drivers/scsi/.tmp_esp_scsi.o: warning: objtool: scsi_esp_intr()+0x9f9: sibling call from callable instruction with modified stack frame

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   d517bb79f4994a87cfc2ddd4cc76bd1a627d4bed
commit: 2a0098d70640dda192a79966c14d449e7a34d675 objtool: Fix seg fault with gold linker
date:   5 days ago
config: x86_64-randconfig-v0-01211536 (attached as .config)
compiler: gcc-7 (Debian 7.2.0-12) 7.2.1 20171025
reproduce:
        git checkout 2a0098d70640dda192a79966c14d449e7a34d675
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

   Cyclomatic Complexity 1 include/linux/log2.h:__ilog2_u64
   Cyclomatic Complexity 1 include/linux/list.h:INIT_LIST_HEAD
   Cyclomatic Complexity 1 include/linux/list.h:__list_del
   Cyclomatic Complexity 1 include/linux/list.h:list_empty
   Cyclomatic Complexity 1 include/asm-generic/getorder.h:__get_order
   Cyclomatic Complexity 3 include/linux/string.h:memset
   Cyclomatic Complexity 4 include/linux/string.h:memcpy
   Cyclomatic Complexity 1 include/linux/spinlock.h:spinlock_check
   Cyclomatic Complexity 1 include/linux/spinlock.h:spin_unlock_irqrestore
   Cyclomatic Complexity 1 include/linux/slab.h:kmalloc_order_trace
   Cyclomatic Complexity 68 include/linux/slab.h:kmalloc_large
   Cyclomatic Complexity 3 include/linux/slab.h:kmalloc
   Cyclomatic Complexity 1 include/linux/slab.h:kzalloc
   Cyclomatic Complexity 1 include/scsi/scsi_host.h:shost_priv
   Cyclomatic Complexity 1 include/scsi/scsi_cmnd.h:scsi_sg_count
   Cyclomatic Complexity 1 include/scsi/scsi_cmnd.h:scsi_sglist
   Cyclomatic Complexity 1 drivers/scsi/esp_scsi.c:esp_log_fill_regs
   Cyclomatic Complexity 1 drivers/scsi/esp_scsi.c:esp_event
   Cyclomatic Complexity 2 drivers/scsi/esp_scsi.c:esp_set_all_config3
   Cyclomatic Complexity 3 drivers/scsi/esp_scsi.c:esp_map_dma
   Cyclomatic Complexity 2 drivers/scsi/esp_scsi.c:esp_cur_dma_addr
   Cyclomatic Complexity 2 drivers/scsi/esp_scsi.c:esp_cur_dma_len
   Cyclomatic Complexity 2 drivers/scsi/esp_scsi.c:esp_unmap_dma
   Cyclomatic Complexity 2 drivers/scsi/esp_scsi.c:esp_save_pointers
   Cyclomatic Complexity 2 drivers/scsi/esp_scsi.c:esp_restore_pointers
   Cyclomatic Complexity 3 drivers/scsi/esp_scsi.c:esp_check_command_len
   Cyclomatic Complexity 3 drivers/scsi/esp_scsi.c:esp_write_tgt_config3
   Cyclomatic Complexity 3 drivers/scsi/esp_scsi.c:esp_write_tgt_sync
   Cyclomatic Complexity 5 drivers/scsi/esp_scsi.c:esp_dma_length_limit
   Cyclomatic Complexity 1 drivers/scsi/esp_scsi.c:esp_need_to_nego_wide
   Cyclomatic Complexity 5 drivers/scsi/esp_scsi.c:esp_need_to_nego_sync
   Cyclomatic Complexity 1 drivers/scsi/esp_scsi.c:compose_result
   Cyclomatic Complexity 5 drivers/scsi/esp_scsi.c:esp_get_revision
   Cyclomatic Complexity 2 drivers/scsi/esp_scsi.c:esp_init_swstate
   Cyclomatic Complexity 5 drivers/scsi/esp_scsi.c:esp_set_clock_params
   Cyclomatic Complexity 3 drivers/scsi/esp_scsi.c:esp_slave_alloc
   Cyclomatic Complexity 1 drivers/scsi/esp_scsi.c:esp_info
   Cyclomatic Complexity 2 drivers/scsi/esp_scsi.c:esp_get_signalling
   Cyclomatic Complexity 2 drivers/scsi/esp_scsi.c:scsi_esp_cmd
   Cyclomatic Complexity 3 drivers/scsi/esp_scsi.c:hme_read_fifo
   Cyclomatic Complexity 4 drivers/scsi/esp_scsi.c:esp_send_dma_cmd
   Cyclomatic Complexity 2 drivers/scsi/esp_scsi.c:esp_check_gross_error
   Cyclomatic Complexity 5 drivers/scsi/esp_scsi.c:esp_check_spur_intr
   Cyclomatic Complexity 3 drivers/scsi/esp_scsi.c:esp_dump_cmd_log
   Cyclomatic Complexity 5 drivers/scsi/esp_scsi.c:esp_autosense
   Cyclomatic Complexity 6 drivers/scsi/esp_scsi.c:esp_advance_dma
   Cyclomatic Complexity 1 drivers/scsi/esp_scsi.c:esp_clear_hold
   Cyclomatic Complexity 2 drivers/scsi/esp_scsi.c:esp_free_lun_tag
