Linux-ARM-Kernel Archive on lore.kernel.org
 help / color / Atom feed
From: Will Deacon <will@kernel.org>
To: Sami Tolvanen <samitolvanen@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
	Juri Lelli <juri.lelli@redhat.com>,
	kernel-hardening@lists.openwall.com,
	Peter Zijlstra <peterz@infradead.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Marc Zyngier <maz@kernel.org>,
	Masahiro Yamada <masahiroy@kernel.org>,
	clang-built-linux@googlegroups.com,
	Ingo Molnar <mingo@redhat.com>, Laura Abbott <labbott@redhat.com>,
	Dave Martin <Dave.Martin@arm.com>,
	Kees Cook <keescook@chromium.org>, Jann Horn <jannh@google.com>,
	Steven Rostedt <rostedt@goodmis.org>,
	linux-arm-kernel@lists.infradead.org,
	Michal Marek <michal.lkml@markovi.net>,
	Ard Biesheuvel <ard.biesheuvel@linaro.org>,
	Nick Desaulniers <ndesaulniers@google.com>,
	linux-kernel@vger.kernel.org,
	Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>,
	James Morse <james.morse@arm.com>,
	Masami Hiramatsu <mhiramat@kernel.org>
Subject: Re: [PATCH v11 01/12] add support for Clang's Shadow Call Stack (SCS)
Date: Mon, 20 Apr 2020 18:17:28 +0100
Message-ID: <20200420171727.GB24386@willie-the-truck> (raw)
In-Reply-To: <20200416161245.148813-2-samitolvanen@google.com>

Hi Sami,

Comments inline.

On Thu, Apr 16, 2020 at 09:12:34AM -0700, Sami Tolvanen wrote:
> This change adds generic support for Clang's Shadow Call Stack,
> which uses a shadow stack to protect return addresses from being
> overwritten by an attacker. Details are available here:
> 
>   https://clang.llvm.org/docs/ShadowCallStack.html
> 
> Note that security guarantees in the kernel differ from the
> ones documented for user space. The kernel must store addresses
> of shadow stacks used by other tasks and interrupt handlers in
> memory, which means an attacker capable reading and writing
> arbitrary memory may be able to locate them and hijack control
> flow by modifying shadow stacks that are not currently in use.
> 
> Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
> Reviewed-by: Kees Cook <keescook@chromium.org>
> Reviewed-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
> ---
>  Makefile                       |   6 ++
>  arch/Kconfig                   |  34 ++++++
>  include/linux/compiler-clang.h |   6 ++
>  include/linux/compiler_types.h |   4 +
>  include/linux/scs.h            |  57 ++++++++++
>  init/init_task.c               |   8 ++
>  kernel/Makefile                |   1 +
>  kernel/fork.c                  |   9 ++
>  kernel/sched/core.c            |   2 +
>  kernel/scs.c                   | 187 +++++++++++++++++++++++++++++++++
>  10 files changed, 314 insertions(+)
>  create mode 100644 include/linux/scs.h
>  create mode 100644 kernel/scs.c
> 
> diff --git a/Makefile b/Makefile
> index 70def4907036..baea6024b409 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -866,6 +866,12 @@ ifdef CONFIG_LIVEPATCH
>  KBUILD_CFLAGS += $(call cc-option, -flive-patching=inline-clone)
>  endif
>  
> +ifdef CONFIG_SHADOW_CALL_STACK
> +CC_FLAGS_SCS	:= -fsanitize=shadow-call-stack
> +KBUILD_CFLAGS	+= $(CC_FLAGS_SCS)
> +export CC_FLAGS_SCS
> +endif

CFLAGS_SCS would seem more natural to me, although I see ftrace does it this
way.

>  # arch Makefile may override CC so keep this after arch Makefile is included
>  NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
>  
> diff --git a/arch/Kconfig b/arch/Kconfig
> index 786a85d4ad40..691a552c2cc3 100644
> --- a/arch/Kconfig
> +++ b/arch/Kconfig
> @@ -533,6 +533,40 @@ config STACKPROTECTOR_STRONG
>  	  about 20% of all kernel functions, which increases the kernel code
>  	  size by about 2%.
>  
> +config ARCH_SUPPORTS_SHADOW_CALL_STACK
> +	bool
> +	help
> +	  An architecture should select this if it supports Clang's Shadow
> +	  Call Stack, has asm/scs.h, and implements runtime support for shadow
> +	  stack switching.
> +
> +config SHADOW_CALL_STACK
> +	bool "Clang Shadow Call Stack"
> +	depends on ARCH_SUPPORTS_SHADOW_CALL_STACK
> +	help
> +	  This option enables Clang's Shadow Call Stack, which uses a
> +	  shadow stack to protect function return addresses from being
> +	  overwritten by an attacker. More information can be found in
> +	  Clang's documentation:
> +
> +	    https://clang.llvm.org/docs/ShadowCallStack.html
> +
> +	  Note that security guarantees in the kernel differ from the ones
> +	  documented for user space. The kernel must store addresses of shadow
> +	  stacks used by other tasks and interrupt handlers in memory, which
> +	  means an attacker capable of reading and writing arbitrary memory
> +	  may be able to locate them and hijack control flow by modifying
> +	  shadow stacks that are not currently in use.

Shouldn't some of this depend on CC_IS_CLANG?

> +config SHADOW_CALL_STACK_VMAP
> +	bool "Use virtually mapped shadow call stacks"
> +	depends on SHADOW_CALL_STACK
> +	help
> +	  Use virtually mapped shadow call stacks. Selecting this option
> +	  provides better stack exhaustion protection, but increases per-thread
> +	  memory consumption as a full page is allocated for each shadow stack.

Given that this feature applies only to arm64 kernels built with clang, it
feels weird to further segment that userbase with another config option.
Does Android enable SHADOW_CALL_STACK_VMAP? If not, maybe we should ditch
it for now and add it when we have a user.

> diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h
> index e970f97a7fcb..97b62f47a80d 100644
> --- a/include/linux/compiler_types.h
> +++ b/include/linux/compiler_types.h
> @@ -193,6 +193,10 @@ struct ftrace_likely_data {
>  # define randomized_struct_fields_end
>  #endif
>  
> +#ifndef __noscs
> +# define __noscs
> +#endif
> +
>  #ifndef asm_volatile_goto
>  #define asm_volatile_goto(x...) asm goto(x)
>  #endif
> diff --git a/include/linux/scs.h b/include/linux/scs.h
> new file mode 100644
> index 000000000000..c5572fd770b0
> --- /dev/null
> +++ b/include/linux/scs.h
> @@ -0,0 +1,57 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Shadow Call Stack support.
> + *
> + * Copyright (C) 2019 Google LLC
> + */
> +
> +#ifndef _LINUX_SCS_H
> +#define _LINUX_SCS_H
> +
> +#include <linux/gfp.h>
> +#include <linux/sched.h>
> +#include <asm/page.h>
> +
> +#ifdef CONFIG_SHADOW_CALL_STACK
> +
> +/*
> + * In testing, 1 KiB shadow stack size (i.e. 128 stack frames on a 64-bit
> + * architecture) provided ~40% safety margin on stack usage while keeping
> + * memory allocation overhead reasonable.
> + */
> +#define SCS_SIZE	1024UL
> +#define GFP_SCS		(GFP_KERNEL | __GFP_ZERO)
> +
> +/*
> + * A random number outside the kernel's virtual address space to mark the
> + * end of the shadow stack.
> + */
> +#define SCS_END_MAGIC	0xaf0194819b1635f6UL

This seems like it might be arm64-specific. Why not choose something based
off CONFIG_ILLEGAL_POINTER_VALUE (see linux/poison.h)?

