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@xxxxxxxxx/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@xxxxxxxxx/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 <lkp@xxxxxxxxx> > | Closes: https://lore.kernel.org/oe-kbuild-all/202312140939.zA3tdSi2-lkp@xxxxxxxxx/ > > 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? 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 <qiang.zhang@xxxxxxxxxxxxx> > :::::: CC: Paul E. McKenney <paulmck@xxxxxxxxxx> > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests/wiki
