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Subjectdrivers/media/usb/ttusb-dec/.tmp_ttusb_dec.o: warning: objtool: ttusb_dec_process_urb_frame_list()+0x114: sibling call from callable instruction with modified stack frame
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: dda3e15231b35840fe6f0973f803cc70ddb86281
commit: 2a0098d70640dda192a79966c14d449e7a34d675 objtool: Fix seg fault with gold linker
date: 3 days ago
config: x86_64-randconfig-r0-01190349 (attached as .config)
compiler: gcc-6 (Debian 6.4.0-9) 6.4.0 20171026
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 2 arch/x86/include/asm/bitops.h:set_bit
Cyclomatic Complexity 1 arch/x86/include/asm/bitops.h:test_and_set_bit
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/linux/list.h:__list_del
Cyclomatic Complexity 1 include/asm-generic/getorder.h:__get_order
Cyclomatic Complexity 1 arch/x86/include/asm/paravirt.h:arch_local_save_flags
Cyclomatic Complexity 1 arch/x86/include/asm/irqflags.h:arch_irqs_disabled_flags
Cyclomatic Complexity 1 include/linux/spinlock.h:spinlock_check
Cyclomatic Complexity 1 include/linux/spinlock.h:spin_unlock_irqrestore
Cyclomatic Complexity 1 include/linux/device.h:dev_get_drvdata
Cyclomatic Complexity 1 include/linux/device.h:dev_set_drvdata
Cyclomatic Complexity 1 include/linux/kasan.h:kasan_kmalloc
Cyclomatic Complexity 28 include/linux/slab.h:kmalloc_index
Cyclomatic Complexity 1 include/linux/slab.h:kmem_cache_alloc_trace
Cyclomatic Complexity 1 include/linux/slab.h:kmalloc_order_trace
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/dma-debug.h:debug_dma_alloc_coherent
Cyclomatic Complexity 1 include/linux/dma-debug.h:debug_dma_free_coherent
Cyclomatic Complexity 1 arch/x86/include/asm/dma-mapping.h:get_arch_dma_ops
Cyclomatic Complexity 4 include/linux/dma-mapping.h:get_dma_ops
Cyclomatic Complexity 1 include/linux/usb.h:usb_get_intfdata
Cyclomatic Complexity 1 include/linux/usb.h:usb_set_intfdata
Cyclomatic Complexity 2 include/linux/usb.h:usb_fill_int_urb
Cyclomatic Complexity 1 include/linux/usb.h:__create_pipe
Cyclomatic Complexity 1 drivers/media/usb/ttusb-dec/ttusb_dec.c:dvb_filter_pes2ts_init
Cyclomatic Complexity 2 drivers/media/usb/ttusb-dec/ttusb_dec.c:crc16
Cyclomatic Complexity 1 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_audio_pes2ts_cb
Cyclomatic Complexity 1 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_video_pes2ts_cb
Cyclomatic Complexity 2 drivers/media/usb/ttusb-dec/ttusb_dec.c:swap_bytes
Cyclomatic Complexity 4 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_set_model
Cyclomatic Complexity 4 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_setup_urbs
Cyclomatic Complexity 2 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_init_v_pes
Cyclomatic Complexity 2 include/linux/list.h:__list_del_entry
Cyclomatic Complexity 1 include/linux/list.h:list_del
Cyclomatic Complexity 3 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_exit_tasklet
Cyclomatic Complexity 3 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_exit_filters
Cyclomatic Complexity 3 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_exit_rc
Cyclomatic Complexity 4 include/linux/dma-mapping.h:dma_free_attrs
Cyclomatic Complexity 1 include/linux/dma-mapping.h:dma_free_coherent
Cyclomatic Complexity 2 include/linux/pci-dma-compat.h:pci_free_consistent
Cyclomatic Complexity 3 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_free_iso_urbs
Cyclomatic Complexity 5 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_exit_usb
Cyclomatic Complexity 4 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_exit_dvb
Cyclomatic Complexity 4 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_disconnect
Cyclomatic Complexity 12 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_send_command
Cyclomatic Complexity 1 drivers/media/usb/ttusb-dec/ttusb_dec.c:fe_send_command
Cyclomatic Complexity 5 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_stop_iso_xfer
Cyclomatic Complexity 1 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_stop_ts_feed
Cyclomatic Complexity 1 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_stop_sec_feed
Cyclomatic Complexity 4 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_stop_feed
Cyclomatic Complexity 2 include/linux/usb.h:interface_to_usbdev
Cyclomatic Complexity 7 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_start_iso_xfer
Cyclomatic Complexity 1 include/linux/input.h:input_report_key
Cyclomatic Complexity 1 include/linux/input.h:input_sync
Cyclomatic Complexity 10 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_handle_irq
Cyclomatic Complexity 3 include/linux/dma-mapping.h:dma_alloc_attrs
Cyclomatic Complexity 1 include/linux/dma-mapping.h:dma_alloc_coherent
Cyclomatic Complexity 1 include/linux/dma-mapping.h:dma_zalloc_coherent
Cyclomatic Complexity 2 include/linux/pci-dma-compat.h:pci_zalloc_consistent
Cyclomatic Complexity 6 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_alloc_iso_urbs
Cyclomatic Complexity 6 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_init_usb
Cyclomatic Complexity 2 include/linux/list.h:__list_add
Cyclomatic Complexity 1 include/linux/list.h:list_add_tail
Cyclomatic Complexity 2 include/linux/interrupt.h:tasklet_schedule
Cyclomatic Complexity 7 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_process_urb
Cyclomatic Complexity 7 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_get_stb_state
Cyclomatic Complexity 11 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_boot_dsp
Cyclomatic Complexity 10 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_init_stb
Cyclomatic Complexity 2 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_set_pids
Cyclomatic Complexity 22 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_start_ts_feed
Cyclomatic Complexity 5 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_start_sec_feed
Cyclomatic Complexity 7 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_start_feed
Cyclomatic Complexity 7 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_init_dvb
Cyclomatic Complexity 1 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_init_filters
Cyclomatic Complexity 1 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_init_tasklet
Cyclomatic Complexity 7 drivers/media/usb/ttusb-dec/ttusb_dec.c:dvb_filter_pes2ts
Cyclomatic Complexity 14 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_process_pva
Cyclomatic Complexity 5 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_process_filter
Cyclomatic Complexity 11 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_process_packet
Cyclomatic Complexity 23 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_process_urb_frame
Cyclomatic Complexity 3 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_process_urb_frame_list
Cyclomatic Complexity 7 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_set_interface
Cyclomatic Complexity 2 include/linux/usb.h:usb_make_path
Cyclomatic Complexity 5 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_init_rc
Cyclomatic Complexity 15 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_probe
Cyclomatic Complexity 1 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_driver_init
Cyclomatic Complexity 1 drivers/media/usb/ttusb-dec/ttusb_dec.c:ttusb_dec_driver_exit
>> drivers/media/usb/ttusb-dec/.tmp_ttusb_dec.o: warning: objtool: ttusb_dec_process_urb_frame_list()+0x114: sibling call from callable instruction with modified stack frame

---
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https://lists.01.org/pipermail/kbuild-all Intel Corporation
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