linux-kernel - [PATCH v2 0/3] um: allow static linking for non-glibc libc implementations

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-next>] [day] [month] [year] [list]

Message-Id: <20200704085213.444645-1-ignat@cloudflare.com>
Date:   Sat,  4 Jul 2020 09:52:10 +0100
From:   Ignat Korchagin <ignat@...udflare.com>
To:     jdike@...toit.com, richard@....at, anton.ivanov@...bridgegreys.com,
        brendanhiggins@...gle.com, linux-um@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Cc:     Ignat Korchagin <ignat@...udflare.com>, kernel-team@...udflare.com
Subject: [PATCH v2 0/3] um: allow static linking for non-glibc libc implementations

This is a continuation of [1]. Since I was able to produce a working UML binary
with UML_NET_VECTOR linked with musl with the changes included in the patches
here. I was compiling on Arch Linux, so hopefully all the latest versions of
the compiler, libraries and binutils.

I also tested allyesconfig with both musl and glibc. The compilation succeeds
with both, however both binaries (glibc one being dynamically linked) segfault
on start. This is probably of some incompatible config option/module being
included and not related to musl/glibc.

[1]: https://patchwork.ozlabs.org/project/linux-um/patch/20200624212319.403689-1-ignat@cloudflare.com/

Ignat Korchagin (3):
  um/kconfig: introduce CC_CAN_LINK_STATIC_NO_RUNTIME_DEPS
  um: some fixes to build UML with musl
  um: allow static linking for non-glibc implementations

 arch/um/Kconfig               |  2 +-
 arch/um/drivers/Kconfig       |  3 ---
 arch/um/drivers/daemon_user.c |  1 +
 arch/um/drivers/pcap_user.c   | 12 ++++++------
 arch/um/drivers/slip_user.c   |  2 +-
 arch/um/drivers/vector_user.c |  4 +---
 arch/um/os-Linux/util.c       |  2 +-
 arch/x86/um/user-offsets.c    |  2 +-
 init/Kconfig                  |  6 ++++++
 scripts/cc-can-link.sh        |  5 +++--
 10 files changed, 21 insertions(+), 18 deletions(-)

-- 
2.20.1