From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.17]) (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 67C5F2222CB for ; Tue, 30 Dec 2025 11:33:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.17 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767094437; cv=none; b=FVWSgWjrvYSCB/CKSlhepKJjPEVZo16wD05IHq9nbqiwmebGl3rkxjsHT/2fUayN1tTXJFv4a2KFhZcmcr8NiidcdtbQc0gebAndQfNY2ZdnCZHNWENzeMaYMepQeLzQntf0FXylgUsVpydayuK9l1u90CbtfsCFS/YV8vNTcgs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767094437; c=relaxed/simple; bh=90vCph80GamSQvqaj3ce0TOY3UfszZcA+oq7XhD64FM=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type; b=EsC0DBSKb5msR14F55Wd42R1VI/TsFd6k/RgGtRmMDlsyC7DLrbzjiWoY3/+RD5SOBCrpgF7YuRyXTov8QWrImTKyKc22NBEt13JSG5o8mk0ySZY4GMoeySlnuJ1CV2Neq8CIzHxuR5hBmKj48LfPHEfHUPBe865Q3tvGGRGlw4= 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=b6QjEoxt; arc=none smtp.client-ip=192.198.163.17 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="b6QjEoxt" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1767094435; x=1798630435; h=date:from:to:cc:subject:message-id:mime-version: content-transfer-encoding; bh=90vCph80GamSQvqaj3ce0TOY3UfszZcA+oq7XhD64FM=; b=b6QjEoxtiAzratCnRfg317cy4CwKSEvBteFTiXw6YW8wSpkbqiNaoOiA Ul6Qm+4yCRYIyFjAtxhmj1o0v6iCWHp7Vb+yKMPIjYtl9EhbkJ4TJbdrl 750UzpdSGKA4UaPWaor3Ixz5tVIqt8CossWV5v0xLm4KxP7/ke71zihKA ML191vW0BjllJkpWxU0jJJF7dl5mG/iGkYx13zQt+q7DICDSO7kmnQGDs L7h7oRTBR6wSDNM4Ra8ya+Li8RqBdgdxv2i3p4FfVyHQfl5dxa3YSovHu U0NLGBE2A2DhWmzkE/P4aq/mKJtefNu4uMO1+39UP4mJSOORFDBr9fBaY g==; X-CSE-ConnectionGUID: zcNAy6gBQFCzttY4vLJIpA== X-CSE-MsgGUID: vF3qIi+DR6Cbhlo+RcYelQ== X-IronPort-AV: E=McAfee;i="6800,10657,11656"; a="68575562" X-IronPort-AV: E=Sophos;i="6.21,188,1763452800"; d="scan'208";a="68575562" Received: from fmviesa009.fm.intel.com ([10.60.135.149]) by fmvoesa111.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Dec 2025 03:33:54 -0800 X-CSE-ConnectionGUID: Mvy0z8qKTcC27hVxXN7zQg== X-CSE-MsgGUID: 0GuvjnmZT4iYl0eH44AyEw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,188,1763452800"; d="scan'208";a="201667754" Received: from lkp-server01.sh.intel.com (HELO c9aa31daaa89) ([10.239.97.150]) by fmviesa009.fm.intel.com with ESMTP; 30 Dec 2025 03:33:53 -0800 Received: from kbuild by c9aa31daaa89 with local (Exim 4.98.2) (envelope-from ) id 1vaXz5-000000000L7-0rar; Tue, 30 Dec 2025 11:33:51 +0000 Date: Tue, 30 Dec 2025 19:33:35 +0800 From: kernel test robot To: oe-kbuild@lists.linux.dev Cc: lkp@intel.com, Dan Carpenter Subject: net/core/netmem_priv.h:25 netmem_is_pp() warn: masked condition '(netmem_get_pp_magic(netmem) & ~((((0) + (((((1 << (8 * 8 - 1 - (((-1)) < 1))) - 1) + (1 << (8 * 8 - 1 - (((-1)) < 1))))) << ((1 + __fls((64 + (6767463209352822784)) - (6767463209352822784))... Message-ID: <202512301945.cs89yyZX-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: oe-kbuild@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable BCC: lkp@intel.com CC: oe-kbuild-all@lists.linux.dev CC: linux-kernel@vger.kernel.org TO: Vincent Mailhol CC: Yury Norov tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git = master head: 8640b74557fc8b4c300030f6ccb8cd078f665ec8 commit: 104ea1c84b91c9f452e497ba51602b903711cdd5 bits: unify the non-asm GE= NMASK*() date: 5 months ago :::::: branch date: 15 hours ago :::::: commit date: 5 months ago config: powerpc64-randconfig-r072-20251229 (https://download.01.org/0day-ci= /archive/20251230/202512301945.cs89yyZX-lkp@intel.com/config) compiler: powerpc64-linux-gcc (GCC) 8.5.0 If you fix the issue in a separate patch/commit (i.e. not just a new versio= n of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Reported-by: Dan Carpenter | Closes: https://lore.kernel.org/r/202512301945.cs89yyZX-lkp@intel.com/ New smatch warnings: net/core/netmem_priv.h:25 netmem_is_pp() warn: masked condition '(netmem_ge= t_pp_magic(netmem) & ~((((0) + (((((1 << (8 * 8 - 1 - (((-1)) < 1))) - 1) += (1 << (8 * 8 - 1 - (((-1)) < 1))))) << ((1 + __fls((64 + (6767463209352822= 784)) - (6767463209352822784)))) & ((((1 << (8 * 8 - 1 - (((-1)) < 1))) - 1= ) + (1 << (8 * 8 - 1 - (((-1)) < 1))))) >> ((8 * 8) - 1 - ((((32) < (__ffs(= (6767463209352822784)) - (1 + __fls((64 + (6767463209352822784)) - (6767463= 209352822784))))) ?(32):(__ffs((6767463209352822784)) - (1 + __fls((64 + (6= 767463209352822784)) - (6767463209352822784))))) + ' is always false. Old smatch warnings: net/core/skbuff.c:4812 skb_segment() error: we previously assumed 'list_skb= ' could be null (see line 4747) vim +25 net/core/netmem_priv.h 8ab79ed50cf10f3 Mina Almasry 2024-09-10 22 =20 cd3c93167da0e76 Toke H=C3=B8iland-J=C3=B8rgensen 2025-04-09 23 static inl= ine bool netmem_is_pp(netmem_ref netmem) cd3c93167da0e76 Toke H=C3=B8iland-J=C3=B8rgensen 2025-04-09 24 { cd3c93167da0e76 Toke H=C3=B8iland-J=C3=B8rgensen 2025-04-09 @25 return (n= etmem_get_pp_magic(netmem) & PP_MAGIC_MASK) =3D=3D PP_SIGNATURE; cd3c93167da0e76 Toke H=C3=B8iland-J=C3=B8rgensen 2025-04-09 26 } cd3c93167da0e76 Toke H=C3=B8iland-J=C3=B8rgensen 2025-04-09 27 =20 :::::: The code at line 25 was first introduced by commit :::::: cd3c93167da0e760b5819246eae7a4ea30fd014b page_pool: Move pp_magic ch= eck into helper functions :::::: TO: Toke H=C3=B8iland-J=C3=B8rgensen :::::: CC: Jakub Kicinski --=20 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki