korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-12-11 21:14:07 +08:00
Code Issues Packages Projects Releases Wiki Activity
b7c510d049
linux/arch/arm64/kernel
History
Mark Brown b7c510d049 arm64/ptrace: Don't flush ZA/ZT storage when writing ZA via ptrace 
When writing ZA we currently unconditionally flush the buffer used to store
it as part of ensuring that it is allocated. Since this buffer is shared
with ZT0 this means that a write to ZA when PSTATE.ZA is already set will
corrupt the value of ZT0 on a SME2 system. Fix this by only flushing the
backing storage if PSTATE.ZA was not previously set.

This will mean that short or failed writes may leave stale data in the
buffer, this seems as correct as our current behaviour and unlikely to be
something that userspace will rely on.

Fixes: f90b529bcb ("arm64/sme: Implement ZT0 ptrace support")
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20240115-arm64-fix-ptrace-za-zt-v1-1-48617517028a@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
2024-01-18 11:04:17 +00:00
..
pi arm64: kernel: Disable latent_entropy GCC plugin in early C runtime 2023-12-12 11:06:27 +00:00
probes arm64: kprobes: Drop ID map text from kprobes blacklist 2023-02-07 18:25:10 +00:00
vdso kbuild: unify vdso_install rules 2023-10-28 21:09:02 +09:00
vdso32 arm64: vdso32: rename 32-bit debug vdso to vdso32.so.dbg 2023-12-05 11:49:53 +00:00
.gitignore
acpi_numa.c arm64: numa: Don't check node against MAX_NUMNODES 2022-07-19 19:10:28 +01:00
acpi_parking_protocol.c arm64: smp: Remove dedicated wakeup IPI 2023-09-25 17:15:28 +01:00
acpi.c arm64: acpi: Fix possible memory leak of ffh_ctxt 2023-02-24 14:21:49 +00:00
alternative.c Merge branches 'for-next/kpti', 'for-next/missing-proto-warn', 'for-next/iss2-decode', 'for-next/kselftest', 'for-next/misc', 'for-next/feat_mops', 'for-next/module-alloc', 'for-next/sysreg', 'for-next/cpucap', 'for-next/acpi', 'for-next/kdump', 'for-next/acpi-doc', 'for-next/doc' and 'for-next/tpidr2-fix', remote-tracking branch 'arm64/for-next/perf' into for-next/core 2023-06-23 18:32:20 +01:00
armv8_deprecated.c arm: Remove now superfluous sentinel elem from ctl_table arrays 2023-10-10 15:22:02 -07:00
asm-offsets.c arm64: fpsimd: Bring cond_yield asm macro in line with new rules 2024-01-12 12:48:27 +00:00
cacheinfo.c cacheinfo: Add arm64 early level initializer implementation 2023-04-13 09:32:33 +01:00
compat_alignment.c arm64: compat: Work around uninitialized variable warning 2023-04-05 17:51:47 +01:00
cpu_errata.c arm64: errata: Add Cortex-A510 speculative unprivileged load workaround 2024-01-12 12:51:33 +00:00
cpu_ops.c
cpu-reset.S arm64: kernel: remove SHF_WRITE|SHF_EXECINSTR from .idmap.text 2023-05-02 12:42:22 +01:00
cpufeature.c Merge branch 'for-next/fixes' into for-next/core 2024-01-04 12:32:33 +00:00
cpuidle.c arm64: Explicitly include correct DT includes 2023-07-31 14:45:38 +01:00
cpuinfo.c arm64: Kill detection of VPIPT i-cache policy 2023-12-05 11:38:03 +00:00
crash_core.c arm64: move PAC masks to <asm/pointer_auth.h> 2023-04-13 12:27:11 +01:00
crash_dump.c vmcore: convert copy_oldmem_page() to take an iov_iter 2022-04-29 14:37:59 -07:00
debug-monitors.c arm64: kgdb: Set PSTATE.SS to 1 to re-enable single-step 2023-04-14 13:39:47 +01:00
efi-header.S arm64: efi: Enable BTI codegen and add PE/COFF annotation 2023-04-20 15:43:45 +02:00
efi-rt-wrapper.S arm64: efi: Avoid workqueue to check whether EFI runtime is live 2023-01-16 15:27:31 +01:00
efi.c TTY/Serial changes for 6.7-rc1 2023-11-03 15:44:25 -10:00
elfcore.c arm64: mte: Avoid the racy walk of the vma list during core dump 2023-01-05 15:12:12 +00:00
entry-common.c arm64: syscall: unmask DAIF earlier for SVCs 2023-08-11 12:23:48 +01:00
entry-fpsimd.S arm64/sme: Implement context switching for ZT0 2023-01-20 12:23:06 +00:00
entry-ftrace.S arm64: ftrace: Enable HAVE_FUNCTION_GRAPH_RETVAL 2023-06-20 18:38:37 -04:00
entry.S arm64: entry: simplify kernel_exit logic 2024-01-18 11:00:09 +00:00
fpsimd.c Merge branch 'for-next/fpsimd' into for-next/core 2024-01-04 12:27:29 +00:00
ftrace.c arm64: module: mandate MODULE_PLTS 2023-06-06 17:39:05 +01:00
head.S arm64: mm: get rid of kimage_vaddr global variable 2023-12-12 11:06:28 +00:00
hibernate-asm.S arm64: kexec: install a copy of the linear-map 2021-10-01 13:31:00 +01:00
hibernate.c arm64: hibernate: remove WARN_ON in save_processor_state 2023-06-21 13:33:49 +01:00
