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Mon, 18 Mar 2024 10:25:43 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface User-Agent: Cyrus-JMAP/3.11.0-alpha0-300-gdee1775a43-fm-20240315.001-gdee1775a Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: In-Reply-To: <202403182122.G6VFSE9v-lkp@intel.com> References: <202403182122.G6VFSE9v-lkp@intel.com> Date: Mon, 18 Mar 2024 15:25:22 +0100 From: "Arnd Bergmann" To: "kernel test robot" Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, "Borislav Petkov" Subject: Re: WARNING: modpost: "cmpxchg8b_emu" [lib/test_lockup.ko] has no CRC! Content-Type: text/plain 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 ? > WARNING: modpost: EXPORT symbol "csum_partial" [vmlinux] version > generation failed, symbol will not be versioned. > Is "csum_partial" prototyped in ? > WARNING: modpost: EXPORT symbol "csum_partial_copy_generic" [vmlinux] > version generation failed, symbol will not be versioned. > Is "csum_partial_copy_generic" prototyped in ? >>> 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