[linux-stable-rc:linux-5.10.y 7935/8233] signal.c:undefined reference to `uml_pm_wake'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.10.y
head:   10c6bbc07890234ed728ef39924dcdd3bd211e15
commit: b58294ce1a8ac8e234abd991255b1d1905520aed [7935/8233] um: Allow PM with suspend-to-idle
config: um-allnoconfig (https://download.01.org/0day-ci/archive/20220831/202208310636.cPgi92ku-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.3.0-5) 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@xxxxxxxxx>

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

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