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Date: Thu, 27 Apr 2023 22:22:24 +0200
From: Ingo Molnar <mingo@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org, Josh Poimboeuf <jpoimboe@...hat.com>,
Peter Zijlstra <peterz@...radead.org>,
Thomas Gleixner <tglx@...utronix.de>,
Borislav Petkov <bp@...en8.de>,
Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [GIT PULL] objtool changes for v6.3
Linus,
Please pull the latest objtool/core git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git objtool-core-2023-04-27
# HEAD: 611d4c716db0141cfc436994dc5aff1d69c924ad x86/hyperv: Mark hv_ghcb_terminate() as noreturn
Objtool changes for v6.4:
- Mark arch_cpu_idle_dead() __noreturn, make all architectures & drivers that did
this inconsistently follow this new, common convention, and fix all the fallout
that objtool can now detect statically.
- Fix/improve the ORC unwinder becoming unreliable due to UNWIND_HINT_EMPTY ambiguity,
split it into UNWIND_HINT_END_OF_STACK and UNWIND_HINT_UNDEFINED to resolve it.
- Fix noinstr violations in the KCSAN code and the lkdtm/stackleak code.
- Generate ORC data for __pfx code
- Add more __noreturn annotations to various kernel startup/shutdown/panic functions.
- Misc improvements & fixes.
MERGE NOTES:
With your latest tree there's 3 new conflicts if this tree is pulled:
arch/x86/include/asm/mshyperv.h
arch/x86/kernel/head_64.S
tools/objtool/check.c
For any double-checking there are -tip internal merge resolutions at:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/merge
Thanks,
Ingo
------------------>
Guilherme G. Piccoli (1):
x86/hyperv: Mark hv_ghcb_terminate() as noreturn
Josh Poimboeuf (50):
alpha/cpu: Expose arch_cpu_idle_dead()'s prototype declaration
alpha/cpu: Make sure arch_cpu_idle_dead() doesn't return
arm/cpu: Add unreachable() to arch_cpu_idle_dead()
arm64/cpu: Mark cpu_die() __noreturn
csky/cpu: Make sure arch_cpu_idle_dead() doesn't return
ia64/cpu: Mark play_dead() __noreturn
loongarch/cpu: Make sure play_dead() doesn't return
loongarch/cpu: Mark play_dead() __noreturn
mips/cpu: Expose play_dead()'s prototype definition
mips/cpu: Make sure play_dead() doesn't return
mips/cpu: Mark play_dead() __noreturn
powerpc/cpu: Mark start_secondary_resume() __noreturn
sh/cpu: Make sure play_dead() doesn't return
sh/cpu: Mark play_dead() __noreturn
sh/cpu: Expose arch_cpu_idle_dead()'s prototype definition
sparc/cpu: Mark cpu_play_dead() __noreturn
x86/cpu: Make sure play_dead() doesn't return
x86/cpu: Mark play_dead() __noreturn
xtensa/cpu: Make sure cpu_die() doesn't return
xtensa/cpu: Mark cpu_die() __noreturn
sched/idle: Make sure weak version of arch_cpu_idle_dead() doesn't return
sched/idle: Mark arch_cpu_idle_dead() __noreturn
objtool: Add objtool_types.h
objtool: Use relative pointers for annotations
objtool: Change UNWIND_HINT() argument order
x86,objtool: Introduce ORC_TYPE_*
x86,objtool: Separate unret validation from unwind hints
x86,objtool: Split UNWIND_HINT_EMPTY in two
sched: Fix KCSAN noinstr violation
lkdtm/stackleak: Fix noinstr violation
Revert "objtool: Support addition to set CFA base"
objtool: Add stackleak instrumentation to uaccess safe list
context_tracking: Fix KCSAN noinstr violation
scripts/objdump-func: Support multiple functions
objtool: Add WARN_INSN()
objtool: Add symbol iteration helpers
objtool: Remove superfluous dead_end_function() check
objtool: Separate prefix code from stack validation code
x86/linkage: Fix padding for typed functions
objtool: Generate ORC data for __pfx code
init: Mark [arch_call_]rest_init() __noreturn
init: Mark start_kernel() __noreturn
x86/head: Mark *_start_kernel() __noreturn
arm64/cpu: Mark cpu_park_loop() and friends __noreturn
cpu: Mark panic_smp_self_stop() __noreturn
cpu: Mark nmi_panic_self_stop() __noreturn
objtool: Include weak functions in global_noreturns check
btrfs: Mark btrfs_assertfail() __noreturn
x86/cpu: Mark {hlt,resume}_play_dead() __noreturn
scsi: message: fusion: Mark mpt_halt_firmware() __noreturn
Philippe Mathieu-Daudé (1):
x86/cpu: Expose arch_cpu_idle_dead()'s prototype definition
Documentation/livepatch/reliable-stacktrace.rst | 2 +-
MAINTAINERS | 2 +-
arch/alpha/kernel/process.c | 4 +-
arch/arm/kernel/smp.c | 6 +-
arch/arm64/include/asm/exception.h | 4 +-
arch/arm64/include/asm/smp.h | 9 +-
arch/arm64/kernel/entry-common.c | 2 +-
arch/arm64/kernel/process.c | 2 +-
arch/arm64/kernel/smp.c | 12 +-
arch/arm64/kernel/traps.c | 3 +-
arch/csky/kernel/smp.c | 4 +-
arch/ia64/kernel/process.c | 6 +-
arch/loongarch/include/asm/smp.h | 2 +-
arch/loongarch/kernel/process.c | 2 +-
arch/loongarch/kernel/smp.c | 2 +-
arch/mips/cavium-octeon/smp.c | 1 +
arch/mips/include/asm/smp.h | 2 +-
arch/mips/kernel/process.c | 2 +-
arch/mips/kernel/smp-bmips.c | 4 +
arch/mips/kernel/smp-cps.c | 1 +
arch/mips/loongson64/smp.c | 2 +
arch/parisc/kernel/process.c | 2 +-
arch/powerpc/include/asm/smp.h | 2 +-
arch/powerpc/kernel/setup_64.c | 2 +-
arch/powerpc/kernel/smp.c | 2 +-
arch/riscv/kernel/cpu-hotplug.c | 2 +-
arch/s390/kernel/idle.c | 2 +-
arch/s390/kernel/setup.c | 2 +-
arch/sh/include/asm/smp-ops.h | 5 +-
arch/sh/kernel/idle.c | 3 +-
arch/sparc/include/asm/smp_64.h | 2 +-
arch/sparc/kernel/process_64.c | 2 +-
arch/x86/entry/entry_64.S | 26 +-
arch/x86/hyperv/ivm.c | 2 +-
arch/x86/include/asm/linkage.h | 2 +-
arch/x86/include/asm/mshyperv.h | 2 +-
arch/x86/include/asm/nospec-branch.h | 14 +-
arch/x86/include/asm/orc_types.h | 12 +-
arch/x86/include/asm/reboot.h | 1 -
arch/x86/include/asm/setup.h | 6 +-
arch/x86/include/asm/smp.h | 5 +-
arch/x86/include/asm/unwind_hints.h | 18 +-
arch/x86/kernel/ftrace_64.S | 2 +-
arch/x86/kernel/head32.c | 2 +-
arch/x86/kernel/head64.c | 4 +-
arch/x86/kernel/head_64.S | 17 +-
arch/x86/kernel/process.c | 5 +-
arch/x86/kernel/reboot.c | 2 +-
arch/x86/kernel/relocate_kernel_64.S | 10 +-
arch/x86/kernel/smpboot.c | 2 +-
arch/x86/kernel/unwind_orc.c | 27 +-
arch/x86/lib/retpoline.S | 6 +-
arch/x86/platform/pvh/head.S | 2 +-
arch/x86/power/cpu.c | 2 +-
arch/x86/xen/xen-asm.S | 4 +-
arch/x86/xen/xen-head.S | 4 +-
arch/xtensa/include/asm/smp.h | 2 +-
arch/xtensa/kernel/smp.c | 4 +-
drivers/message/fusion/mptbase.c | 2 +-
drivers/message/fusion/mptbase.h | 2 +-
drivers/misc/lkdtm/stackleak.c | 6 +
fs/btrfs/messages.c | 2 +-
fs/btrfs/messages.h | 2 +-
include/linux/context_tracking.h | 2 +-
include/linux/cpu.h | 2 +-
include/linux/objtool.h | 81 ++--
include/linux/objtool_types.h | 57 +++
include/linux/sched/task_stack.h | 2 +-
include/linux/smp.h | 4 +-
include/linux/start_kernel.h | 6 +-
init/main.c | 6 +-
kernel/panic.c | 4 +-
kernel/sched/idle.c | 2 +-
scripts/objdump-func | 34 +-
scripts/sorttable.h | 2 +-
tools/arch/x86/include/asm/orc_types.h | 12 +-
tools/include/linux/objtool.h | 200 ----------
tools/include/linux/objtool_types.h | 57 +++
tools/objtool/check.c | 477 ++++++++++++------------
tools/objtool/elf.c | 2 +-
tools/objtool/include/objtool/check.h | 4 +-
tools/objtool/include/objtool/elf.h | 9 +
tools/objtool/include/objtool/warn.h | 5 +
tools/objtool/orc_dump.c | 15 +-
tools/objtool/orc_gen.c | 48 ++-
tools/objtool/sync-check.sh | 2 +-
86 files changed, 644 insertions(+), 686 deletions(-)
create mode 100644 include/linux/objtool_types.h
delete mode 100644 tools/include/linux/objtool.h
create mode 100644 tools/include/linux/objtool_types.h
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