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McKenney" Cc: lkp@intel.com, kbuild-all@lists.01.org, GNU/Weeb Mailing List , linux-kernel@vger.kernel.org Subject: [kbuild] [ammarfaizi2-block:paulmck/linux-rcu/dev 80/83] kernel/rcu/srcutree.c:1426 srcu_torture_stats_print() error: buffer overflow 'srcu_size_state_name' 10 <= 10 Message-ID: <202201261439.SqXHa4LN-lkp@intel.com> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Message-ID-Hash: ATG4KQ5EX4EKBJRPMB3TYEJWTG2EM5AP User-Agent: Mutt/1.9.4 (2018-02-28) X-ClientProxiedBy: JNAP275CA0034.ZAFP275.PROD.OUTLOOK.COM (2603:1086:0:4d::11) To MWHPR1001MB2365.namprd10.prod.outlook.com (2603:10b6:301:2d::28) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: affbe3ab-9e21-4258-be83-08d9e09e7de1 X-MS-TrafficTypeDiagnostic: DM6PR10MB3545:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:80; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:MWHPR1001MB2365.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230001)(366004)(44832011)(1076003)(186003)(26005)(8676002)(5660300002)(8936002)(6916009)(508600001)(316002)(966005)(6486002)(86362001)(36756003)(9686003)(6506007)(38100700002)(6666004)(6512007)(4001150100001)(52116002)(66476007)(66556008)(83380400001)(4326008)(2906002)(38350700002)(66946007)(20210929001);DIR:OUT;SFP:1101; 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McKenney 2018-10-28 1415 void srcu_torture_stats_print(struct srcu_struct *ssp, char *tt, char *tf) 115a1a5285664f Paul E. McKenney 2017-05-22 1416 { 115a1a5285664f Paul E. McKenney 2017-05-22 1417 int cpu; 115a1a5285664f Paul E. McKenney 2017-05-22 1418 int idx; ac3748c6042660 Paul E. McKenney 2017-05-22 1419 unsigned long s0 = 0, s1 = 0; 6d5d02daa5c017 Paul E. McKenney 2022-01-24 1420 int ss_state = READ_ONCE(ssp->srcu_size_state); 6d5d02daa5c017 Paul E. McKenney 2022-01-24 1421 int ss_state_idx = ss_state; 115a1a5285664f Paul E. McKenney 2017-05-22 1422 aacb5d91ab1bfb Paul E. McKenney 2018-10-28 1423 idx = ssp->srcu_idx & 0x1; 6d5d02daa5c017 Paul E. McKenney 2022-01-24 1424 if (ss_state < 0 || ss_state >= ARRAY_SIZE(srcu_size_state_name)) 6d5d02daa5c017 Paul E. McKenney 2022-01-24 1425 ss_state_idx = ARRAY_SIZE(srcu_size_state_name); This was supposed to be ss_state_idx = ARRAY_SIZE(srcu_size_state_name) - 1; 6d5d02daa5c017 Paul E. McKenney 2022-01-24 @1426 pr_alert("%s%s Tree SRCU g%ld state %d (%s) per-CPU(idx=%d):", 6d5d02daa5c017 Paul E. McKenney 2022-01-24 1427 tt, tf, rcu_seq_current(&ssp->srcu_gp_seq), ss_state, 6d5d02daa5c017 Paul E. McKenney 2022-01-24 1428 srcu_size_state_name[ss_state_idx], idx); 115a1a5285664f Paul E. McKenney 2017-05-22 1429 for_each_possible_cpu(cpu) { 115a1a5285664f Paul E. McKenney 2017-05-22 1430 unsigned long l0, l1; 115a1a5285664f Paul E. McKenney 2017-05-22 1431 unsigned long u0, u1; 115a1a5285664f Paul E. McKenney 2017-05-22 1432 long c0, c1; 5ab07a8df4d6c9 Paul E. McKenney 2018-05-22 1433 struct srcu_data *sdp; 115a1a5285664f Paul E. McKenney 2017-05-22 1434 aacb5d91ab1bfb Paul E. McKenney 2018-10-28 1435 sdp = per_cpu_ptr(ssp->sda, cpu); b68c6146512d92 Paul E. McKenney 2020-01-03 1436 u0 = data_race(sdp->srcu_unlock_count[!idx]); b68c6146512d92 Paul E. McKenney 2020-01-03 1437 u1 = data_race(sdp->srcu_unlock_count[idx]); 115a1a5285664f Paul E. McKenney 2017-05-22 1438 115a1a5285664f Paul E. McKenney 2017-05-22 1439 /* 115a1a5285664f Paul E. McKenney 2017-05-22 1440 * Make sure that a lock is always counted if the corresponding 115a1a5285664f Paul E. McKenney 2017-05-22 1441 * unlock is counted. 115a1a5285664f Paul E. McKenney 2017-05-22 1442 */ 115a1a5285664f Paul E. McKenney 2017-05-22 1443 smp_rmb(); 115a1a5285664f Paul E. McKenney 2017-05-22 1444 b68c6146512d92 Paul E. McKenney 2020-01-03 1445 l0 = data_race(sdp->srcu_lock_count[!idx]); b68c6146512d92 Paul E. McKenney 2020-01-03 1446 l1 = data_race(sdp->srcu_lock_count[idx]); 115a1a5285664f Paul E. McKenney 2017-05-22 1447 115a1a5285664f Paul E. McKenney 2017-05-22 1448 c0 = l0 - u0; 115a1a5285664f Paul E. McKenney 2017-05-22 1449 c1 = l1 - u1; 7e210a653ec944 Paul E. McKenney 2019-06-28 1450 pr_cont(" %d(%ld,%ld %c)", 7e210a653ec944 Paul E. McKenney 2019-06-28 1451 cpu, c0, c1, 7e210a653ec944 Paul E. McKenney 2019-06-28 1452 "C."[rcu_segcblist_empty(&sdp->srcu_cblist)]); ac3748c6042660 Paul E. McKenney 2017-05-22 1453 s0 += c0; ac3748c6042660 Paul E. McKenney 2017-05-22 1454 s1 += c1; 115a1a5285664f Paul E. McKenney 2017-05-22 1455 } ac3748c6042660 Paul E. McKenney 2017-05-22 1456 pr_cont(" T(%ld,%ld)\n", s0, s1); e3ec4a4e8733d5 Paul E. McKenney 2022-01-24 1457 smp_store_release(&ssp->srcu_size_state, SRCU_SIZE_ALLOC); // @@@ 115a1a5285664f Paul E. McKenney 2017-05-22 1458 } --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org _______________________________________________ kbuild mailing list -- kbuild@lists.01.org To unsubscribe send an email to kbuild-leave@lists.01.org