Re: [kbuild-all] Re: arceb-elf-ld: include/linux/leds.h:193: undefined reference to `devm_led_classdev_register_ext'

[Rong Chen]

On 10/10/20 11:49 AM, Randy Dunlap wrote:
> On 10/9/20 8:19 PM, Rong Chen wrote:
> > On 10/8/20 3:15 PM, Pavel Machek wrote:
> > > Hi!
> > >
> > > > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> > > > head:   c85fb28b6f999db9928b841f63f1beeb3074eeca
> > > > commit: 92a81562e695628086acb92f95090ab09d9b9ec0 leds: lp55xx: Add multicolor framework support to lp55xx
> > > > date:   3 months ago
> > > > config: arc-randconfig-r035-20201008 (attached as .config)
> > > > compiler: arceb-elf-gcc (GCC) 9.3.0
> > > > reproduce (this is a W=1 build):
> > > >           wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> > > >           chmod +x ~/bin/make.cross
> > > >           # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=92a81562e695628086acb92f95090ab09d9b9ec0
> > > >           git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> > > >           git fetch --no-tags linus master
> > > >           git checkout 92a81562e695628086acb92f95090ab09d9b9ec0
> > > >           # save the attached .config to linux build tree
> > > >           COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc
> > > >
> > > > If you fix the issue, kindly add following tag as appropriate
> > > > Reported-by: kernel test robot <lkp@xxxxxxxxx>
> > > Hi robot. Do you have human around to talk to?
> > >
> > > > All errors (new ones prefixed by >>):
> > > >
> > > >      arceb-elf-ld: lib/stackdepot.o: in function `filter_irq_stacks':
> > > >      lib/stackdepot.c:331: undefined reference to `__irqentry_text_start'
> > > >      arceb-elf-ld: lib/stackdepot.c:331: undefined reference to `__irqentry_text_start'
> > > >      arceb-elf-ld: lib/stackdepot.o: in function `in_irqentry_text':
> > > >      lib/stackdepot.c:323: undefined reference to `__irqentry_text_end'
> > > >      arceb-elf-ld: lib/stackdepot.c:323: undefined reference to `__irqentry_text_end'
> > > >      arceb-elf-ld: lib/stackdepot.c:324: undefined reference to `__softirqentry_text_start'
> > > >      arceb-elf-ld: lib/stackdepot.c:324: undefined reference to `__softirqentry_text_start'
> > > >      arceb-elf-ld: lib/stackdepot.c:325: undefined reference to `__softirqentry_text_end'
> > > >      arceb-elf-ld: lib/stackdepot.c:325: undefined reference to
> > > What is going on here? Did you just start testing arc? The commit
> > > is... really old.
> > Hi Pavel,
> >
> > Only this error "arceb-elf-ld: include/linux/leds.h:193: undefined reference to `devm_led_classdev_register_ext'" was found in this commit,
> > other errors are for reference only, and the test config is a rand config, so it's discovered by chance.
> Hi,
> Just for the record, I could not reproduce the build error
> with the config file that was provided.

Hi Randy,

I can reproduce it with the above reproduce steps:

➜  linux git:(92a81562e695) ✗ make 
CROSS_COMPILE=/home/nfs/0day/gcc-9.3.0-nolibc/arceb-elf/bin/arceb-elf- 
ARCH=arc
  CALL    scripts/checksyscalls.sh
  CALL    scripts/atomic/check-atomics.sh
  CHK     include/generated/compile.h
  GEN     .version
  CHK     include/generated/compile.h
  UPD     include/generated/compile.h
  CC      init/version.o
  AR      init/built-in.a
  LD      vmlinux.o
  MODPOST vmlinux.symvers
  MODINFO modules.builtin.modinfo
  GEN     modules.builtin
  LD      .tmp_vmlinux.kallsyms1
/home/nfs/0day/gcc-9.3.0-nolibc/arceb-elf/bin/arceb-elf-ld: 
lib/stackdepot.o: in function `filter_irq_stacks':
/home/nfs/linux/lib/stackdepot.c:331: undefined reference to 
`__irqentry_text_start'
/home/nfs/0day/gcc-9.3.0-nolibc/arceb-elf/bin/arceb-elf-ld: 
/home/nfs/linux/lib/stackdepot.c:331: undefined reference to 
`__irqentry_text_start'
/home/nfs/0day/gcc-9.3.0-nolibc/arceb-elf/bin/arceb-elf-ld: 
lib/stackdepot.o: in function `in_irqentry_text':
/home/nfs/linux/lib/stackdepot.c:323: undefined reference to 
`__irqentry_text_end'
/home/nfs/0day/gcc-9.3.0-nolibc/arceb-elf/bin/arceb-elf-ld: 
/home/nfs/linux/lib/stackdepot.c:323: undefined reference to 
`__irqentry_text_end'
/home/nfs/0day/gcc-9.3.0-nolibc/arceb-elf/bin/arceb-elf-ld: 
/home/nfs/linux/lib/stackdepot.c:324: undefined reference to 
`__softirqentry_text_start'
/home/nfs/0day/gcc-9.3.0-nolibc/arceb-elf/bin/arceb-elf-ld: 
/home/nfs/linux/lib/stackdepot.c:324: undefined reference to 
`__softirqentry_text_start'
/home/nfs/0day/gcc-9.3.0-nolibc/arceb-elf/bin/arceb-elf-ld: 
/home/nfs/linux/lib/stackdepot.c:325: undefined reference to 
`__softirqentry_text_end'
/home/nfs/0day/gcc-9.3.0-nolibc/arceb-elf/bin/arceb-elf-ld: 
/home/nfs/linux/lib/stackdepot.c:325: undefined reference to 
`__softirqentry_text_end'
/home/nfs/0day/gcc-9.3.0-nolibc/arceb-elf/bin/arceb-elf-ld: 
drivers/leds/leds-lp55xx-common.o: in function `devm_led_classdev_register':
/home/nfs/linux/./include/linux/leds.h:193: undefined reference to 
`devm_led_classdev_register_ext'
/home/nfs/0day/gcc-9.3.0-nolibc/arceb-elf/bin/arceb-elf-ld: 
/home/nfs/linux/./include/linux/leds.h:193: undefined reference to 
`devm_led_classdev_register_ext'
make: *** [Makefile:1139: vmlinux] Error 1

Best Regards,
Rong Chen