From: kernel test robot <lkp@intel.com>
To: "Christian König " <ckoenig.leichtzumerken@gmail.com>
Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org,
Dave Airlie <airlied@redhat.com>
Subject: error: couldn't allocate output register for constraint 'ZB'
Date: Sat, 26 Sep 2026 07:40:31 +0800 [thread overview]
Message-ID: <202609260715.renJwQgG-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 5fc5768c7ca92895ccd1de94dc521e5a55ae7896
commit: 4e28aa8f7ee26d67a4addee6e3980f1cbf861b49 drm/drm_exec: avoid indirect goto
date: 3 months ago
config: loongarch-randconfig-r1306-20260925 (https://download.01.org/0day-ci/archive/20260926/202609260715.renJwQgG-lkp@intel.com/config)
compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260926/202609260715.renJwQgG-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Fixes: 4e28aa8f7ee2 ("drm/drm_exec: avoid indirect goto")
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202609260715.renJwQgG-lkp@intel.com/
All error/warnings (new ones prefixed by >>):
warning: overriding the module target triple with x86_64-unknown-linux-gnu [-Woverride-module]
warning: linking module 'drivers/iommu/generic_pt/fmt/kunit_iommu_vtdss.o': Linking two modules of different target triples: 'lib/kunit/test.o' is 'loongarch64-unknown-linux-gnusf' whereas 'drivers/iommu/generic_pt/fmt/kunit_iommu_vtdss.o' is 'x86_64-unknown-linux-gnu'
[-Wlinker-warnings]
warning: linking module 'drivers/iommu/generic_pt/fmt/kunit_iommu_vtdss.o': Linking two modules of different target triples: 'lib/maple_tree.o' is 'loongarch64-unknown-linux-gnusf' whereas 'drivers/iommu/generic_pt/fmt/kunit_iommu_vtdss.o' is 'x86_64-unknown-linux-gnu'
[-Wlinker-warnings]
>> warning: linking module 'drivers/iommu/generic_pt/fmt/kunit_iommu_vtdss.o': Linking two modules of different target triples: 'mm/kasan/generic.o' is 'loongarch64-unknown-linux-gnusf' whereas 'drivers/iommu/generic_pt/fmt/kunit_iommu_vtdss.o' is 'x86_64-unknown-linux-gnu'
[-Wlinker-warnings]
>> warning: linking module 'drivers/iommu/generic_pt/fmt/kunit_iommu_vtdss.o': Linking two modules of different target triples: 'mm/kasan/shadow.o' is 'loongarch64-unknown-linux-gnusf' whereas 'drivers/iommu/generic_pt/fmt/kunit_iommu_vtdss.o' is 'x86_64-unknown-linux-gnu'
[-Wlinker-warnings]
warning: linking module 'drivers/iommu/generic_pt/fmt/kunit_iommu_vtdss.o': Linking two modules of different target triples: 'mm/vmstat.o' is 'loongarch64-unknown-linux-gnusf' whereas 'drivers/iommu/generic_pt/fmt/kunit_iommu_vtdss.o' is 'x86_64-unknown-linux-gnu'
[-Wlinker-warnings]
'loongarch64' is not a recognized processor for this target (ignoring processor)
'-d' is not a recognized feature for this target (ignoring feature)
'-f' is not a recognized feature for this target (ignoring feature)
'-ual' is not a recognized feature for this target (ignoring feature)
'loongarch64' is not a recognized processor for this target (ignoring processor)
'loongarch64' is not a recognized processor for this target (ignoring processor)
'-d' is not a recognized feature for this target (ignoring feature)
'-f' is not a recognized feature for this target (ignoring feature)
'-ual' is not a recognized feature for this target (ignoring feature)
'loongarch64' is not a recognized processor for this target (ignoring processor)
>> error: couldn't allocate output register for constraint 'ZB'
note: expanded from here
>> error: couldn't allocate output register for constraint 'ZB'
note: expanded from here
>> error: couldn't allocate output register for constraint 'ZB'
note: expanded from here
>> error: couldn't allocate output register for constraint 'ZB'
note: expanded from here
>> <inline asm>:1:2: error: invalid instruction mnemonic 'dbar'
dbar $16
^~~~
error: cannot compile inline asm
>> <inline asm>:1:2: error: invalid instruction mnemonic 'dbar'
dbar $16
^~~~
error: cannot compile inline asm
>> <inline asm>:1:2: error: invalid instruction mnemonic 'dbar'
dbar $16
^~~~
error: cannot compile inline asm
>> <inline asm>:1:2: error: invalid instruction mnemonic 'dbar'
dbar $16
^~~~
error: cannot compile inline asm
>> error: couldn't allocate output register for constraint 'ZB'
note: expanded from here
>> error: couldn't allocate output register for constraint 'ZB'
note: expanded from here
>> <inline asm>:1:2: error: invalid instruction mnemonic 'dbar'
dbar $16
^~~~
error: cannot compile inline asm
>> <inline asm>:1:2: error: invalid instruction mnemonic 'dbar'
dbar $16
^~~~
error: cannot compile inline asm
>> <inline asm>:1:2: error: invalid instruction mnemonic 'dbar'
dbar $16
^~~~
error: cannot compile inline asm
>> <inline asm>:1:2: error: invalid instruction mnemonic 'dbar'
dbar $16
^~~~
error: cannot compile inline asm
6 warnings and 14 errors generated.