> diff --git a/kernel/sched/core.c b/kernel/sched/core.c
> index 3a61a3b8eaa9..c99620c1ec20 100644
> --- a/kernel/sched/core.c
> +++ b/kernel/sched/core.c
> @@ -11,6 +11,7 @@
>  #include <linux/nospec.h>
>  
>  #include <linux/kcov.h>
> +#include <linux/scs.h>
>  
>  #include <asm/switch_to.h>
>  #include <asm/tlb.h>
> @@ -6045,6 +6046,7 @@ void init_idle(struct task_struct *idle, int cpu)
>  	idle->se.exec_start = sched_clock();
>  	idle->flags |= PF_IDLE;
>  
> +	scs_task_reset(idle);
>  	kasan_unpoison_task_stack(idle);
>  
>  #ifdef CONFIG_SMP
> diff --git a/kernel/scs.c b/kernel/scs.c
> new file mode 100644
> index 000000000000..28abed21950c
> --- /dev/null
> +++ b/kernel/scs.c
> @@ -0,0 +1,187 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Shadow Call Stack support.
> + *
> + * Copyright (C) 2019 Google LLC
> + */
> +
> +#include <linux/cpuhotplug.h>
> +#include <linux/kasan.h>
> +#include <linux/mm.h>
> +#include <linux/mmzone.h>
> +#include <linux/scs.h>
> +#include <linux/slab.h>
> +#include <linux/vmalloc.h>
> +#include <asm/scs.h>
> +
> +static inline void *__scs_base(struct task_struct *tsk)

Please avoid using 'inline' in C files unless there's a good reason not
to let the compiler figure it out.

> +{
> +	/*
> +	 * To minimize risk the of exposure, architectures may clear a

Should be "the risk of exposure".

> +	 * task's thread_info::shadow_call_stack while that task is
> +	 * running, and only save/restore the active shadow call stack
> +	 * pointer when the usual register may be clobbered (e.g. across
> +	 * context switches).
> +	 *
> +	 * The shadow call stack is aligned to SCS_SIZE, and grows
> +	 * upwards, so we can mask out the low bits to extract the base
> +	 * when the task is not running.
> +	 */
> +	return (void *)((unsigned long)task_scs(tsk) & ~(SCS_SIZE - 1));

Could we avoid forcing this alignment it we stored the SCS pointer as a
(base,offset) pair instead? That might be friendlier on the allocations
later on.

> +}
> +
> +static inline unsigned long *scs_magic(void *s)
> +{
> +	return (unsigned long *)(s + SCS_SIZE) - 1;
> +}
> +
> +static inline void scs_set_magic(void *s)
> +{
> +	*scs_magic(s) = SCS_END_MAGIC;

You added task_set_scs() for this sort of thing, so I'm not convinced you
need this extra helper.

> +}
> +
> +#ifdef CONFIG_SHADOW_CALL_STACK_VMAP
> +
> +/* Matches NR_CACHED_STACKS for VMAP_STACK */
> +#define NR_CACHED_SCS 2

Then they should probably both be derived from the same thing?

> +static DEFINE_PER_CPU(void *, scs_cache[NR_CACHED_SCS]);
> +
> +static void *scs_alloc(int node)
> +{
> +	int i;
> +	void *s;
> +
> +	for (i = 0; i < NR_CACHED_SCS; i++) {
> +		s = this_cpu_xchg(scs_cache[i], NULL);

Might be worth a comment about the re-entrancy here.

> +		if (s) {
> +			memset(s, 0, SCS_SIZE);
> +			goto out;
> +		}
> +	}
> +
> +	/*
> +	 * We allocate a full page for the shadow stack, which should be
> +	 * more than we need. Check the assumption nevertheless.
> +	 */
> +	BUILD_BUG_ON(SCS_SIZE > PAGE_SIZE);
> +
> +	s = __vmalloc_node_range(PAGE_SIZE, SCS_SIZE,
> +				 VMALLOC_START, VMALLOC_END,
> +				 GFP_SCS, PAGE_KERNEL, 0,
> +				 node, __builtin_return_address(0));
> +
> +out:
> +	if (s)
> +		scs_set_magic(s);
> +	/* TODO: poison for KASAN, unpoison in scs_free */

We don't usually commit these. What's missing?

> +
> +	return s;
> +}
> +
> +static void scs_free(void *s)
> +{
> +	int i;
> +
> +	for (i = 0; i < NR_CACHED_SCS; i++)
> +		if (this_cpu_cmpxchg(scs_cache[i], 0, s) == NULL)
> +			return;
> +
> +	vfree_atomic(s);
> +}
> +
> +static int scs_cleanup(unsigned int cpu)
> +{
> +	int i;
> +	void **cache = per_cpu_ptr(scs_cache, cpu);
> +
> +	for (i = 0; i < NR_CACHED_SCS; i++) {
> +		vfree(cache[i]);
> +		cache[i] = NULL;
> +	}

Hmm, can this run concurrently with another CPU doing a stack allocation
with this_cpu_cmpxchg()? It probably works out on arm64 thanks to the use
of atomics, but we shouldn't be relying on that in core code.

> +
> +	return 0;
> +}
> +
> +void __init scs_init(void)
> +{
> +	WARN_ON(cpuhp_setup_state(CPUHP_BP_PREPARE_DYN, "scs:scs_cache", NULL,
> +			scs_cleanup) < 0);
> +}
> +
> +#else /* !CONFIG_SHADOW_CALL_STACK_VMAP */
> +
> +static struct kmem_cache *scs_cache;
> +
> +static inline void *scs_alloc(int node)
> +{
> +	void *s;
> +
> +	s = kmem_cache_alloc_node(scs_cache, GFP_SCS, node);
> +	if (s) {
> +		scs_set_magic(s);
> +		/*
> +		 * Poison the allocation to catch unintentional accesses to
> +		 * the shadow stack when KASAN is enabled.
> +		 */
> +		kasan_poison_object_data(scs_cache, s);
> +	}
> +
> +	return s;
> +}
> +
> +static inline void scs_free(void *s)
> +{
> +	kasan_unpoison_object_data(scs_cache, s);
> +	kmem_cache_free(scs_cache, s);
> +}
> +
> +void __init scs_init(void)
> +{
> +	scs_cache = kmem_cache_create("scs_cache", SCS_SIZE, SCS_SIZE,
> +				0, NULL);
> +	WARN_ON(!scs_cache);

Memory allocation failure should be noisy enough without this.

> +}
> +
> +#endif /* CONFIG_SHADOW_CALL_STACK_VMAP */
> +
> +void scs_task_reset(struct task_struct *tsk)
> +{
> +	/*
> +	 * Reset the shadow stack to the base address in case the task
> +	 * is reused.
> +	 */
> +	task_set_scs(tsk, __scs_base(tsk));
> +}

Why isn't this in the header?

> +
> +int scs_prepare(struct task_struct *tsk, int node)
> +{
> +	void *s;
> +
> +	s = scs_alloc(node);
> +	if (!s)
> +		return -ENOMEM;
> +
> +	task_set_scs(tsk, s);
> +	return 0;
> +}
> +
> +bool scs_corrupted(struct task_struct *tsk)
> +{
> +	unsigned long *magic = scs_magic(__scs_base(tsk));
> +
> +	return READ_ONCE_NOCHECK(*magic) != SCS_END_MAGIC;
> +}

Same here.

> +
> +void scs_release(struct task_struct *tsk)
> +{
> +	void *s;
> +
> +	s = __scs_base(tsk);
> +	if (!s)
> +		return;
> +
> +	WARN_ON(scs_corrupted(tsk));
> +
> +	task_set_scs(tsk, NULL);

Aren't we about to free the task here? What does clearing the scs pointer
achieve?

