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linux-stable/arch/x86/kernel
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Masami Hiramatsu (Google) 63dc6325ff x86/kprobes: Fix optprobe optimization check with CONFIG_RETHUNK 
Since the CONFIG_RETHUNK and CONFIG_SLS will use INT3 for stopping
speculative execution after function return, kprobe jump optimization
always fails on the functions with such INT3 inside the function body.
(It already checks the INT3 padding between functions, but not inside
 the function)

To avoid this issue, as same as kprobes, check whether the INT3 comes
from kgdb or not, and if so, stop decoding and make it fail. The other
INT3 will come from CONFIG_RETHUNK/CONFIG_SLS and those can be
treated as a one-byte instruction.

Fixes: e463a09af2 ("x86: Add straight-line-speculation mitigation")
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/167146051929.1374301.7419382929328081706.stgit@devnote3
2022-12-27 12:51:58 +01:00
..
acpi x86/acpi/cstate: Optimize ARB_DISABLE on Centaur CPUs 2022-11-11 09:42:05 -08:00
apic A set of changes for the x86 APIC code: 2022-12-12 12:30:31 -08:00
cpu Driver Core changes for 6.2-rc1 2022-12-16 03:54:54 -08:00
fpu * Clarify XSAVE consistency warnings 2022-12-12 14:41:57 -08:00
kprobes x86/kprobes: Fix optprobe optimization check with CONFIG_RETHUNK 2022-12-27 12:51:58 +01:00
.gitignore
alternative.c New Feature: 2022-12-17 14:06:53 -06:00
amd_gart_64.c x86/mm: Remove P*D_PAGE_MASK and P*D_PAGE_SIZE macros 2022-12-15 10:37:27 -08:00
amd_nb.c x86/amd_nb: Add AMD PCI IDs for SMN communication 2022-07-20 17:35:40 +02:00
aperture_64.c x86: Fix various duplicate-word comment typos 2022-08-15 19:17:52 +02:00
apm_32.c x86/ibt: Disable IBT around firmware 2022-03-15 10:32:40 +01:00
asm-offsets.c Linux 6.1-rc6 2022-11-21 23:01:51 +01:00
asm-offsets_32.c
asm-offsets_64.c x86: Fixup asm-offsets duplicate 2022-10-17 16:41:06 +02:00
audit_64.c audit: add support for the openat2 syscall 2021-10-01 16:52:48 -04:00
bootflag.c
callthunks.c x86/calldepth: Fix incorrect init section references 2022-12-27 12:51:58 +01:00
cfi.c x86: Add support for CONFIG_CFI_CLANG 2022-09-26 10:13:16 -07:00
check.c
cpuid.c driver core: make struct class.devnode() take a const * 2022-11-24 17:12:27 +01:00
crash.c x86/crash: Fix minor typo/bug in debug message 2022-04-13 19:39:54 +02:00
crash_core_32.c
crash_core_64.c
crash_dump_32.c vmcore: convert copy_oldmem_page() to take an iov_iter 2022-04-29 14:37:59 -07:00
crash_dump_64.c use less confusing names for iov_iter direction initializers 2022-11-25 13:01:55 -05:00
devicetree.c x86/of: Add support for boot time interrupt delivery mode configuration 2022-12-02 14:57:14 +01:00
doublefault_32.c exit/doublefault: Remove apparently bogus comment about rewind_stack_do_exit 2021-10-20 13:09:43 -05:00
dumpstack.c - Yu Zhao's Multi-Gen LRU patches are here. They've been under test in 2022-10-10 17:53:04 -07:00
dumpstack_32.c x86/percpu: Move irq_stack variables next to current_task 2022-10-17 16:41:05 +02:00
dumpstack_64.c x86/percpu: Move irq_stack variables next to current_task 2022-10-17 16:41:05 +02:00
e820.c x86/kexec: Carry forward IMA measurement log on kexec 2022-07-01 15:22:16 +02:00
early-quirks.c drm/i915/rpl-p: Add PCI IDs 2022-04-19 17:14:09 -07:00
early_printk.c x86/earlyprintk: Clean up pciserial 2022-08-29 12:19:25 +02:00
ebda.c
eisa.c
espfix_64.c x86/espfix: Use get_random_long() rather than archrandom 2022-10-31 20:12:50 +01:00
ftrace.c New Feature: 2022-12-17 14:06:53 -06:00
ftrace_32.S x86: Prepare asm files for straight-line-speculation 2021-12-08 12:25:37 +01:00
ftrace_64.S Merge branch 'x86/urgent' into x86/core, to resolve conflict 2022-10-22 10:06:18 +02:00
head32.c
head64.c x86/mm: Remove P*D_PAGE_MASK and P*D_PAGE_SIZE macros 2022-12-15 10:37:27 -08:00
head_32.S x86/asm/32: Remove setup_once() 2022-12-02 14:06:34 +01:00
head_64.S x86/callthunks: Add call patching for call depth tracking 2022-10-17 16:41:13 +02:00
hpet.c rtc: Check return value from mc146818_get_time() 2021-12-16 21:50:06 +01:00
hw_breakpoint.c x86/mm: Randomize per-cpu entry area 2022-12-15 10:37:26 -08:00
i8237.c
i8253.c
i8259.c x86/i8259: Make default_legacy_pic static 2022-10-31 10:20:32 +01:00
idt.c x86/traps: Add #VE support for TDX guest 2022-04-07 08:27:51 -07:00
io_delay.c
ioport.c
irq.c x86/irq: Ensure PI wakeup handler is unregistered before module unload 2021-10-22 12:45:35 -04:00
irq_32.c x86/percpu: Move irq_stack variables next to current_task 2022-10-17 16:41:05 +02:00
irq_64.c x86/percpu: Move irq_stack variables next to current_task 2022-10-17 16:41:05 +02:00
irq_work.c
irqflags.S x86: Prepare asm files for straight-line-speculation 2021-12-08 12:25:37 +01:00
irqinit.c
itmt.c x86/sched: Decrease further the priorities of SMT siblings 2021-10-05 15:51:59 +02:00
jailhouse.c
jump_label.c jump_label: make initial NOP patching the special case 2022-06-24 09:48:55 +02:00
kdebugfs.c x86/boot: Fix memremap of setup_indirect structures 2022-03-09 12:49:44 +01:00
kexec-bzimage64.c integrity-v6.0 2022-08-02 15:21:18 -07:00
kgdb.c
ksysfs.c x86/boot: Fix memremap of setup_indirect structures 2022-03-09 12:49:44 +01:00
kvm.c ARM64: 2022-12-15 11:12:21 -08:00
kvmclock.c x86/kvm: Don't waste kvmclock memory if there is nopv parameter 2022-04-13 13:37:19 -04:00
ldt.c memcg: enable accounting for ldt_struct objects 2021-09-03 09:58:13 -07:00
machine_kexec_32.c x86/kexec: Set_[gi]dt() -> native_[gi]dt_invalidate() in machine_kexec_*.c 2021-05-21 12:36:45 +02:00
machine_kexec_64.c x86/kexec: fix memory leak of elf header buffer 2022-06-01 15:57:16 -07:00
Makefile - Add the call depth tracking mitigation for Retbleed which has 2022-12-14 15:03:00 -08:00
mmconf-fam10h_64.c x86/msr: Rename MSR_K8_SYSCFG to MSR_AMD64_SYSCFG 2021-05-10 07:51:38 +02:00
module.c - Add the call depth tracking mitigation for Retbleed which has 2022-12-14 15:03:00 -08:00
mpparse.c x86: Avoid magic number with ELCR register accesses 2021-08-10 23:31:43 +02:00
msr.c driver core: make struct class.devnode() take a const * 2022-11-24 17:12:27 +01:00
nmi.c x86/nmi: Make register_nmi_handler() more robust 2022-05-17 09:25:25 +02:00
nmi_selftest.c
paravirt-spinlocks.c
paravirt.c x86/paravirt: Use common macro for creating simple asm paravirt functions 2022-11-24 13:56:44 +01:00
pci-dma.c swiotlb: merge swiotlb-xen initialization into swiotlb 2022-04-18 07:21:13 +02:00
pcspeaker.c
perf_regs.c
platform-quirks.c
pmem.c x86/pmem: Fix platform-device leak in error path 2022-06-20 18:01:16 +02:00
probe_roms.c x86/kernel: Validate ROM memory before accessing when SEV-SNP is active 2022-04-06 13:23:09 +02:00
process.c Random number generator updates for Linux 6.2-rc1. 2022-12-12 16:22:22 -08:00
process.h x86: Snapshot thread flags 2021-12-01 00:06:43 +01:00
process_32.c x86/percpu: Move current_top_of_stack next to current_task 2022-10-17 16:41:05 +02:00
process_64.c - Add the call depth tracking mitigation for Retbleed which has 2022-12-14 15:03:00 -08:00
ptrace.c x86: Improve formatting of user_regset arrays 2022-11-01 15:36:52 -07:00
pvclock.c
quirks.c
reboot.c x86: Use do_kernel_power_off() 2022-05-19 19:30:31 +02:00
reboot_fixups_32.c
relocate_kernel_32.S x86/kexec: Disable RET on kexec 2022-07-09 13:12:32 +02:00
relocate_kernel_64.S x86/callthunks: Add call patching for call depth tracking 2022-10-17 16:41:13 +02:00
resource.c x86/PCI: Tidy E820 removal messages 2022-12-10 10:33:11 -06:00
rethook.c x86,rethook: Fix arch_rethook_trampoline() to generate a complete pt_regs 2022-03-28 19:38:51 -07:00
rtc.c x86/rtc: Rename mach_set_rtc_mmss() to mach_set_cmos_time() 2022-08-14 11:24:29 +02:00
setup.c - Split MTRR and PAT init code to accomodate at least Xen PV and TDX 2022-12-13 14:56:56 -08:00
setup_percpu.c - Add the call depth tracking mitigation for Retbleed which has 2022-12-14 15:03:00 -08:00
sev-shared.c Revert "x86/sev: Expose sev_es_ghcb_hv_call() for use by HyperV" 2022-07-27 18:09:13 +02:00
sev.c x86/sev: Mark snp_abort() noreturn 2022-08-25 15:54:03 +02:00
sev_verify_cbit.S x86: Prepare asm files for straight-line-speculation 2021-12-08 12:25:37 +01:00
signal.c x86/signal/64: Move 64-bit signal code to its own file 2022-10-19 09:58:49 +02:00
signal_32.c x86/signal/32: Merge native and compat 32-bit signal code 2022-10-19 09:58:49 +02:00
signal_64.c x86/signal/64: Move 64-bit signal code to its own file 2022-10-19 09:58:49 +02:00
signal_compat.c signal: Deliver SIGTRAP on perf event asynchronously if blocked 2022-04-22 12:14:05 +02:00
smp.c
smpboot.c - Add the call depth tracking mitigation for Retbleed which has 2022-12-14 15:03:00 -08:00
stacktrace.c x86: remove __range_not_ok() 2022-02-25 09:36:05 +01:00
static_call.c static_call: Add call depth tracking support 2022-10-17 16:41:16 +02:00
step.c ptrace: Reimplement PTRACE_KILL by always sending SIGKILL 2022-05-11 14:34:28 -05:00
sys_ia32.c
sys_x86_64.c x86/mm: Cleanup the control_va_addr_alignment() __setup handler 2022-05-04 18:20:42 +02:00
tboot.c mm: remove rb tree. 2022-09-26 19:46:16 -07:00
time.c
tls.c
tls.h
topology.c x86/cpu: Switch to cpu_feature_enabled() for X86_FEATURE_XENPV 2022-11-22 16:18:19 +01:00
trace.c trace/osnoise: Fix an ifdef comment 2021-10-25 23:02:36 -04:00
trace_clock.c
tracepoint.c x86/traceponit: Fix comment about irq vector tracepoints 2022-05-26 22:03:52 -04:00
traps.c - Add the call depth tracking mitigation for Retbleed which has 2022-12-14 15:03:00 -08:00
tsc.c x86/tsc: Make art_related_clocksource static 2022-10-17 16:20:48 +02:00
tsc_msr.c
tsc_sync.c x86/tsc: Add a timer to make sure TSC_adjust is always checked 2021-12-02 00:40:35 +01:00
umip.c x86/umip: Downgrade warning messages to debug loglevel 2021-09-25 13:23:28 +02:00
unwind_frame.c x86: kmsan: don't instrument stack walking functions 2022-10-03 14:03:25 -07:00
unwind_guess.c x86/unwind: Recover kretprobe trampoline entry 2021-09-30 21:24:07 -04:00
unwind_orc.c Linux 6.1-rc6 2022-11-21 23:01:51 +01:00
uprobes.c uprobes/x86: Allow to probe a NOP instruction with 0x66 prefix 2022-12-05 11:55:18 +01:00
verify_cpu.S x86: Prepare asm files for straight-line-speculation 2021-12-08 12:25:37 +01:00
vm86_32.c x86/32: Remove lazy GS macros 2022-04-14 14:09:43 +02:00
vmlinux.lds.S x86/ibt: Implement FineIBT 2022-11-01 13:44:10 +01:00
vsmp_64.c
x86_init.c x86/boot: Skip realmode init code when running as Xen PV guest 2022-11-25 12:05:22 +01:00