Darren, I looked through this and I think this is caused by dell-smbios-smm no longer being mandated as it's own module but dcdbas being allowed to be a module. The config that was selected had dcdbas as a module and dell-smbios compiled in. That particular configuration should be prevented I'm not sure how to express that in Kconfig though. Maybe:? config DELL_SMBIOS tristate "Dell SMBIOS driver" depends on DCDBAS || ACPI_WMI > -----Original Message----- > From: kbuild test robot [mailto:fengguang.wu@xxxxxxxxx] > Sent: Tuesday, March 6, 2018 1:21 PM > To: Limonciello, Mario <Mario_Limonciello@xxxxxxxx> > Cc: kbuild-all@xxxxxx; platform-driver-x86@xxxxxxxxxxxxxxx; Darren Hart > <dvhart@xxxxxxxxxxxxx>; Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> > Subject: [platform-drivers-x86:testing 4/5] drivers/platform/x86/dell-smbios- > smm.c:99: undefined reference to `dcdbas_smi_request' > > tree: git://git.infradead.org/users/dvhart/linux-platform-drivers-x86.git testing > head: c715e4345581bdb475ae4fb378a243aee72579ba > commit: 41e36f2f85af758fd2f4be76112ebe649d07a801 [4/5] platform/x86: dell- > smbios: Link all dell-smbios-* modules together > config: x86_64-randconfig-a0-03061102 (attached as .config) > compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 > reproduce: > git checkout 41e36f2f85af758fd2f4be76112ebe649d07a801 > # save the attached .config to linux build tree > make ARCH=x86_64 > > All errors (new ones prefixed by >>): > > drivers/platform/x86/dell-smbios-smm.o: In function `dell_smbios_smm_call': > >> drivers/platform/x86/dell-smbios-smm.c:99: undefined reference to > `dcdbas_smi_request' > > vim +99 drivers/platform/x86/dell-smbios-smm.c > > 549b4930 Mario Limonciello 2017-11-01 84 > 549b4930 Mario Limonciello 2017-11-01 85 int dell_smbios_smm_call(struct > calling_interface_buffer *input) > 549b4930 Mario Limonciello 2017-11-01 86 { > 549b4930 Mario Limonciello 2017-11-01 87 struct smi_cmd command; > 549b4930 Mario Limonciello 2017-11-01 88 size_t size; > 549b4930 Mario Limonciello 2017-11-01 89 > 549b4930 Mario Limonciello 2017-11-01 90 size = sizeof(struct > calling_interface_buffer); > 549b4930 Mario Limonciello 2017-11-01 91 command.magic = > SMI_CMD_MAGIC; > 549b4930 Mario Limonciello 2017-11-01 92 command.command_address = > da_command_address; > 549b4930 Mario Limonciello 2017-11-01 93 command.command_code = > da_command_code; > 549b4930 Mario Limonciello 2017-11-01 94 command.ebx = > virt_to_phys(buffer); > 549b4930 Mario Limonciello 2017-11-01 95 command.ecx = 0x42534931; > 549b4930 Mario Limonciello 2017-11-01 96 > 549b4930 Mario Limonciello 2017-11-01 97 mutex_lock(&smm_mutex); > 549b4930 Mario Limonciello 2017-11-01 98 memcpy(buffer, input, size); > 549b4930 Mario Limonciello 2017-11-01 @99 dcdbas_smi_request(&command); > 549b4930 Mario Limonciello 2017-11-01 100 memcpy(input, buffer, size); > 549b4930 Mario Limonciello 2017-11-01 101 mutex_unlock(&smm_mutex); > 549b4930 Mario Limonciello 2017-11-01 102 return 0; > 549b4930 Mario Limonciello 2017-11-01 103 } > 549b4930 Mario Limonciello 2017-11-01 104 > > :::::: The code at line 99 was first introduced by commit > :::::: 549b4930f057658dc50d8010e66219233119a4d8 platform/x86: dell-smbios: > Introduce dispatcher for SMM calls > > :::::: TO: Mario Limonciello <mario.limonciello@xxxxxxxx> > :::::: CC: Darren Hart (VMware) <dvhart@xxxxxxxxxxxxx> > > --- > 0-DAY kernel test infrastructure Open Source Technology Center > https://lists.01.org/pipermail/kbuild-all Intel Corporation