Will

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply index

Thread overview: 430+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-18 16:10 [PATCH 00/18] add support for Clang's Shadow Call Stack Sami Tolvanen
2019-10-18 16:10 ` [PATCH 01/18] arm64: mm: don't use x18 in idmap_kpti_install_ng_mappings Sami Tolvanen
2019-10-18 16:43   ` Nick Desaulniers
2019-10-18 16:10 ` [PATCH 02/18] arm64/lib: copy_page: avoid x18 register in assembler code Sami Tolvanen
2019-10-18 16:10 ` [PATCH 03/18] arm64: kvm: stop treating register x18 as caller save Sami Tolvanen
2019-10-21  6:19   ` Ard Biesheuvel
2019-10-22 17:22   ` Marc Zyngier
2019-10-22 21:45     ` Sami Tolvanen
2019-10-18 16:10 ` [PATCH 04/18] arm64: kernel: avoid x18 as an arbitrary temp register Sami Tolvanen
2019-10-18 16:10 ` [PATCH 05/18] arm64: kbuild: reserve reg x18 from general allocation by the compiler Sami Tolvanen
2019-10-18 17:32   ` Nick Desaulniers
2019-10-18 19:00     ` Sami Tolvanen
2019-10-21  6:12       ` Ard Biesheuvel
2019-10-21 20:43         ` Sami Tolvanen
2019-10-18 16:10 ` [PATCH 06/18] add support for Clang's Shadow Call Stack (SCS) Sami Tolvanen
2019-10-18 16:58   ` Joe Perches
2019-10-18 17:08   ` Nick Desaulniers
2019-10-18 17:11     ` Sami Tolvanen
2019-10-18 18:32       ` Miguel Ojeda
2019-10-18 20:33         ` Nick Desaulniers
2019-10-19  0:21           ` Miguel Ojeda
2019-10-18 17:42   ` Jann Horn
2019-10-18 17:56     ` Sami Tolvanen
2019-10-22 16:28   ` Mark Rutland
2019-10-22 16:30     ` Kees Cook
2019-10-22 16:49       ` Mark Rutland
2019-10-22 19:26     ` Sami Tolvanen
2019-10-24 13:28       ` Mark Rutland
2019-10-24 14:38         ` Masahiro Yamada
2019-10-23 16:59     ` Sami Tolvanen
2019-10-24  1:47       ` Masahiro Yamada
2019-10-24 12:04       ` Steven Rostedt
2019-10-24 22:17         ` Sami Tolvanen
2019-10-18 16:10 ` [PATCH 07/18] scs: add accounting Sami Tolvanen
2019-10-18 16:10 ` [PATCH 08/18] scs: add support for stack usage debugging Sami Tolvanen
2019-10-18 16:10 ` [PATCH 09/18] trace: disable function graph tracing with SCS Sami Tolvanen
2019-10-18 17:01   ` Steven Rostedt
2019-10-18 17:08     ` Sami Tolvanen
2019-10-21  6:15   ` Ard Biesheuvel
2019-10-18 16:10 ` [PATCH 10/18] kprobes: fix compilation without CONFIG_KRETPROBES Sami Tolvanen
2019-10-18 17:02   ` Steven Rostedt
2019-10-21  9:13     ` Masami Hiramatsu
2019-10-18 16:10 ` [PATCH 11/18] kprobes: disable kretprobes with SCS Sami Tolvanen
2019-10-18 17:04   ` Steven Rostedt
2019-10-21  9:15     ` Masami Hiramatsu
2019-10-18 16:10 ` [PATCH 12/18] arm64: reserve x18 only with Shadow Call Stack Sami Tolvanen
2019-10-18 21:23   ` Nick Desaulniers
2019-10-22 16:00     ` Mark Rutland
2019-10-22 16:27       ` Kees Cook
2019-10-18 16:10 ` [PATCH 13/18] arm64: preserve x18 when CPU is suspended Sami Tolvanen
2019-10-18 16:49   ` Nick Desaulniers
2019-10-18 17:05     ` Sami Tolvanen
2019-10-21 16:56   ` Mark Rutland
2019-10-21 22:43     ` Sami Tolvanen
2019-10-22 15:47       ` Mark Rutland
2019-10-18 16:10 ` [PATCH 14/18] arm64: efi: restore x18 if it was corrupted Sami Tolvanen
2019-10-21  6:20   ` Ard Biesheuvel
2019-10-21 22:39     ` Sami Tolvanen
2019-10-22  5:54       ` Ard Biesheuvel
2019-10-18 16:10 ` [PATCH 15/18] arm64: vdso: disable Shadow Call Stack Sami Tolvanen
2019-10-18 16:10 ` [PATCH 16/18] arm64: kprobes: fix kprobes without CONFIG_KRETPROBES Sami Tolvanen
2019-10-21  6:21   ` Ard Biesheuvel
2019-10-21 16:06     ` Kees Cook
2019-10-18 16:10 ` [PATCH 17/18] arm64: disable SCS for hypervisor code Sami Tolvanen
2019-10-18 16:10 ` [PATCH 18/18] arm64: implement Shadow Call Stack Sami Tolvanen
2019-10-18 17:12   ` Jann Horn
2019-10-18 17:18     ` Sami Tolvanen
2019-10-18 17:23     ` Mark Rutland
2019-10-18 17:35       ` Sami Tolvanen
2019-10-21 16:49         ` Mark Rutland
2019-10-21  9:28 ` [PATCH 00/18] add support for Clang's " Masami Hiramatsu
2019-10-24 22:51 ` [PATCH v2 00/17] " samitolvanen
2019-10-24 22:51   ` [PATCH v2 01/17] arm64: mm: don't use x18 in idmap_kpti_install_ng_mappings samitolvanen
2019-10-25  9:24     ` Mark Rutland
2019-10-24 22:51   ` [PATCH v2 02/17] arm64/lib: copy_page: avoid x18 register in assembler code samitolvanen
2019-10-25  9:41     ` Mark Rutland
2019-10-25 21:40       ` Sami Tolvanen
2019-10-24 22:51   ` [PATCH v2 03/17] arm64: kvm: stop treating register x18 as caller save samitolvanen
2019-10-24 22:51   ` [PATCH v2 04/17] arm64: kernel: avoid x18 as an arbitrary temp register samitolvanen
2019-10-25 10:02     ` Mark Rutland
2019-10-24 22:51   ` [PATCH v2 05/17] add support for Clang's Shadow Call Stack (SCS) samitolvanen
2019-10-25 10:56     ` Mark Rutland
2019-10-25 20:49       ` Sami Tolvanen
2019-10-28 16:35         ` Mark Rutland
2019-10-28 19:57           ` Kees Cook
2019-10-29 18:06             ` Sami Tolvanen
2019-10-25 16:22     ` Nick Desaulniers
2019-10-25 20:51       ` Sami Tolvanen
2019-10-26 15:57     ` Joe Perches
2019-10-28 15:19       ` Sami Tolvanen
     [not found]         ` <CANiq72n4o16TB53s6nLLrLCw6v0Brn8GAhKvdzzN7v1tNontCQ@mail.gmail.com>
2019-10-28 16:15           ` Sami Tolvanen
2019-10-24 22:51   ` [PATCH v2 06/17] scs: add accounting samitolvanen
2019-10-24 22:51   ` [PATCH v2 07/17] scs: add support for stack usage debugging samitolvanen
2019-10-24 22:51   ` [PATCH v2 08/17] kprobes: fix compilation without CONFIG_KRETPROBES samitolvanen
2019-10-24 22:51   ` [PATCH v2 09/17] arm64: disable function graph tracing with SCS samitolvanen
2019-10-25 11:03     ` Mark Rutland
2019-10-29 17:45       ` Sami Tolvanen
2019-10-29 20:35         ` Nick Desaulniers
2019-10-24 22:51   ` [PATCH v2 10/17] arm64: disable kretprobes " samitolvanen
2019-10-24 22:51   ` [PATCH v2 11/17] arm64: reserve x18 from general allocation " samitolvanen
2019-10-24 22:51   ` [PATCH v2 12/17] arm64: preserve x18 when CPU is suspended samitolvanen
2019-10-24 22:51   ` [PATCH v2 13/17] arm64: efi: restore x18 if it was corrupted samitolvanen
2019-10-24 22:51   ` [PATCH v2 14/17] arm64: vdso: disable Shadow Call Stack samitolvanen
2019-10-24 22:51   ` [PATCH v2 15/17] arm64: kprobes: fix kprobes without CONFIG_KRETPROBES samitolvanen
2019-10-24 22:51   ` [PATCH v2 16/17] arm64: disable SCS for hypervisor code samitolvanen
2019-10-25  1:20     ` Steven Rostedt
2019-10-25  1:29     ` Masahiro Yamada
2019-10-25  1:42       ` Steven Rostedt
2019-10-25 19:24       ` Sami Tolvanen
2019-10-24 22:51   ` [PATCH v2 17/17] arm64: implement Shadow Call Stack samitolvanen
2019-10-31 16:46 ` [PATCH v3 00/17] add support for Clang's " samitolvanen
2019-10-31 16:46   ` [PATCH v3 01/17] arm64: mm: avoid x18 in idmap_kpti_install_ng_mappings samitolvanen
2019-10-31 16:46   ` [PATCH v3 02/17] arm64/lib: copy_page: avoid x18 register in assembler code samitolvanen
2019-10-31 16:46   ` [PATCH v3 03/17] arm64: kvm: stop treating register x18 as caller save samitolvanen
