tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
master
head:   9cb9c07d6b0c5fd97d83b8ab14d7e308ba4b612f
commit: 2a0098d70640dda192a79966c14d449e7a34d675 objtool: Fix seg fault with 
gold linker
date:   6 weeks ago
config: x86_64-randconfig-in0-02241612 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        git checkout 2a0098d70640dda192a79966c14d449e7a34d675
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

   Cyclomatic Complexity 5 include/linux/compiler.h:__write_once_size
   Cyclomatic Complexity 1 arch/x86/include/asm/bitops.h:fls64
   Cyclomatic Complexity 1 include/linux/log2.h:__ilog2_u64
   Cyclomatic Complexity 1 include/linux/list.h:INIT_LIST_HEAD
   Cyclomatic Complexity 1 include/asm-generic/getorder.h:__get_order
   Cyclomatic Complexity 1 include/linux/workqueue.h:__init_work
   Cyclomatic Complexity 28 include/linux/slab.h:kmalloc_index
   Cyclomatic Complexity 68 include/linux/slab.h:kmalloc_large
   Cyclomatic Complexity 5 include/linux/slab.h:kmalloc
   Cyclomatic Complexity 1 include/linux/slab.h:kzalloc
   Cyclomatic Complexity 1 include/linux/usb.h:usb_fill_bulk_urb
   Cyclomatic Complexity 1 include/linux/usb.h:__create_pipe
   Cyclomatic Complexity 1 
drivers/media/dvb-core/dvbdev.h:dvb_create_media_graph
   Cyclomatic Complexity 1 include/linux/workqueue.h:queue_work
   Cyclomatic Complexity 1 include/linux/workqueue.h:schedule_work
   Cyclomatic Complexity 2 
drivers/media/usb/au0828/au0828-dvb.c:au0828_bulk_timeout
   Cyclomatic Complexity 15 drivers/media/usb/au0828/au0828-dvb.c:dvb_register
   Cyclomatic Complexity 7 
drivers/media/usb/au0828/au0828-dvb.c:stop_urb_transfer
   Cyclomatic Complexity 2 
drivers/media/usb/au0828/au0828-dvb.c:au0828_stop_transport
   Cyclomatic Complexity 6 
drivers/media/usb/au0828/au0828-dvb.c:au0828_dvb_stop_feed
   Cyclomatic Complexity 1 
drivers/media/usb/au0828/au0828-dvb.c:au0828_start_transport
   Cyclomatic Complexity 10 
drivers/media/usb/au0828/au0828-dvb.c:start_urb_transfer
   Cyclomatic Complexity 7 
drivers/media/usb/au0828/au0828-dvb.c:au0828_dvb_start_feed
   Cyclomatic Complexity 3 
drivers/media/usb/au0828/au0828-dvb.c:au0828_set_frontend
   Cyclomatic Complexity 12 drivers/media/usb/au0828/au0828-dvb.c:urb_completion
   Cyclomatic Complexity 4 
drivers/media/usb/au0828/au0828-dvb.c:au0828_restart_dvb_streaming
   Cyclomatic Complexity 5 
drivers/media/usb/au0828/au0828-dvb.c:au0828_dvb_unregister
   Cyclomatic Complexity 32 
drivers/media/usb/au0828/au0828-dvb.c:au0828_dvb_register
   Cyclomatic Complexity 3 
drivers/media/usb/au0828/au0828-dvb.c:au0828_dvb_suspend
   Cyclomatic Complexity 3 
drivers/media/usb/au0828/au0828-dvb.c:au0828_dvb_resume
   Cyclomatic Complexity 1 
drivers/media/usb/au0828/au0828-dvb.c:_GLOBAL__sub_D_65535_0_au0828_dvb_unregister
   Cyclomatic Complexity 1 
drivers/media/usb/au0828/au0828-dvb.c:_GLOBAL__sub_I_65535_1_au0828_dvb_unregister
>> drivers/media/usb/au0828/.tmp_au0828-dvb.o: warning: objtool: 
>> au0828_dvb_register()+0xef: sibling call from callable instruction with 
>> modified stack frame

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