hw_breakpoint.c hw_breakpoint: fix single-stepping when using bpf_overflow_handler 2023-08-18 17:04:09 +01:00
hyp-stub.S ARM64: 2023-07-03 15:32:22 -07:00
idle.c arm64: idle: Tag the arm64 idle functions as __cpuidle 2023-09-25 17:15:28 +01:00
idreg-override.c arm64/kernel: Move 'nokaslr' parsing out of early idreg code 2023-12-12 11:13:53 +00:00
image-vars.h efi: move screen_info into efi init code 2023-10-17 16:33:39 +02:00
image.h
io.c
irq.c arm64: irq: set the correct node for shadow call stack 2023-12-13 12:09:00 +00:00
jump_label.c jump_label: make initial NOP patching the special case 2022-06-24 09:48:55 +02:00
kaslr.c arm64/kernel: Move 'nokaslr' parsing out of early idreg code 2023-12-12 11:13:53 +00:00
kexec_image.c arm64: Fix dangling references to Documentation/arm64 2023-06-21 08:53:31 -06:00
kgdb.c arm64: kgdb: Set PSTATE.SS to 1 to re-enable single-step 2023-04-14 13:39:47 +01:00
kuser32.S arm64: Update Documentation/arm references 2023-06-12 06:33:48 -06:00
machine_kexec_file.c arm64/kexec: Fix missing extra range for crashkres_low. 2022-09-01 11:50:00 +01:00
machine_kexec.c Merge branch 'for-next/misc' into for-next/core 2023-04-20 11:22:09 +01:00
Makefile arm64: scs: Work around full LTO issue with dynamic SCS 2024-01-12 12:47:19 +00:00
module-plts.c Merge branch 'for-next/cpus_have_const_cap' into for-next/core 2023-10-26 17:10:18 +01:00
module.c arm64: module: rework module VA range selection 2023-06-06 17:39:06 +01:00
mte.c Many singleton patches against the MM code. The patch series which are 2023-11-02 19:38:47 -10:00
paravirt.c arm64: paravirt: remove conduit check in has_pv_steal_clock 2022-11-09 18:11:56 +00:00
patch-scs.c arm64: Apply dynamic shadow call stack patching in two passes 2023-01-26 17:54:15 +00:00
patching.c arm64: patching: Add aarch64_insn_write_literal_u64() 2023-01-24 11:49:43 +00:00
pci.c arm64: Explicitly include correct DT includes 2023-07-31 14:45:38 +01:00
perf_callchain.c arm64: use XPACLRI to strip PAC 2023-04-13 12:27:11 +01:00
perf_regs.c perf: arm64: Add SVE vector granule register to user regs 2022-09-22 15:06:02 +01:00
pointer_auth.c arm64: move preemption disablement to prctl handlers 2021-07-28 18:33:49 +01:00
process.c sysctl-6.7-rc1 2023-11-01 20:51:41 -10:00
proton-pack.c arm64: Avoid cpus_have_const_cap() for ARM64_UNMAP_KERNEL_AT_EL0 2023-10-16 14:17:06 +01:00
psci.c treewide: Drop function_nocfi 2022-09-26 10:13:14 -07:00
ptrace.c arm64/ptrace: Don't flush ZA/ZT storage when writing ZA via ptrace 2024-01-18 11:04:17 +00:00
reloc_test_core.c ARM64: reloc_test: add __init/__exit annotations to module init/exit funcs 2022-09-29 18:04:25 +01:00
reloc_test_syms.S
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: sdei: abort running SDEI handlers during crash 2023-08-04 17:35:33 +01:00
setup.c arm64: kaslr: split kaslr/module initialization 2023-06-06 17:39:05 +01:00
signal32.c x86/shstk: Add user control-protection fault handler 2023-08-02 15:01:50 -07:00
signal.c Add x86 shadow stack support 2023-08-31 12:20:12 -07:00
sigreturn32.S arm64: compat: Move sigreturn32.S to .rodata section 2022-07-01 12:05:45 +01:00
sleep.S arm64: kernel: remove SHF_WRITE|SHF_EXECINSTR from .idmap.text 2023-05-02 12:42:22 +01:00
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 treewide: Drop function_nocfi 2022-09-26 10:13:14 -07:00
smp.c arm64: Align boot cpucap handling with system cpucap handling 2023-12-13 16:02:01 +00:00
stacktrace.c arm64: stacktrace: factor out kunwind_stack_walk() 2023-12-11 11:42:55 +00:00
suspend.c arm64: Avoid cpus_have_const_cap() for ARM64_HAS_DIT 2023-10-16 14:17:04 +01:00
sys32.c
sys_compat.c arm64: Avoid cpus_have_const_cap() for ARM64_WORKAROUND_1542419 2023-10-16 14:17:06 +01:00
sys.c
syscall.c arm64: syscall: unmask DAIF earlier for SVCs 2023-08-11 12:23:48 +01:00
time.c arm64: Make profile_pc() use arch_stack_walk() 2021-12-10 14:06:04 +00:00
topology.c RISC-V Patches for the 6.1 Merge Window, Part 1 2022-10-09 13:24:01 -07:00
trace-events-emulation.h
traps.c ARM: 2023-11-02 15:45:15 -10:00
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 arm64: Avoid cpus_have_const_cap() for ARM64_HAS_BTI 2023-10-16 14:17:04 +01:00
vmlinux.lds.S arm64: lds: move .got section out of .text 2023-05-02 13:12:45 +01:00
watchdog_hld.c arm64: enable perf events based hard lockup detector 2023-06-09 17:44:22 -07:00