Merge tag 'apparmor-pr-2022-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor

Pull apparmor updates from John Johansen:
 "Features:
   - switch to zstd compression for profile raw data

  Cleanups:
   - simplify obtaining the newest label on a cred
   - remove useless static inline functions
   - compute permission conversion on policy unpack
   - refactor code to share common permissins
   - refactor unpack to group policy backwards compatiblity code
   - add __init annotation to aa_{setup/teardown}_dfa_engine()

  Bug Fixes:
   - fix a memleak in
       - multi_transaction_new()
       - free_ruleset()
       - unpack_profile()
       - alloc_ns()
   - fix lockdep warning when removing a namespace
   - fix regression in stacking due to label flags
   - fix loading of child before parent
   - fix kernel-doc comments that differ from fns
   - fix spelling errors in comments
   - store return value of unpack_perms_table() to signed variable"

* tag 'apparmor-pr-2022-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor: (64 commits)
  apparmor: Fix uninitialized symbol 'array_size' in policy_unpack_test.c
  apparmor: Add __init annotation to aa_{setup/teardown}_dfa_engine()
  apparmor: Fix memleak in alloc_ns()
  apparmor: Fix memleak issue in unpack_profile()
  apparmor: fix a memleak in free_ruleset()
  apparmor: Fix spelling of function name in comment block
  apparmor: Use pointer to struct aa_label for lbs_cred
  AppArmor: Fix kernel-doc
  LSM: Fix kernel-doc
  AppArmor: Fix kernel-doc
  apparmor: Fix loading of child before parent
  apparmor: refactor code that alloc null profiles
  apparmor: fix obsoleted comments for aa_getprocattr() and audit_resource()
  apparmor: remove useless static inline functions
  apparmor: Fix unpack_profile() warn: passing zero to 'ERR_PTR'
  apparmor: fix uninitialize table variable in error in unpack_trans_table
  apparmor: store return value of unpack_perms_table() to signed variable
  apparmor: Fix kunit test for out of bounds array
  apparmor: Fix decompression of rawdata for read back to userspace
  apparmor: Fix undefined references to zstd_ symbols
  ...

1 files changed, 16 insertions, 12 deletions

diff --git a/security/apparmor/net.c b/security/apparmor/net.c
index 7efe4d17273d..788be1609a86 100644
--- a/security/apparmor/net.c
+++ b/security/apparmor/net.c
@@ -108,8 +108,10 @@ void audit_net_cb(struct audit_buffer *ab, void *va)
 int aa_profile_af_perm(struct aa_profile *profile, struct common_audit_data *sa,
 		       u32 request, u16 family, int type)
 {
+	struct aa_ruleset *rules = list_first_entry(&profile->rules,
+						    typeof(*rules), list);
 	struct aa_perms perms = { };
-	unsigned int state;
+	aa_state_t state;
 	__be16 buffer[2];
 
 	AA_BUG(family >= AF_MAX);
@@ -117,15 +119,15 @@ int aa_profile_af_perm(struct aa_profile *profile, struct common_audit_data *sa,
 
 	if (profile_unconfined(profile))
 		return 0;
-	state = PROFILE_MEDIATES(profile, AA_CLASS_NET);
+	state = RULE_MEDIATES(rules, AA_CLASS_NET);
 	if (!state)
 		return 0;
 
 	buffer[0] = cpu_to_be16(family);
 	buffer[1] = cpu_to_be16((u16) type);
-	state = aa_dfa_match_len(profile->policy.dfa, state, (char *) &buffer,
+	state = aa_dfa_match_len(rules->policy.dfa, state, (char *) &buffer,
 				 4);
-	aa_compute_perms(profile->policy.dfa, state, &perms);
+	perms = *aa_lookup_perms(&rules->policy, state);
 	aa_apply_modes_to_perms(profile, &perms);
 
 	return aa_check_perms(profile, &perms, request, sa, audit_net_cb);
@@ -216,25 +218,27 @@ static int aa_secmark_perm(struct aa_profile *profile, u32 request, u32 secid,
 {
 	int i, ret;
 	struct aa_perms perms = { };
+	struct aa_ruleset *rules = list_first_entry(&profile->rules,
+						    typeof(*rules), list);
 
-	if (profile->secmark_count == 0)
+	if (rules->secmark_count == 0)
 		return 0;
 
-	for (i = 0; i < profile->secmark_count; i++) {
-		if (!profile->secmark[i].secid) {
-			ret = apparmor_secmark_init(&profile->secmark[i]);
+	for (i = 0; i < rules->secmark_count; i++) {
+		if (!rules->secmark[i].secid) {
+			ret = apparmor_secmark_init(&rules->secmark[i]);
 			if (ret)
 				return ret;
 		}
 
-		if (profile->secmark[i].secid == secid ||
-		    profile->secmark[i].secid == AA_SECID_WILDCARD) {
-			if (profile->secmark[i].deny)
+		if (rules->secmark[i].secid == secid ||
+		    rules->secmark[i].secid == AA_SECID_WILDCARD) {
+			if (rules->secmark[i].deny)
 				perms.deny = ALL_PERMS_MASK;
 			else
 				perms.allow = ALL_PERMS_MASK;
 
-			if (profile->secmark[i].audit)
+			if (rules->secmark[i].audit)
 				perms.audit = ALL_PERMS_MASK;
 		}
 	}