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McKenney" CC: kernel test robot , , "Linux Memory Management List" , "Neeraj Upadhyay (AMD)" , "Joel Fernandes (Google)" Subject: Re: [linux-next:master 6386/7300] kernel/rcu/tree.c:2965:(.text+0x5b44): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table' Message-ID: References: <202312140939.zA3tdSi2-lkp@intel.com> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: X-ClientProxiedBy: SGXP274CA0006.SGPP274.PROD.OUTLOOK.COM (2603:1096:4:b8::18) To CY5PR11MB6392.namprd11.prod.outlook.com (2603:10b6:930:37::15) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY5PR11MB6392:EE_|CH0PR11MB5218:EE_ X-MS-Office365-Filtering-Correlation-Id: 886d7b6f-f804-41ee-5858-08dbff6b2cfb 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:CY5PR11MB6392.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(7916004)(346002)(376002)(366004)(136003)(39860400002)(396003)(230922051799003)(1800799012)(451199024)(186009)(64100799003)(26005)(6666004)(6512007)(9686003)(6506007)(83380400001)(5660300002)(44832011)(41300700001)(966005)(2906002)(33716001)(478600001)(316002)(54906003)(4326008)(8676002)(8936002)(66946007)(66556008)(6486002)(66476007)(6916009)(82960400001)(86362001)(38100700002);DIR:OUT;SFP:1102; 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McKenney wrote: > On Thu, Dec 14, 2023 at 09:25:29AM +0800, kernel test robot wrote: > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > > head: 48e8992e33abf054bcc0bb2e77b2d43bb899212e > > commit: 4e58aaeebb3c27993c734c99eae6881b196b1ddb [6386/7300] rcu: Restrict access to RCU CPU stall notifiers > > config: csky-randconfig-r013-20230826 (https://download.01.org/0day-ci/archive/20231214/202312140939.zA3tdSi2-lkp@intel.com/config) > > compiler: csky-linux-gcc (GCC) 13.2.0 > > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231214/202312140939.zA3tdSi2-lkp@intel.com/reproduce) > > > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > > the same patch/commit), kindly add following tags > > | Reported-by: kernel test robot > > | Closes: https://lore.kernel.org/oe-kbuild-all/202312140939.zA3tdSi2-lkp@intel.com/ > > > > All errors (new ones prefixed by >>): > > > > kernel/rcu/tree.o: in function `drain_page_cache': > > >> kernel/rcu/tree.c:2965:(.text+0x5b44): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table' > > I have questions. ;-) > > Is this something that I need to fix, or is this a problem with the > csky toolchain? If it is something that I need to fix, how exactly do > I fix it? This seems to be a general problem with csky arch and it is not caused by the rcu patch. Please kindly ignore this report and we've configured the bot to skip it. FYI, some similar cases: [1] https://lore.kernel.org/oe-kbuild-all/ZX0Vv3IyOi+Bp10Q@casper.infradead.org/ [2] https://lore.kernel.org/oe-kbuild-all/202312152147.JntukftP-lkp@intel.com/ [3] https://lore.kernel.org/oe-kbuild-all/202312160759.X3dEVpgd-lkp@intel.com/ Best Regards, Yujie > > Thanx, Paul > > > kernel/rcu/tree.c:2968:(.text+0x5b5c): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table' > > kernel/rcu/tree.o: in function `kfree_rcu_shrink_scan': > > kernel/rcu/tree.c:3476:(.text+0x5b6a): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table' > > kernel/rcu/tree.o: in function `rcu_do_batch': > > kernel/rcu/tree.c:2102:(.text+0x5be6): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table' > > kernel/rcu/tree.c:2117:(.text+0x5c06): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table' > > kernel/rcu/tree.c:2119:(.text+0x5c22): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table' > > kernel/rcu/tree.c:2135:(.text+0x5c66): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table' > > kernel/rcu/tree.c:2144:(.text+0x5ca2): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table' > > kernel/rcu/tree.o: in function `rcu_lock_acquire': > > >> include/linux/rcupdate.h:301:(.text+0x5cb2): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table' > > include/linux/rcupdate.h:301:(.text+0x5cce): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table' > > kernel/rcu/tree.o: in function `rcu_lock_release': > > include/linux/rcupdate.h:306:(.text+0x5cee): additional relocation overflows omitted from the output > > > > > > vim +2965 kernel/rcu/tree.c > > > > 53c72b590b3a0a Uladzislau Rezki (Sony 2020-05-25 2951) > > d0bfa8b3c411e2 Zhang Qiang 2021-04-15 2952 static int > > d0bfa8b3c411e2 Zhang Qiang 2021-04-15 2953 drain_page_cache(struct kfree_rcu_cpu *krcp) > > d0bfa8b3c411e2 Zhang Qiang 2021-04-15 2954 { > > d0bfa8b3c411e2 Zhang Qiang 2021-04-15 2955 unsigned long flags; > > d0bfa8b3c411e2 Zhang Qiang 2021-04-15 2956 struct llist_node *page_list, *pos, *n; > > d0bfa8b3c411e2 Zhang Qiang 2021-04-15 2957 int freed = 0; > > 53c72b590b3a0a Uladzislau Rezki (Sony 2020-05-25 2958) > > 6b706e5603c44f Zqiang 2023-04-18 2959 if (!rcu_min_cached_objs) > > 6b706e5603c44f Zqiang 2023-04-18 2960 return 0; > > 6b706e5603c44f Zqiang 2023-04-18 2961 > > d0bfa8b3c411e2 Zhang Qiang 2021-04-15 2962 raw_spin_lock_irqsave(&krcp->lock, flags); > > d0bfa8b3c411e2 Zhang Qiang 2021-04-15 2963 page_list = llist_del_all(&krcp->bkvcache); > > ac7625ebd5f7ba Uladzislau Rezki (Sony 2021-04-15 2964) WRITE_ONCE(krcp->nr_bkv_objs, 0); > > d0bfa8b3c411e2 Zhang Qiang 2021-04-15 @2965 raw_spin_unlock_irqrestore(&krcp->lock, flags); > > d0bfa8b3c411e2 Zhang Qiang 2021-04-15 2966 > > d0bfa8b3c411e2 Zhang Qiang 2021-04-15 2967 llist_for_each_safe(pos, n, page_list) { > > d0bfa8b3c411e2 Zhang Qiang 2021-04-15 2968 free_page((unsigned long)pos); > > d0bfa8b3c411e2 Zhang Qiang 2021-04-15 2969 freed++; > > d0bfa8b3c411e2 Zhang Qiang 2021-04-15 2970 } > > 53c72b590b3a0a Uladzislau Rezki (Sony 2020-05-25 2971) > > d0bfa8b3c411e2 Zhang Qiang 2021-04-15 2972 return freed; > > 53c72b590b3a0a Uladzislau Rezki (Sony 2020-05-25 2973) } > > 53c72b590b3a0a Uladzislau Rezki (Sony 2020-05-25 2974) > > > > :::::: The code at line 2965 was first introduced by commit > > :::::: d0bfa8b3c411e25e014e4131d2804afe29c440a6 kvfree_rcu: Release a page cache under memory pressure > > > > :::::: TO: Zhang Qiang > > :::::: CC: Paul E. McKenney > > > > -- > > 0-DAY CI Kernel Test Service > > https://github.com/intel/lkp-tests/wiki >