   Cyclomatic Complexity 8 drivers/scsi/esp_scsi.c:esp_alloc_lun_tag
   Cyclomatic Complexity 2 include/linux/list.h:__list_del_entry
   Cyclomatic Complexity 1 include/linux/list.h:list_del
   Cyclomatic Complexity 2 include/linux/list.h:__list_add
   Cyclomatic Complexity 1 include/linux/list.h:list_add
   Cyclomatic Complexity 1 drivers/scsi/esp_scsi.c:esp_put_ent
   Cyclomatic Complexity 2 drivers/scsi/esp_scsi.c:esp_reset_cleanup_one
   Cyclomatic Complexity 12 drivers/scsi/esp_scsi.c:esp_reset_cleanup
   Cyclomatic Complexity 1 include/linux/list.h:list_move
   Cyclomatic Complexity 1 include/linux/list.h:list_add_tail
   Cyclomatic Complexity 2 drivers/scsi/esp_scsi.c:esp_schedule_reset
   Cyclomatic Complexity 16 drivers/scsi/esp_scsi.c:esp_reconnect_with_tag
   Cyclomatic Complexity 11 drivers/scsi/esp_scsi.c:esp_reconnect
   Cyclomatic Complexity 4 drivers/scsi/esp_scsi.c:esp_flush_fifo
   Cyclomatic Complexity 16 drivers/scsi/esp_scsi.c:esp_reset_esp
   Cyclomatic Complexity 1 drivers/scsi/esp_scsi.c:esp_bootup_reset
   Cyclomatic Complexity 6 drivers/scsi/esp_scsi.c:esp_msgin_wdtr
   Cyclomatic Complexity 7 drivers/scsi/esp_scsi.c:find_and_prep_issuable_command
   Cyclomatic Complexity 27 drivers/scsi/esp_scsi.c:esp_maybe_execute_command
   Cyclomatic Complexity 5 drivers/scsi/esp_scsi.c:esp_cmd_is_done
   Cyclomatic Complexity 10 drivers/scsi/esp_scsi.c:esp_finish_select
   Cyclomatic Complexity 19 drivers/scsi/esp_scsi.c:esp_data_bytes_sent
   Cyclomatic Complexity 1 drivers/scsi/esp_scsi.c:esp_event_queue_full
   Cyclomatic Complexity 6 drivers/scsi/esp_scsi.c:esp_setsync
   Cyclomatic Complexity 9 drivers/scsi/esp_scsi.c:esp_msgin_sdtr
   Cyclomatic Complexity 3 drivers/scsi/esp_scsi.c:esp_msgin_extended
   Cyclomatic Complexity 4 drivers/scsi/esp_scsi.c:esp_msgin_reject
   Cyclomatic Complexity 14 drivers/scsi/esp_scsi.c:esp_msgin_process
   Cyclomatic Complexity 64 drivers/scsi/esp_scsi.c:esp_process_event
   Cyclomatic Complexity 22 drivers/scsi/esp_scsi.c:__esp_interrupt
   Cyclomatic Complexity 6 drivers/scsi/esp_scsi.c:scsi_esp_intr
   Cyclomatic Complexity 1 include/linux/delay.h:ssleep
   Cyclomatic Complexity 1 drivers/scsi/esp_scsi.c:esp_eh_host_reset_handler
   Cyclomatic Complexity 1 include/scsi/scsi_host.h:scsi_add_host
   Cyclomatic Complexity 3 drivers/scsi/esp_scsi.c:scsi_esp_register
   Cyclomatic Complexity 1 drivers/scsi/esp_scsi.c:scsi_esp_unregister
   Cyclomatic Complexity 4 include/scsi/scsi_host.h:dev_to_shost
   Cyclomatic Complexity 1 drivers/scsi/esp_scsi.c:esp_target_destroy
   Cyclomatic Complexity 1 drivers/scsi/esp_scsi.c:esp_target_alloc
   Cyclomatic Complexity 1 drivers/scsi/esp_scsi.c:esp_set_width
   Cyclomatic Complexity 2 drivers/scsi/esp_scsi.c:esp_set_offset
   Cyclomatic Complexity 1 drivers/scsi/esp_scsi.c:esp_set_period
   Cyclomatic Complexity 1 drivers/scsi/esp_scsi.c:esp_slave_destroy
   Cyclomatic Complexity 3 drivers/scsi/esp_scsi.c:esp_slave_configure
   Cyclomatic Complexity 1 include/linux/completion.h:__init_completion
   Cyclomatic Complexity 2 drivers/scsi/esp_scsi.c:esp_eh_bus_reset_handler
   Cyclomatic Complexity 17 drivers/scsi/esp_scsi.c:esp_eh_abort_handler
   Cyclomatic Complexity 3 drivers/scsi/esp_scsi.c:esp_get_ent
   Cyclomatic Complexity 2 drivers/scsi/esp_scsi.c:esp_queuecommand_lck
   Cyclomatic Complexity 1 drivers/scsi/esp_scsi.c:esp_queuecommand
   Cyclomatic Complexity 1 drivers/scsi/esp_scsi.c:esp_exit
   Cyclomatic Complexity 3 drivers/scsi/esp_scsi.c:esp_init
>> drivers/scsi/.tmp_esp_scsi.o: warning: objtool: scsi_esp_intr()+0x9f9: sibling call from callable instruction with modified stack frame

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