linux-kernel - Re: [PATCH v3] LSM: use 32 bit compatible data types in LSM syscalls.

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Date: Wed, 13 Mar 2024 16:07:00 -0400
From: Paul Moore <paul@...l-moore.com>
To: Casey Schaufler <casey@...aufler-ca.com>, "Dmitry V. Levin" <ldv@...ace.io>, LSM List <linux-security-module@...r.kernel.org>
Cc: Linux kernel mailing list <linux-kernel@...r.kernel.org>, linux-api@...r.kernel.org, Mickaël Salaün <mic@...ikod.net>, James Morris <jmorris@...ei.org>, Serge Hallyn <serge@...lyn.com>, John Johansen <john.johansen@...onical.com>, Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>, Stephen Smalley <stephen.smalley.work@...il.com>, Casey Schaufler <casey@...aufler-ca.com>
Subject: Re: [PATCH v3] LSM: use 32 bit compatible data types in LSM syscalls.

On Mar 13, 2024 Casey Schaufler <casey@...aufler-ca.com> wrote:
> 
> LSM: use 32 bit compatible data types in LSM syscalls.
> 
> Change the size parameters in lsm_list_modules(), lsm_set_self_attr()
> and lsm_get_self_attr() from size_t to u32. This avoids the need to
> have different interfaces for 32 and 64 bit systems.
> 
> Cc: stable@...r.kernel.org
> Fixes: a04a1198088a: ("LSM: syscalls for current process attributes")
> Fixes: ad4aff9ec25f: ("LSM: Create lsm_list_modules system call")
> Signed-off-by: Casey Schaufler <casey@...aufler-ca.com>
> Reported-and-reviewed-by: Dmitry V. Levin <ldv@...ace.io>
> ---
>  include/linux/lsm_hook_defs.h                        |  4 ++--
>  include/linux/security.h                             |  8 ++++----
>  security/apparmor/lsm.c                              |  4 ++--
>  security/lsm_syscalls.c                              | 10 +++++-----
>  security/security.c                                  | 12 ++++++------
>  security/selinux/hooks.c                             |  4 ++--
>  security/smack/smack_lsm.c                           |  4 ++--
>  tools/testing/selftests/lsm/common.h                 |  6 +++---
>  tools/testing/selftests/lsm/lsm_get_self_attr_test.c | 10 +++++-----
>  tools/testing/selftests/lsm/lsm_list_modules_test.c  |  8 ++++----
>  tools/testing/selftests/lsm/lsm_set_self_attr_test.c |  6 +++---
>  11 files changed, 38 insertions(+), 38 deletions(-)

Okay, this looks better, I'm going to merge this into lsm/stable-6.9
and put it through the usual automated testing as well as a kselftest
run to make sure everything there is still okay.  Assuming all goes
well and no one raises any objections, I'll likely send this up to
Linus tomorrow.

Thanks everyone!

--
paul-moore.com