2019-11-01  3:48     ` Kees Cook
2019-10-31 16:46   ` [PATCH v3 04/17] arm64: kernel: avoid x18 __cpu_soft_restart samitolvanen
2019-11-01  3:47     ` Kees Cook
2019-10-31 16:46   ` [PATCH v3 05/17] add support for Clang's Shadow Call Stack (SCS) samitolvanen
2019-11-01  3:51     ` Kees Cook
2019-11-01 16:28       ` Sami Tolvanen
2019-10-31 16:46   ` [PATCH v3 06/17] scs: add accounting samitolvanen
2019-11-01  3:52     ` Kees Cook
2019-10-31 16:46   ` [PATCH v3 07/17] scs: add support for stack usage debugging samitolvanen
2019-11-01  3:55     ` Kees Cook
2019-11-01 16:32       ` Sami Tolvanen
2019-11-01 19:02         ` Kees Cook
2019-10-31 16:46   ` [PATCH v3 08/17] kprobes: fix compilation without CONFIG_KRETPROBES samitolvanen
2019-11-01  3:55     ` Kees Cook
2019-10-31 16:46   ` [PATCH v3 09/17] arm64: kprobes: fix kprobes " samitolvanen
2019-11-01  3:56     ` Kees Cook
2019-10-31 16:46   ` [PATCH v3 10/17] arm64: disable kretprobes with SCS samitolvanen
2019-11-01  3:56     ` Kees Cook
2019-10-31 16:46   ` [PATCH v3 11/17] arm64: disable function graph tracing " samitolvanen
2019-11-01  3:58     ` Kees Cook
2019-11-01 20:32       ` Sami Tolvanen
2019-10-31 16:46   ` [PATCH v3 12/17] arm64: reserve x18 from general allocation " samitolvanen
2019-10-31 17:11     ` Nick Desaulniers
2019-11-01  3:59     ` Kees Cook
2019-10-31 16:46   ` [PATCH v3 13/17] arm64: preserve x18 when CPU is suspended samitolvanen
2019-10-31 17:18     ` Nick Desaulniers
2019-10-31 17:27       ` Sami Tolvanen
2019-10-31 17:34         ` Nick Desaulniers
2019-10-31 17:42           ` Sami Tolvanen
2019-11-01  3:59           ` Kees Cook
2019-10-31 16:46   ` [PATCH v3 14/17] arm64: efi: restore x18 if it was corrupted samitolvanen
2019-11-01  4:00     ` Kees Cook
2019-10-31 16:46   ` [PATCH v3 15/17] arm64: vdso: disable Shadow Call Stack samitolvanen
2019-10-31 17:28     ` Nick Desaulniers
2019-11-01  4:01     ` Kees Cook
2019-10-31 16:46   ` [PATCH v3 16/17] arm64: disable SCS for hypervisor code samitolvanen
2019-11-01  3:46     ` Kees Cook
2019-11-01  4:02     ` Kees Cook
2019-10-31 16:46   ` [PATCH v3 17/17] arm64: implement Shadow Call Stack samitolvanen
2019-11-01  3:45     ` Kees Cook
2019-11-01 15:44       ` Sami Tolvanen
2019-11-01 22:11 ` [PATCH v4 00/17] add support for Clang's " Sami Tolvanen
2019-11-01 22:11   ` [PATCH v4 01/17] arm64: mm: avoid x18 in idmap_kpti_install_ng_mappings Sami Tolvanen
2019-11-01 22:11   ` [PATCH v4 02/17] arm64/lib: copy_page: avoid x18 register in assembler code Sami Tolvanen
2019-11-01 22:11   ` [PATCH v4 03/17] arm64: kvm: stop treating register x18 as caller save Sami Tolvanen
2019-11-04 11:04     ` Marc Zyngier
2019-11-04 13:30       ` Marc Zyngier
2019-11-04 11:51     ` Mark Rutland
2019-11-04 21:44       ` Sami Tolvanen
2019-11-01 22:11   ` [PATCH v4 04/17] arm64: kernel: avoid x18 __cpu_soft_restart Sami Tolvanen
2019-11-04 11:39     ` Mark Rutland
2019-11-04 16:44       ` Sami Tolvanen
2019-11-01 22:11   ` [PATCH v4 05/17] add support for Clang's Shadow Call Stack (SCS) Sami Tolvanen
2019-11-01 22:36     ` Miguel Ojeda
2019-11-04 12:31     ` Mark Rutland
2019-11-04 18:25       ` Sami Tolvanen
2019-11-01 22:11   ` [PATCH v4 06/17] scs: add accounting Sami Tolvanen
2019-11-04 13:13     ` Marc Zyngier
2019-11-04 16:42       ` Sami Tolvanen
2019-11-04 16:59         ` Marc Zyngier
2019-11-01 22:11   ` [PATCH v4 07/17] scs: add support for stack usage debugging Sami Tolvanen
2019-11-02 17:31     ` Kees Cook
2019-11-04 12:40     ` Mark Rutland
2019-11-04 21:35       ` Sami Tolvanen
2019-11-05  9:17         ` Mark Rutland
2019-11-01 22:11   ` [PATCH v4 08/17] kprobes: fix compilation without CONFIG_KRETPROBES Sami Tolvanen
2019-11-13 20:27     ` Steven Rostedt
2019-11-01 22:11   ` [PATCH v4 09/17] arm64: kprobes: fix kprobes " Sami Tolvanen
2019-11-01 22:11   ` [PATCH v4 10/17] arm64: disable kretprobes with SCS Sami Tolvanen
2019-11-04 17:04     ` Mark Rutland
2019-11-04 23:42       ` Sami Tolvanen
2019-11-05  9:04         ` Mark Rutland
2019-11-01 22:11   ` [PATCH v4 11/17] arm64: disable function graph tracing " Sami Tolvanen
2019-11-04 17:11     ` Mark Rutland
2019-11-04 23:44       ` Sami Tolvanen
2019-11-05  9:15         ` Mark Rutland
2019-11-05 20:00           ` Nick Desaulniers
2019-11-05 22:05           ` Sami Tolvanen
2019-11-01 22:11   ` [PATCH v4 12/17] arm64: reserve x18 from general allocation " Sami Tolvanen
2019-11-01 22:11   ` [PATCH v4 13/17] arm64: preserve x18 when CPU is suspended Sami Tolvanen
2019-11-04 13:20     ` Marc Zyngier
2019-11-04 21:38       ` Sami Tolvanen
2019-11-04 21:59         ` Nick Desaulniers
2019-11-05  0:02           ` Sami Tolvanen
2019-11-05 14:55             ` Marc Zyngier
2019-11-01 22:11   ` [PATCH v4 14/17] arm64: efi: restore x18 if it was corrupted Sami Tolvanen
2019-11-01 22:11   ` [PATCH v4 15/17] arm64: vdso: disable Shadow Call Stack Sami Tolvanen
2019-11-01 22:11   ` [PATCH v4 16/17] arm64: disable SCS for hypervisor code Sami Tolvanen
2019-11-01 22:11   ` [PATCH v4 17/17] arm64: implement Shadow Call Stack Sami Tolvanen
2019-11-05 23:55 ` [PATCH v5 00/14] add support for Clang's " Sami Tolvanen
2019-11-05 23:55   ` [PATCH v5 01/14] arm64: mm: avoid x18 in idmap_kpti_install_ng_mappings Sami Tolvanen
2019-11-05 23:55   ` [PATCH v5 02/14] arm64/lib: copy_page: avoid x18 register in assembler code Sami Tolvanen
2019-11-05 23:55   ` [PATCH v5 03/14] arm64: kvm: stop treating register x18 as caller save Sami Tolvanen
2019-11-05 23:55   ` [PATCH v5 04/14] arm64: kernel: avoid x18 in __cpu_soft_restart Sami Tolvanen
2019-11-05 23:55   ` [PATCH v5 05/14] add support for Clang's Shadow Call Stack (SCS) Sami Tolvanen
2019-11-15 15:37     ` Mark Rutland
2019-11-15 18:34       ` Sami Tolvanen
2019-11-05 23:56   ` [PATCH v5 06/14] scs: add accounting Sami Tolvanen
2019-11-05 23:56   ` [PATCH v5 07/14] scs: add support for stack usage debugging Sami Tolvanen
2019-11-05 23:56   ` [PATCH v5 08/14] arm64: disable function graph tracing with SCS Sami Tolvanen
2019-11-15 14:18     ` Mark Rutland
2019-11-05 23:56   ` [PATCH v5 09/14] arm64: reserve x18 from general allocation " Sami Tolvanen
2019-11-05 23:56   ` [PATCH v5 10/14] arm64: preserve x18 when CPU is suspended Sami Tolvanen
2019-11-06 20:39     ` Nick Desaulniers
2019-11-15 14:27     ` Mark Rutland
2019-11-05 23:56   ` [PATCH v5 11/14] arm64: efi: restore x18 if it was corrupted Sami Tolvanen
2019-11-06  4:45     ` Miguel Ojeda
2019-11-07 10:51       ` Ard Biesheuvel
2019-11-07 16:26         ` Sami Tolvanen
2019-11-05 23:56   ` [PATCH v5 12/14] arm64: vdso: disable Shadow Call Stack Sami Tolvanen
2019-11-15 14:43     ` Mark Rutland
2019-11-05 23:56   ` [PATCH v5 13/14] arm64: disable SCS for hypervisor code Sami Tolvanen
2019-11-15 14:46     ` Mark Rutland
2019-11-05 23:56   ` [PATCH v5 14/14] arm64: implement Shadow Call Stack Sami Tolvanen
