From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=198.175.65.10 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793095795; b=YpLCBuCuS9FuoYFgJpA4z7yJH71M558LvB9PWMbgOh+RKyPkOgIxEvWAAkzwT0nkCl1+ 4KPpL8gc9aG/Os2l09dYsXC9qvHW+xcmdTME+U4yP2IxE4Jl919TMAKtmACVw2DR+nMME S2JheQlDGD0UaCioSxWNUuek5trR0KHGOw9HSjoNjAn/rVp8ITr9wBieTssa0DKtY//qv rLGWaFrGA+f0T7JViB0JxGhUwCrSHsQqJ9Xpxd7lAUkxmwYgjQauUECJWWOJfW3c3KvD8 UdW/5MkcFK4XpNpLuAEdF1SCP0o66gPYXtzF/SByvVLYwmujPNo1DEnXcsjulAoYQ7w== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793095795; h=DMARC-Filter:DKIM-Signature:X-CSE-ConnectionGUID:X-CSE-MsgGUID: X-IronPort-AV:X-IronPort-AV:Received:X-CSE-ConnectionGUID: X-CSE-MsgGUID:X-ExtLoop1:X-IronPort-AV:Received:Received:Date:From:To: Cc:Subject:Message-ID:References:MIME-Version:Content-Type: Content-Disposition:In-Reply-To; bh=t4Wp2CERSkPQBs1N7oEfOmaN2478PDOfPQaW5G48NZQ=; b=IMHW2ga64c5s5Hw8v+0GSbC1Gm0IASkgNyFDDYnGCwVovnMF4TYYLysiwcXHgmG/rvwV 0NSJkIkTL4Gi9q38jGCrZVWm2DbgZAQ9YRiOVwndBydkQHXC2E3G3H+K4ZtST7F+H/DQX Outc2JR9meqQ2/E0BAZBPmPFk+vDU6aanqWy+bKVjR7uKpWgaq53c60+h+JskQbT3/T11 CP5/Ev4GJxVtJoDNZpRBjoLRvWM5NRLJReqDmTYFTvzhj3FHRBJxGcuhO/mnz6mGZccNF NWJGzzxo5+rXATNKOSY8Sp7TkGc7CCtJ8ChAUvZTpKRW16fIJLPURBv7ivCPA6xPgnw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=QzbOIchD; arc=none smtp.remote-ip=198.175.65.10 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.10]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 06442606A320; Tue, 27 Oct 2026 10:09:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 06442606A320 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=QzbOIchD DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1793095794; x=1824631794; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=UKqMYXXut2lTCf7jDkoq6hLEMqqdc/pViH8/r8Z+g3o=; b=QzbOIchDnsqG5xd9EM3SD8rE44ZrtYQIIkLZyv2zXzb6uEWsAlHEvPX/ FUgxjF8G8aGcAfyYpIKr9R7vgEjOF6lhTX8O/73/h2GsBtI6WZOKI8Ryz 6fzA7CiFKYQU2OAGaqXgv3VcqZznLchjHTSmULNdhr5yzzjp5a3D8/ER4 q+6juUZt6VjiCycA5cWqIre41zKmM6fCrfXpPVE9X+PhTj2YArYkB6bHY r+t71pWloVQdhrK/PY9YNfJ5QbyGHX/vsmR6IlzvUD87vwiPOa3fxrp9+ Z8yUTHnizfcre+tFqfZmN/4Hsmyz3B2Zuu5RYcyYET65A3eWJ86lrAK9d Q==; X-CSE-ConnectionGUID: 3jy3og59SyOGDq4vM7EG3g== X-CSE-MsgGUID: TYsab8gqT3K/9TKG4u+CDA== X-IronPort-AV: E=McAfee;i="6800,10657,11947"; a="1681722" X-IronPort-AV: E=Sophos;i="6.27,181,1787036400"; d="scan'208";a="1681722" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Oct 2026 03:09:53 -0700 X-CSE-ConnectionGUID: w5fNWj53TOS5CF+PkzH8Zw== X-CSE-MsgGUID: Q3Xepr0XT/CcYXWypqkakQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,181,1787036400"; d="scan'208";a="4898248" Received: from lkp-server01.sh.intel.com (HELO 0caa9d2d175c) ([10.239.97.150]) by fmviesa007.fm.intel.com with ESMTP; 27 Oct 2026 03:09:50 -0700 Received: from kbuild by 0caa9d2d175c with local (Exim 4.98.2) (envelope-from ) id 1xLe7n-00000000X6M-2UQP; Tue, 27 Oct 2026 10:09:47 +0000 Date: Tue, 27 Oct 2026 18:09:20 +0800 From: kernel test robot To: Heiko Carstens , Alexander Gordeev , Sven Schnelle , Vasily Gorbik , Christian Borntraeger , Ilya Leoshkevich Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org Subject: Re: [PATCH 4/4] s390/maccess: Remove spinlock from __s390_kernel_write() Message-ID: <202610271855.Il2BMBvq-lkp@intel.com> References: <20261026120329.1792436-5-hca@linux.ibm.com> X-Mailing-List: llvm@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261026120329.1792436-5-hca@linux.ibm.com> Hi Heiko, kernel test robot noticed the following build errors: [auto build test ERROR on s390/features] [also build test ERROR on trace/for-next bpf-next/master bpf/master linus/master v7.3 next-20261026] [cannot apply to bpf-next/net] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Heiko-Carstens/s390-jump_label-Serialize-text-patching-with-text_mutex/20261026-130326 base: https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git features patch link: https://lore.kernel.org/r/20261026120329.1792436-5-hca%40linux.ibm.com patch subject: [PATCH 4/4] s390/maccess: Remove spinlock from __s390_kernel_write() config: s390-defconfig (https://download.01.org/0day-ci/archive/20261027/202610271855.Il2BMBvq-lkp@intel.com/config) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261027/202610271855.Il2BMBvq-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202610271855.Il2BMBvq-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from arch/s390/mm/maccess.c:9: >> include/linux/text-patching.h:10:9: error: call to undeclared library function 'memcpy' with type 'void *(void *, const void *, unsigned long)'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 10 | return memcpy(dst, src, len); | ^ include/linux/text-patching.h:10:9: note: include the header or explicitly provide a declaration for 'memcpy' In file included from arch/s390/mm/maccess.c:15: In file included from include/linux/cpu.h:17: In file included from include/linux/node.h:18: In file included from include/linux/device.h:32: In file included from include/linux/device/driver.h:21: In file included from include/linux/module.h:20: In file included from include/linux/elf.h:6: In file included from arch/s390/include/asm/elf.h:173: In file included from arch/s390/include/asm/mmu_context.h:11: In file included from arch/s390/include/asm/pgalloc.h:18: In file included from include/linux/mm.h:36: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:7: include/linux/signal.h:98:11: warning: array index 3 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds] 98 | return (set->sig[3] | set->sig[2] | | ^ ~ arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here 22 | unsigned long sig[_NSIG_WORDS]; | ^ In file included from arch/s390/mm/maccess.c:15: In file included from include/linux/cpu.h:17: In file included from include/linux/node.h:18: In file included from include/linux/device.h:32: In file included from include/linux/device/driver.h:21: In file included from include/linux/module.h:20: In file included from include/linux/elf.h:6: In file included from arch/s390/include/asm/elf.h:173: In file included from arch/s390/include/asm/mmu_context.h:11: In file included from arch/s390/include/asm/pgalloc.h:18: In file included from include/linux/mm.h:36: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:7: include/linux/signal.h:98:25: warning: array index 2 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds] 98 | return (set->sig[3] | set->sig[2] | | ^ ~ arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here 22 | unsigned long sig[_NSIG_WORDS]; | ^ In file included from arch/s390/mm/maccess.c:15: In file included from include/linux/cpu.h:17: In file included from include/linux/node.h:18: In file included from include/linux/device.h:32: In file included from include/linux/device/driver.h:21: In file included from include/linux/module.h:20: In file included from include/linux/elf.h:6: In file included from arch/s390/include/asm/elf.h:173: In file included from arch/s390/include/asm/mmu_context.h:11: In file included from arch/s390/include/asm/pgalloc.h:18: In file included from include/linux/mm.h:36: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:7: include/linux/signal.h:99:4: warning: array index 1 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds] 99 | set->sig[1] | set->sig[0]) == 0; | ^ ~ arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here 22 | unsigned long sig[_NSIG_WORDS]; | ^ In file included from arch/s390/mm/maccess.c:15: In file included from include/linux/cpu.h:17: In file included from include/linux/node.h:18: In file included from include/linux/device.h:32: In file included from include/linux/device/driver.h:21: In file included from include/linux/module.h:20: In file included from include/linux/elf.h:6: In file included from arch/s390/include/asm/elf.h:173: In file included from arch/s390/include/asm/mmu_context.h:11: In file included from arch/s390/include/asm/pgalloc.h:18: In file included from include/linux/mm.h:36: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:7: include/linux/signal.h:101:11: warning: array index 1 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds] 101 | return (set->sig[1] | set->sig[0]) == 0; | ^ ~ arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here 22 | unsigned long sig[_NSIG_WORDS]; | ^ In file included from arch/s390/mm/maccess.c:15: In file included from include/linux/cpu.h:17: In file included from include/linux/node.h:18: In file included from include/linux/device.h:32: In file included from include/linux/device/driver.h:21: In file included from include/linux/module.h:20: In file included from include/linux/elf.h:6: In file included from arch/s390/include/asm/elf.h:173: In file included from arch/s390/include/asm/mmu_context.h:11: In file included from arch/s390/include/asm/pgalloc.h:18: In file included from include/linux/mm.h:36: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:7: include/linux/signal.h:114:11: warning: array index 3 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds] 114 | return (set1->sig[3] == set2->sig[3]) && | ^ ~ arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here 22 | unsigned long sig[_NSIG_WORDS]; | ^ In file included from arch/s390/mm/maccess.c:15: In file included from include/linux/cpu.h:17: vim +10 include/linux/text-patching.h 0c3beacf681ec89 Mike Rapoport (Microsoft 2024-10-23 6) 0c3beacf681ec89 Mike Rapoport (Microsoft 2024-10-23 7) #ifndef text_poke_copy 0c3beacf681ec89 Mike Rapoport (Microsoft 2024-10-23 8) static inline void *text_poke_copy(void *dst, const void *src, size_t len) 0c3beacf681ec89 Mike Rapoport (Microsoft 2024-10-23 9) { 0c3beacf681ec89 Mike Rapoport (Microsoft 2024-10-23 @10) return memcpy(dst, src, len); 0c3beacf681ec89 Mike Rapoport (Microsoft 2024-10-23 11) } 0c3beacf681ec89 Mike Rapoport (Microsoft 2024-10-23 12) #define text_poke_copy text_poke_copy 0c3beacf681ec89 Mike Rapoport (Microsoft 2024-10-23 13) #endif 0c3beacf681ec89 Mike Rapoport (Microsoft 2024-10-23 14) -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki