tree:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git for-next
head:   35cba2988fc65239d10566edc03cc0978382c25f
commit: 33c5cb36015ac1034b50b823fae367e908d05147 [1055/1059] bpf: Consolidate task_struct BTF_ID declarations
config: s390-randconfig-c024-20210825 (attached as .config)
compiler: s390-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/commit/?id=33c5cb36015ac1034b50b823fae367e908d05147
        git remote add bpf-next https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git
        git fetch --no-tags bpf-next for-next
        git checkout 33c5cb36015ac1034b50b823fae367e908d05147
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=s390 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   s390-linux-ld: kernel/dma/coherent.o: in function `dma_init_coherent_memory':
   coherent.c:(.text+0x5ac): undefined reference to `memremap'
   s390-linux-ld: coherent.c:(.text+0x7b6): undefined reference to `memunmap'
   s390-linux-ld: kernel/dma/coherent.o: in function `dma_declare_coherent_memory':
   coherent.c:(.text+0xf32): undefined reference to `memunmap'
   s390-linux-ld: kernel/bpf/task_iter.o: in function `task_iter_init':
   task_iter.c:(.init.text+0x1c): undefined reference to `btf_task_struct_ids'
>> s390-linux-ld: task_iter.c:(.init.text+0xa4): undefined reference to `btf_task_struct_ids'
   s390-linux-ld: task_iter.c:(.init.text+0x126): undefined reference to `btf_task_struct_ids'
>> s390-linux-ld: kernel/bpf/bpf_task_storage.o:(.rodata+0x168): undefined reference to `btf_task_struct_ids'
   s390-linux-ld: kernel/bpf/bpf_task_storage.o:(.rodata+0x1c8): undefined reference to `btf_task_struct_ids'
   s390-linux-ld: kernel/bpf/stackmap.o:(.rodata+0x3d8): more undefined references to `btf_task_struct_ids' follow
   s390-linux-ld: drivers/irqchip/irq-al-fic.o: in function `al_fic_init_dt':
   irq-al-fic.c:(.init.text+0xa8): undefined reference to `of_iomap'
   s390-linux-ld: irq-al-fic.c:(.init.text+0x3ee): undefined reference to `iounmap'
   s390-linux-ld: drivers/crypto/ccree/cc_driver.o: in function `init_cc_resources':
   cc_driver.c:(.text+0xb68): undefined reference to `devm_ioremap_resource'
   s390-linux-ld: drivers/crypto/ccree/cc_debugfs.o: in function `cc_debugfs_init':
   cc_debugfs.c:(.text+0x118): undefined reference to `debugfs_create_regset32'
   s390-linux-ld: cc_debugfs.c:(.text+0x26a): undefined reference to `debugfs_create_regset32'

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org