[linux-stable-rc:linux-5.4.y 2066/5257] ubsan.c:undefined reference to `__ashlti3'

[linux-stable-rc:linux-5.4.y 2066/5257] ubsan.c:undefined reference to `__ashlti3'

[kbuild test robot]

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Hi Kefeng,

It's probably a bug fix that unveils the link errors.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.4.y
head:   cac6eb2794c85e7777fb0caac6fa75b6364d81a0
commit: 1865d6440fb63ad979d7034b2d7c94937bfd2200 [2066/5257] PCI: mobiveil: Fix csr_read()/write() build issue
config: riscv-allyesconfig (attached as .config)
compiler: riscv64-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 1865d6440fb63ad979d7034b2d7c94937bfd2200
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv 

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

All errors (new ones prefixed by >>, old ones prefixed by <<):

riscv64-linux-ld: lib/ubsan.o: in function `.L2':
>> ubsan.c:(.text.unlikely+0x38): undefined reference to `__ashlti3'
>> riscv64-linux-ld: ubsan.c:(.text.unlikely+0x42): undefined reference to `__ashrti3'

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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Re: [linux-stable-rc:linux-5.4.y 2066/5257] ubsan.c:undefined reference to `__ashlti3'

[Kefeng Wang]

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On 2020/5/20 14:54, kbuild test robot wrote:
> Hi Kefeng,
>
> It's probably a bug fix that unveils the link errors.
>
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.4.y
> head:   cac6eb2794c85e7777fb0caac6fa75b6364d81a0
> commit: 1865d6440fb63ad979d7034b2d7c94937bfd2200 [2066/5257] PCI: mobiveil: Fix csr_read()/write() build issue
> config: riscv-allyesconfig (attached as .config)
> compiler: riscv64-linux-gcc (GCC) 9.3.0
> reproduce:
>          wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>          chmod +x ~/bin/make.cross
>          git checkout 1865d6440fb63ad979d7034b2d7c94937bfd2200
>          # save the attached .config to linux build tree
>          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kbuild test robot <lkp@intel.com>
>
> All errors (new ones prefixed by >>, old ones prefixed by <<):
>
> riscv64-linux-ld: lib/ubsan.o: in function `.L2':
>>> ubsan.c:(.text.unlikely+0x38): undefined reference to `__ashlti3'
>>> riscv64-linux-ld: ubsan.c:(.text.unlikely+0x42): undefined reference to `__ashrti3'

My patch is irrelevant，it seems that the following patch fix build error.

commit fc585d4a5cf614727f64d86550b794bcad29d5c3
Author: Olof Johansson <olof@lixom.net>
Date:   Mon Dec 16 20:06:31 2019 -0800

     riscv: Less inefficient gcc tishift helpers (and export their symbols)


> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

Re: [linux-stable-rc:linux-5.4.y 2066/5257] ubsan.c:undefined reference to `__ashlti3'

[Philip Li]

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On Wed, May 20, 2020 at 08:34:23PM +0800, Kefeng Wang wrote:
> 
> On 2020/5/20 14:54, kbuild test robot wrote:
> > Hi Kefeng,
> > 
> > It's probably a bug fix that unveils the link errors.
> > 
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.4.y
> > head:   cac6eb2794c85e7777fb0caac6fa75b6364d81a0
> > commit: 1865d6440fb63ad979d7034b2d7c94937bfd2200 [2066/5257] PCI: mobiveil: Fix csr_read()/write() build issue
> > config: riscv-allyesconfig (attached as .config)
> > compiler: riscv64-linux-gcc (GCC) 9.3.0
> > reproduce:
> >          wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> >          chmod +x ~/bin/make.cross
> >          git checkout 1865d6440fb63ad979d7034b2d7c94937bfd2200
> >          # save the attached .config to linux build tree
> >          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv
> > 
> > If you fix the issue, kindly add following tag as appropriate
> > Reported-by: kbuild test robot <lkp@intel.com>
> > 
> > All errors (new ones prefixed by >>, old ones prefixed by <<):
> > 
> > riscv64-linux-ld: lib/ubsan.o: in function `.L2':
> > > > ubsan.c:(.text.unlikely+0x38): undefined reference to `__ashlti3'
> > > > riscv64-linux-ld: ubsan.c:(.text.unlikely+0x42): undefined reference to `__ashrti3'
> 
> My patch is irrelevant，it seems that the following patch fix build error.
thanks for the input, we will check this false positive. Sorry for
the noise.

> 
> commit fc585d4a5cf614727f64d86550b794bcad29d5c3
> Author: Olof Johansson <olof@lixom.net>
> Date:   Mon Dec 16 20:06:31 2019 -0800
> 
>     riscv: Less inefficient gcc tishift helpers (and export their symbols)
> 
> 
> > ---
> > 0-DAY CI Kernel Test Service, Intel Corporation
> > https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
> _______________________________________________
> kbuild-all mailing list -- kbuild-all(a)lists.01.org
> To unsubscribe send an email to kbuild-all-leave(a)lists.01.org

Re: [linux-stable-rc:linux-5.4.y 2066/5257] ubsan.c:undefined reference to `__ashlti3'

[Greg Kroah-Hartman]

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On Wed, May 20, 2020 at 08:34:23PM +0800, Kefeng Wang wrote:
> 
> On 2020/5/20 14:54, kbuild test robot wrote:
> > Hi Kefeng,
> > 
> > It's probably a bug fix that unveils the link errors.
> > 
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.4.y
> > head:   cac6eb2794c85e7777fb0caac6fa75b6364d81a0
> > commit: 1865d6440fb63ad979d7034b2d7c94937bfd2200 [2066/5257] PCI: mobiveil: Fix csr_read()/write() build issue
> > config: riscv-allyesconfig (attached as .config)
> > compiler: riscv64-linux-gcc (GCC) 9.3.0
> > reproduce:
> >          wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> >          chmod +x ~/bin/make.cross
> >          git checkout 1865d6440fb63ad979d7034b2d7c94937bfd2200
> >          # save the attached .config to linux build tree
> >          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv
> > 
> > If you fix the issue, kindly add following tag as appropriate
> > Reported-by: kbuild test robot <lkp@intel.com>
> > 
> > All errors (new ones prefixed by >>, old ones prefixed by <<):
> > 
> > riscv64-linux-ld: lib/ubsan.o: in function `.L2':
> > > > ubsan.c:(.text.unlikely+0x38): undefined reference to `__ashlti3'
> > > > riscv64-linux-ld: ubsan.c:(.text.unlikely+0x42): undefined reference to `__ashrti3'
> 
> My patch is irrelevant，it seems that the following patch fix build error.
> 
> commit fc585d4a5cf614727f64d86550b794bcad29d5c3
> Author: Olof Johansson <olof@lixom.net>
> Date:   Mon Dec 16 20:06:31 2019 -0800
> 
>     riscv: Less inefficient gcc tishift helpers (and export their symbols)

But this patch seems to cause issues:
	https://lore.kernel.org/r/80234d43-3848-45e8-6d70-1db94129e35f(a)roeck-us.net

so I'll go drop it now.

thanks,

greg k-h