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X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Jun 2025 13:35:05.7493 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 746ad379-e5b8-46b6-abc3-08dda8ecc6db X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d;Ip=[4.158.2.129];Helo=[outbound-uk1.az.dlp.m.darktrace.com] X-MS-Exchange-CrossTenant-AuthSource: DB5PEPF00014B97.eurprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DBBPR08MB10842 Hi Mark, > On Wed, Jun 11, 2025 at 10:41:07AM +0100, Yeoreum Yun wrote: > > > +static int check_anonymous_memory_mapping(int mem_type, int mode, int mapping, int tag_check, int atag_check) > > { > > char *ptr, *map_ptr; > > int run, result, map_size; > > @@ -97,16 +106,16 @@ static int check_anonymous_memory_mapping(int mem_type, int mode, int mapping, i > > munmap((void *)map_ptr, map_size); > > return KSFT_FAIL; > > } > > - result = check_mte_memory(ptr, sizes[run], mode, tag_check); > > + result = check_mte_memory(ptr, sizes[run], mode, tag_check, atag_check); > > mte_clear_tags((void *)ptr, sizes[run]); > > mte_free_memory((void *)map_ptr, map_size, mem_type, false); > > - if (result == KSFT_FAIL) > > - return KSFT_FAIL; > > + if (result != KSFT_SKIP) > > + return result; > > } > > This changes the logic to exit the loop immediately if the check passes > which doesn't seem like what we want, should we instead change the test > to be: > > if (result != KSFT_PASS) > > which I think is more the intent? Well, at the time of write, when the check_mte_memory return the "SKIP" intent is to iterating the next item. But, yes this is meandingless. I'll change with your suggestion. > > > + result = check_mte_memory(ptr, sizes[run], mode, TAG_CHECK_ON, atag_check); > > mte_free_memory_tag_range((void *)ptr, sizes[run], mem_type, UNDERFLOW, OVERFLOW); > > if (result != KSFT_PASS) > > return KSFT_FAIL; > > @@ -192,7 +201,7 @@ static int check_clear_prot_mte_flag(int mem_type, int mode, int mapping) > > close(fd); > > return KSFT_FAIL; > > } > > Won't this upgrade any skips to fails? Right. I'll change this. Thanks! -- Sincerely, Yeoreum Yun