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linux/arch/arm64/kernel
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Catalin Marinas 1d0cb4c886 arm64: mte: Ensure the cleared tags are visible before setting the PTE 
As an optimisation, only pages mapped with PROT_MTE in user space have
the MTE tags zeroed. This is done lazily at the set_pte_at() time via
mte_sync_tags(). However, this function is missing a barrier and another
CPU may see the PTE updated before the zeroed tags are visible. Add an
smp_wmb() barrier if the mapping is Normal Tagged.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Fixes: 34bfeea4a9e9 ("arm64: mte: Clear the tags when a page is mapped in user-space with PROT_MTE")
Cc: <stable@vger.kernel.org> # 5.10.x
Reported-by: Vladimir Murzin <vladimir.murzin@arm.com>
Cc: Will Deacon <will@kernel.org>
Reviewed-by: Steven Price <steven.price@arm.com>
Tested-by: Vladimir Murzin <vladimir.murzin@arm.com>
Link: https://lore.kernel.org/r/20220517093532.127095-1-catalin.marinas@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
2022-05-17 14:29:51 +01:00
..
probes
arm64: kprobes: Make a frame pointer on __kretprobe_trampoline
2021-10-22 12:16:53 -04:00
vdso
arm64: vdso: fix makefile dependency on vdso.so
2022-05-10 12:08:40 +01:00
vdso32
arm64: vdso: fix makefile dependency on vdso.so
2022-05-10 12:08:40 +01:00
.gitignore
…
acpi_numa.c
arm64, numa: Change the numa init functions name to be generic
2021-01-14 15:08:54 -08:00
acpi_parking_protocol.c
arm64: use function_nocfi with __pa_symbol
2021-04-08 16:04:22 -07:00
acpi.c
arm64: Simplify checking for populated DT
2021-12-06 16:12:53 +00:00
alternative.c
arm64: alternatives: mark patch_alternative() as noinstr
2022-04-06 11:23:48 +01:00
armv8_deprecated.c
arm64: extable: add a dedicated uaccess handler
2021-10-21 10:45:22 +01:00
asm-offsets.c
KVM: arm64: Drop unused workaround_flags vcpu field
2021-12-08 14:54:07 +00:00
cacheinfo.c
drivers: base: cacheinfo: Get rid of DEFINE_SMP_CALL_CACHE_FUNCTION()
2021-09-01 10:29:10 +02:00
cpu_errata.c
arm64: Enable repeat tlbi workaround on KRYO4XX gold CPUs
2022-05-12 13:15:38 +01:00
cpu_ops.c
…
cpu-reset.S
arm64: kexec: remove cpu-reset.h
2021-10-01 13:31:00 +01:00
cpufeature.c
arm64: cpufeature: remove duplicate ID_AA64ISAR2_EL1 entry
2022-05-12 11:21:29 +01:00
cpuidle.c
cpuidle: PSCI: Move the has_lpi check to the beginning of the function
2022-03-03 20:20:06 +01:00
cpuinfo.c
arm64/mte: Add hwcap for asymmetric mode
2022-02-25 14:41:05 +00:00
crash_core.c
arm64: crash_core: Export MODULES, VMALLOC, and VMEMMAP ranges
2022-03-07 21:25:47 +00:00
crash_dump.c
arm64: kdump: update ppos when reading elfcorehdr
2021-03-22 12:46:38 +00:00
debug-monitors.c
arm64: expose FAR_EL1 tag bits in siginfo
2020-11-23 18:17:39 +00:00
efi-entry.S
arm64: Rename arm64-internal cache maintenance functions
2021-05-25 19:27:49 +01:00
efi-header.S
arm64: head: tidy up the Image header definition
2020-11-17 16:14:20 +00:00
efi-rt-wrapper.S
