linux-kernel - Re: [PATCH 1/3] rust: arch/um: Use 'pie' relocation mode under UML

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <387962BE-A8FA-4D35-9905-30D3685E38AC@m3y3r.de>
Date:   Sun, 15 Jan 2023 11:30:17 +0100
From:   Thomas Meyer <thomas@...3r.de>
To:     linux-um@...ts.infradead.org, David Gow <davidgow@...gle.com>,
        Miguel Ojeda <ojeda@...nel.org>,
        Björn Roy Baron <bjorn3_gh@...tonmail.com>,
        Richard Weinberger <richard@....at>,
        Anton Ivanov <anton.ivanov@...bridgegreys.com>,
        Johannes Berg <johannes@...solutions.net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>
CC:     rust-for-linux@...r.kernel.org, llvm@...ts.linux.dev,
        linux-doc@...r.kernel.org, kunit-dev@...glegroups.com,
        x86@...nel.org, linux-kernel@...r.kernel.org,
        Wedson Almeida Filho <wedsonaf@...il.com>,
        Gary Guo <gary@...yguo.net>,
        Brendan Higgins <brendan.higgins@...ux.dev>,
        Daniel Latypov <dlatypov@...gle.com>,
        Jonathan Corbet <corbet@....net>
Subject: Re: [PATCH 1/3] rust: arch/um: Use 'pie' relocation mode under UML

Hi,


Am 17. Dezember 2022 05:44:34 MEZ schrieb David Gow <davidgow@...gle.com>:
>UML expects a position independent executable for some reason, 

I think I did add this to make UML build on Debian...

> so tell
>rustc to generate pie objects. Otherwise we get a bunch of relocations
>we can't deal with in libcore.
>
>Signed-off-by: David Gow <davidgow@...gle.com>
>---
> arch/um/Makefile | 2 ++
> 1 file changed, 2 insertions(+)
>
>diff --git a/arch/um/Makefile b/arch/um/Makefile
>index f1d4d67157be..ae321282dc6f 100644
>--- a/arch/um/Makefile
>+++ b/arch/um/Makefile
>@@ -68,6 +68,8 @@ KBUILD_CFLAGS += $(CFLAGS) $(CFLAGS-y) -D__arch_um__ \
> 	-Din6addr_loopback=kernel_in6addr_loopback \
> 	-Din6addr_any=kernel_in6addr_any -Dstrrchr=kernel_strrchr
> 
>+KBUILD_RUSTFLAGS += -Crelocation-model=pie
>+
> KBUILD_AFLAGS += $(ARCH_INCLUDE)
> 
> USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -I%,,$(KBUILD_CFLAGS))) \

-- 
Diese Nachricht wurde von meinem Android-Gerät mit K-9 Mail gesendet.