From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.13]) (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 528A536680F for ; Tue, 24 Mar 2026 12:53:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.13 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774356794; cv=none; b=c1xQZg3udSkMstWGB9BZn0M553zYYCRa6Cjda81WienH5JvBDW2v4MvtAnM3Q7UUpGXUiME9K7UNcxBuT/n+rmI0j36PvFsAuA6LnZUeGq0U4e5TlBC9XSMx0OIiSLWBlZxQsuZ7IxJYeF8Odh6eMAQTLvCfdMb20wTK4V+Ih/s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774356794; c=relaxed/simple; bh=SidBc3+wwESDlb4vTI/IgseuqJCGALMx23QQtEsAuG4=; h=Date:From:To:Cc:Subject:Message-ID; b=GBKAvOOzOX6vN4rlRrobS24haFgYBNL0FFp4uE/PRpTmKr80Zkm0Aln7WTfY0Q7Y/p0UFqnK3Prx8qfX76HqnVgtc32Nk70dBtvhVG62kqhFtYtE/jzoXc2zH6YTxqJQ0WW7r7PA8YEb8uZIYHVpdsmcZEXeSE3YxkU2LR4ZpTs= 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=d5DtNC68; arc=none smtp.client-ip=192.198.163.13 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="d5DtNC68" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1774356793; x=1805892793; h=date:from:to:cc:subject:message-id; bh=SidBc3+wwESDlb4vTI/IgseuqJCGALMx23QQtEsAuG4=; b=d5DtNC68ChUH1mQ9Dp/lYPxQOTLabI+XabBkD/SkYDwqKvdrhNG79aoP vFhlKeKLS9V+t/6FCvWTq2BnjVQws+gb0J96XUe21HC0uZ/sCLK8sk+AJ hGywmUdfdojOt4QpV6IF0DIrmS8VlbZzSv6HxdrIIraVQ5R9FGaCQlamp LNun4R/9aVdH0HRiwB89ckJ+0canoV1bjpVJtwv6s0FT1WvAaS1jxMkeV siDeYQf6bkcDNwWOdH5VBICxZ/yn8kd+ugtiGGUTKYBwTX9hE2HosQUDY sao9SOqszgD1M9zA7Iz9RUNdM8gW6cWo8iHHLg/LvtCsyNaNu3vmacI1c w==; X-CSE-ConnectionGUID: 4320LbRJQASnlKxVW0dYiQ== X-CSE-MsgGUID: IH+RuOxhSN6PdC+ds5fyJg== X-IronPort-AV: E=McAfee;i="6800,10657,11739"; a="77973222" X-IronPort-AV: E=Sophos;i="6.23,138,1770624000"; d="scan'208";a="77973222" Received: from fmviesa002.fm.intel.com ([10.60.135.142]) by fmvoesa107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Mar 2026 05:53:12 -0700 X-CSE-ConnectionGUID: kH/oTPobTvqxLqSWojYs/g== X-CSE-MsgGUID: tvCuP9fqR46wBJ2idLMkng== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,138,1770624000"; d="scan'208";a="247422645" Received: from lkp-server01.sh.intel.com (HELO 3905d212be1b) ([10.239.97.150]) by fmviesa002.fm.intel.com with ESMTP; 24 Mar 2026 05:53:10 -0700 Received: from kbuild by 3905d212be1b with local (Exim 4.98.2) (envelope-from ) id 1w51Fr-000000004ZD-3otm; Tue, 24 Mar 2026 12:53:07 +0000 Date: Tue, 24 Mar 2026 20:53:07 +0800 From: kernel test robot To: FUJITA Tomonori Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, Boqun Feng Subject: ld.lld: error: undefined symbol: __bad_cmpxchg Message-ID: <202603242052.Jw9rpNUe-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: c369299895a591d96745d6492d4888259b004a9e commit: 164e4b5600b32b4ddeac58bb5b37bc1490a1dce4 rust: helpers: Add i8/i16 atomic try_cmpxchg helpers date: 2 months ago config: arm-randconfig-r064-20260324 (https://download.01.org/0day-ci/archive/20260324/202603242052.Jw9rpNUe-lkp@intel.com/config) compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 054e11d1a17e5ba88bb1a8ef32fad3346e80b186) rustc: rustc 1.88.0 (6b00bc388 2025-06-23) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260324/202603242052.Jw9rpNUe-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/202603242052.Jw9rpNUe-lkp@intel.com/ All errors (new ones prefixed by >>): >> ld.lld: error: undefined symbol: __bad_cmpxchg >>> referenced by helpers.c >>> rust/helpers/helpers.o:(rust_helper_atomic_i16_try_cmpxchg) in archive vmlinux.a -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki