From: Will Deacon <will@kernel.org> To: Kees Cook <keescook@chromium.org> Cc: Sami Tolvanen <samitolvanen@google.com>, 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>, Dave Martin <Dave.Martin@arm.com>, Laura Abbott <labbott@redhat.com>, Marc Zyngier <maz@kernel.org>, Masami Hiramatsu <mhiramat@kernel.org>, Nick Desaulniers <ndesaulniers@google.com>, Jann Horn <jannh@google.com>, Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>, clang-built-linux@googlegroups.com, kernel-hardening@lists.openwall.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v12 01/12] add support for Clang's Shadow Call Stack (SCS) Date: Fri, 24 Apr 2020 11:12:31 +0100 Message-ID: <20200424101230.GB21141@willie-the-truck> (raw) In-Reply-To: <202004231108.1AC704F609@keescook> On Thu, Apr 23, 2020 at 11:09:24AM -0700, Kees Cook wrote: > On Wed, Apr 22, 2020 at 07:00:40PM +0100, Will Deacon wrote: > > On Wed, Apr 22, 2020 at 10:54:45AM -0700, Kees Cook wrote: > > > On Mon, Apr 20, 2020 at 07:14:42PM -0700, Sami Tolvanen wrote: > > > > +void scs_release(struct task_struct *tsk) > > > > +{ > > > > + void *s; > > > > + > > > > + s = __scs_base(tsk); > > > > + if (!s) > > > > + return; > > > > + > > > > + WARN_ON(scs_corrupted(tsk)); > > > > + > > > > > > I'd like to have task_set_scs(tsk, NULL) retained here, to avoid need to > > > depend on the released task memory getting scrubbed at a later time. > > > > Hmm, doesn't it get zeroed almost immediately by kmem_cache_free() if > > INIT_ON_FREE_DEFAULT_ON is set? That seems much better than special-casing > > SCS, as there's a tonne of other useful stuff kicking around in the > > task_struct and treating this specially feels odd to me. > > That's going to be an uncommon config except for the most paranoid of > system builders. :) Sounds like a perfect fit, then ;) > Having this get wiped particular thing wiped is just > a decent best practice for what is otherwise treated as a "secret", just > like crypto routines wipe their secrets before free(). Sorry, but I don't buy that analogy. The SCS pointer is stored in memory all over the place and if it needs to treated in the same way as crypto secrets then this whole thing needs rethinking. On top of that, where crypto routines may wipe their secrets, we don't do what is being proposed for the SCS pointer to other similar pieces of data, such as pointer authentication keys. Will
next prev parent reply index Thread overview: 431+ 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 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 [this message] 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
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