09-15 18:39:03 +01:00
kvm_mmu.h	Merge branch 'kvm-arm64/hyp-pcpu' into kvmarm-master/next	2020-09-30 14:05:35 +01:00
kvm_pgtable.h	KVM: arm64: Add support for relaxing stage-2 perms in generic page-table code	2020-09-11 15:51:15 +01:00
kvm_ptrauth.h	KVM: arm64: Update context references from host to hyp	2020-09-15 18:39:02 +01:00
kvm_ras.h
kvm_types.h	KVM: arm64: Use common KVM implementation of MMU memory caches	2020-07-09 13:29:43 -04:00
linkage.h	arm64: Don't insert a BTI instruction at inner labels	2020-06-24 14:24:29 +01:00
lse.h	arm64: lse: Fix LSE atomics with LLVM	2020-02-18 18:10:49 +00:00
memory.h	arm64: mm: use single quantity to represent the PA to VA translation	2020-10-15 11:14:57 +01:00
mman.h	arm64: mte: Validate the PROT_MTE request via arch_validate_flags()	2020-09-04 12:46:07 +01:00
mmu_context.h	arm64: mm: Pin down ASIDs for sharing mm with devices	2020-09-28 22:15:38 +01:00
mmu.h	Merge branch 'for-next/ghostbusters' into for-next/core	2020-10-02 12:15:24 +01:00
mmzone.h
module.h	arch: split MODULE_ARCH_VERMAGIC definitions out to <asm/vermagic.h>	2020-04-23 10:50:26 +09:00
module.lds.h	kbuild: preprocess module linker script	2020-09-25 00:36:41 +09:00
mte.h	arm64: mte: Enable swap of tagged pages	2020-09-04 12:46:07 +01:00
neon-intrinsics.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
neon.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
numa.h	arm64/mm: return cpu_all_mask when node is NUMA_NO_NODE	2020-09-21 22:05:01 +01:00
page-def.h	arm64/mm: Unify CONT_PTE_SHIFT	2020-09-11 16:33:43 +01:00
page.h	arm64: mte: Add PROT_MTE support to mmap() and mprotect()	2020-09-04 12:46:07 +01:00
paravirt.h	arm64: Retrieve stolen time as paravirtualized guest	2019-10-21 19:20:31 +01:00
pci.h	arm64: Enable PCI write-combine resources under sysfs	2020-09-18 14:05:13 +01:00
percpu.h	kvm: arm64: Remove __hyp_this_cpu_read	2020-09-30 08:33:52 +01:00
perf_event.h	arm64: perf: Add support caps under sysfs	2020-09-28 14:53:45 +01:00
pgalloc.h	asm-generic: pgalloc: provide generic pgd_free()	2020-08-07 11:33:26 -07:00
pgtable-hwdef.h	ARM:	2020-10-23 11:17:56 -07:00
pgtable-prot.h	ARM:	2020-10-23 11:17:56 -07:00
pgtable-types.h	arm64: add support for folded p4d page tables	2020-06-04 19:06:21 -07:00
pgtable.h	arm64: mm: use single quantity to represent the PA to VA translation	2020-10-15 11:14:57 +01:00
pointer_auth.h	arm64: sync kernel APIAKey when installing	2020-04-21 15:52:56 +01:00
preempt.h	sched/rt, arm64: Use CONFIG_PREEMPTION	2019-12-08 14:37:32 +01:00
probes.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174	2019-05-30 11:26:41 -07:00
proc-fns.h	arm64: mm: convert cpu_do_switch_mm() to C	2020-02-27 14:30:50 +00:00
processor.h	Merge branch 'for-next/mte' into for-next/core	2020-10-02 12:16:11 +01:00
ptdump.h	arm64: mm: convert mm/dump.c to use walk_page_range()	2020-02-04 03:05:25 +00:00
ptrace.h	irqchip/gic-v3: Support pseudo-NMIs when SCR_EL3.FIQ == 0	2020-09-13 17:52:04 +01:00
pvclock-abi.h	KVM: arm64: Implement PV_TIME_FEATURES call	2019-10-21 19:20:27 +01:00
scs.h	scs: Move scs_overflow_check() out of architecture code	2020-05-18 17:47:40 +01:00
sdei.h	arm64: Use the correct style for SPDX License Identifier	2019-04-16 16:28:01 +01:00
seccomp.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
sections.h	arm64: Remove __exception_text_start and __exception_text_end from asm/section.h	2020-01-08 17:30:19 +00:00
shmparam.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
signal32.h	arm64: remove pointless __KERNEL__ guards	2019-08-05 11:06:33 +01:00
signal.h	arm64: expose FAR_EL1 tag bits in siginfo	2020-11-23 18:17:39 +00:00
simd.h	arm64: fpsimd: Make sure SVE setup is complete before SIMD is used	2020-01-14 17:11:21 +00:00
smp_plat.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
smp.h	arm64: Remove custom IRQ stat accounting	2020-09-17 16:37:28 +01:00
sparsemem.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
spectre.h	arm64: Rewrite Spectre-v4 mitigation code	2020-09-29 16:08:16 +01:00
spinlock_types.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
spinlock.h	arm64/spinlock: fix a -Wunused-function warning	2020-02-10 11:29:24 +00:00
stack_pointer.h
stackprotector.h	arm64: initialize ptrauth keys for kernel booting task	2020-03-18 09:50:20 +00:00
stacktrace.h	arm64: stacktrace: Make stack walk callback consistent with generic code	2020-09-18 14:24:16 +01:00
stage2_pgtable.h	KVM: arm64: Remove unused page-table code	2020-09-11 15:51:15 +01:00
stat.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
string.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
suspend.h	arm64: Preserve register x18 when CPU is suspended	2020-05-15 16:35:50 +01:00
sync_bitops.h
syscall_wrapper.h	arm64: simplify syscall wrapper ifdeffery	2019-10-14 10:55:00 +01:00
syscall.h	arm64: compat: Ensure upper 32 bits of x0 are zero on syscall return	2020-07-16 11:41:31 +01:00
sysreg.h	arm64: Add workaround for Arm Cortex-A77 erratum 1508412	2020-10-29 12:56:01 +00:00
system_misc.h	arm64: expose FAR_EL1 tag bits in siginfo	2020-11-23 18:17:39 +00:00
thread_info.h	arm64: mte: Handle synchronous and asynchronous tag check faults	2020-09-04 12:46:06 +01:00
timex.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
tlb.h	arm64: tlb: Set the TTL field in flush_tlb_range	2020-07-07 11:23:47 +01:00
tlbflush.h	arm64: use a common .arch preamble for inline assembly	2020-08-28 11:15:15 +01:00
topology.h	cpufreq,arm,arm64: restructure definitions of arch_set_freq_scale()	2020-10-08 17:17:27 +02:00
traps.h	arm64: expose FAR_EL1 tag bits in siginfo	2020-11-23 18:17:39 +00:00
uaccess.h	uaccess: remove segment_eq	2020-08-12 10:57:58 -07:00
unistd32.h	mm/madvise: introduce process_madvise() syscall: an external memory hinting API	2020-10-18 09:27:10 -07:00
unistd.h	mm/madvise: introduce process_madvise() syscall: an external memory hinting API	2020-10-18 09:27:10 -07:00
uprobes.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
vdso.h	arm64/vdso: Add time namespace page	2020-07-24 13:15:20 +01:00
vermagic.h	arch: split MODULE_ARCH_VERMAGIC definitions out to <asm/vermagic.h>	2020-04-23 10:50:26 +09:00
virt.h	arm64: cpufeature: upgrade hyp caps to final	2020-10-30 08:53:10 +00:00
vmalloc.h	mm/vmalloc: Add empty <asm/vmalloc.h> headers and use them from <linux/vmalloc.h>	2019-12-10 10:12:55 +01:00
vmap_stack.h	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
word-at-a-time.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
xor.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00