--
warning: overriding the module target triple with x86_64-unknown-linux-gnu [-Woverride-module]
warning: linking module 'drivers/iommu/generic_pt/fmt/kunit_iommu_amdv1.o': Linking two modules of different target triples: 'lib/kunit/test.o' is 'loongarch64-unknown-linux-gnusf' whereas 'drivers/iommu/generic_pt/fmt/kunit_iommu_amdv1.o' is 'x86_64-unknown-linux-gnu'
[-Wlinker-warnings]
warning: linking module 'drivers/iommu/generic_pt/fmt/kunit_iommu_amdv1.o': Linking two modules of different target triples: 'lib/maple_tree.o' is 'loongarch64-unknown-linux-gnusf' whereas 'drivers/iommu/generic_pt/fmt/kunit_iommu_amdv1.o' is 'x86_64-unknown-linux-gnu'
[-Wlinker-warnings]
>> warning: linking module 'drivers/iommu/generic_pt/fmt/kunit_iommu_amdv1.o': Linking two modules of different target triples: 'mm/kasan/generic.o' is 'loongarch64-unknown-linux-gnusf' whereas 'drivers/iommu/generic_pt/fmt/kunit_iommu_amdv1.o' is 'x86_64-unknown-linux-gnu'
[-Wlinker-warnings]
>> warning: linking module 'drivers/iommu/generic_pt/fmt/kunit_iommu_amdv1.o': Linking two modules of different target triples: 'mm/kasan/shadow.o' is 'loongarch64-unknown-linux-gnusf' whereas 'drivers/iommu/generic_pt/fmt/kunit_iommu_amdv1.o' is 'x86_64-unknown-linux-gnu'
[-Wlinker-warnings]
warning: linking module 'drivers/iommu/generic_pt/fmt/kunit_iommu_amdv1.o': Linking two modules of different target triples: 'mm/vmstat.o' is 'loongarch64-unknown-linux-gnusf' whereas 'drivers/iommu/generic_pt/fmt/kunit_iommu_amdv1.o' is 'x86_64-unknown-linux-gnu'
[-Wlinker-warnings]
'loongarch64' is not a recognized processor for this target (ignoring processor)
'-d' is not a recognized feature for this target (ignoring feature)
'-f' is not a recognized feature for this target (ignoring feature)
'-ual' is not a recognized feature for this target (ignoring feature)
'loongarch64' is not a recognized processor for this target (ignoring processor)
'loongarch64' is not a recognized processor for this target (ignoring processor)
'-d' is not a recognized feature for this target (ignoring feature)
'-f' is not a recognized feature for this target (ignoring feature)
'-ual' is not a recognized feature for this target (ignoring feature)
'loongarch64' is not a recognized processor for this target (ignoring processor)
>> error: couldn't allocate output register for constraint 'ZB'
note: expanded from here
>> error: couldn't allocate output register for constraint 'ZB'
note: expanded from here
>> error: couldn't allocate output register for constraint 'ZB'
note: expanded from here
6 warnings and 3 errors generated.
--
warning: overriding the module target triple with x86_64-unknown-linux-gnu [-Woverride-module]
warning: linking module 'drivers/iommu/generic_pt/fmt/kunit_iommu_riscv64.o': Linking two modules of different target triples: 'lib/kunit/test.o' is 'loongarch64-unknown-linux-gnusf' whereas 'drivers/iommu/generic_pt/fmt/kunit_iommu_riscv64.o' is 'x86_64-unknown-linux-gnu'
[-Wlinker-warnings]
warning: linking module 'drivers/iommu/generic_pt/fmt/kunit_iommu_riscv64.o': Linking two modules of different target triples: 'lib/maple_tree.o' is 'loongarch64-unknown-linux-gnusf' whereas 'drivers/iommu/generic_pt/fmt/kunit_iommu_riscv64.o' is 'x86_64-unknown-linux-gnu'
[-Wlinker-warnings]
>> warning: linking module 'drivers/iommu/generic_pt/fmt/kunit_iommu_riscv64.o': Linking two modules of different target triples: 'mm/kasan/generic.o' is 'loongarch64-unknown-linux-gnusf' whereas 'drivers/iommu/generic_pt/fmt/kunit_iommu_riscv64.o' is 'x86_64-unknown-linux-gnu'
[-Wlinker-warnings]
>> warning: linking module 'drivers/iommu/generic_pt/fmt/kunit_iommu_riscv64.o': Linking two modules of different target triples: 'mm/kasan/shadow.o' is 'loongarch64-unknown-linux-gnusf' whereas 'drivers/iommu/generic_pt/fmt/kunit_iommu_riscv64.o' is 'x86_64-unknown-linux-gnu'
[-Wlinker-warnings]
warning: linking module 'drivers/iommu/generic_pt/fmt/kunit_iommu_riscv64.o': Linking two modules of different target triples: 'mm/vmstat.o' is 'loongarch64-unknown-linux-gnusf' whereas 'drivers/iommu/generic_pt/fmt/kunit_iommu_riscv64.o' is 'x86_64-unknown-linux-gnu'
[-Wlinker-warnings]
'loongarch64' is not a recognized processor for this target (ignoring processor)
'-d' is not a recognized feature for this target (ignoring feature)
'-f' is not a recognized feature for this target (ignoring feature)
'-ual' is not a recognized feature for this target (ignoring feature)
'loongarch64' is not a recognized processor for this target (ignoring processor)
'loongarch64' is not a recognized processor for this target (ignoring processor)
'-d' is not a recognized feature for this target (ignoring feature)
'-f' is not a recognized feature for this target (ignoring feature)
'-ual' is not a recognized feature for this target (ignoring feature)
'loongarch64' is not a recognized processor for this target (ignoring processor)
>> error: couldn't allocate output register for constraint 'ZB'
note: expanded from here
>> error: couldn't allocate output register for constraint 'ZB'
note: expanded from here
6 warnings and 2 errors generated.
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-09-25 23:40 UTC|newest]
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