Ada Couprie Diaz ea0d55ae4b arm64: debug: always unmask interrupts in el0_softstp() ... We intend that EL0 exception handlers unmask all DAIF exceptions before calling exit_to_user_mode(). When completing single-step of a suspended breakpoint, we do not call local_daif_restore(DAIF_PROCCTX) before calling exit_to_user_mode(), leaving all DAIF exceptions masked. When pseudo-NMIs are not in use this is benign. When pseudo-NMIs are in use, this is unsound. At this point interrupts are masked by both DAIF.IF and PMR_EL1, and subsequent irq flag manipulation may not work correctly. For example, a subsequent local_irq_enable() within exit_to_user_mode_loop() will only unmask interrupts via PMR_EL1 (leaving those masked via DAIF.IF), and anything depending on interrupts being unmasked (e.g. delivery of signals) will not work correctly. This was detected by CONFIG_ARM64_DEBUG_PRIORITY_MASKING. Move the call to `try_step_suspended_breakpoints()` outside of the check so that interrupts can be unmasked even if we don't call the step handler. Fixes: 0ac7584c08 ("arm64: debug: split single stepping exception entry") Cc: <stable@vger.kernel.org> # 6.17 Signed-off-by: Ada Couprie Diaz <ada.coupriediaz@arm.com> Acked-by: Mark Rutland <mark.rutland@arm.com> [catalin.marinas@arm.com: added Mark's rewritten commit log and some whitespace] Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>		2025-10-17 18:08:05 +01:00
..
pi	arm64: map [_text, _stext) virtual address range non-executable+read-only	2025-09-22 11:58:17 +01:00
probes	arm64: kprobes: call set_memory_rox() for kprobe page	2025-09-25 13:56:48 +01:00
vdso	stackleak: Split KSTACK_ERASE_CFLAGS from GCC_PLUGINS_CFLAGS	2025-07-21 21:40:57 -07:00
vdso32	Updates for the VDSO subsystem:	2025-09-30 16:58:21 -07:00
.gitignore	…
Makefile	arm64 updates for 6.17:	2025-07-29 20:21:54 -07:00
Makefile.syscalls	…
acpi.c	Merge branch 'for-next/entry' into for-next/core	2025-09-24 16:34:02 +01:00
acpi_numa.c	…
acpi_parking_protocol.c	…
alternative.c	…
armv8_deprecated.c	…
asm-offsets.c	arch: Add the macro COMPILE_OFFSETS to all the asm-offsets.c	2025-09-25 09:57:15 +02:00
cacheinfo.c	arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array	2025-02-07 09:57:56 +00:00
compat_alignment.c	arm64: Don't call NULL in do_compat_alignment_fixup()	2025-04-01 14:13:11 +01:00
cpu-reset.S	…
cpu_errata.c	arm64: errata: Apply workarounds for Neoverse-V3AE	2025-09-22 11:27:14 +01:00
cpu_ops.c	…
cpufeature.c	arm64 fixes for -rc1	2025-10-07 08:59:25 -07:00
cpuinfo.c	arm64/hwcap: Add hwcap for FEAT_LSFE	2025-09-16 19:55:11 +01:00
crash_dump.c	…
debug-monitors.c	arm64 updates for 6.18	2025-09-29 18:48:39 -07:00
efi-header.S	include: pe.h: Fix PE definitions	2025-05-21 16:46:37 +02:00
efi-rt-wrapper.S	…
efi.c	arm64: efi: Remove CONFIG_VMAP_STACK check	2025-07-08 13:41:08 +01:00
elfcore.c	fs: avoid mmap sem relocks when coredumping with many missing pages	2025-02-21 10:25:32 +01:00
entry-common.c	arm64: debug: always unmask interrupts in el0_softstp()	2025-10-17 18:08:05 +01:00
entry-fpsimd.S	…
entry-ftrace.S	fgraph: Replace fgraph_ret_regs with ftrace_regs	2024-12-26 10:50:02 -05:00
entry.S	arm64 updates for 6.17:	2025-07-29 20:21:54 -07:00
fpsimd.c	arm64/fpsimd: simplify sme_setup()	2025-09-16 21:05:48 +01:00
ftrace.c	arm64: ftrace: fix unreachable PLT for ftrace_caller in init_module with CONFIG_DYNAMIC_FTRACE	2025-09-05 16:56:20 +01:00