2019-11-15 15:20     ` Mark Rutland
2019-11-15 20:19       ` Sami Tolvanen
2019-11-18 23:13         ` Sami Tolvanen
2019-11-12 23:44   ` [PATCH v5 00/14] add support for Clang's " Kees Cook
2019-11-13 12:03     ` Will Deacon
2019-11-13 18:33       ` Kees Cook
2019-11-15 14:16     ` Mark Rutland
2019-12-06 22:13 ` [PATCH v6 00/15] " Sami Tolvanen
2019-12-06 22:13   ` [PATCH v6 01/15] arm64: mm: avoid x18 in idmap_kpti_install_ng_mappings Sami Tolvanen
2019-12-06 22:13   ` [PATCH v6 02/15] arm64/lib: copy_page: avoid x18 register in assembler code Sami Tolvanen
2019-12-06 22:13   ` [PATCH v6 03/15] arm64: kvm: stop treating register x18 as caller save Sami Tolvanen
2019-12-06 22:13   ` [PATCH v6 04/15] arm64: kernel: avoid x18 in __cpu_soft_restart Sami Tolvanen
2019-12-06 22:13   ` [PATCH v6 05/15] add support for Clang's Shadow Call Stack (SCS) Sami Tolvanen
2019-12-06 22:13   ` [PATCH v6 06/15] scs: add accounting Sami Tolvanen
2019-12-06 22:13   ` [PATCH v6 07/15] scs: add support for stack usage debugging Sami Tolvanen
2019-12-06 22:13   ` [PATCH v6 08/15] arm64: disable function graph tracing with SCS Sami Tolvanen
2020-01-16 17:39     ` Will Deacon
2020-01-16 21:45       ` Sami Tolvanen
2019-12-06 22:13   ` [PATCH v6 09/15] arm64: reserve x18 from general allocation " Sami Tolvanen
2020-01-16 17:37     ` Will Deacon
2019-12-06 22:13   ` [PATCH v6 10/15] arm64: preserve x18 when CPU is suspended Sami Tolvanen
2020-01-16 17:42     ` Will Deacon
2019-12-06 22:13   ` [PATCH v6 11/15] arm64: efi: restore x18 if it was corrupted Sami Tolvanen
2020-01-16 17:44     ` Will Deacon
2020-01-16 20:36       ` Sami Tolvanen
2019-12-06 22:13   ` [PATCH v6 12/15] arm64: vdso: disable Shadow Call Stack Sami Tolvanen
2020-01-16 17:46     ` Will Deacon
2020-01-16 18:14       ` Sami Tolvanen
2020-01-16 18:18         ` Will Deacon
2019-12-06 22:13   ` [PATCH v6 13/15] arm64: disable SCS for hypervisor code Sami Tolvanen
2020-01-16 17:47     ` Will Deacon
2020-01-16 20:16       ` Sami Tolvanen
2019-12-06 22:13   ` [PATCH v6 14/15] arm64: implement Shadow Call Stack Sami Tolvanen
2020-01-16 18:24     ` Will Deacon
2020-01-16 21:57       ` Sami Tolvanen
2019-12-06 22:13   ` [PATCH v6 15/15] arm64: scs: add shadow stacks for SDEI Sami Tolvanen
2020-01-16 17:48     ` Will Deacon
2020-01-16 18:24   ` [PATCH v6 00/15] add support for Clang's Shadow Call Stack Will Deacon
2020-01-28 18:49 ` [PATCH v7 00/11] " Sami Tolvanen
2020-01-28 18:49   ` [PATCH v7 01/11] add support for Clang's Shadow Call Stack (SCS) Sami Tolvanen
2020-01-28 18:49   ` [PATCH v7 02/11] scs: add accounting Sami Tolvanen
2020-01-28 18:49   ` [PATCH v7 03/11] scs: add support for stack usage debugging Sami Tolvanen
2020-01-28 18:49   ` [PATCH v7 04/11] scs: disable when function graph tracing is enabled Sami Tolvanen
2020-01-28 22:50     ` Kees Cook
2020-01-28 18:49   ` [PATCH v7 05/11] arm64: reserve x18 from general allocation with SCS Sami Tolvanen
2020-01-28 18:49   ` [PATCH v7 06/11] arm64: preserve x18 when CPU is suspended Sami Tolvanen
2020-01-28 18:49   ` [PATCH v7 07/11] arm64: efi: restore x18 if it was corrupted Sami Tolvanen
2020-02-10 16:41     ` Will Deacon
2020-01-28 18:49   ` [PATCH v7 08/11] arm64: vdso: disable Shadow Call Stack Sami Tolvanen
2020-01-28 18:49   ` [PATCH v7 09/11] arm64: disable SCS for hypervisor code Sami Tolvanen
2020-02-10 16:44     ` Will Deacon
2020-02-10 17:18     ` James Morse
2020-02-10 17:52       ` Will Deacon
2020-02-10 18:03         ` Mark Rutland
2020-02-10 18:07           ` Will Deacon
2020-02-10 18:24             ` Mark Rutland
2020-02-11  9:54               ` Will Deacon
2020-02-12 17:30                 ` Sami Tolvanen
2020-02-11  9:14             ` Marc Zyngier
2020-02-11  9:55               ` Will Deacon
2020-02-11 10:00                 ` Marc Zyngier
2020-01-28 18:49   ` [PATCH v7 10/11] arm64: implement Shadow Call Stack Sami Tolvanen
2020-01-28 18:49   ` [PATCH v7 11/11] arm64: scs: add shadow stacks for SDEI Sami Tolvanen
2020-02-11 13:57     ` James Morse
2020-02-12 20:59       ` Sami Tolvanen
2020-02-14 18:13         ` James Morse
2020-02-11 13:57   ` [PATCH v7 00/11] add support for Clang's Shadow Call Stack James Morse
2020-02-12 17:36     ` Sami Tolvanen
2020-02-19  0:08 ` [PATCH v8 00/12] " Sami Tolvanen
2020-02-19  0:08   ` [PATCH v8 01/12] add support for Clang's Shadow Call Stack (SCS) Sami Tolvanen
2020-02-19  4:19     ` Randy Dunlap
2020-02-19 17:25       ` Sami Tolvanen
2020-02-19  0:08   ` [PATCH v8 02/12] scs: add accounting Sami Tolvanen
2020-02-19  0:08   ` [PATCH v8 03/12] scs: add support for stack usage debugging Sami Tolvanen
2020-02-19  0:08   ` [PATCH v8 04/12] scs: disable when function graph tracing is enabled Sami Tolvanen
2020-02-19 11:33     ` Mark Rutland
2020-02-19 18:01       ` Sami Tolvanen
2020-02-19  0:08   ` [PATCH v8 05/12] arm64: reserve x18 from general allocation with SCS Sami Tolvanen
2020-02-19  0:08   ` [PATCH v8 06/12] arm64: preserve x18 when CPU is suspended Sami Tolvanen
2020-02-19  0:08   ` [PATCH v8 07/12] arm64: efi: restore x18 if it was corrupted Sami Tolvanen
2020-02-19  0:08   ` [PATCH v8 08/12] arm64: vdso: disable Shadow Call Stack Sami Tolvanen
2020-02-19  0:08   ` [PATCH v8 09/12] arm64: disable SCS for hypervisor code Sami Tolvanen
2020-02-19  0:58     ` Kees Cook
2020-02-19  7:50     ` Marc Zyngier
2020-02-19  0:08   ` [PATCH v8 10/12] arm64: implement Shadow Call Stack Sami Tolvanen
2020-02-19  0:08   ` [PATCH v8 11/12] arm64: scs: add shadow stacks for SDEI Sami Tolvanen
2020-02-19  0:08   ` [PATCH v8 12/12] efi/libstub: disable SCS Sami Tolvanen
2020-02-19  0:58     ` Kees Cook
2020-02-19  7:40     ` Ard Biesheuvel
2020-02-19 18:27       ` Sami Tolvanen
2020-02-19 18:38   ` [PATCH v8 00/12] add support for Clang's Shadow Call Stack James Morse
2020-02-19 18:53     ` Ard Biesheuvel
2020-02-20  9:55       ` Marc Zyngier
2020-02-19 20:12     ` Sami Tolvanen
2020-02-25 17:39 ` [PATCH v9 " Sami Tolvanen
2020-02-25 17:39   ` [PATCH v9 01/12] add support for Clang's Shadow Call Stack (SCS) Sami Tolvanen
2020-02-25 17:39   ` [PATCH v9 02/12] scs: add accounting Sami Tolvanen
2020-02-25 17:39   ` [PATCH v9 03/12] scs: add support for stack usage debugging Sami Tolvanen
2020-02-25 17:39   ` [PATCH v9 04/12] scs: disable when function graph tracing is enabled Sami Tolvanen
2020-02-25 17:39   ` [PATCH v9 05/12] arm64: reserve x18 from general allocation with SCS Sami Tolvanen
2020-02-25 17:39   ` [PATCH v9 06/12] arm64: preserve x18 when CPU is suspended Sami Tolvanen
2020-02-25 17:39   ` [PATCH v9 07/12] arm64: efi: restore x18 if it was corrupted Sami Tolvanen
2020-02-25 17:39   ` [PATCH v9 08/12] arm64: vdso: disable Shadow Call Stack Sami Tolvanen
2020-02-25 17:39   ` [PATCH v9 09/12] arm64: disable SCS for hypervisor code Sami Tolvanen
2020-02-25 17:39   ` [PATCH v9 10/12] arm64: implement Shadow Call Stack Sami Tolvanen
2020-02-28 16:31     ` James Morse
2020-02-28 20:51       ` Sami Tolvanen
2020-02-25 17:39   ` [PATCH v9 11/12] arm64: scs: add shadow stacks for SDEI Sami Tolvanen
2020-02-25 17:39   ` [PATCH v9 12/12] efi/libstub: disable SCS Sami Tolvanen
2020-04-06 16:41 ` [PATCH v10 00/12] add support for Clang's Shadow Call Stack Sami Tolvanen
2020-04-06 16:41   ` [PATCH v10 01/12] add support for Clang's Shadow Call Stack (SCS) Sami Tolvanen
2020-04-06 16:41   ` [PATCH v10 02/12] scs: add accounting Sami Tolvanen
2020-04-06 16:41   ` [PATCH v10 03/12] scs: add support for stack usage debugging Sami Tolvanen
2020-04-06 16:41   ` [PATCH v10 04/12] scs: disable when function graph tracing is enabled Sami Tolvanen
2020-04-06 16:41   ` [PATCH v10 05/12] arm64: reserve x18 from general allocation with SCS Sami Tolvanen
2020-04-06 16:41   ` [PATCH v10 06/12] arm64: preserve x18 when CPU is suspended Sami Tolvanen
2020-04-06 16:41   ` [PATCH v10 07/12] arm64: efi: restore x18 if it was corrupted Sami Tolvanen
2020-04-06 16:41   ` [PATCH v10 08/12] arm64: vdso: disable Shadow Call Stack Sami Tolvanen
2020-04-06 16:41   ` [PATCH v10 09/12] arm64: disable SCS for hypervisor code Sami Tolvanen
2020-04-06 18:23     ` Kees Cook
2020-04-06 16:41   ` [PATCH v10 10/12] arm64: implement Shadow Call Stack Sami Tolvanen
2020-04-06 16:41   ` [PATCH v10 11/12] arm64: scs: add shadow stacks for SDEI Sami Tolvanen
2020-04-06 16:41   ` [PATCH v10 12/12] efi/libstub: disable SCS Sami Tolvanen
2020-04-06 18:25     ` Kees Cook
2020-04-07 12:00     ` Ard Biesheuvel
2020-04-16 16:12 ` [PATCH v11 00/12] add support for Clang's Shadow Call Stack Sami Tolvanen
2020-04-16 16:12   ` [PATCH v11 01/12] add support for Clang's Shadow Call Stack (SCS) Sami Tolvanen
2020-04-20 17:17     ` Will Deacon [this message]
2020-04-20 21:18       ` Sami Tolvanen
2020-04-22 17:39         ` Will Deacon
2020-04-22 17:51           ` Kees Cook
2020-04-22 18:01             ` Will Deacon
2020-04-22 23:51           ` Sami Tolvanen
2020-04-23 18:28             ` Kees Cook
2020-04-24 11:21               ` Will Deacon
2020-04-27 20:45                 ` Sami Tolvanen
2020-05-04 16:52                   ` Will Deacon
2020-05-04 17:33                     ` Sami Tolvanen
2020-05-04 18:03                     ` Jann Horn
2020-05-04 18:06                     ` Kees Cook
2020-04-21  1:12       ` Steven Rostedt
2020-04-16 16:12   ` [PATCH v11 02/12] scs: add accounting Sami Tolvanen
2020-04-20 17:17     ` Will Deacon
2020-04-20 21:21       ` Sami Tolvanen
2020-04-16 16:12   ` [PATCH v11 03/12] scs: add support for stack usage debugging Sami Tolvanen
2020-04-20 17:17     ` Will Deacon
2020-04-20 22:24       ` Sami Tolvanen
2020-04-16 16:12   ` [PATCH v11 04/12] scs: disable when function graph tracing is enabled Sami Tolvanen
2020-04-17 10:00     ` Peter Zijlstra
2020-04-17 14:46       ` Mark Rutland
2020-04-17 15:26         ` Peter Zijlstra
2020-04-17 15:46           ` Mark Rutland
2020-04-17 23:19             ` Sami Tolvanen
2020-04-20 19:23             ` Steven Rostedt
2020-04-16 16:12   ` [PATCH v11 05/12] arm64: reserve x18 from general allocation with SCS Sami Tolvanen
2020-04-16 16:12   ` [PATCH v11 06/12] arm64: preserve x18 when CPU is suspended Sami Tolvanen
2020-04-16 16:12   ` [PATCH v11 07/12] arm64: efi: restore x18 if it was corrupted Sami Tolvanen
2020-04-16 16:12   ` [PATCH v11 08/12] arm64: vdso: disable Shadow Call Stack Sami Tolvanen
2020-04-16 16:12   ` [PATCH v11 09/12] arm64: disable SCS for hypervisor code Sami Tolvanen
2020-04-16 16:12   ` [PATCH v11 10/12] arm64: implement Shadow Call Stack Sami Tolvanen
2020-04-16 16:12   ` [PATCH v11 11/12] arm64: scs: add shadow stacks for SDEI Sami Tolvanen
2020-04-16 16:12   ` [PATCH v11 12/12] efi/libstub: disable SCS Sami Tolvanen
2020-04-21  2:14 ` [PATCH v12 00/12] add support for Clang's Shadow Call Stack Sami Tolvanen
2020-04-21  2:14   ` [PATCH v12 01/12] add support for Clang's Shadow Call Stack (SCS) Sami Tolvanen
2020-04-22 17:54     ` Kees Cook
2020-04-22 18:00       ` Will Deacon
2020-04-23 18:09         ` Kees Cook
2020-04-24 10:12           ` Will Deacon
2020-04-21  2:14   ` [PATCH v12 02/12] scs: add accounting Sami Tolvanen
2020-04-22 17:43     ` Will Deacon
2020-04-21  2:14   ` [PATCH v12 03/12] scs: add support for stack usage debugging Sami Tolvanen
2020-04-22 17:46     ` Will Deacon
2020-04-22 23:53       ` Sami Tolvanen
2020-04-21  2:14   ` [PATCH v12 04/12] scs: disable when function graph tracing is enabled Sami Tolvanen
2020-04-21  2:14   ` [PATCH v12 05/12] arm64: reserve x18 from general allocation with SCS Sami Tolvanen
2020-04-21  2:14   ` [PATCH v12 06/12] arm64: preserve x18 when CPU is suspended Sami Tolvanen
2020-04-21  2:14   ` [PATCH v12 07/12] arm64: efi: restore x18 if it was corrupted Sami Tolvanen
2020-04-21  2:14   ` [PATCH v12 08/12] arm64: vdso: disable Shadow Call Stack Sami Tolvanen
2020-04-21  2:14   ` [PATCH v12 09/12] arm64: disable SCS for hypervisor code Sami Tolvanen
2020-04-21  2:14   ` [PATCH v12 10/12] arm64: implement Shadow Call Stack Sami Tolvanen
2020-04-21  2:14   ` [PATCH v12 11/12] arm64: scs: add shadow stacks for SDEI Sami Tolvanen
2020-04-21  2:14   ` [PATCH v12 12/12] efi/libstub: disable SCS Sami Tolvanen
2020-04-27 16:00 ` [PATCH v13 00/12] add support for Clang's Shadow Call Stack Sami Tolvanen
2020-04-27 16:00   ` [PATCH v13 01/12] add support for Clang's Shadow Call Stack (SCS) Sami Tolvanen
2020-04-27 16:48     ` Miguel Ojeda
2020-04-27 17:01       ` Sami Tolvanen
2020-04-27 16:00   ` [PATCH v13 02/12] scs: add accounting Sami Tolvanen
2020-04-27 16:00   ` [PATCH v13 03/12] scs: add support for stack usage debugging Sami Tolvanen
2020-04-27 16:00   ` [PATCH v13 04/12] scs: disable when function graph tracing is enabled Sami Tolvanen
2020-04-27 16:00   ` [PATCH v13 05/12] arm64: reserve x18 from general allocation with SCS Sami Tolvanen
2020-04-27 16:00   ` [PATCH v13 06/12] arm64: preserve x18 when CPU is suspended Sami Tolvanen
2020-04-27 16:00   ` [PATCH v13 07/12] arm64: efi: restore x18 if it was corrupted Sami Tolvanen
2020-04-27 16:00   ` [PATCH v13 08/12] arm64: vdso: disable Shadow Call Stack Sami Tolvanen
2020-04-27 16:00   ` [PATCH v13 09/12] arm64: disable SCS for hypervisor code Sami Tolvanen
2020-04-27 16:00   ` [PATCH v13 10/12] arm64: implement Shadow Call Stack Sami Tolvanen
2020-04-27 16:00   ` [PATCH v13 11/12] arm64: scs: add shadow stacks for SDEI Sami Tolvanen
2020-04-27 16:00   ` [PATCH v13 12/12] efi/libstub: disable SCS Sami Tolvanen
2020-04-27 17:39   ` [PATCH v13 00/12] add support for Clang's Shadow Call Stack Ard Biesheuvel
2020-04-27 20:50     ` Ard Biesheuvel
2020-04-27 22:09       ` Sami Tolvanen
2020-04-29  8:39         ` David Laight
2020-05-15 17:23   ` Will Deacon

