linux-kernel - [tip:efi/core 62/64] arch/x86/platform/efi/efi_64.c:560: undefined reference to `__efi64

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Date:   Tue, 21 Jan 2020 15:30:21 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Ard Biesheuvel <ardb@...nel.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        x86@...nel.org, Ingo Molnar <mingo@...nel.org>
Subject: [tip:efi/core 62/64] arch/x86/platform/efi/efi_64.c:560: undefined
 reference to `__efi64_thunk'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git efi/core
head:   615bf8d9a96b3695eb6bb9b35c2279f5a17fd8c3
commit: 3cc028619e284188cdde652631e1c3c5a83692b9 [62/64] efi/x86: avoid KASAN false positives when accessing the 1: 1 mapping
config: x86_64-randconfig-a002-20200120 (attached as .config)
compiler: gcc-4.9 (Debian 4.9.2-10+deb8u1) 4.9.2
reproduce:
        git checkout 3cc028619e284188cdde652631e1c3c5a83692b9
        # save the attached .config to linux build tree
        make ARCH=x86_64 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   ld: arch/x86/platform/efi/efi_64.o: in function `efi_thunk_set_virtual_address_map':
>> arch/x86/platform/efi/efi_64.c:560: undefined reference to `__efi64_thunk'
   ld: arch/x86/platform/efi/efi_64.o: in function `efi_set_virtual_address_map':
>> arch/x86/platform/efi/efi_64.c:902: undefined reference to `efi_uv1_memmap_phys_prolog'
>> ld: arch/x86/platform/efi/efi_64.c:921: undefined reference to `efi_uv1_memmap_phys_epilog'

vim +560 arch/x86/platform/efi/efi_64.c

4f9dbcfc40299d Matt Fleming   2014-01-10  545  
3cc028619e2841 Ard Biesheuvel 2020-01-18  546  static efi_status_t __init __no_sanitize_address
ea5e1919b44f09 Ard Biesheuvel 2020-01-03  547  efi_thunk_set_virtual_address_map(unsigned long memory_map_size,
4f9dbcfc40299d Matt Fleming   2014-01-10  548  				  unsigned long descriptor_size,
4f9dbcfc40299d Matt Fleming   2014-01-10  549  				  u32 descriptor_version,
4f9dbcfc40299d Matt Fleming   2014-01-10  550  				  efi_memory_desc_t *virtual_map)
4f9dbcfc40299d Matt Fleming   2014-01-10  551  {
4f9dbcfc40299d Matt Fleming   2014-01-10  552  	efi_status_t status;
4f9dbcfc40299d Matt Fleming   2014-01-10  553  	unsigned long flags;
4f9dbcfc40299d Matt Fleming   2014-01-10  554  
4f9dbcfc40299d Matt Fleming   2014-01-10  555  	efi_sync_low_kernel_mappings();
4f9dbcfc40299d Matt Fleming   2014-01-10  556  	local_irq_save(flags);
4f9dbcfc40299d Matt Fleming   2014-01-10  557  
03781e40890c18 Sai Praneeth   2018-03-12  558  	efi_switch_mm(&efi_mm);
4f9dbcfc40299d Matt Fleming   2014-01-10  559  
ea5e1919b44f09 Ard Biesheuvel 2020-01-03 @560  	status = __efi_thunk(set_virtual_address_map, memory_map_size,
ea5e1919b44f09 Ard Biesheuvel 2020-01-03  561  			     descriptor_size, descriptor_version, virtual_map);
4f9dbcfc40299d Matt Fleming   2014-01-10  562  
03781e40890c18 Sai Praneeth   2018-03-12  563  	efi_switch_mm(efi_scratch.prev_mm);
4f9dbcfc40299d Matt Fleming   2014-01-10  564  	local_irq_restore(flags);
4f9dbcfc40299d Matt Fleming   2014-01-10  565  
4f9dbcfc40299d Matt Fleming   2014-01-10  566  	return status;
4f9dbcfc40299d Matt Fleming   2014-01-10  567  }
4f9dbcfc40299d Matt Fleming   2014-01-10  568  

:::::: The code at line 560 was first introduced by commit
:::::: ea5e1919b44f09fce72d919fbb87f9611fc700a6 efi/x86: Simplify mixed mode call wrapper

:::::: TO: Ard Biesheuvel <ardb@...nel.org>
:::::: CC: Ingo Molnar <mingo@...nel.org>

---
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