From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0AD141E2858; Sat, 20 Sep 2025 14:52:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.15 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758379938; cv=none; b=nOqhxQgGJsATa3CtW25nW4D3YjQvuk2jGiNph8zsH6FIowHAV/rC+1aVGSODaZsQs9Xu2KnBd6hn2Pu50U3B4SXm9SirkiTL+kcTlKtd37ZjVOIoMahNX9wZR+9iGVI0b7h45mNPh8ph8wgw4tZFIJ+YqBZlyqGMBzTaO81De+M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758379938; c=relaxed/simple; bh=UUc100DiH5QSCSSktpUYXl2/8ztlxI58qE2abR1pwAo=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=pPRB/KlMb+d2jBDluAjbnxwW7ZkEgOQuVLs6SJ9bQLolIxC8jIiUObDdGwvXgbANzhtqGIFYzdFaycMKinfk9k6pVbI5QaMTW1V7lTr4dreNoNyZfYXZn6Y8d63zaiLYMbYIIZFK3wR4J390tc1vN5maloxJqnqWU9BJzoePiTY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=EBVyzSzL; arc=none smtp.client-ip=198.175.65.15 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) header.d=intel.com header.i=@intel.com header.b="EBVyzSzL" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1758379935; x=1789915935; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=UUc100DiH5QSCSSktpUYXl2/8ztlxI58qE2abR1pwAo=; b=EBVyzSzL7OZRvlfpLWzjc40ZRm9vd52VSOXmR6w0ArUMAz5ra9vaxIt2 XOVU1Ub8pB2kjuawM0Mygyv3yPHAnKmLKkrhNjHI5IKzzYSNI4IEXlC1z lzFmijzFzJdjW5J+5hOv1YJuSiGI1tSChS1+3z4O3mQGVIX72Cr0+8jQ3 5/ggXotsLOPrRkWZDgT9Rgif0I3BRzFRr7eg941TjLgj+PvqO0+ADRcVV dGqw6Bd5MzjtSGNbBhL8foxUuV1tc0cKZHUvUQPsr850lBDcOHCrGrKp6 VnaDwugKDI3W2yDH4eNqJiF9VzojOwzWPILpfHjrlqUsy2VPRNaz8sCIB w==; X-CSE-ConnectionGUID: RffmTo3YQ+KHBLQ99tb99g== X-CSE-MsgGUID: hgL6a3/WStaSlGrAjKHSuA== X-IronPort-AV: E=McAfee;i="6800,10657,11559"; a="64342008" X-IronPort-AV: E=Sophos;i="6.18,281,1751266800"; d="scan'208";a="64342008" Received: from orviesa005.jf.intel.com ([10.64.159.145]) by orvoesa107.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Sep 2025 07:52:13 -0700 X-CSE-ConnectionGUID: 6OvbacEKTU2c8vyfRuSxaQ== X-CSE-MsgGUID: 1lrjLAWUTZmK37vpom/sQA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.18,281,1751266800"; d="scan'208";a="181236519" Received: from lkp-server01.sh.intel.com (HELO 84a20bd60769) ([10.239.97.150]) by orviesa005.jf.intel.com with ESMTP; 20 Sep 2025 07:52:08 -0700 Received: from kbuild by 84a20bd60769 with local (Exim 4.96) (envelope-from ) id 1uzywX-0005ON-01; Sat, 20 Sep 2025 14:52:05 +0000 Date: Sat, 20 Sep 2025 22:52:01 +0800 From: kernel test robot To: Xu Lu , corbet@lwn.net, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, alex@ghiti.fr, will@kernel.org, peterz@infradead.org, boqun.feng@gmail.com, mark.rutland@arm.com, parri.andrea@gmail.com, ajones@ventanamicro.com, brs@rivosinc.com, anup@brainfault.org, atish.patra@linux.dev, pbonzini@redhat.com, shuah@kernel.org Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, apw@canonical.com, joe@perches.com, linux-doc@vger.kernel.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-kselftest@vger.kernel.org, Xu Lu Subject: Re: [PATCH v3 6/8] riscv: Apply acquire/release semantics to arch_xchg/arch_cmpxchg operations Message-ID: <202509202249.rOR3GJbT-lkp@intel.com> References: <20250919073714.83063-7-luxu.kernel@bytedance.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250919073714.83063-7-luxu.kernel@bytedance.com> Hi Xu, kernel test robot noticed the following build errors: [auto build test ERROR on robh/for-next] [also build test ERROR on kvm/queue kvm/next linus/master v6.17-rc6] [cannot apply to kvm/linux-next] [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/Xu-Lu/riscv-add-ISA-extension-parsing-for-Zalasr/20250919-154304 base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next patch link: https://lore.kernel.org/r/20250919073714.83063-7-luxu.kernel%40bytedance.com patch subject: [PATCH v3 6/8] riscv: Apply acquire/release semantics to arch_xchg/arch_cmpxchg operations config: riscv-randconfig-002-20250920 (https://download.01.org/0day-ci/archive/20250920/202509202249.rOR3GJbT-lkp@intel.com/config) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 7c861bcedf61607b6c087380ac711eb7ff918ca6) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250920/202509202249.rOR3GJbT-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/202509202249.rOR3GJbT-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from lib/objpool.c:3: >> include/linux/objpool.h:156:7: error: invalid .org offset '1528' (at offset '1532') 156 | if (try_cmpxchg_release(&slot->head, &head, head + 1)) | ^ include/linux/atomic/atomic-instrumented.h:4899:2: note: expanded from macro 'try_cmpxchg_release' 4899 | raw_try_cmpxchg_release(__ai_ptr, __ai_oldp, __VA_ARGS__); \ | ^ include/linux/atomic/atomic-arch-fallback.h:228:9: note: expanded from macro 'raw_try_cmpxchg_release' 228 | ___r = raw_cmpxchg_release((_ptr), ___o, (_new)); \ | ^ include/linux/atomic/atomic-arch-fallback.h:77:29: note: expanded from macro 'raw_cmpxchg_release' 77 | #define raw_cmpxchg_release arch_cmpxchg_release | ^ note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) arch/riscv/include/asm/alternative-macros.h:104:2: note: expanded from macro '_ALTERNATIVE_CFG' 104 | __ALTERNATIVE_CFG(old_c, new_c, vendor_id, patch_id, IS_ENABLED(CONFIG_k)) | ^ arch/riscv/include/asm/alternative-macros.h:94:2: note: expanded from macro '__ALTERNATIVE_CFG' 94 | ALT_NEW_CONTENT(vendor_id, patch_id, enable, new_c) | ^ arch/riscv/include/asm/alternative-macros.h:81:3: note: expanded from macro 'ALT_NEW_CONTENT' 81 | ".org . - (887b - 886b) + (889b - 888b)\n" \ | ^ :27:6: note: instantiated into assembly here 27 | .org . - (887b - 886b) + (889b - 888b) | ^ In file included from lib/objpool.c:3: >> include/linux/objpool.h:156:7: error: invalid .org offset '1528' (at offset '1532') 156 | if (try_cmpxchg_release(&slot->head, &head, head + 1)) | ^ include/linux/atomic/atomic-instrumented.h:4899:2: note: expanded from macro 'try_cmpxchg_release' 4899 | raw_try_cmpxchg_release(__ai_ptr, __ai_oldp, __VA_ARGS__); \ | ^ include/linux/atomic/atomic-arch-fallback.h:228:9: note: expanded from macro 'raw_try_cmpxchg_release' 228 | ___r = raw_cmpxchg_release((_ptr), ___o, (_new)); \ | ^ include/linux/atomic/atomic-arch-fallback.h:77:29: note: expanded from macro 'raw_cmpxchg_release' 77 | #define raw_cmpxchg_release arch_cmpxchg_release | ^ note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) arch/riscv/include/asm/alternative-macros.h:104:2: note: expanded from macro '_ALTERNATIVE_CFG' 104 | __ALTERNATIVE_CFG(old_c, new_c, vendor_id, patch_id, IS_ENABLED(CONFIG_k)) | ^ arch/riscv/include/asm/alternative-macros.h:94:2: note: expanded from macro '__ALTERNATIVE_CFG' 94 | ALT_NEW_CONTENT(vendor_id, patch_id, enable, new_c) | ^ arch/riscv/include/asm/alternative-macros.h:81:3: note: expanded from macro 'ALT_NEW_CONTENT' 81 | ".org . - (887b - 886b) + (889b - 888b)\n" \ | ^ :27:6: note: instantiated into assembly here 27 | .org . - (887b - 886b) + (889b - 888b) | ^ 2 errors generated. -- >> lib/generic-radix-tree.c:53:12: error: invalid .org offset '1850' (at offset '1854') 53 | if ((v = cmpxchg_release(&radix->root, r, new_root)) == r) { | ^ include/linux/atomic/atomic-instrumented.h:4803:2: note: expanded from macro 'cmpxchg_release' 4803 | raw_cmpxchg_release(__ai_ptr, __VA_ARGS__); \ | ^ include/linux/atomic/atomic-arch-fallback.h:77:29: note: expanded from macro 'raw_cmpxchg_release' 77 | #define raw_cmpxchg_release arch_cmpxchg_release | ^ arch/riscv/include/asm/cmpxchg.h:265:2: note: expanded from macro 'arch_cmpxchg_release' 265 | _arch_cmpxchg((ptr), (o), (n), \ | ^ note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) arch/riscv/include/asm/alternative-macros.h:104:2: note: expanded from macro '_ALTERNATIVE_CFG' 104 | __ALTERNATIVE_CFG(old_c, new_c, vendor_id, patch_id, IS_ENABLED(CONFIG_k)) | ^ arch/riscv/include/asm/alternative-macros.h:94:2: note: expanded from macro '__ALTERNATIVE_CFG' 94 | ALT_NEW_CONTENT(vendor_id, patch_id, enable, new_c) | ^ arch/riscv/include/asm/alternative-macros.h:81:3: note: expanded from macro 'ALT_NEW_CONTENT' 81 | ".org . - (887b - 886b) + (889b - 888b)\n" \ | ^ :27:6: note: instantiated into assembly here 27 | .org . - (887b - 886b) + (889b - 888b) | ^ lib/generic-radix-tree.c:74:14: error: invalid .org offset '1862' (at offset '1866') 74 | if (!(n = cmpxchg_release(p, NULL, new_node))) | ^ include/linux/atomic/atomic-instrumented.h:4803:2: note: expanded from macro 'cmpxchg_release' 4803 | raw_cmpxchg_release(__ai_ptr, __VA_ARGS__); \ | ^ include/linux/atomic/atomic-arch-fallback.h:77:29: note: expanded from macro 'raw_cmpxchg_release' 77 | #define raw_cmpxchg_release arch_cmpxchg_release | ^ arch/riscv/include/asm/cmpxchg.h:265:2: note: expanded from macro 'arch_cmpxchg_release' 265 | _arch_cmpxchg((ptr), (o), (n), \ | ^ note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) arch/riscv/include/asm/alternative-macros.h:104:2: note: expanded from macro '_ALTERNATIVE_CFG' 104 | __ALTERNATIVE_CFG(old_c, new_c, vendor_id, patch_id, IS_ENABLED(CONFIG_k)) | ^ arch/riscv/include/asm/alternative-macros.h:94:2: note: expanded from macro '__ALTERNATIVE_CFG' 94 | ALT_NEW_CONTENT(vendor_id, patch_id, enable, new_c) | ^ arch/riscv/include/asm/alternative-macros.h:81:3: note: expanded from macro 'ALT_NEW_CONTENT' 81 | ".org . - (887b - 886b) + (889b - 888b)\n" \ | ^ :27:6: note: instantiated into assembly here 27 | .org . - (887b - 886b) + (889b - 888b) | ^ >> lib/generic-radix-tree.c:53:12: error: invalid .org offset '1850' (at offset '1854') 53 | if ((v = cmpxchg_release(&radix->root, r, new_root)) == r) { | ^ include/linux/atomic/atomic-instrumented.h:4803:2: note: expanded from macro 'cmpxchg_release' 