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200420171727.GB24386@willie-the-truck \
    --to=will@kernel.org \
    --cc=Dave.Martin@arm.com \
    --cc=ard.biesheuvel@linaro.org \
    --cc=catalin.marinas@arm.com \
    --cc=clang-built-linux@googlegroups.com \
    --cc=james.morse@arm.com \
    --cc=jannh@google.com \
    --cc=juri.lelli@redhat.com \
    --cc=keescook@chromium.org \
    --cc=kernel-hardening@lists.openwall.com \
    --cc=labbott@redhat.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mark.rutland@arm.com \
    --cc=masahiroy@kernel.org \
    --cc=maz@kernel.org \
    --cc=mhiramat@kernel.org \
    --cc=michal.lkml@markovi.net \
    --cc=miguel.ojeda.sandonis@gmail.com \
    --cc=mingo@redhat.com \
    --cc=ndesaulniers@google.com \
    --cc=peterz@infradead.org \
    --cc=rostedt@goodmis.org \
    --cc=samitolvanen@google.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-ARM-Kernel Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-arm-kernel/0 linux-arm-kernel/git/0.git
	git clone --mirror https://lore.kernel.org/linux-arm-kernel/1 linux-arm-kernel/git/1.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-arm-kernel linux-arm-kernel/ https://lore.kernel.org/linux-arm-kernel \
		linux-arm-kernel@lists.infradead.org
	public-inbox-index linux-arm-kernel

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.infradead.lists.linux-arm-kernel


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git