head.S	arm64/boot: Move init_pgdir[] and init_idmap_pgdir[] into __pi_ namespace	2025-05-16 16:05:21 +01:00
hibernate-asm.S	…
hibernate.c	…
hw_breakpoint.c	arm64: debug: split hardware watchpoint exception entry	2025-07-08 13:27:42 +01:00
hyp-stub.S	arm64: errata: Work around AmpereOne's erratum AC04_CPU_23	2025-05-19 12:46:26 +01:00
idle.c	…
image-vars.h	KVM: arm64: Don't access ICC_SRE_EL2 if GICv3 doesn't support v2 compatibility	2025-09-17 17:40:42 +01:00
image.h	…
io.c	…
irq.c	arm64: remove CONFIG_VMAP_STACK conditionals from irq stack setup	2025-07-08 13:41:08 +01:00
jump_label.c	…
kaslr.c	arm64/mm: Remove randomization of the linear map	2025-04-29 13:21:49 +01:00
kexec_image.c	…
kgdb.c	arm64: debug: call step handlers statically	2025-07-08 13:27:41 +01:00
kuser32.S	…
machine_kexec.c	kexec: Consolidate machine_kexec_mask_interrupts() implementation	2024-12-11 20:32:34 +01:00
machine_kexec_file.c	arm64: kexec: initialize kexec_buf struct in load_other_segments()	2025-09-03 17:10:37 -07:00
module-plts.c	arm64: ftrace: fix unreachable PLT for ftrace_caller in init_module with CONFIG_DYNAMIC_FTRACE	2025-09-05 16:56:20 +01:00
module.c	arm64: ftrace: fix unreachable PLT for ftrace_caller in init_module with CONFIG_DYNAMIC_FTRACE	2025-09-05 16:56:20 +01:00
mte.c	arm64 fixes for -rc1	2025-10-07 08:59:25 -07:00
paravirt.c	…
patching.c	arm64: patching: avoid early page_to_phys()	2024-12-03 18:05:42 +00:00
pci.c	…
perf_callchain.c	…
perf_regs.c	…
pointer_auth.c	…
process.c	arch: copy_thread: pass clone_flags as u64	2025-09-01 15:31:34 +02:00
proton-pack.c	arm64: errata: Expand speculative SSBS workaround for Cortex-A720AE	2025-09-18 11:41:24 +01:00
psci.c	…
ptrace.c	execve updates for v6.17	2025-07-28 17:11:40 -07:00
reloc_test_core.c	…
reloc_test_syms.S	…
relocate_kernel.S	…
return_address.c	…
rsi.c	arm64: realm: ioremap: Allow mapping memory as encrypted	2025-09-19 10:12:01 +01:00
sdei.c	arm64: ptrace: Replace interrupts_enabled() with regs_irqs_disabled()	2025-09-11 15:55:34 +01:00
setup.c	arm64: map [_text, _stext) virtual address range non-executable+read-only	2025-09-22 11:58:17 +01:00
signal.c	arm64: entry: Switch to generic IRQ entry	2025-09-11 15:55:35 +01:00
signal32.c	arm64/fpsimd: signal32: Always save+flush state early	2025-04-09 18:06:31 +01:00
sigreturn32.S	…
sleep.S	…
smccc-call.S	…
smp.c	KVM/arm64 changes for 6.17, round #1	2025-07-29 12:27:40 -04:00
smp_spin_table.c	…
stacktrace.c	Merge branches 'for-next/livepatch', 'for-next/user-contig-bbml2', 'for-next/misc', 'for-next/acpi', 'for-next/debug-entry', 'for-next/feat_mte_tagged_far', 'for-next/kselftest', 'for-next/mdscr-cleanup' and 'for-next/vmap-stack', remote-tracking branch 'arm64/for-next/perf' into for-next/core	2025-07-24 16:01:22 +01:00
suspend.c	…
sys.c	…
sys32.c	…
sys_compat.c	…
syscall.c	arm/syscalls: mark syscall invocation as likely in invoke_syscall	2025-09-22 13:26:16 +01:00
time.c	…
topology.c	Merge branch 'for-next/smt-control' into for-next/core	2025-03-25 19:32:28 +00:00
trace-events-emulation.h	…
traps.c	guest_memfd:	2025-10-04 08:52:16 -07:00
vdso-wrap.S	…
vdso.c	mseal sysmap: enable arm64	2025-04-01 15:17:15 -07:00
vdso32-wrap.S	…
vmcore_info.c	…
vmlinux.lds.S	ARM:	2025-05-29 08:10:01 -07:00
watchdog_hld.c	arm64/watchdog_hld: Add a cpufreq notifier for update watchdog thresh	2025-07-04 13:17:30 +01:00