From 98c0cc48e27e9d269a3e4db2acd72b486c88ec77 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Thu, 8 Aug 2024 08:50:03 -0700 Subject: [PATCH] apparmor: fix policy_unpack_test on big endian systems policy_unpack_test fails on big endian systems because data byte order is expected to be little endian but is generated in host byte order. This results in test failures such as: # policy_unpack_test_unpack_array_with_null_name: EXPECTATION FAILED at security/apparmor/policy_unpack_test.c:150 Expected array_size == (u16)16, but array_size == 4096 (0x1000) (u16)16 == 16 (0x10) # policy_unpack_test_unpack_array_with_null_name: pass:0 fail:1 skip:0 total:1 not ok 3 policy_unpack_test_unpack_array_with_null_name # policy_unpack_test_unpack_array_with_name: EXPECTATION FAILED at security/apparmor/policy_unpack_test.c:164 Expected array_size == (u16)16, but array_size == 4096 (0x1000) (u16)16 == 16 (0x10) # policy_unpack_test_unpack_array_with_name: pass:0 fail:1 skip:0 total:1 Add the missing endianness conversions when generating test data. Fixes: 4d944bcd4e73 ("apparmor: add AppArmor KUnit tests for policy unpack") Cc: Brendan Higgins Cc: Kees Cook Signed-off-by: Guenter Roeck --- security/apparmor/policy_unpack_test.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/security/apparmor/policy_unpack_test.c b/security/apparmor/policy_unpack_test.c index 874fcf97794e..c64733d6c98f 100644 --- a/security/apparmor/policy_unpack_test.c +++ b/security/apparmor/policy_unpack_test.c @@ -80,14 +80,14 @@ static struct aa_ext *build_aa_ext_struct(struct policy_unpack_fixture *puf, *(buf + 1) = strlen(TEST_U32_NAME) + 1; strscpy(buf + 3, TEST_U32_NAME, e->end - (void *)(buf + 3)); *(buf + 3 + strlen(TEST_U32_NAME) + 1) = AA_U32; - *((u32 *)(buf + 3 + strlen(TEST_U32_NAME) + 2)) = TEST_U32_DATA; + *((__le32 *)(buf + 3 + strlen(TEST_U32_NAME) + 2)) = cpu_to_le32(TEST_U32_DATA); buf = e->start + TEST_NAMED_U64_BUF_OFFSET; *buf = AA_NAME; *(buf + 1) = strlen(TEST_U64_NAME) + 1; strscpy(buf + 3, TEST_U64_NAME, e->end - (void *)(buf + 3)); *(buf + 3 + strlen(TEST_U64_NAME) + 1) = AA_U64; - *((u64 *)(buf + 3 + strlen(TEST_U64_NAME) + 2)) = TEST_U64_DATA; + *((__le64 *)(buf + 3 + strlen(TEST_U64_NAME) + 2)) = cpu_to_le64(TEST_U64_DATA); buf = e->start + TEST_NAMED_BLOB_BUF_OFFSET; *buf = AA_NAME; @@ -103,7 +103,7 @@ static struct aa_ext *build_aa_ext_struct(struct policy_unpack_fixture *puf, *(buf + 1) = strlen(TEST_ARRAY_NAME) + 1; strscpy(buf + 3, TEST_ARRAY_NAME, e->end - (void *)(buf + 3)); *(buf + 3 + strlen(TEST_ARRAY_NAME) + 1) = AA_ARRAY; - *((u16 *)(buf + 3 + strlen(TEST_ARRAY_NAME) + 2)) = TEST_ARRAY_SIZE; + *((__le16 *)(buf + 3 + strlen(TEST_ARRAY_NAME) + 2)) = cpu_to_le16(TEST_ARRAY_SIZE); return e; }