From: Nick Desaulniers <ndesaulniers@google.com>
To: bp@alien8.de
Cc: Thomas.Lendacky@amd.com, hpa@zytor.com, issor.oruam@gmail.com,
keescook@chromium.org, linux-kernel@vger.kernel.org,
matz@suse.de, mingo@redhat.com, nivedita@alum.mit.edu,
tglx@linutronix.de, x86@kernel.org, x@vger.kernel.org,
clang-built-linux@googlegroups.com,
Nick Desaulniers <ndesaulniers@google.com>
Subject: Re: [PATCH] Documentation/changes: Raise minimum supported binutilsa version to 2.23
Date: Mon, 23 Mar 2020 13:50:59 -0700 [thread overview]
Message-ID: <20200323205059.59037-1-ndesaulniers@google.com> (raw)
In-Reply-To: <20200316160259.GN26126@zn.tnic>
> The currently minimum-supported binutils version 2.21 has the problem of
> promoting symbols which are defined outside of a section into absolute.
> According to Arvind:
>
> binutils-2.21 and -2.22. An x86-64 defconfig will fail with
> Invalid absolute R_X86_64_32S relocation: _etext
> and after fixing that one, with
> Invalid absolute R_X86_64_32S relocation: __end_of_kernel_reserve
>
> Those two versions of binutils have a bug when it comes to handling
> symbols defined outside of a section and binutils 2.23 has the proper
> fix, see: https://sourceware.org/legacy-ml/binutils/2012-06/msg00155.html
>
> Therefore, up to the fixed version directly, skipping the broken ones.
>
> Currently shipping distros already have the fixed binutils version so
> there should be no breakage resulting from this.
>
> For more details about the whole thing, see the thread in Link.
>
> Signed-off-by: Borislav Petkov <bp@suse.de>
> Link: https://lkml.kernel.org/r/20200110202349.1881840-1-nivedita@alum.mit.edu
Acked-by: Nick Desaulniers <ndesaulniers@google.com>
next prev parent reply other threads:[~2020-03-23 20:51 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-10 20:23 [PATCH] x86/tools/relocs: Add _etext and __end_of_kernel_reserve to S_REL Arvind Sankar
2020-01-10 20:38 ` Borislav Petkov
2020-01-10 20:50 ` Arvind Sankar
2020-01-10 21:50 ` [PATCH v2] " Arvind Sankar
2020-01-10 21:52 ` Arvind Sankar
2020-01-11 13:02 ` [PATCH] " Borislav Petkov
2020-01-11 17:20 ` Arvind Sankar
2020-01-11 17:32 ` Arvind Sankar
2020-01-13 13:43 ` Borislav Petkov
2020-01-13 16:13 ` Arvind Sankar
2020-01-13 16:38 ` Borislav Petkov
2020-01-13 17:59 ` Arvind Sankar
2020-01-13 18:08 ` Borislav Petkov
2020-01-14 4:17 ` Arvind Sankar
2020-01-14 11:25 ` Borislav Petkov
2020-01-14 16:32 ` Arvind Sankar
2020-01-14 4:08 ` Arvind Sankar
2020-01-13 19:53 ` [PATCH v3] x86/vmlinux: Fix vmlinux.lds.S with pre-2.23 binutils Arvind Sankar
2020-01-13 21:46 ` Tom Lendacky
2020-01-13 23:06 ` Arvind Sankar
2020-01-14 1:53 ` Kees Cook
2020-01-14 1:57 ` H. Peter Anvin
2020-01-14 2:20 ` Kees Cook
2020-01-14 3:58 ` Arvind Sankar
2020-01-14 5:05 ` hpa
2020-01-14 16:51 ` Borislav Petkov
2020-01-14 21:50 ` hpa
2020-01-15 0:21 ` Arvind Sankar
2020-01-15 12:24 ` Borislav Petkov
2020-03-16 16:02 ` [PATCH] Documentation/changes: Raise minimum supported binutils version to 2.23 Borislav Petkov
2020-03-16 20:54 ` Kees Cook
2020-03-23 20:44 ` Jason A. Donenfeld
2020-03-23 20:51 ` Kees Cook
2020-03-23 21:11 ` Jason A. Donenfeld
2020-03-25 17:33 ` David Laight
2020-03-24 9:02 ` Masahiro Yamada
2020-03-24 9:12 ` Masahiro Yamada
2020-03-24 15:38 ` Arvind Sankar
2020-03-24 17:31 ` Masahiro Yamada
2020-03-24 21:36 ` Arvind Sankar
2020-03-24 9:14 ` Borislav Petkov
2020-03-24 9:40 ` Masahiro Yamada
2020-03-24 12:00 ` Borislav Petkov
2020-03-24 16:22 ` Jason A. Donenfeld
2020-03-24 16:28 ` Borislav Petkov
2020-03-24 16:37 ` Linus Torvalds
2020-03-24 16:48 ` Borislav Petkov
2020-03-24 21:42 ` Arvind Sankar
2020-03-24 22:01 ` Arvind Sankar
2020-03-24 22:14 ` Linus Torvalds
2020-03-24 23:49 ` Arvind Sankar
2020-03-24 17:53 ` Kees Cook
2020-03-23 20:50 ` Nick Desaulniers [this message]
2020-01-13 23:38 ` [PATCH] x86/tools/relocs: Add _etext and __end_of_kernel_reserve to S_REL Arvind Sankar
2020-01-10 20:56 ` Kees Cook
[not found] ` <CAEQFVGa4fksPRtiLtBckSgbJY_JSHr07hoy5+5w-pAYym16YVg@mail.gmail.com>
2020-01-11 19:40 ` Fwd: " Mauro Rossi
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