drivers/infiniband/core/.tmp_gl_uverbs_main.o:undefined reference to `__user_bad'

drivers/infiniband/core/.tmp_gl_uverbs_main.o:undefined reference to `__user_bad'

[kbuild test robot]

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Hi Masahiro,

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   1bdbe227492075d058e37cb3d400e6468d0095b5
commit: 3bd6e94bec122a951d462c239b47954cf5f36e33 arch: restore generic-y += shmparam.h for some architectures
date:   5 days ago
config: microblaze-allyesconfig (attached as .config)
compiler: microblaze-linux-gcc (GCC) 8.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 3bd6e94bec122a951d462c239b47954cf5f36e33
        # save the attached .config to linux build tree
        GCC_VERSION=8.1.0 make.cross ARCH=microblaze 

All errors (new ones prefixed by >>):

   `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o
   `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o
   drivers/infiniband/core/uverbs_main.o: In function `ib_uverbs_write':
>> drivers/infiniband/core/.tmp_gl_uverbs_main.o:(.text+0x139c): undefined reference to `__user_bad'
   drivers/android/binder.o: In function `binder_thread_write':
>> drivers/android/.tmp_gl_binder.o:(.text+0xdbb8): undefined reference to `__user_bad'
   drivers/android/.tmp_gl_binder.o:(.text+0xdbe4): undefined reference to `__user_bad'
   drivers/android/.tmp_gl_binder.o:(.text+0xe05c): undefined reference to `__user_bad'
   drivers/android/.tmp_gl_binder.o:(.text+0xe5d8): undefined reference to `__user_bad'
   drivers/android/binder.o:drivers/android/.tmp_gl_binder.o:(.text+0xebb8): more undefined references to `__user_bad' follow

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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Re: drivers/infiniband/core/.tmp_gl_uverbs_main.o:undefined reference to `__user_bad'

[Leon Romanovsky]

On Sun, Aug 04, 2019 at 09:50:50PM -0700, Randy Dunlap wrote:
> On 4/2/19 7:38 PM, Randy Dunlap wrote:
> > On 2/28/19 1:03 AM, kbuild test robot wrote:
> >> Hi Jason,
> >>
> >> FYI, the error/warning still remains.
> >>
> >> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> >> head:   7d762d69145a54d169f58e56d6dac57a5508debc
> >> commit: 3a6532c9af1a7836da2d597f1aaca73cb16c3b97 RDMA/uverbs: Use uverbs_attr_bundle to pass udata for write
> >> date:   3 months ago
> >> config: microblaze-allyesconfig (attached as .config)
> >> compiler: microblaze-linux-gcc (GCC) 8.2.0
> >> reproduce:
> >>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> >>         chmod +x ~/bin/make.cross
> >>         git checkout 3a6532c9af1a7836da2d597f1aaca73cb16c3b97
> >>         # save the attached .config to linux build tree
> >>         GCC_VERSION=8.2.0 make.cross ARCH=microblaze
> >>
> >> All errors (new ones prefixed by >>):
> >>
> >>    `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o
> >>    `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o
> >>    drivers/infiniband/core/uverbs_main.o: In function `ib_uverbs_write':
> >>>> drivers/infiniband/core/.tmp_gl_uverbs_main.o:(.text+0x13a4): undefined reference to `__user_bad'
> >>    drivers/android/binder.o: In function `binder_thread_write':
> >>    drivers/android/.tmp_gl_binder.o:(.text+0xda6c): undefined reference to `__user_bad'
> >>    drivers/android/.tmp_gl_binder.o:(.text+0xda98): undefined reference to `__user_bad'
> >>    drivers/android/.tmp_gl_binder.o:(.text+0xdf10): undefined reference to `__user_bad'
> >>    drivers/android/.tmp_gl_binder.o:(.text+0xe498): undefined reference to `__user_bad'
> >>    drivers/android/binder.o:drivers/android/.tmp_gl_binder.o:(.text+0xea78): more undefined references to `__user_bad' follow
> >>
> >> ---
> >> 0-DAY kernel test infrastructure                Open Source Technology Center
> >> https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
> >
> > Hi Michal,
> >
> > Would you comment on this, please?
>
> [crickets]
>
> > Jason has said more than once that these build errors are because
> > arch/microblaze does not support get_user() of size 8 (bytes),
> > although it does support a put_user() of size 8.
> >
> >
> > See a previous report & comment at
> > https://lore.kernel.org/lkml/20190101200742.GA5757@mellanox.com/
> >
> >
> > thanks.
>
> I currently don't have a cross-build environment set up, so I haven't
> built this yet, but a patch like this might fix this nagging issue.
>
> (It's clearly not high priority since arch/microblaze/ mostly seems to be
> not well-maintained.)

It seems reasonable, drivers/infiniband/* never worked and will work on
that architecture.

Thanks

Re: drivers/infiniband/core/.tmp_gl_uverbs_main.o:undefined reference to `__user_bad'

[Randy Dunlap]

On 4/2/19 7:38 PM, Randy Dunlap wrote:
> On 2/28/19 1:03 AM, kbuild test robot wrote:
>> Hi Jason,
>>
>> FYI, the error/warning still remains.
>>
>> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
>> head:   7d762d69145a54d169f58e56d6dac57a5508debc
>> commit: 3a6532c9af1a7836da2d597f1aaca73cb16c3b97 RDMA/uverbs: Use uverbs_attr_bundle to pass udata for write
>> date:   3 months ago
>> config: microblaze-allyesconfig (attached as .config)
>> compiler: microblaze-linux-gcc (GCC) 8.2.0
>> reproduce:
>>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>>         chmod +x ~/bin/make.cross
>>         git checkout 3a6532c9af1a7836da2d597f1aaca73cb16c3b97
>>         # save the attached .config to linux build tree
>>         GCC_VERSION=8.2.0 make.cross ARCH=microblaze 
>>
>> All errors (new ones prefixed by >>):
>>
>>    `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o
>>    `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o
>>    drivers/infiniband/core/uverbs_main.o: In function `ib_uverbs_write':
>>>> drivers/infiniband/core/.tmp_gl_uverbs_main.o:(.text+0x13a4): undefined reference to `__user_bad'
>>    drivers/android/binder.o: In function `binder_thread_write':
>>    drivers/android/.tmp_gl_binder.o:(.text+0xda6c): undefined reference to `__user_bad'
>>    drivers/android/.tmp_gl_binder.o:(.text+0xda98): undefined reference to `__user_bad'
>>    drivers/android/.tmp_gl_binder.o:(.text+0xdf10): undefined reference to `__user_bad'
>>    drivers/android/.tmp_gl_binder.o:(.text+0xe498): undefined reference to `__user_bad'
>>    drivers/android/binder.o:drivers/android/.tmp_gl_binder.o:(.text+0xea78): more undefined references to `__user_bad' follow
>>
>> ---
>> 0-DAY kernel test infrastructure                Open Source Technology Center
>> https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
> 
> Hi Michal,
> 
> Would you comment on this, please?

[crickets]

> Jason has said more than once that these build errors are because
> arch/microblaze does not support get_user() of size 8 (bytes),
> although it does support a put_user() of size 8.
> 
> 
> See a previous report & comment at
> https://lore.kernel.org/lkml/20190101200742.GA5757@mellanox.com/
> 
> 
> thanks.

I currently don't have a cross-build environment set up, so I haven't
built this yet, but a patch like this might fix this nagging issue.

(It's clearly not high priority since arch/microblaze/ mostly seems to be
not well-maintained.)

---
From: Randy Dunlap <rdunlap@infradead.org>

arch/microblaze/ is missing support for get_user() of size 8 bytes,
so add it by using __copy_from_user().

Fixes these build errors:
   drivers/infiniband/core/uverbs_main.o: In function `ib_uverbs_write':
   drivers/infiniband/core/.tmp_gl_uverbs_main.o:(.text+0x13a4): undefined reference to `__user_bad'
   drivers/android/binder.o: In function `binder_thread_write':
   drivers/android/.tmp_gl_binder.o:(.text+0xda6c): undefined reference to `__user_bad'
   drivers/android/.tmp_gl_binder.o:(.text+0xda98): undefined reference to `__user_bad'
   drivers/android/.tmp_gl_binder.o:(.text+0xdf10): undefined reference to `__user_bad'
   drivers/android/.tmp_gl_binder.o:(.text+0xe498): undefined reference to `__user_bad'
   drivers/android/binder.o:drivers/android/.tmp_gl_binder.o:(.text+0xea78): more undefined references to `__user_bad' follow

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
---
 arch/microblaze/include/asm/uaccess.h |    6 ++++++
 1 file changed, 6 insertions(+)

