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linux/arch/arm/include/asm
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Zev Weiss 166ce846dc ARM: prctl: reject PR_SET_MDWE on pre-ARMv6 
On v5 and lower CPUs we can't provide MDWE protection, so ensure we fail
any attempt to enable it via prctl(PR_SET_MDWE).

Previously such an attempt would misleadingly succeed, leading to any
subsequent mmap(PROT_READ|PROT_WRITE) or execve() failing unconditionally
(the latter somewhat violently via force_fatal_sig(SIGSEGV) due to
READ_IMPLIES_EXEC).

Link: https://lkml.kernel.org/r/20240227013546.15769-6-zev@bewilderbeest.net
Signed-off-by: Zev Weiss <zev@bewilderbeest.net>
Cc: <stable@vger.kernel.org>	[6.3+]
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Hildenbrand <david@redhat.com>
Cc: Florent Revest <revest@chromium.org>
Cc: Helge Deller <deller@gmx.de>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Ondrej Mosnacek <omosnace@redhat.com>
Cc: Rick Edgecombe <rick.p.edgecombe@intel.com>
Cc: Russell King (Oracle) <linux@armlinux.org.uk>
Cc: Sam James <sam@gentoo.org>
Cc: Stefan Roesch <shr@devkernel.io>
Cc: Yang Shi <yang@os.amperecomputing.com>
Cc: Yin Fengwei <fengwei.yin@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-03-26 11:07:22 -07:00
..
hardware
locomo: make locomo_bus_type constant and static
2024-01-04 14:38:57 +01:00
mach
ARM: 9298/1: Drop custom mdesc->handle_irq()
2023-06-19 09:35:48 +01:00
vdso
…
xen
…
arch_gicv3.h
…
arch_timer.h
…
archrandom.h
…
arm_pmuv3.h
arm64/arm: arm_pmuv3: perf: Don't truncate 64-bit registers
2023-11-07 11:00:57 +00:00
arm-cci.h
…
asm-offsets.h
…
assembler.h
locking/atomic: arm: fix sync ops
2023-06-05 09:57:13 +02:00
atomic.h
locking/atomic: arm: add preprocessor symbols
2023-06-05 09:57:15 +02:00
auxvec.h
…
barrier.h
…
bitops.h
…
bitrev.h
…
bL_switcher.h
…
bug.h
…
bugs.h
ARM: cpu: Switch to arch_cpu_finalize_init()
2023-06-16 10:15:59 +02:00
cache.h
…
cacheflush.h
mm: Introduce flush_cache_vmap_early()
2023-12-14 00:23:17 -08:00
cachetype.h
Introduce cpu_dcache_is_aliasing() across all architectures
2024-02-22 15:27:19 -08:00
checksum.h
…
clocksource.h
…
cmpxchg.h
locking/arch: Rename all internal __xchg() names to __arch_xchg()
2023-04-29 09:08:44 +02:00
compiler.h
…
cp15.h
…
cpu.h
…
cpufeature.h
…
cpuidle.h
…
cputype.h
…
cti.h
…
current.h
ARM: remove Thumb2 __builtin_thread_pointer workaround for Clang
2024-02-22 15:38:54 -08:00
dcc.h
…
delay.h
ARM: mm: Make virt_to_pfn() a static inline
2023-05-29 11:27:08 +02:00
device.h
…
div64.h
…
dma-iommu.h
ARM/dma-mapping: const a pointer to bus_type in arm_iommu_create_mapping()
2023-03-23 13:21:51 +01:00
dma.h
ARM: 9323/1: mm: Fix ARCH_LOW_ADDRESS_LIMIT when CONFIG_ZONE_DMA
2023-10-05 16:15:42 +01:00
dmi.h
…
domain.h
ARM: 9326/1: make <linux/uaccess.h> self-contained for ARM
2023-10-05 16:17:05 +01:00
ecard.h
…
edac.h
…
efi.h
efi: Discover BTI support in runtime services regions
2023-02-04 09:19:02 +01:00
elf.h
vdso/ARM: Make union vdso_data_store available for all architectures
2024-02-20 20:56:00 +01:00
exception.h
ARM: 9320/1: fix stack depot IRQ stack filter
2023-10-05 16:15:40 +01:00
fb.h
arch/arm: Implement <asm/fb.h> with generic helpers
2023-04-20 10:04:24 +02:00
fiq.h
…
firmware.h
…
fixmap.h
…
floppy.h
…
fncpy.h
…
fpstate.h
…
ftrace.h
ARM: 9304/1: add prototype for function called only from asm
2023-06-19 09:35:52 +01:00
futex.h
…
glue-cache.h
…
glue-df.h
…
glue-pf.h
…
glue-proc.h
…
glue.h
…
hardirq.h
…
highmem.h
…
hugetlb-3level.h
…
hugetlb.h
arm: include asm/cacheflush.h in asm/hugetlb.h
2023-08-21 13:38:00 -07:00
hw_breakpoint.h
…
hw_irq.h
…
hwcap.h
…
hypervisor.h
…
idmap.h
…
insn.h
…
io.h
asm/io: remove unnecessary xlate_dev_mem_ptr() and unxlate_dev_mem_ptr()
2023-11-23 10:37:40 +01:00
irq_work.h
arch: consolidate arch_irq_work_raise prototypes
2023-11-23 11:32:29 +01:00
irq.h
nmi_backtrace: allow excluding an arbitrary CPU
2023-08-18 10:19:00 -07:00
irqflags.h
…
jump_label.h
work around gcc bugs with 'asm goto' with outputs
2024-02-09 15:57:48 -08:00
kasan_def.h
…
kasan.h
…
Kbuild
…
kexec-internal.h
…
kexec.h
kernel/Kconfig.kexec: drop select of KEXEC for CRASH_DUMP
2023-12-06 16:12:48 -08:00
kfence.h
…
kgdb.h
…
kprobes.h
kprobes: unify kprobes_exceptions_nofify() prototypes
2023-11-10 19:59:05 +09:00
krait-l2-accessors.h
…
linkage.h
…
mc146818rtc.h
…
mcpm.h
…
mcs_spinlock.h
…
memblock.h
…
memory.h
ARM: mm: Make virt_to_pfn() a static inline
2023-05-29 11:27:08 +02:00
mman.h
ARM: prctl: reject PR_SET_MDWE on pre-ARMv6
2024-03-26 11:07:22 -07:00
mmu_context.h
…
mmu.h
…
module.h
…
module.lds.h
…
mpu.h
…
mtd-xip.h
…
neon.h
…
nwflash.h
…
opcodes-sec.h
…
opcodes-virt.h
…
opcodes.h
…
outercache.h
…
page-nommu.h
…
page.h
arch: define CONFIG_PAGE_SIZE_*KB on all architectures
2024-03-06 19:29:09 +01:00
paravirt_api_clock.h
…
paravirt.h
…
patch.h
…
pci.h
…
percpu.h
…
perf_event.h
…
pgalloc.h
…
pgtable-2level-hwdef.h
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pgtable-2level-types.h
…
pgtable-2level.h
mm/treewide: drop pXd_large()
2024-03-06 13:04:19 -08:00
pgtable-3level-hwdef.h
…
pgtable-3level-types.h
…
pgtable-3level.h
mm/treewide: drop pXd_large()
2024-03-06 13:04:19 -08:00
pgtable-hwdef.h
…
pgtable-nommu.h
…
pgtable.h
arm/pgtable: define PFN_PTE_SHIFT
2024-02-22 10:24:50 -08:00
probes.h
…
proc-fns.h
ARM: mm: Make virt_to_pfn() a static inline
2023-05-29 11:27:08 +02:00
processor.h
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procinfo.h
…
prom.h
…
psci.h
…
ptdump.h
arm: ptdump: rename CONFIG_DEBUG_WX to CONFIG_ARM_DEBUG_WX
2024-02-22 10:24:47 -08:00
ptrace.h
ARM: 9354/1: ptrace: Use bitfield helpers
2024-03-11 15:48:10 +00:00
seccomp.h
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sections.h
…
secure_cntvoff.h
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semihost.h
…
set_memory.h
…
setup.h
vgacon: clean up global screen_info instances
2023-10-17 10:17:02 +02:00
shmparam.h
…
signal.h
ARM: 9304/1: add prototype for function called only from asm
2023-06-19 09:35:52 +01:00
simd.h
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smp_plat.h
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smp_scu.h
…
smp_twd.h
…
smp.h
ARM: smp: Switch to hotplug core state synchronization
2023-05-15 13:44:57 +02:00
sparsemem.h
ARM: mm: Make virt_to_pfn() a static inline
2023-05-29 11:27:08 +02:00
spectre.h
ARM: 9304/1: add prototype for function called only from asm
2023-06-19 09:35:52 +01:00
spinlock_types.h
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spinlock.h
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stackprotector.h
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stacktrace.h
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string.h
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suspend.h
ARM: 9304/1: add prototype for function called only from asm
2023-06-19 09:35:52 +01:00
swab.h
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switch_to.h
…
sync_bitops.h
locking/atomic: arm: fix sync ops
2023-06-05 09:57:13 +02:00
syscall.h
ARM: ptrace: Restore syscall skipping for tracers
2023-08-16 13:58:49 -07:00
syscalls.h
ARM: 9309/1: add missing syscall prototypes
2023-06-19 09:35:55 +01:00
system_info.h
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system_misc.h
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tcm.h
ARM: 9314/1: tcm: move tcm_init() prototype to asm/tcm.h
2023-06-19 09:35:59 +01:00
therm.h
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thread_info.h
ARM: iwmmxt: Use undef hook to enable coprocessor for task
2023-05-17 15:08:22 +02:00
thread_notify.h
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timex.h
…
tlb.h
arm: convert various functions to use ptdescs
2023-08-21 13:37:55 -07:00
tlbflush.h
arm: implement the new page table range API
2023-08-24 16:20:20 -07:00
tls.h
…
topology.h
sched/topology: Add a new arch_scale_freq_ref() method
2023-12-23 15:52:34 +01:00
traps.h
ARM: 9326/1: make <linux/uaccess.h> self-contained for ARM
2023-10-05 16:17:05 +01:00
uaccess-asm.h
ARM: mm: Make virt_to_pfn() a static inline
2023-05-29 11:27:08 +02:00
uaccess.h
ARM: 9326/1: make <linux/uaccess.h> self-contained for ARM
2023-10-05 16:17:05 +01:00
ucontext.h
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unified.h
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unistd.h
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unwind.h
ARM: 9304/1: add prototype for function called only from asm
2023-06-19 09:35:52 +01:00
uprobes.h
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user.h
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v7m.h
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vdso.h
arch: vdso: consolidate gettime prototypes
2023-11-23 11:32:32 +01:00
vermagic.h
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vfp.h
Revert part of ae1f8d793a ("ARM: 9304/1: add prototype for function called only from asm")
2023-08-15 10:07:48 +01:00
vfpmacros.h
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vga.h
console: fix up ARM screen_info reference
2023-10-17 16:34:02 +02:00
virt.h
…
vmalloc.h
…
vmlinux.lds.h
…
word-at-a-time.h
kernel.h: removed REPEAT_BYTE from kernel.h
2024-02-01 09:47:59 -08:00
xor.h
…