From: Alexander Lobakin <alobakin@pm.me>
To: Sami Tolvanen <samitolvanen@google.com>
Cc: Alexander Lobakin <alobakin@pm.me>,
Kees Cook <keescook@chromium.org>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Sedat Dilek <sedat.dilek@gmail.com>,
Steven Rostedt <rostedt@goodmis.org>,
linux-hardening@vger.kernel.org, linux-kernel@vger.kernel.org,
llvm@lists.linux.dev, x86@kernel.org
Subject: Re: [PATCH v5 00/15] x86: Add support for Clang CFI
Date: Thu, 21 Oct 2021 10:27:10 +0000 [thread overview]
Message-ID: <20211021102033.113197-1-alobakin@pm.me> (raw)
In-Reply-To: <20211013181658.1020262-1-samitolvanen@google.com>
From: Sami Tolvanen <samitolvanen@google.com>
Date: Wed, 13 Oct 2021 11:16:43 -0700
> This series adds support for Clang's Control-Flow Integrity (CFI)
> checking to x86_64. With CFI, the compiler injects a runtime
> check before each indirect function call to ensure the target is
> a valid function with the correct static type. This restricts
> possible call targets and makes it more difficult for an attacker
> to exploit bugs that allow the modification of stored function
> pointers. For more details, see:
>
> https://clang.llvm.org/docs/ControlFlowIntegrity.html
>
> Note that v5 is based on tip/master. The first two patches contain
> objtool support for CFI, the remaining patches change function
> declarations to use opaque types, fix type mismatch issues that
> confuse the compiler, and disable CFI where it can't be used.
>
> You can also pull this series from
>
> https://github.com/samitolvanen/linux.git x86-cfi-v5
[ snip ]
I've been using it since the end of May on my x86_64, so for v5
(with changing retpoline thunks prototypes to opaque):
Reviwed-by: Alexander Lobakin <alobakin@pm.me>
Tested-by: Alexander Lobakin <alobakin@pm.me>
Thanks!
Al
next prev parent reply other threads:[~2021-10-21 10:27 UTC|newest]
Thread overview: 117+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-13 18:16 [PATCH v5 00/15] x86: Add support for Clang CFI Sami Tolvanen
2021-10-13 18:16 ` [PATCH v5 01/15] objtool: Add CONFIG_CFI_CLANG support Sami Tolvanen
2021-10-13 18:59 ` Kees Cook
2021-10-14 0:44 ` Josh Poimboeuf
2021-10-14 10:22 ` Peter Zijlstra
2021-10-14 19:20 ` Sami Tolvanen
2021-10-13 18:16 ` [PATCH v5 02/15] objtool: Add ASM_STACK_FRAME_NON_STANDARD Sami Tolvanen
2021-10-13 18:59 ` Kees Cook
2021-10-13 18:16 ` [PATCH v5 03/15] linkage: Add DECLARE_NOT_CALLED_FROM_C Sami Tolvanen
2021-10-13 19:00 ` Kees Cook
2021-10-15 2:51 ` Andy Lutomirski
2021-10-15 15:35 ` Sami Tolvanen
2021-10-15 15:55 ` Thomas Gleixner
2021-10-15 16:22 ` Andy Lutomirski
2021-10-15 16:47 ` Sami Tolvanen
2021-10-15 17:34 ` Andy Lutomirski
2021-10-15 17:57 ` Thomas Gleixner
2021-10-15 18:42 ` Sami Tolvanen
2021-10-15 19:35 ` Andy Lutomirski
2021-10-15 20:37 ` Sami Tolvanen
2021-10-16 21:12 ` Josh Poimboeuf
2021-10-18 17:08 ` Sami Tolvanen
2021-10-15 22:17 ` Thomas Gleixner
2021-10-16 21:16 ` Josh Poimboeuf
2021-10-13 18:16 ` [PATCH v5 04/15] cfi: Add DEFINE_CFI_IMMEDIATE_RETURN_STUB Sami Tolvanen
2021-10-13 19:02 ` Kees Cook
2021-10-13 18:16 ` [PATCH v5 05/15] tracepoint: Exclude tp_stub_func from CFI checking Sami Tolvanen
2021-10-13 19:03 ` Kees Cook
2021-10-13 19:20 ` Steven Rostedt
2021-10-13 18:16 ` [PATCH v5 06/15] ftrace: Use an opaque type for functions not callable from C Sami Tolvanen
2021-10-13 19:04 ` Kees Cook
2021-10-13 19:20 ` Steven Rostedt
2021-10-13 18:16 ` [PATCH v5 07/15] lkdtm: Disable UNSET_SMEP with CFI Sami Tolvanen