Merge branch 'for-next/scs' into for-next/core
2020-05-28 18:03:40 +01:00
efi.c
arm64: efi: Export screen_info
2021-08-04 16:54:36 +00:00
elfcore.c
elf: Fix the arm64 MTE ELF segment name and value
2022-04-28 11:37:06 +01:00
entry-common.c
Changes in this cycle were:
2022-03-22 14:39:12 -07:00
entry-fpsimd.S
arm64/sve: Explicitly load vector length when restoring SVE state
2021-10-21 10:18:17 +01:00
entry-ftrace.S
arm64: Use BTI C directly and unconditionally
2021-12-14 18:12:58 +00:00
entry.S
Merge branch 'for-next/spectre-bhb' into for-next/core
2022-03-14 19:08:31 +00:00
fpsimd.c
arm64/fpsimd: Clarify the purpose of using last in fpsimd_save()
2022-02-08 14:43:22 +00:00
ftrace.c
arm64: ftrace: use HAVE_FUNCTION_GRAPH_RET_ADDR_PTR
2021-11-16 09:47:54 +00:00
head.S
sched: move CPU field back into thread_info if THREAD_INFO_IN_TASK=y
2021-09-30 16:13:10 +02:00
hibernate-asm.S
arm64: kexec: install a copy of the linear-map
2021-10-01 13:31:00 +01:00
hibernate.c
arm64: Drop outdated links in comments
2022-01-05 11:51:01 +00:00
hw_breakpoint.c
arm64: fix typos in comments
2022-04-04 10:32:50 +01:00
hyp-stub.S
Merge remote-tracking branch 'arm64/for-next/vhe-only' into kvmarm-master/next
2021-04-13 15:42:40 +01:00
idle.c
Merge branch 'for-next/entry' into for-next/core
2021-06-24 14:01:55 +01:00
idreg-override.c
arm64: Add support of PAuth QARMA3 architected algorithm
2022-02-25 13:38:52 +00:00
image-vars.h
ARM:
2022-03-24 11:58:57 -07:00
image.h
arm64: get rid of TEXT_OFFSET
2020-09-07 15:00:52 +01:00
io.c
…
irq.c
arm64: irq: allow FIQs to be handled
2021-03-24 20:19:30 +00:00
jump_label.c
arm64: insn: decouple patching from insn code
2021-06-11 11:19:27 +01:00
kaslr.c
arm64: fix the doc of RANDOMIZE_MODULE_REGION_FULL
2021-08-03 10:36:42 +01:00
kexec_image.c
arm64: kexec_file: Fix sparse warning
2020-11-10 13:11:44 +00:00
kgdb.c
arm64: insn: decouple patching from insn code
2021-06-11 11:19:27 +01:00
kuser32.S
…
machine_kexec_file.c
arm64: kexec: Fix missing error code 'ret' warning in load_other_segments()
2021-12-16 17:44:58 +00:00
machine_kexec.c
Merge branches 'for-next/misc', 'for-next/cache-ops-dzp', 'for-next/stacktrace', 'for-next/xor-neon', 'for-next/kasan', 'for-next/armv8_7-fp', 'for-next/atomics', 'for-next/bti', 'for-next/sve', 'for-next/kselftest' and 'for-next/kcsan', remote-tracking branch 'arm64/for-next/perf' into for-next/core
2022-01-05 18:14:32 +00:00
Makefile
arm64: vdso: fix makefile dependency on vdso.so
2022-05-10 12:08:40 +01:00
module-plts.c
arm64: fix typos in comments
2022-04-04 10:32:50 +01:00
module.c
kasan, arm64: don't tag executable vmalloc allocations
2022-03-24 19:06:48 -07:00
mte.c
arm64: mte: Ensure the cleared tags are visible before setting the PTE
2022-05-17 14:29:51 +01:00
paravirt.c
arm64: paravirt: Use RCU read locks to guard stolen_time
2022-05-17 14:23:37 +01:00
patching.c
arm64: patch_text: Fixup last cpu should be master
2022-04-08 11:43:46 +01:00
pci.c
arm64: PCI: Support root bridge preparation for Hyper-V
