linux-kernel - Re: [PATCH v4.16-rc5 1/1] x86/vdso: VDSO should handle clock_gettime(CLOCK_MONOTONIC

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Date:   Sat, 17 Mar 2018 12:00:44 +0800
From:   kbuild test robot <lkp@...el.com>
To:     jason.vas.dias@...il.com
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org, x86@...nel.org,
        tglx@...utronix.de, mingo@...nel.org, peterz@...radead.org,
        andi@...stfloor.org
Subject: Re: [PATCH v4.16-rc5 1/1] x86/vdso: VDSO should handle
 clock_gettime(CLOCK_MONOTONIC_RAW) without syscall

Hi,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on v4.16-rc4]
[also build test ERROR on next-20180316]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/jason-vas-dias-gmail-com/x86-vdso-VDSO-should-handle-clock_gettime-CLOCK_MONOTONIC_RAW-without-syscall/20180317-101131
config: x86_64-kexec (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   arch/x86//entry/vdso/vclock_gettime.o: In function `__vdso_clock_gettime':
   vclock_gettime.c:(.text+0xe6): undefined reference to `__x86_indirect_thunk_rax'
   /usr/bin/ld: arch/x86//entry/vdso/vclock_gettime.o: relocation R_X86_64_PC32 against undefined symbol `__x86_indirect_thunk_rax' can not be used when making a shared object; recompile with -fPIC
   /usr/bin/ld: final link failed: Bad value
>> collect2: error: ld returned 1 exit status
--
>> objcopy: 'arch/x86//entry/vdso/vdso64.so.dbg': No such file
--
>> arch/x86//entry/vdso/vdso32.so.dbg: undefined symbols found
--
   arch/x86/entry/vdso/vclock_gettime.o: In function `__vdso_clock_gettime':
   vclock_gettime.c:(.text+0xe6): undefined reference to `__x86_indirect_thunk_rax'
   /usr/bin/ld: arch/x86/entry/vdso/vclock_gettime.o: relocation R_X86_64_PC32 against undefined symbol `__x86_indirect_thunk_rax' can not be used when making a shared object; recompile with -fPIC
   /usr/bin/ld: final link failed: Bad value
>> collect2: error: ld returned 1 exit status

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0-DAY kernel test infrastructure                Open Source Technology Center
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