[LTP] [PATCH] syscalls/lsm_list_modules02: Log unrecognized LSM IDs with TINFO instead of TBROK

[Wake Liu]

When running lsm_list_modules02 on systems with newer upstream kernels
containing newly introduced LSMs, or on vendor/OEM kernels with out-of-tree
security modules enabled, lsm_list_modules(ids, size, 0) returns valid LSM
IDs that might not yet be mapped in the hardcoded switch (ids[i]) table.

Currently, encountering any unrecognized LSM ID causes the test to immediately
terminate with tst_brk(TBROK, "Unsupported LSM: %lu", ids[i]). This prevents
testing of other well-known standard LSMs present on the system.

Downgrade the unrecognized LSM ID handling from TBROK to TINFO and continue
iterating over the remaining IDs. This improves test robustness across
various kernel configurations while maintaining rigorous verification for all
known standard LSM modules.

Signed-off-by: Wake Liu <wakel@google.com>
---
 testcases/kernel/syscalls/lsm/lsm_list_modules02.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/testcases/kernel/syscalls/lsm/lsm_list_modules02.c b/testcases/kernel/syscalls/lsm/lsm_list_modules02.c
index 91e5b7fa2..ede89ee73 100644
--- a/testcases/kernel/syscalls/lsm/lsm_list_modules02.c
+++ b/testcases/kernel/syscalls/lsm/lsm_list_modules02.c
@@ -95,8 +95,11 @@ static void run(void)
 			break;
 		}
 
-		if (!name)
-			tst_brk(TBROK, "Unsupported LSM: %lu", ids[i]);
+		if (!name) {
+			tst_res(TINFO, "Skipping unrecognized LSM ID: %lu",
+				(unsigned long)ids[i]);
+			continue;
+		}
 
 		for (counter = 0; counter < lsm_names_count; counter++) {
 			if (!strcmp(name, lsm_names[counter].name)) {
-- 
2.55.0.rc0.799.gd6f94ed593-goog