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SubjectERROR: modpost: ".__warn_printk" undefined!
Hi Christoph,

First bad commit (maybe != root cause):

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 0e9bcda5d286f4a26a5407bb38f55c55b453ecfb
commit: a7b75c5a8c41445f33efb663887ff5f5c3b4454b net: pass a sockptr_t into ->setsockopt
date: 6 months ago
config: powerpc64-randconfig-c003-20210130 (attached as .config)
compiler: powerpc64-linux-gcc (GCC) 9.3.0
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/torvalds/linux.git/commit/?id=a7b75c5a8c41445f33efb663887ff5f5c3b4454b
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout a7b75c5a8c41445f33efb663887ff5f5c3b4454b
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=powerpc64

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 >>, old ones prefixed by <<):

ERROR: modpost: ".mutex_unlock" [net/wimax/wimax.ko] undefined!
ERROR: modpost: ".strcmp" [net/wimax/wimax.ko] undefined!
ERROR: modpost: ".netif_carrier_on" [net/wimax/wimax.ko] undefined!
ERROR: modpost: ".register_netdevice_notifier" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".__warn_printk" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_cmp4" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".netdev_warn" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".__ipv6_addr_type" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".sscanf" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".unregister_netdevice_notifier" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_cmp8" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_cmp1" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".memcmp" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: "._raw_spin_lock_bh" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".synchronize_net" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_const_cmp8" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".debugfs_create_file" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".single_open" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".addrconf_add_linklocal" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".skb_push" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".sprintf" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_switch" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".seq_puts" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_const_cmp2" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_pc" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".debugfs_remove" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".pskb_expand_head" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_const_cmp1" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".debugfs_create_dir" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_cmp2" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".seq_printf" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".rtnl_lock" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".__check_object_size" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".skb_pull" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".memcpy" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".memset" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: "._raw_spin_unlock_bh" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".rb_insert_color" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".unregister_netdevice_queue" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".__request_module" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".__pskb_pull_tail" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".__stack_chk_fail" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_const_cmp4" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".rb_erase" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".register_netdevice" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".rtnl_unlock" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: "._copy_from_user" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".simple_attr_open" [net/6lowpan/6lowpan.ko] undefined!
ERROR: modpost: ".sock_unregister" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".sock_register" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".skb_queue_head" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".mutex_unlock" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".skb_dequeue" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".skb_pull" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: "._copy_to_iter" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".mutex_lock" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".send_sig" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".sock_alloc_send_skb" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: "._copy_from_iter_full" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".skb_put" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".memcpy" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: "._copy_from_user" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".__check_object_size" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".refcount_warn_saturate" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".sk_free" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: "._raw_write_unlock_bh" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: "._raw_write_lock_bh" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".__wake_up" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".debugfs_remove" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: "._raw_spin_unlock_bh" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: "._raw_spin_lock_bh" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".prepare_to_wait" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".cfpkt_set_prio" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".cfpkt_fromnative" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".schedule_timeout" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".finish_wait" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".prepare_to_wait_event" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".init_wait_entry" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".caif_disconnect_client" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_const_cmp8" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".dev_get_by_index_rcu" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".caif_connect_client" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".__stack_chk_fail" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".skb_free_datagram" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".skb_copy_datagram_iter" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_cmp8" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".skb_recv_datagram" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".release_sock" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".__mutex_init" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".sock_init_data" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".lock_sock_nested" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".sk_alloc" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_const_cmp2" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".capable" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".__sk_mem_schedule" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: "._raw_spin_unlock_irqrestore" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: "._raw_spin_lock_irqsave" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".kfree_skb" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".sk_filter_trim_cap" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".cfpkt_tonative" [net/caif/caif_socket.ko] undefined!
>> ERROR: modpost: ".__warn_printk" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".printk" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".caif_free_client" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".sk_stream_kill_queues" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".caif_client_register_refcnt" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_switch" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_cmp4" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_const_cmp1" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_const_cmp4" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_pc" [net/caif/caif_socket.ko] undefined!
ERROR: modpost: ".register_netdevice_notifier" [net/caif/caif.ko] undefined!
ERROR: modpost: ".synchronize_rcu" [net/caif/caif.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_cmp4" [net/caif/caif.ko] undefined!
ERROR: modpost: ".kmem_cache_alloc_trace" [net/caif/caif.ko] undefined!
ERROR: modpost: ".snprintf" [net/caif/caif.ko] undefined!
ERROR: modpost: ".register_pernet_subsys" [net/caif/caif.ko] undefined!
ERROR: modpost: ".__mutex_init" [net/caif/caif.ko] undefined!
ERROR: modpost: ".strlen" [net/caif/caif.ko] undefined!
ERROR: modpost: ".free_percpu" [net/caif/caif.ko] undefined!
ERROR: modpost: ".unregister_netdevice_notifier" [net/caif/caif.ko] undefined!
ERROR: modpost: ".kfree_skb" [net/caif/caif.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_cmp1" [net/caif/caif.ko] undefined!
ERROR: modpost: ".__alloc_percpu" [net/caif/caif.ko] undefined!
ERROR: modpost: ".cpumask_next" [net/caif/caif.ko] undefined!
ERROR: modpost: ".memcmp" [net/caif/caif.ko] undefined!
ERROR: modpost: "._raw_spin_lock_bh" [net/caif/caif.ko] undefined!
ERROR: modpost: ".crc_ccitt" [net/caif/caif.ko] undefined!
ERROR: modpost: ".skb_trim" [net/caif/caif.ko] undefined!
ERROR: modpost: ".skb_push" [net/caif/caif.ko] undefined!
ERROR: modpost: ".mutex_lock" [net/caif/caif.ko] undefined!
ERROR: modpost: ".unregister_pernet_subsys" [net/caif/caif.ko] undefined!
ERROR: modpost: ".skb_put" [net/caif/caif.ko] undefined!
ERROR: modpost: ".arch_local_irq_restore" [net/caif/caif.ko] undefined!
ERROR: modpost: ".__list_add_valid" [net/caif/caif.ko] undefined!
ERROR: modpost: ".strlcpy" [net/caif/caif.ko] undefined!
ERROR: modpost: "._raw_spin_lock" [net/caif/caif.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_switch" [net/caif/caif.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_const_cmp2" [net/caif/caif.ko] undefined!
ERROR: modpost: ".__alloc_skb" [net/caif/caif.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_pc" [net/caif/caif.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_const_cmp1" [net/caif/caif.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_cmp2" [net/caif/caif.ko] undefined!
ERROR: modpost: ".dev_remove_pack" [net/caif/caif.ko] undefined!
ERROR: modpost: ".rtnl_lock" [net/caif/caif.ko] undefined!
ERROR: modpost: ".skb_pull" [net/caif/caif.ko] undefined!
ERROR: modpost: ".__local_bh_enable_ip" [net/caif/caif.ko] undefined!
ERROR: modpost: ".memcpy" [net/caif/caif.ko] undefined!
ERROR: modpost: ".memset" [net/caif/caif.ko] undefined!
ERROR: modpost: ".pskb_put" [net/caif/caif.ko] undefined!
ERROR: modpost: "._raw_spin_unlock_bh" [net/caif/caif.ko] undefined!
ERROR: modpost: ".skb_cow_data" [net/caif/caif.ko] undefined!
ERROR: modpost: ".printk" [net/caif/caif.ko] undefined!
ERROR: modpost: ".__pskb_pull_tail" [net/caif/caif.ko] undefined!
ERROR: modpost: ".__list_del_entry_valid" [net/caif/caif.ko] undefined!
ERROR: modpost: ".msleep" [net/caif/caif.ko] undefined!
ERROR: modpost: ".__stack_chk_fail" [net/caif/caif.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_const_cmp4" [net/caif/caif.ko] undefined!
ERROR: modpost: ".mutex_unlock" [net/caif/caif.ko] undefined!
ERROR: modpost: ".strcmp" [net/caif/caif.ko] undefined!
ERROR: modpost: ".___pskb_trim" [net/caif/caif.ko] undefined!
ERROR: modpost: ".dev_add_pack" [net/caif/caif.ko] undefined!
ERROR: modpost: ".rtnl_unlock" [net/caif/caif.ko] undefined!
ERROR: modpost: ".sg_init_table" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: "._raw_spin_unlock_irqrestore" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".p9_client_cb" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: "._dev_emerg" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_cmp4" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".kmem_cache_alloc_trace" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".p9_release_pages" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".strlen" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".iov_iter_get_pages_alloc" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".virtqueue_add_sgs" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".iov_iter_advance" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_cmp8" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".virtio_check_driver_offered_feature" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".unregister_virtio_driver" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".__init_waitqueue_head" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_const_cmp8" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".iov_iter_single_seg_count" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".sysfs_create_file_ns" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".finish_wait" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".virtqueue_get_buf" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".mutex_lock" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".__kmalloc" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".kvfree" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".prepare_to_wait_event" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".__list_add_valid" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".vmalloc_to_page" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_pc" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".schedule" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".__sanitizer_cov_trace_const_cmp1" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".sysfs_remove_file_ns" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".p9_req_put" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".kobject_uevent" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: "._raw_spin_lock_irqsave" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".is_vmalloc_addr" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".v9fs_unregister_trans" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".init_wait_entry" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".memcpy" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".__wake_up" [net/9p/9pnet_virtio.ko] undefined!
ERROR: modpost: ".nr_free_buffer_pages" [net/9p/9pnet_virtio.ko] undefined!

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