4803 | raw_cmpxchg_release(__ai_ptr, __VA_ARGS__); \ | ^ include/linux/atomic/atomic-arch-fallback.h:77:29: note: expanded from macro 'raw_cmpxchg_release' 77 | #define raw_cmpxchg_release arch_cmpxchg_release | ^ arch/riscv/include/asm/cmpxchg.h:265:2: note: expanded from macro 'arch_cmpxchg_release' 265 | _arch_cmpxchg((ptr), (o), (n), \ | ^ note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) arch/riscv/include/asm/alternative-macros.h:104:2: note: expanded from macro '_ALTERNATIVE_CFG' 104 | __ALTERNATIVE_CFG(old_c, new_c, vendor_id, patch_id, IS_ENABLED(CONFIG_k)) | ^ arch/riscv/include/asm/alternative-macros.h:94:2: note: expanded from macro '__ALTERNATIVE_CFG' 94 | ALT_NEW_CONTENT(vendor_id, patch_id, enable, new_c) | ^ arch/riscv/include/asm/alternative-macros.h:81:3: note: expanded from macro 'ALT_NEW_CONTENT' 81 | ".org . - (887b - 886b) + (889b - 888b)\n" \ | ^ :27:6: note: instantiated into assembly here 27 | .org . - (887b - 886b) + (889b - 888b) | ^ lib/generic-radix-tree.c:74:14: error: invalid .org offset '1862' (at offset '1866') 74 | if (!(n = cmpxchg_release(p, NULL, new_node))) | ^ include/linux/atomic/atomic-instrumented.h:4803:2: note: expanded from macro 'cmpxchg_release' 4803 | raw_cmpxchg_release(__ai_ptr, __VA_ARGS__); \ | ^ include/linux/atomic/atomic-arch-fallback.h:77:29: note: expanded from macro 'raw_cmpxchg_release' 77 | #define raw_cmpxchg_release arch_cmpxchg_release | ^ arch/riscv/include/asm/cmpxchg.h:265:2: note: expanded from macro 'arch_cmpxchg_release' 265 | _arch_cmpxchg((ptr), (o), (n), \ | ^ note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) arch/riscv/include/asm/alternative-macros.h:104:2: note: expanded from macro '_ALTERNATIVE_CFG' 104 | __ALTERNATIVE_CFG(old_c, new_c, vendor_id, patch_id, IS_ENABLED(CONFIG_k)) | ^ arch/riscv/include/asm/alternative-macros.h:94:2: note: expanded from macro '__ALTERNATIVE_CFG' 94 | ALT_NEW_CONTENT(vendor_id, patch_id, enable, new_c) | ^ arch/riscv/include/asm/alternative-macros.h:81:3: note: expanded from macro 'ALT_NEW_CONTENT' 81 | ".org . - (887b - 886b) + (889b - 888b)\n" \ | ^ :27:6: note: instantiated into assembly here 27 | .org . - (887b - 886b) + (889b - 888b) | ^ 4 errors generated. -- In file included from lib/refcount.c:6: In file included from include/linux/mutex.h:17: In file included from include/linux/lockdep.h:14: In file included from include/linux/smp.h:13: In file included from include/linux/cpumask.h:14: In file included from include/linux/atomic.h:80: >> include/linux/atomic/atomic-arch-fallback.h:2083:9: error: invalid .org offset '528' (at offset '532') 2083 | return raw_cmpxchg_release(&v->counter, old, new); | ^ include/linux/atomic/atomic-arch-fallback.h:77:29: note: expanded from macro 'raw_cmpxchg_release' 77 | #define raw_cmpxchg_release arch_cmpxchg_release | ^ arch/riscv/include/asm/cmpxchg.h:265:2: note: expanded from macro 'arch_cmpxchg_release' 265 | _arch_cmpxchg((ptr), (o), (n), \ | ^ arch/riscv/include/asm/cmpxchg.h:238:3: note: expanded from macro '_arch_cmpxchg' 238 | __arch_cmpxchg(".w" lr_sfx, ".w" sc_sfx, ".w" cas_sfx, \ | ^ note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) arch/riscv/include/asm/alternative-macros.h:104:2: note: expanded from macro '_ALTERNATIVE_CFG' 104 | __ALTERNATIVE_CFG(old_c, new_c, vendor_id, patch_id, IS_ENABLED(CONFIG_k)) | ^ arch/riscv/include/asm/alternative-macros.h:94:2: note: expanded from macro '__ALTERNATIVE_CFG' 94 | ALT_NEW_CONTENT(vendor_id, patch_id, enable, new_c) | ^ arch/riscv/include/asm/alternative-macros.h:81:3: note: expanded from macro 'ALT_NEW_CONTENT' 81 | ".org . - (887b - 886b) + (889b - 888b)\n" \ | ^ :27:6: note: instantiated into assembly here 27 | .org . - (887b - 886b) + (889b - 888b) | ^ In file included from lib/refcount.c:6: In file included from include/linux/mutex.h:17: In file included from include/linux/lockdep.h:14: In file included from include/linux/smp.h:13: In file included from include/linux/cpumask.h:14: In file included from include/linux/atomic.h:80: include/linux/atomic/atomic-arch-fallback.h:2083:9: error: invalid .org offset '540' (at offset '544') 2083 | return raw_cmpxchg_release(&v->counter, old, new); | ^ include/linux/atomic/atomic-arch-fallback.h:77:29: note: expanded from macro 'raw_cmpxchg_release' 77 | #define raw_cmpxchg_release arch_cmpxchg_release | ^ arch/riscv/include/asm/cmpxchg.h:265:2: note: expanded from macro 'arch_cmpxchg_release' 265 | _arch_cmpxchg((ptr), (o), (n), \ | ^ arch/riscv/include/asm/cmpxchg.h:238:3: note: expanded from macro '_arch_cmpxchg' 238 | __arch_cmpxchg(".w" lr_sfx, ".w" sc_sfx, ".w" cas_sfx, \ | ^ note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) arch/riscv/include/asm/alternative-macros.h:104:2: note: expanded from macro '_ALTERNATIVE_CFG' 104 | __ALTERNATIVE_CFG(old_c, new_c, vendor_id, patch_id, IS_ENABLED(CONFIG_k)) | ^ arch/riscv/include/asm/alternative-macros.h:94:2: note: expanded from macro '__ALTERNATIVE_CFG' 94 | ALT_NEW_CONTENT(vendor_id, patch_id, enable, new_c) | ^ arch/riscv/include/asm/alternative-macros.h:81:3: note: expanded from macro 'ALT_NEW_CONTENT' 81 | ".org . - (887b - 886b) + (889b - 888b)\n" \ | ^ :27:6: note: instantiated into assembly here 27 | .org . - (887b - 886b) + (889b - 888b) | ^ In file included from lib/refcount.c:6: In file included from include/linux/mutex.h:17: In file included from include/linux/lockdep.h:14: In file included from include/linux/smp.h:13: In file included from include/linux/cpumask.h:14: In file included from include/linux/atomic.h:80: >> include/linux/atomic/atomic-arch-fallback.h:2083:9: error: invalid .org offset '528' (at offset '532') 2083 | return raw_cmpxchg_release(&v->counter, old, new); | ^ include/linux/atomic/atomic-arch-fallback.h:77:29: note: expanded from macro 'raw_cmpxchg_release' 77 | #define raw_cmpxchg_release arch_cmpxchg_release | ^ arch/riscv/include/asm/cmpxchg.h:265:2: note: expanded from macro 'arch_cmpxchg_release' 265 | _arch_cmpxchg((ptr), (o), (n), \ | ^ arch/riscv/include/asm/cmpxchg.h:238:3: note: expanded from macro '_arch_cmpxchg' 238 | __arch_cmpxchg(".w" lr_sfx, ".w" sc_sfx, ".w" cas_sfx, \ | ^ note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) arch/riscv/include/asm/alternative-macros.h:104:2: note: expanded from macro '_ALTERNATIVE_CFG' 104 | __ALTERNATIVE_CFG(old_c, new_c, vendor_id, patch_id, IS_ENABLED(CONFIG_k)) | ^ arch/riscv/include/asm/alternative-macros.h:94:2: note: expanded from macro '__ALTERNATIVE_CFG' 94 | ALT_NEW_CONTENT(vendor_id, patch_id, enable, new_c) | ^ arch/riscv/include/asm/alternative-macros.h:81:3: note: expanded from macro 'ALT_NEW_CONTENT' 81 | ".org . - (887b - 886b) + (889b - 888b)\n" \ | ^ :27:6: note: instantiated into assembly here 27 | .org . - (887b - 886b) + (889b - 888b) | ^ In file included from lib/refcount.c:6: In file included from include/linux/mutex.h:17: In file included from include/linux/lockdep.h:14: In file included from include/linux/smp.h:13: In file included from include/linux/cpumask.h:14: In file included from include/linux/atomic.h:80: include/linux/atomic/atomic-arch-fallback.h:2083:9: error: invalid .org offset '540' (at offset '544') 2083 | return raw_cmpxchg_release(&v->counter, old, new); | ^ include/linux/atomic/atomic-arch-fallback.h:77:29: note: expanded from macro 'raw_cmpxchg_release' 77 | #define raw_cmpxchg_release arch_cmpxchg_release | ^ arch/riscv/include/asm/cmpxchg.h:265:2: note: expanded from macro 'arch_cmpxchg_release' 265 | _arch_cmpxchg((ptr), (o), (n), \ | ^ arch/riscv/include/asm/cmpxchg.h:238:3: note: expanded from macro '_arch_cmpxchg' 238 | __arch_cmpxchg(".w" lr_sfx, ".w" sc_sfx, ".w" cas_sfx, \ | ^ note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) arch/riscv/include/asm/alternative-macros.h:104:2: note: expanded from macro '_ALTERNATIVE_CFG' 104 | __ALTERNATIVE_CFG(old_c, new_c, vendor_id, patch_id, IS_ENABLED(CONFIG_k)) | ^ arch/riscv/include/asm/alternative-macros.h:94:2: note: expanded from macro '__ALTERNATIVE_CFG' 94 | ALT_NEW_CONTENT(vendor_id, patch_id, enable, new_c) | ^ arch/riscv/include/asm/alternative-macros.h:81:3: note: expanded from macro 'ALT_NEW_CONTENT' 81 | ".org . - (887b - 886b) + (889b - 888b)\n" \ | ^ :27:6: note: instantiated into assembly here 27 | .org . - (887b - 886b) + (889b - 888b) | ^ 4 errors generated. -- >> fs/overlayfs/file.c:147:10: error: invalid .org offset '3640' (at offset '3644') 147 | old = cmpxchg_release(&of->upperfile, NULL, upperfile); | ^ include/linux/atomic/atomic-instrumented.h:4803:2: note: expanded from macro 'cmpxchg_release' 4803 | raw_cmpxchg_release(__ai_ptr, __VA_ARGS__); \ | ^ include/linux/atomic/atomic-arch-fallback.h:77:29: note: expanded from macro 'raw_cmpxchg_release' 77 | #define raw_cmpxchg_release arch_cmpxchg_release | ^ arch/riscv/include/asm/cmpxchg.h:265:2: note: expanded from macro 'arch_cmpxchg_release' 265 | _arch_cmpxchg((ptr), (o), (n), \ | ^ note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) arch/riscv/include/asm/alternative-macros.h:104:2: note: expanded from macro '_ALTERNATIVE_CFG' 104 | __ALTERNATIVE_CFG(old_c, new_c, vendor_id, patch_id, IS_ENABLED(CONFIG_k)) | ^ arch/riscv/include/asm/alternative-macros.h:94:2: note: expanded from macro '__ALTERNATIVE_CFG' 94 | ALT_NEW_CONTENT(vendor_id, patch_id, enable, new_c) | ^ arch/riscv/include/asm/alternative-macros.h:81:3: note: expanded from macro 'ALT_NEW_CONTENT' 81 | ".org . - (887b - 886b) + (889b - 888b)\n" \ | ^ :27:6: note: instantiated into assembly here 27 | .org . - (887b - 886b) + (889b - 888b) | ^ >> fs/overlayfs/file.c:147:10: error: invalid .org offset '3640' (at offset '3644') 147 | old = cmpxchg_release(&of->upperfile, NULL, upperfile); | ^ include/linux/atomic/atomic-instrumented.h:4803:2: note: expanded from macro 'cmpxchg_release' 4803 | raw_cmpxchg_release(__ai_ptr, __VA_ARGS__); \ | ^ include/linux/atomic/atomic-arch-fallback.h:77:29: note: expanded from macro 'raw_cmpxchg_release' 77 | #define raw_cmpxchg_release arch_cmpxchg_release | ^ arch/riscv/include/asm/cmpxchg.h:265:2: note: expanded from macro 'arch_cmpxchg_release' 265 | _arch_cmpxchg((ptr), (o), (n), \ | ^ note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) arch/riscv/include/asm/alternative-macros.h:104:2: note: expanded from macro '_ALTERNATIVE_CFG' 104 | __ALTERNATIVE_CFG(old_c, new_c, vendor_id, patch_id, IS_ENABLED(CONFIG_k)) | ^ arch/riscv/include/asm/alternative-macros.h:94:2: note: expanded from macro '__ALTERNATIVE_CFG' 94 | ALT_NEW_CONTENT(vendor_id, patch_id, enable, new_c) | ^ arch/riscv/include/asm/alternative-macros.h:81:3: note: expanded from macro 'ALT_NEW_CONTENT' 81 | ".org . - (887b - 886b) + (889b - 888b)\n" \ | ^ :27:6: note: instantiated into assembly here 27 | .org . - (887b - 886b) + (889b - 888b) | ^ 2 errors generated. .. vim +156 include/linux/objpool.h b4edb8d2d4647a wuqiang.matt 2023-10-17 100 b4edb8d2d4647a wuqiang.matt 2023-10-17 101 /** b4edb8d2d4647a wuqiang.matt 2023-10-17 102 * objpool_init() - initialize objpool and pre-allocated objects b4edb8d2d4647a wuqiang.matt 2023-10-17 103 * @pool: the object pool to be initialized, declared by caller b4edb8d2d4647a wuqiang.matt 2023-10-17 104 * @nr_objs: total objects to be pre-allocated by this object pool b4edb8d2d4647a wuqiang.matt 2023-10-17 105 * @object_size: size of an object (should be > 0) b4edb8d2d4647a wuqiang.matt 2023-10-17 106 * @gfp: flags for memory allocation (via kmalloc or vmalloc) b4edb8d2d4647a wuqiang.matt 2023-10-17 107 * @context: user context for object initialization callback b4edb8d2d4647a wuqiang.matt 2023-10-17 108 * @objinit: object initialization callback for extra setup b4edb8d2d4647a wuqiang.matt 2023-10-17 109 * @release: cleanup callback for extra cleanup task b4edb8d2d4647a wuqiang.matt 2023-10-17 110 * b4edb8d2d4647a wuqiang.matt 2023-10-17 111 * return value: 0 for success, otherwise error code b4edb8d2d4647a wuqiang.matt 2023-10-17 112 * b4edb8d2d4647a wuqiang.matt 2023-10-17 113 * All pre-allocated objects are to be zeroed after memory allocation. b4edb8d2d4647a wuqiang.matt 2023-10-17 114 * Caller could do extra initialization in objinit callback. objinit() b4edb8d2d4647a wuqiang.matt 2023-10-17 115 * will be called just after slot allocation and called only once for b4edb8d2d4647a wuqiang.matt 2023-10-17 116 * each object. After that the objpool won't touch any content of the b4edb8d2d4647a wuqiang.matt 2023-10-17 117 * objects. It's caller's duty to perform reinitialization after each b4edb8d2d4647a wuqiang.matt 2023-10-17 118 * pop (object allocation) or do clearance before each push (object b4edb8d2d4647a wuqiang.matt 2023-10-17 119 * reclamation). b4edb8d2d4647a wuqiang.matt 2023-10-17 120 */ b4edb8d2d4647a wuqiang.matt 2023-10-17 121 int objpool_init(struct objpool_head *pool, int nr_objs, int object_size, b4edb8d2d4647a wuqiang.matt 2023-10-17 122 gfp_t gfp, void *context, objpool_init_obj_cb objinit, b4edb8d2d4647a wuqiang.matt 2023-10-17 123 objpool_fini_cb release); b4edb8d2d4647a wuqiang.matt 2023-10-17 124 a3b00f10da808b Andrii Nakryiko 2024-04-24 125 /* try to retrieve object from slot */ a3b00f10da808b Andrii Nakryiko 2024-04-24 126 static inline void *__objpool_try_get_slot(struct objpool_head *pool, int cpu) a3b00f10da808b Andrii Nakryiko 2024-04-24 127 { a3b00f10da808b Andrii Nakryiko 2024-04-24 128 struct objpool_slot *slot = pool->cpu_slots[cpu]; a3b00f10da808b Andrii Nakryiko 2024-04-24 129 /* load head snapshot, other cpus may change it */ a3b00f10da808b Andrii Nakryiko 2024-04-24 130 uint32_t head = smp_load_acquire(&slot->head); a3b00f10da808b Andrii Nakryiko 2024-04-24 131 a3b00f10da808b Andrii Nakryiko 2024-04-24 132 while (head != READ_ONCE(slot->last)) { a3b00f10da808b Andrii Nakryiko 2024-04-24 133 void *obj; a3b00f10da808b Andrii Nakryiko 2024-04-24 134 a3b00f10da808b Andrii Nakryiko 2024-04-24 135 /* a3b00f10da808b Andrii Nakryiko 2024-04-24 136 * data visibility of 'last' and 'head' could be out of a3b00f10da808b Andrii Nakryiko 2024-04-24 137 * order since memory updating of 'last' and 'head' are a3b00f10da808b Andrii Nakryiko 2024-04-24 138 * performed in push() and pop() independently a3b00f10da808b Andrii Nakryiko 2024-04-24 139 * a3b00f10da808b Andrii Nakryiko 2024-04-24 140 * before any retrieving attempts, pop() must guarantee a3b00f10da808b Andrii Nakryiko 2024-04-24 141 * 'last' is behind 'head', that is to say, there must a3b00f10da808b Andrii Nakryiko 2024-04-24 142 * be available objects in slot, which could be ensured a3b00f10da808b Andrii Nakryiko 2024-04-24 143 * by condition 'last != head && last - head <= nr_objs' a3b00f10da808b Andrii Nakryiko 2024-04-24 144 * that is equivalent to 'last - head - 1 < nr_objs' as a3b00f10da808b Andrii Nakryiko 2024-04-24 145 * 'last' and 'head' are both unsigned int32 a3b00f10da808b Andrii Nakryiko 2024-04-24 146 */ a3b00f10da808b Andrii Nakryiko 2024-04-24 147 if (READ_ONCE(slot->last) - head - 1 >= pool->nr_objs) { a3b00f10da808b Andrii Nakryiko 2024-04-24 148 head = READ_ONCE(slot->head); a3b00f10da808b Andrii Nakryiko 2024-04-24 149 continue; a3b00f10da808b Andrii Nakryiko 2024-04-24 150 } a3b00f10da808b Andrii Nakryiko 2024-04-24 151 a3b00f10da808b Andrii Nakryiko 2024-04-24 152 /* obj must be retrieved before moving forward head */ a3b00f10da808b Andrii Nakryiko 2024-04-24 153 obj = READ_ONCE(slot->entries[head & slot->mask]); a3b00f10da808b Andrii Nakryiko 2024-04-24 154 a3b00f10da808b Andrii Nakryiko 2024-04-24 155 /* move head forward to mark it's consumption */ a3b00f10da808b Andrii Nakryiko 2024-04-24 @156 if (try_cmpxchg_release(&slot->head, &head, head + 1)) a3b00f10da808b Andrii Nakryiko 2024-04-24 157 return obj; a3b00f10da808b Andrii Nakryiko 2024-04-24 158 } a3b00f10da808b Andrii Nakryiko 2024-04-24 159 a3b00f10da808b Andrii Nakryiko 2024-04-24 160 return NULL; a3b00f10da808b Andrii Nakryiko 2024-04-24 161 } a3b00f10da808b Andrii Nakryiko 2024-04-24 162 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki