undefined reference to `__arm64_compat_sys_old_semctl'

From: John Stultz <hidden>
Date: 2019-03-06 00:26:44

Hey Arnd,
  I'm seeing build issues trying to build for HiKey960, which I've
bisected down to coming in w/ the timers-2038-for-linus branch:

arch/arm64/kernel/sys32.o:(.rodata+0x960): undefined reference to
`__arm64_compat_sys_old_semctl'
arch/arm64/kernel/sys32.o:(.rodata+0x980): undefined reference to
`__arm64_compat_sys_old_msgctl'
arch/arm64/kernel/sys32.o:(.rodata+0x9a0): undefined reference to
`__arm64_compat_sys_old_shmctl'
make: *** [vmlinux] Error 1

Laura pointed me to 275f22148e87 ("ipc: rename old-style
shmctl/semctl/msgctl syscalls") as the likely culprit.

My config does have CONFIG_ARCH_WANT_COMPAT_IPC_PARSE_VERSION=y, so
I'm not sure what might be going awry.

thanks
-john

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