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From: David Laight <David.Laight@ACULAB.COM>
To: 'Sami Tolvanen' <samitolvanen@google.com>,
	Ard Biesheuvel <ardb@kernel.org>
Cc: Will Deacon <will@kernel.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	James Morse <james.morse@arm.com>,
	Steven Rostedt <rostedt@goodmis.org>,
	"Ard Biesheuvel" <ard.biesheuvel@linaro.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Masahiro Yamada <masahiroy@kernel.org>,
	Michal Marek <michal.lkml@markovi.net>,
	Ingo Molnar <mingo@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Juri Lelli <juri.lelli@redhat.com>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	Kees Cook <keescook@chromium.org>, Jann Horn <jannh@google.com>,
	Marc Zyngier <maz@kernel.org>,
	"kernel-hardening@lists.openwall.com"
	<kernel-hardening@lists.openwall.com>,
	Nick Desaulniers <ndesaulniers@google.com>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>,
	Masami Hiramatsu <mhiramat@kernel.org>,
	clang-built-linux <clang-built-linux@googlegroups.com>,
	Laura Abbott <labbott@redhat.com>,
	Dave Martin <Dave.Martin@arm.com>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>
Subject: RE: [PATCH v13 00/12] add support for Clang's Shadow Call Stack
Date: Wed, 29 Apr 2020 08:39:33 +0000
Message-ID: <6762b8d0974d49de80c3b398d714b3fb@AcuMS.aculab.com> (raw)
In-Reply-To: <20200427220942.GB80713@google.com>

From: Sami Tolvanen
> Sent: 27 April 2020 23:10
...
> > > Alternatively, I wonder if there is a way we could let the SCS and
> > > ordinary stack share the [bottom of] the vmap'ed region. That would
> > > give rather nasty results if the ordinary stack overflows into the
> > > SCS, but for cases where we really recurse out of control, we could
> > > catch this occurrence on either stack, whichever one occurs first. And
> > > the nastiness -when it does occur- will not corrupt any state beyond
> > > the stack of the current task.
> >
> > Hmm, I guess that would make it quite hard to keep the SCS address
> > secret though :-(
> 
> Yes, and the stack potentially overflowing into the SCS sort of defeats
> the purpose. I'm fine with increasing the SCS size to something safer,
> but using a vmapped shadow stack seems like the correct solution to this
> problem, at least on devices where allocating a full page isn't an issue.

Wouldn't you do it the other way around - so shadow stack overflow
corrupts the bottom of the normal stack?
That can be detected 'after the fact' in a few places (eg process
switch and return to user)

Actually you might want to do syscall entry at the base of stack area,
then (effectively) allocate an on-stack buffer for the shadow stack.

I'd have though that kernel code could be the shadow stack address
by just reading r18?
Userspace isn't supposed to be able to get the main kernel stack
address either.

	David

-
Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)


  reply index

Thread overview: 431+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-18 16:10 [PATCH 00/18] " 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
2019-10-28 15:31         ` Miguel Ojeda
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
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 [this message]
2020-05-15 17:23   ` Will Deacon

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