2021-08-23 10:59:26 +01:00
perf_callchain.c
Peter Zijlstra says:
2022-01-12 16:26:58 -08:00
perf_event.c
arm64: perf: Expose some Armv9 common events under sysfs
2022-03-08 11:40:44 +00:00
perf_regs.c
perf/arch: Remove perf_sample_data::regs_user_copy
2020-11-09 18:12:34 +01:00
pointer_auth.c
arm64: move preemption disablement to prctl handlers
2021-07-28 18:33:49 +01:00
process.c
arm64/mte: Remove asymmetric mode from the prctl() interface
2022-03-09 18:14:56 +00:00
proton-pack.c
arm64: Add part number for Arm Cortex-A78AE
2022-04-08 11:46:46 +01:00
psci.c
arm64: use function_nocfi with __pa_symbol
2021-04-08 16:04:22 -07:00
ptrace.c
ptrace: Create ptrace_report_syscall_{entry,exit} in ptrace.h
2022-03-10 13:35:08 -06:00
reloc_test_core.c
…
reloc_test_syms.S
arm64: kernel: Convert to modern annotations for assembly functions
2020-05-04 12:46:03 +01:00
relocate_kernel.S
arm64: kexec: load from kimage prior to clobbering
2022-05-17 14:25:35 +01:00
return_address.c
arm64: Make return_address() use arch_stack_walk()
2021-12-10 14:06:04 +00:00
sdei.c
arm64: kernel: add helper for booted at EL2 and not VHE
2021-10-01 13:30:59 +01:00
setup.c
drivers/base/node: consolidate node device subsystem initialization in node_dev_init()
2022-03-22 15:57:10 -07:00
signal32.c
arm64 updates for 5.15:
2021-09-01 15:04:29 -07:00
signal.c
ptrace: Cleanups for v5.18
2022-03-28 17:29:53 -07:00
sigreturn32.S
…
sleep.S
kasan: remove redundant config option
2021-04-16 16:10:36 -07:00
smccc-call.S
arm64: smccc: Save lr before calling __arm_smccc_sve_check()
2021-07-21 11:23:25 +01:00
smp_spin_table.c
arm64: Rename arm64-internal cache maintenance functions
2021-05-25 19:27:49 +01:00
smp.c
arch/arm64: Fix topology initialization for core scheduling
2022-04-04 10:24:22 +01:00
stacktrace.c
arm64: Mark start_backtrace() notrace and NOKPROBE_SYMBOL
2022-01-24 14:25:20 +00:00
suspend.c
arm64: fix typos in comments
2022-04-04 10:32:50 +01:00
sys32.c
…
sys_compat.c
arm64: drop unused includes of <linux/personality.h>
2022-03-08 10:23:42 +00:00
sys.c
…
syscall.c
arm64: Snapshot thread flags
2021-12-01 00:06:44 +01:00
time.c
arm64: Make profile_pc() use arch_stack_walk()
2021-12-10 14:06:04 +00:00
topology.c
topology: Represent clusters of CPUs within a die
2021-10-15 11:25:15 +02:00
trace-events-emulation.h
…
traps.c
asm-generic updates for 5.18
2022-03-23 18:03:08 -07:00
vdso32-wrap.S
arm64: do not descend to vdso directories twice
2021-01-20 12:18:46 +00:00
vdso-wrap.S
arm64: do not descend to vdso directories twice
2021-01-20 12:18:46 +00:00
vdso.c
Merge branches 'for-next/misc', 'for-next/kselftest', 'for-next/xntable', 'for-next/vdso', 'for-next/fiq', 'for-next/epan', 'for-next/kasan-vmalloc', 'for-next/fgt-boot-init', 'for-next/vhe-only' and 'for-next/neon-softirqs-disabled', remote-tracking branch 'arm64/for-next/perf' into for-next/core
2021-04-15 14:00:38 +01:00
vmlinux.lds.S
arm64: entry: Allow the trampoline text to occupy multiple pages
2022-02-15 17:40:28 +00:00