linux-kernel - [PATCH 0/3] x86/entry: A compat syscall bugfix and some test stuff

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]

Date:   Mon, 22 Feb 2021 21:50:26 -0800
From:   Andy Lutomirski <luto@...nel.org>
To:     x86@...nel.org
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Andy Lutomirski <luto@...nel.org>
Subject: [PATCH 0/3] x86/entry: A compat syscall bugfix and some test stuff

The compat syscall argument fixup error path is wrong.  Fix it.

This also adds some sanity checks to the kernel that catch the bug
when running selftests.

Andy Lutomirski (3):
  entry: Check that syscall entries and syscall exits match
  x86/entry: Fix entry/exit mismatch on failed fast 32-bit syscalls
  selftests/x86: Add a missing .note.GNU-stack section to thunks_32.S

 arch/x86/entry/common.c                 |  3 ++-
 include/linux/entry-common.h            | 11 +++++++++++
 include/linux/sched.h                   |  1 +
 init/init_task.c                        |  9 +++++++++
 kernel/entry/common.c                   | 25 ++++++++++++++++++++++++-
 tools/testing/selftests/x86/thunks_32.S |  2 ++
 6 files changed, 49 insertions(+), 2 deletions(-)

-- 
2.29.2