[PATCH v3 00/39] x86: Kernel IBT

Peter Zijlstra
2022-03-03T11:34:10Z

Hi, another week, another series.

Since last time:

- fixed and tested kexec (redgecomb)
- s/4*HAS_KERNEL_IBT/ENDBR_INSN_SIZE/ (jpoimboe)
- re-arranged Xen patches to avoid churn (andyhpp)
- folded IBT_SEAL Kconfig and objtool options (jpoimboe)
- dropped direct call/jmp rewrite from objtool (jpoimboe)
- dropped UD1 poison (jpoimboe)
- fixed kprobe selftests (masami,naveen)
- fixed ftrace selftests (rostedt)
- simplified CET/INT3 selftests (jpoimboe)
- boot time msg on IBT (kees)
- objtool WARN_FUNC sym+off fallback (jpoimboe)
- picked up tags for unchanged patches
- probably more

Supposedly clang-14-rc2 will work on this series, I'll validate the moment the
Debian package gets updated.

Patches go on top of tip/master + arm64/for-next/linkage. Also available here:

git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git x86/wip.ibt

Enjoy!

---
arch/powerpc/include/asm/livepatch.h | 10 -
arch/powerpc/kernel/kprobes.c | 34 +--
arch/um/kernel/um_arch.c | 4 +
arch/x86/Kconfig | 27 +++
arch/x86/Makefile | 7 +-
arch/x86/crypto/crc32c-pcl-intel-asm_64.S | 3 +
arch/x86/entry/entry_64.S | 27 ++-
arch/x86/entry/entry_64_compat.S | 5 +
arch/x86/include/asm/alternative.h | 1 +
arch/x86/include/asm/cpu.h | 4 +
arch/x86/include/asm/cpufeatures.h | 1 +
arch/x86/include/asm/efi.h | 9 +-
arch/x86/include/asm/ibt.h | 92 ++++++++
arch/x86/include/asm/idtentry.h | 25 +-
arch/x86/include/asm/irqflags.h | 5 -
arch/x86/include/asm/linkage.h | 39 ++++
arch/x86/include/asm/msr-index.h | 20 +-
arch/x86/include/asm/paravirt.h | 1 +
arch/x86/include/asm/paravirt_types.h | 1 -
arch/x86/include/asm/qspinlock_paravirt.h | 3 +
arch/x86/include/asm/segment.h | 5 +-
arch/x86/include/asm/setup.h | 3 +-
arch/x86/include/asm/text-patching.h | 30 ++-
arch/x86/include/asm/traps.h | 2 +
arch/x86/include/uapi/asm/processor-flags.h | 2 +
arch/x86/kernel/alternative.c | 57 ++++-
arch/x86/kernel/apm_32.c | 7 +
arch/x86/kernel/cpu/bugs.c | 13 ++
arch/x86/kernel/cpu/common.c | 59 ++++-
arch/x86/kernel/ftrace.c | 9 +-
arch/x86/kernel/ftrace_64.S | 23 +-
arch/x86/kernel/head_64.S | 14 +-
arch/x86/kernel/idt.c | 9 +-
arch/x86/kernel/kprobes/core.c | 29 ++-
arch/x86/kernel/kvm.c | 3 +-
arch/x86/kernel/machine_kexec_64.c | 2 +
arch/x86/kernel/module.c | 21 +-
arch/x86/kernel/paravirt.c | 29 +--
arch/x86/kernel/relocate_kernel_64.S | 10 +
arch/x86/kernel/traps.c | 61 +++++
arch/x86/kernel/vmlinux.lds.S | 9 +
arch/x86/kvm/emulate.c | 6 +-
arch/x86/lib/error-inject.c | 2 +
arch/x86/lib/retpoline.S | 1 +
arch/x86/net/bpf_jit_comp.c | 16 +-
arch/x86/xen/enlighten_pv.c | 10 +-
arch/x86/xen/xen-asm.S | 10 +
arch/x86/xen/xen-head.S | 8 +-
include/asm-generic/vmlinux.lds.h | 4 +
include/linux/cfi.h | 11 +-
include/linux/kprobes.h | 3 +-
include/linux/objtool.h | 16 ++
kernel/bpf/trampoline.c | 20 +-
kernel/kprobes.c | 66 ++++--
kernel/livepatch/patch.c | 19 +-
kernel/trace/ftrace.c | 34 ++-
samples/ftrace/ftrace-direct-modify.c | 5 +
samples/ftrace/ftrace-direct-multi-modify.c | 10 +-
samples/ftrace/ftrace-direct-multi.c | 5 +-
samples/ftrace/ftrace-direct-too.c | 3 +
samples/ftrace/ftrace-direct.c | 3 +
scripts/Makefile.build | 44 +---
scripts/Makefile.lib | 56 +++++
scripts/Makefile.modfinal | 1 +
scripts/link-vmlinux.sh | 12 +-
tools/objtool/arch/x86/decode.c | 34 ++-
tools/objtool/builtin-check.c | 8 +-
tools/objtool/check.c | 346 +++++++++++++++++++++++++++-
tools/objtool/elf.c | 3 +
tools/objtool/include/objtool/arch.h | 1 +
tools/objtool/include/objtool/builtin.h | 3 +-
tools/objtool/include/objtool/check.h | 14 +-
tools/objtool/include/objtool/objtool.h | 4 +
tools/objtool/include/objtool/warn.h | 2 +
tools/objtool/objtool.c | 1 +
75 files changed, 1254 insertions(+), 242 deletions(-)