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[91.5.123.77]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4851a8ea6c1sm17214745e9.11.2026.03.04.11.00.29 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 04 Mar 2026 11:00:30 -0800 (PST) Message-ID: <0be301c0-f9be-4d70-9fdb-7a260ccf83ac@googlemail.com> Date: Wed, 4 Mar 2026 20:00:29 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Betterbird (Windows) Subject: Re: [REGRESSION] Linux kernel 6.12.75 fails to compile with -Werror=implicit-function-declaration Content-Language: de-DE To: Aditya Garg , "zohar@linux.ibm.com" , "akpm@linux-foundation.org" , Harshit Mogalapalli , Greg Kroah-Hartman , Sasha Levin Cc: "ardb@kernel.org" , "bp@alien8.de" , "dave.hansen@linux.intel.com" , "graf@amazon.com" , "guoweikang.kernel@gmail.com" , "henry.willard@oracle.com" , "hpa@zytor.com" , "jbohac@suse.cz" , "joel.granados@kernel.org" , "linux-kernel@vger.kernel.org" , "mingo@redhat.com" , "noodles@fb.com" , "paul.x.webb@oracle.com" , "rppt@kernel.org" , "sohil.mehta@intel.com" , "sourabhjain@linux.ibm.com" , "stable@vger.kernel.org" , "tglx@linutronix.de" , "x86@kernel.org" , "yifei.l.liu@oracle.com" References: From: Peter Schneider In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Am 04.03.2026 um 18:35 schrieb Aditya Garg: > Hi > > I found out that Linux kernel 6.12.75 failed to compiled in my automatic builds. The compiler throws the error: > > arch/x86/kernel/setup.c: In function 'ima_get_kexec_buffer': > arch/x86/kernel/setup.c:380:15: error: implicit declaration of function 'ima_validate_range' [-Werror=implicit-function-declaration] > 380 | ret = ima_validate_range(ima_kexec_buffer_phys, ima_kexec_buffer_size); > | ^~~~~~~~~~~~~~~~~~ > cc1: some warnings being treated as errors > make[7]: *** [scripts/Makefile.build:229: arch/x86/kernel/setup.o] Error 1 > make[6]: *** [scripts/Makefile.build:466: arch/x86/kernel] Error 2 > make[5]: *** [scripts/Makefile.build:466: arch/x86] Error 2 I already found and reported this in the RC cycle [1], and Sasha dropped it in -rc2 [2], and now in the release, it obviously has, somewhat mysteriously, reappeared [3], affecting all of today's 6.x stable branch releases. [1] https://lore.kernel.org/stable/66461c13-1bb3-473c-b57f-adba9db4f756@googlemail.com/ [2] https://lore.kernel.org/stable/a04b1aa6-ba46-4368-9dfe-6320a2dafa79@googlemail.com/ [3] https://lore.kernel.org/stable/c435a3c6-5952-453f-9e50-31e0c6cdd09f@googlemail.com/ Beste Grüße, Peter Schneider -- Climb the mountain not to plant your flag, but to embrace the challenge, enjoy the air and behold the view. Climb it so you can see the world, not so the world can see you. -- David McCullough Jr. OpenPGP: 0xA3828BD796CCE11A8CADE8866E3A92C92C3FF244 Download: https://www.peters-netzplatz.de/download/pschneider1968_pub.asc https://keys.mailvelope.com/pks/lookup?op=get&search=pschneider1968@googlemail.com https://keys.mailvelope.com/pks/lookup?op=get&search=pschneider1968@gmail.com