Messages in this thread | | | Date | Mon, 18 Mar 2024 15:25:22 +0100 | From | "Arnd Bergmann" <> | Subject | Re: WARNING: modpost: "cmpxchg8b_emu" [lib/test_lockup.ko] has no CRC! |
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On Mon, Mar 18, 2024, at 14:27, kernel test robot wrote: > tree: > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > master > head: f6cef5f8c37f58a3bc95b3754c3ae98e086631ca > commit: 88a2b4edda3d0709727be53f4423b0b832d91de3 x86/Kconfig: Rework > CONFIG_X86_PAE dependency > date: 3 months ago > config: um-randconfig-r035-20230726
> WARNING: modpost: EXPORT symbol "cmpxchg8b_emu" [vmlinux] version > generation failed, symbol will not be versioned. > Is "cmpxchg8b_emu" prototyped in <asm/asm-prototypes.h>? > WARNING: modpost: EXPORT symbol "csum_partial" [vmlinux] version > generation failed, symbol will not be versioned. > Is "csum_partial" prototyped in <asm/asm-prototypes.h>? > WARNING: modpost: EXPORT symbol "csum_partial_copy_generic" [vmlinux] > version generation failed, symbol will not be versioned. > Is "csum_partial_copy_generic" prototyped in <asm/asm-prototypes.h>? >>> WARNING: modpost: "cmpxchg8b_emu" [lib/test_lockup.ko] has no CRC! >>> WARNING: modpost: "cmpxchg8b_emu" [lib/atomic64_test.ko] has no CRC!
I have not tested arch/um randconfig builds, but my guess is that this was not actually introduced by my patch but rather lkp bisected this into my commit because that changed the config in a way that hides the preexisting bug on older kernels.
Arnd
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