Hi Johannes,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.10.y
head:   b4f4370de958b2655d6a93d4fc386eed8fe36cd6
commit: b58294ce1a8ac8e234abd991255b1d1905520aed [7935/9135] um: Allow PM with suspend-to-idle
config: um-allnoconfig (attached as .config)
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?id=b58294ce1a8ac8e234abd991255b1d1905520aed
        git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
        git fetch --no-tags linux-stable-rc linux-5.10.y
        git checkout b58294ce1a8ac8e234abd991255b1d1905520aed
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=um SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   /usr/bin/ld: warning: arch/x86/um/checksum_32.o: missing .note.GNU-stack section implies executable stack
   /usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
   /usr/bin/ld: warning: vmlinux has a LOAD segment with RWX permissions
   /usr/bin/ld: arch/um/os-Linux/signal.o: in function `sigusr1_handler':
>> signal.c:(.text+0x211): undefined reference to `uml_pm_wake'
   collect2: error: ld returned 1 exit status

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp