hello,
i found two tests failed while i did "sudo ./perf test" ---------------------------------------------------------------------------> 24: Object code reading : FAILED! 64: probe libc's inet_pton & backtrace it with ping : FAILED! ----------------------------------------------------------------------------> some relevent shell session details from ./sudo perf test -vv 24 --------------------------------------------------------------------------------------------------------> Objdump command is: objdump -z -d --start-address=0xffffffff8132dda7 --stop-address=0xffffffff8132de27 /lib/modules/4.17.0-rc5+/build/vmlinux Bytes read match those read by objdump Reading object code for memory address: 0xfffffe000005e01e thread__find_addr_map failed test child finished with -1 ---- end ---- Object code reading: FAILED! ----------------------------------------------------------------------------------------------------------> $sudo ./perf test -vv 64 64: probe libc's inet_pton & backtrace it with ping : --- start --- test child forked, pid 4751 test child finished with -1 ---- end ---- probe libc's inet_pton & backtrace it with ping: FAILED! $ -----------------------------------------------------------------------------------------------------------> $awk -f scripts/ver_linux If some fields are empty or look unusual you may have an old version. Compare to the current minimal requirements in Documentation/Changes. Linux debian 4.17.0-rc5+ #30 SMP Sat May 19 19:59:08 IST 2018 x86_64 GNU/Linux GNU Make 4.2.1 Binutils 2.30 Util-linux 2.32 Mount 2.32 Linux C Library 2.27 Dynamic linker (ldd) 2.27 readlink: missing operand Try 'readlink --help' for more information. Procps 3.3.14 Kbd 2.0.4 Console-tools 2.0.4 Sh-utils 8.28 Udev 238 Modules Loaded ac acpi_pad acpi_thermal_rel ahci autofs4 battery binfmt_misc bluetooth bnep btbcm btintel btrtl btusb button cdrom cfg80211 cmac coretemp crc32c_intel crc32_pclmul crct10dif_pclmul cryptd drm drm_kms_helper ecdh_generic efi_pstore efivarfs efivars ehci_hcd ehci_pci evdev fan fat fuse ghash_clmulni_intel hid hp_wireless hp_wmi i2c_algo_bit i2c_hid i2c_i801 i915 int3400_thermal int340x_thermal_zone intel_cstate intel_pch_thermal intel_powerclamp intel_rapl intel_rapl_perf intel_soc_dts_iosf intel_uncore ip_tables irqbypass iTCO_vendor_support iTCO_wdt joydev kvm kvm_intel libahci libata loop lp lpc_ich media mei mei_me mfd_core mii nls_ascii nls_cp437 parport parport_pc pcspkr ppdev processor_thermal_device psmouse r8169 rfcomm rfkill scsi_mod sd_mod serio_raw sg shpchp snd snd_hda_codec snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_core snd_hda_intel snd_hwdep snd_pcm snd_timer soundcore sparse_keymap sr_mod sunrpc thermal usbcore uvcvideo vfat video videobuf2_common videobuf2_memops videobuf2_v4l2 videobuf2_vmalloc videodev wl wmi wmi_bmof x86_pkg_temp_thermal xhci_hcd xhci_pci x_tables $ -- software engineer rajagiri school of engineering and technology