--- lnx-53-rc3.orig/arch/microblaze/include/asm/uaccess.h
+++ lnx-53-rc3/arch/microblaze/include/asm/uaccess.h
@@ -186,6 +186,9 @@ extern long __user_bad(void);
 			__get_user_asm("lw", __gu_addr, __gu_val,	\
 				       __gu_err);			\
 			break;						\
+		case 8:							\
+			__gu_err = __copy_from_user(&__gu_val, __gu_addr, 8);\
+			break;						\
 		default:						\
 			__gu_err = __user_bad();			\
 			break;						\
@@ -212,6 +215,9 @@ extern long __user_bad(void);
 	case 4:								\
 		__get_user_asm("lw", (ptr), __gu_val, __gu_err);	\
 		break;							\
+	case 8:								\
+		__gu_err = __copy_from_user(&__gu_val, ptr, 8);		\
+		break;							\
 	default:							\
 		/* __gu_val = 0; __gu_err = -EINVAL;*/ __gu_err = __user_bad();\
 	}								\

Re: drivers/infiniband/core/.tmp_gl_uverbs_main.o:undefined reference to `__user_bad'

[Randy Dunlap]

On 2/28/19 1:03 AM, kbuild test robot wrote:
> Hi Jason,
> 
> FYI, the error/warning still remains.
> 
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   7d762d69145a54d169f58e56d6dac57a5508debc
> commit: 3a6532c9af1a7836da2d597f1aaca73cb16c3b97 RDMA/uverbs: Use uverbs_attr_bundle to pass udata for write
> date:   3 months ago
> config: microblaze-allyesconfig (attached as .config)
> compiler: microblaze-linux-gcc (GCC) 8.2.0
> reproduce:
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         git checkout 3a6532c9af1a7836da2d597f1aaca73cb16c3b97
>         # save the attached .config to linux build tree
>         GCC_VERSION=8.2.0 make.cross ARCH=microblaze 
> 
> All errors (new ones prefixed by >>):
> 
>    `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o
>    `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o
>    drivers/infiniband/core/uverbs_main.o: In function `ib_uverbs_write':
>>> drivers/infiniband/core/.tmp_gl_uverbs_main.o:(.text+0x13a4): undefined reference to `__user_bad'
>    drivers/android/binder.o: In function `binder_thread_write':
>    drivers/android/.tmp_gl_binder.o:(.text+0xda6c): undefined reference to `__user_bad'
>    drivers/android/.tmp_gl_binder.o:(.text+0xda98): undefined reference to `__user_bad'
>    drivers/android/.tmp_gl_binder.o:(.text+0xdf10): undefined reference to `__user_bad'
>    drivers/android/.tmp_gl_binder.o:(.text+0xe498): undefined reference to `__user_bad'
>    drivers/android/binder.o:drivers/android/.tmp_gl_binder.o:(.text+0xea78): more undefined references to `__user_bad' follow
> 
> ---
> 0-DAY kernel test infrastructure                Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

Hi Michal,

Would you comment on this, please?

Jason has said more than once that these build errors are because
arch/microblaze does not support get_user() of size 8 (bytes),
although it does support a put_user() of size 8.


See a previous report & comment at
https://lore.kernel.org/lkml/20190101200742.GA5757@mellanox.com/


thanks.
-- 
~Randy

drivers/infiniband/core/.tmp_gl_uverbs_main.o:undefined reference to `__user_bad'

[kbuild test robot]

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Hi Jason,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   7d762d69145a54d169f58e56d6dac57a5508debc
commit: 3a6532c9af1a7836da2d597f1aaca73cb16c3b97 RDMA/uverbs: Use uverbs_attr_bundle to pass udata for write
date:   3 months ago
config: microblaze-allyesconfig (attached as .config)
compiler: microblaze-linux-gcc (GCC) 8.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 3a6532c9af1a7836da2d597f1aaca73cb16c3b97
        # save the attached .config to linux build tree
        GCC_VERSION=8.2.0 make.cross ARCH=microblaze 

All errors (new ones prefixed by >>):

   `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o
   `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o
   drivers/infiniband/core/uverbs_main.o: In function `ib_uverbs_write':
>> drivers/infiniband/core/.tmp_gl_uverbs_main.o:(.text+0x13a4): undefined reference to `__user_bad'
   drivers/android/binder.o: In function `binder_thread_write':
   drivers/android/.tmp_gl_binder.o:(.text+0xda6c): undefined reference to `__user_bad'
   drivers/android/.tmp_gl_binder.o:(.text+0xda98): undefined reference to `__user_bad'
   drivers/android/.tmp_gl_binder.o:(.text+0xdf10): undefined reference to `__user_bad'
   drivers/android/.tmp_gl_binder.o:(.text+0xe498): undefined reference to `__user_bad'
   drivers/android/binder.o:drivers/android/.tmp_gl_binder.o:(.text+0xea78): more undefined references to `__user_bad' follow

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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Re: drivers/infiniband/core/.tmp_gl_uverbs_main.o:undefined reference to `__user_bad'

[Jason Gunthorpe]

On Mon, Feb 18, 2019 at 11:32:38AM +0800, kbuild test robot wrote:
> Hi Jason,
> 
> FYI, the error/warning still remains.