2021-10-13 18:16 ` [PATCH v5 08/15] lkdtm: Use an opaque type for lkdtm_rodata_do_nothing Sami Tolvanen
2021-10-13 18:16 ` [PATCH v5 09/15] x86: Use an opaque type for functions not callable from C Sami Tolvanen
2021-10-14 11:21 ` Borislav Petkov
2021-10-14 16:07 ` Kees Cook
2021-10-14 17:31 ` Borislav Petkov
2021-10-14 18:24 ` Sami Tolvanen
2021-10-14 19:00 ` Nick Desaulniers
2021-10-14 18:47 ` Kees Cook
2021-10-14 18:52 ` Steven Rostedt
2021-10-14 19:06 ` Josh Poimboeuf
2021-10-13 18:16 ` [PATCH v5 10/15] x86/purgatory: Disable CFI Sami Tolvanen
2021-10-13 19:05 ` Kees Cook
2021-10-13 18:16 ` [PATCH v5 11/15] x86, relocs: Ignore __typeid__ relocations Sami Tolvanen
2021-10-13 18:16 ` [PATCH v5 12/15] x86, module: " Sami Tolvanen
2021-10-13 18:55 ` Kees Cook
2021-10-13 18:16 ` [PATCH v5 13/15] x86, cpu: Use LTO for cpu.c with CFI Sami Tolvanen
2021-10-13 18:16 ` [PATCH v5 14/15] x86, kprobes: Fix optprobe_template_func type mismatch Sami Tolvanen
2021-10-13 18:16 ` [PATCH v5 15/15] x86, build: Allow CONFIG_CFI_CLANG to be selected Sami Tolvanen
2021-10-13 18:56 ` Kees Cook
2021-10-13 19:07 ` [PATCH v5 00/15] x86: Add support for Clang CFI Kees Cook
2021-10-19 10:06 ` Alexander Lobakin
2021-10-19 15:40 ` Sami Tolvanen
2021-10-21 10:27 ` Alexander Lobakin [this message]
2021-10-26 20:16 ` Peter Zijlstra
2021-10-27 10:02 ` David Laight
2021-10-27 10:17 ` Peter Zijlstra
2021-10-27 12:05 ` Mark Rutland
2021-10-27 12:22 ` Ard Biesheuvel
2021-10-27 12:48 ` Peter Zijlstra
2021-10-27 13:04 ` Peter Zijlstra
2021-10-27 13:30 ` Ard Biesheuvel
2021-10-27 14:03 ` Peter Zijlstra
2021-10-27 14:18 ` Ard Biesheuvel
2021-10-27 14:36 ` Peter Zijlstra
2021-10-27 15:50 ` Sami Tolvanen
2021-10-27 15:55 ` Ard Biesheuvel
2021-10-29 20:03 ` Peter Zijlstra
2021-10-30 7:47 ` [PATCH] static_call,x86: Robustify trampoline patching Peter Zijlstra
2021-10-30 8:16 ` Peter Zijlstra
2021-11-02 17:35 ` Kees Cook
2021-11-02 18:15 ` Peter Zijlstra
2021-11-15 13:09 ` Rasmus Villemoes
2021-10-30 17:19 ` Ard Biesheuvel
2021-10-30 18:02 ` Peter Zijlstra
2021-10-30 18:55 ` Ard Biesheuvel
2021-10-31 16:24 ` Ard Biesheuvel
2021-10-31 16:39 ` Peter Zijlstra
2021-10-31 16:44 ` Ard Biesheuvel
2021-10-31 20:09 ` Peter Zijlstra
2021-10-31 20:21 ` Ard Biesheuvel
2021-10-31 20:44 ` Peter Zijlstra
2021-10-31 23:36 ` Ard Biesheuvel
2021-11-01 9:01 ` Peter Zijlstra
2021-11-01 9:36 ` David Laight
2021-11-01 14:14 ` Ard Biesheuvel
2021-11-02 12:57 ` Peter Zijlstra
2021-11-02 15:15 ` Peter Zijlstra
2021-11-02 17:44 ` Ard Biesheuvel
2021-11-02 18:14 ` Peter Zijlstra
2021-11-02 18:17 ` Peter Zijlstra
2021-11-02 18:18 ` Ard Biesheuvel
2021-11-02 21:48 ` Peter Zijlstra
2021-11-02 18:10 ` Kees Cook
2021-11-02 21:02 ` Andy Lutomirski
2021-11-02 23:13 ` Kees Cook
2021-11-03 0:20 ` Andy Lutomirski
2021-11-03 8:35 ` Peter Zijlstra
2021-11-03 10:01 ` David Laight
2021-11-03 19:32 ` Andy Lutomirski
2021-11-02 21:19 ` Peter Zijlstra
2021-11-11 12:15 ` [tip: locking/urgent] " tip-bot2 for Peter Zijlstra
2021-10-30 19:07 ` [PATCH v5 00/15] x86: Add support for Clang CFI Sami Tolvanen
2021-10-27 17:11 ` Kees Cook
2021-10-27 21:21 ` Peter Zijlstra
2021-10-27 22:27 ` Kees Cook
2021-10-28 11:09 ` Peter Zijlstra
2021-10-28 17:12 ` Kees Cook
2021-10-28 20:29 ` Peter Zijlstra
2021-11-02 17:26 ` Kees Cook
2021-11-01 4:13 ` Andy Lutomirski
2021-10-27 12:46 ` Peter Zijlstra
2021-10-27 12:55 ` David Laight
2021-10-27 13:17 ` Mark Rutland
2021-10-27 21:31 ` David Laight
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