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X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Jun 2025 13:27:12.6140 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 09b1d1fc-251d-4fc8-c566-08dda8ebacd8 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: DB1PEPF0003922E.eurprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: GV1PR08MB8178 Hi Mark, > On Wed, Jun 11, 2025 at 10:41:05AM +0100, Yeoreum Yun wrote: > > Add the address tag [63:60] verification when synchronous mte fault is happen. > > when signal handler is registered with SA_EXPOSE_TAGBITS, > > address includes not only memory tag [59:56] but also address tag. > > Therefore, when verify fault address location, remove both tags > > Reviewed-by: Mark Brown Thanks :D > though if you're doing a new version there's minor stylistic stuff: > > > /* Compare the context for precise error */ > > else if (si->si_code == SEGV_MTESERR) { > > + if ((!mtefar_support && si_atag) || (si_atag != MT_FETCH_ATAG(cur_mte_cxt.trig_addr))) { > > + ksft_print_msg("Invalid MTE synchronous exception caught for address tag! si_tag=%x, si_atag: %x\n", si_tag, si_atag); > > + exit(KSFT_FAIL); > > + } > > Indentation seems off, also there's ksft_exit_fail_msg() but either way > works. I'll fix the indentation next round. Thanks to let me know. -- Sincerely, Yeoreum Yun