Nothing has changed, it is still a microblaze problem.

Jason

Re: drivers/infiniband/core/.tmp_gl_uverbs_main.o:undefined reference to `__user_bad'

[Jason Gunthorpe]

On Wed, Jan 02, 2019 at 02:33:41AM +0800, kbuild test robot wrote:
> Hi Jason,
> 
> FYI, the error/warning still remains.

Like binder, DRM, etc, uverbs requires architectures to support 8 byte
get_user/put_user.

For some reason microblaze only supports 8 byte for put_user, so it
fails to compile.

I don't see a reason to change uverbs here, I think microblaze should
be fixed, then it would fix all the cases below.

Jason

> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   e1ef035d272ef4dbfdda98e58699698305138856
> commit: 3a6532c9af1a7836da2d597f1aaca73cb16c3b97 RDMA/uverbs: Use uverbs_attr_bundle to pass udata for write
> date:   5 weeks ago
> config: microblaze-allyesconfig (attached as .config)
> compiler: microblaze-linux-gcc (GCC) 8.1.0
> reproduce:
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         git checkout 3a6532c9af1a7836da2d597f1aaca73cb16c3b97
>         # save the attached .config to linux build tree
>         GCC_VERSION=8.1.0 make.cross ARCH=microblaze 
> 
> All errors (new ones prefixed by >>):
> 
>    `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o
>    `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o
>    drivers/infiniband/core/uverbs_main.o: In function `ib_uverbs_write':
> >> drivers/infiniband/core/.tmp_gl_uverbs_main.o:(.text+0x13a4): undefined reference to `__user_bad'
>    drivers/android/binder.o: In function `binder_thread_write':
>    drivers/android/.tmp_gl_binder.o:(.text+0xda6c): undefined reference to `__user_bad'
>    drivers/android/.tmp_gl_binder.o:(.text+0xda98): undefined reference to `__user_bad'
>    drivers/android/.tmp_gl_binder.o:(.text+0xdf10): undefined reference to `__user_bad'
>    drivers/android/.tmp_gl_binder.o:(.text+0xe498): undefined reference to `__user_bad'
>    drivers/android/binder.o:drivers/android/.tmp_gl_binder.o:(.text+0xea78): more undefined references to `__user_bad' follow
> 
> 0-DAY kernel test infrastructure                Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

drivers/infiniband/core/.tmp_gl_uverbs_main.o:undefined reference to `__user_bad'

[kbuild test robot]

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Hi Jason,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   e1ef035d272ef4dbfdda98e58699698305138856
commit: 3a6532c9af1a7836da2d597f1aaca73cb16c3b97 RDMA/uverbs: Use uverbs_attr_bundle to pass udata for write
date:   5 weeks ago
config: microblaze-allyesconfig (attached as .config)
compiler: microblaze-linux-gcc (GCC) 8.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 3a6532c9af1a7836da2d597f1aaca73cb16c3b97
        # save the attached .config to linux build tree
        GCC_VERSION=8.1.0 make.cross ARCH=microblaze 

All errors (new ones prefixed by >>):

   `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o
   `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o
   drivers/infiniband/core/uverbs_main.o: In function `ib_uverbs_write':
>> drivers/infiniband/core/.tmp_gl_uverbs_main.o:(.text+0x13a4): undefined reference to `__user_bad'
   drivers/android/binder.o: In function `binder_thread_write':
   drivers/android/.tmp_gl_binder.o:(.text+0xda6c): undefined reference to `__user_bad'
   drivers/android/.tmp_gl_binder.o:(.text+0xda98): undefined reference to `__user_bad'
   drivers/android/.tmp_gl_binder.o:(.text+0xdf10): undefined reference to `__user_bad'
   drivers/android/.tmp_gl_binder.o:(.text+0xe498): undefined reference to `__user_bad'
   drivers/android/binder.o:drivers/android/.tmp_gl_binder.o:(.text+0xea78): more undefined references to `__user_bad' follow

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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