On Tue, May 13, 2025 at 12:39 PM Casey Schaufler [off-list ref] wrote:

On 4/9/2025 11:50 AM, Paul Moore wrote:

quoted

Add two new variables, lsm_count_prop_subj and lsm_count_prop_obj, to
count the number of lsm_prop entries for subjects and objects across all
of the enabled LSMs.  Future patches will use this to continue the
conversion towards the lsm_prop struct.

Signed-off-by: Paul Moore <paul@paul-moore.com>
---
 include/linux/lsm_hooks.h         | 6 ++++++
 security/apparmor/lsm.c           | 1 +
 security/bpf/hooks.c              | 1 +
 security/commoncap.c              | 1 +
 security/integrity/evm/evm_main.c | 1 +
 security/integrity/ima/ima_main.c | 1 +
 security/ipe/ipe.c                | 1 +
 security/landlock/setup.c         | 1 +
 security/loadpin/loadpin.c        | 1 +
 security/lockdown/lockdown.c      | 1 +
 security/lsm.h                    | 4 ++++
 security/lsm_init.c               | 6 ++++++
 security/safesetid/lsm.c          | 1 +
 security/security.c               | 3 +++
 security/selinux/hooks.c          | 1 +
 security/smack/smack_lsm.c        | 1 +
 security/tomoyo/tomoyo.c          | 1 +
 security/yama/yama_lsm.c          | 1 +
 18 files changed, 33 insertions(+)

...

quoted

diff --git a/security/bpf/hooks.c b/security/bpf/hooks.c
index 40efde233f3a..c72df6ff69f7 100644
--- a/security/bpf/hooks.c
+++ b/security/bpf/hooks.c

@@ -18,6 +18,7 @@ static struct security_hook_list bpf_lsm_hooks[] __ro_after_init = {
 static const struct lsm_id bpf_lsmid = {
      .name = "bpf",
      .id = LSM_ID_BPF,
+     .flags = LSM_ID_FLG_PROP_SUBJ | LSM_ID_FLG_PROP_OBJ,

There's a problem here. BPF can have properties, but usually does not.
Unless there's a bpf program loaded that provides them it is incorrect
to use these flags. You can't know that at initialization.

I have an alternative that will address this that I will propose
shortly.

Okay, thanks.

-- 
paul-moore.com