From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 0A604367293 for ; Thu, 13 Aug 2026 08:20:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786609225; cv=none; b=fxahjxCYCL1ulxEcw7FXn58ZsOb33Q/DpBFuuxnfe5Y1LrVHeqmyGv6+9N/eVMIsz9mQMsoe0zXMxbGVcIP3NE+A09vB+SMzDMF+J06WZ8QYHxDrZCVgChQsqFL1Do+w9pEN9c2DqBvmoNyp8Ar1a4jCPYU27AaU2RLJLaZ7JpE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786609225; c=relaxed/simple; bh=MXFUdyK8IZdKYF2Es3JqXH7ozUP1YhgnRFPXrW6P3x4=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=GAfXIjdyei7AH1S3T50XjUxMxSa436oldObupxl+kbUful3zumGuNGi2TDJuzxUJxw3FpgPICwbxZj4r2j69riuDpyL53hCCjuSkqOHxqIMd/RdGNKOC199BL725Y0GrWYxpzZ4IYAX2Pm7IhYgd6aTjDm/tJvhvYJkyg/wkE6w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Sr0GrUAE; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Sr0GrUAE" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 298EC1F000E9; Thu, 13 Aug 2026 08:20:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786609223; bh=BpLKv+HLKMXgHbkxllR3SmVTl3IvJW2Gw7BMJgcyPFA=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=Sr0GrUAEEZbftQUK6bqsx4JCEi6/OxZSbCKAnwmp0ulLlakrFBFF9Im+T1eSpbBPH KOg5jRqMtEkPMKjV2W6LmMKa/OIEw/G58GQ+N5VxENQJWNF0uGv5DDlxYCf+sSekPo Itn3mkvrqOB/lbkgkAZQmcgKHsTNHN+4IDXOxGey8aEUrSKjY7L+Bw+pniCufBLMsB KJQhq2ZRrNbRrveVG+qe1L/fxu5n5vf77Lh1wvVRqfPpnioneAc6JjJbxVtLfNS5Zg nPSG7/RN2K30ABo9Rkc5BXiKSshs/vfaSox3R6ObCZsXS/7fipmN4yi02xC8TY+0j0 V0DpwwZlSz/rg== Message-ID: <450c036c-71fe-4192-a678-995389b845df@kernel.org> Date: Thu, 13 Aug 2026 10:20:17 +0200 Precedence: bulk X-Mailing-List: oe-kbuild-all@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [axboe:for-7.0/block 19/138] block/blk-crypto-fallback.c:154:17: sparse: sparse: cast from restricted blk_status_t To: Christoph Hellwig , kernel test robot Cc: oe-kbuild-all@lists.linux.dev, Jens Axboe , Eric Biggers , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , linuxppc-dev@lists.ozlabs.org References: <202606012339.rZAl6Xq8-lkp@intel.com> <20260601152933.GA6444@lst.de> Content-Language: fr-FR From: "Christophe Leroy (CS GROUP)" In-Reply-To: <20260601152933.GA6444@lst.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Hi, Le 01/06/2026 à 17:29, Christoph Hellwig a écrit : > I think powerpc really need to pick the tricks from other architectures > to make cmpxchg work on __bitwise fields. Thanks, Should be fixed by https://lore.kernel.org/all/289a7ffac9cb5b6d26a57fdc26605bf725285302.1786608980.git.chleroy@kernel.org/ Based on commit 212dd8477653 ("arm64: Silence sparse warnings caused by the type casting in (cmp)xchg") Christophe > > On Mon, Jun 01, 2026 at 11:26:16PM +0800, kernel test robot wrote: >> tree: https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.kernel.org%2Fpub%2Fscm%2Flinux%2Fkernel%2Fgit%2Faxboe%2Flinux.git&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7Cb09ed76c517f4ac2a96a08debff29913%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639159245835365955%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=SCrQIL52YejLyMbT487%2Fu4y7bDdqD3W0NISJGASlqnI%3D&reserved=0 for-7.0/block >> head: 72f4d6fca699a1e35b39c5e5dacac2926d254135 >> commit: b37fbce460ad60b0c4449c1c7566cf24f3016713 [19/138] blk-crypto: optimize bio splitting in blk_crypto_fallback_encrypt_bio >> config: powerpc64-randconfig-r111-20260601 (https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdownload.01.org%2F0day-ci%2Farchive%2F20260601%2F202606012339.rZAl6Xq8-lkp%40intel.com%2Fconfig&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7Cb09ed76c517f4ac2a96a08debff29913%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639159245835742509%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=mcTjhCA7fN2FQAsYEiRRY3xTOyBg%2BNJxAwMqeSERPG4%3D&reserved=0) >> compiler: powerpc64-linux-gcc (GCC) 8.5.0 >> sparse: v0.6.5-rc1 >> reproduce (this is a W=1 build): (https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdownload.01.org%2F0day-ci%2Farchive%2F20260601%2F202606012339.rZAl6Xq8-lkp%40intel.com%2Freproduce&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7Cb09ed76c517f4ac2a96a08debff29913%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639159245835767299%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=3IobnZTPyXIEKog3PvyDf%2Bti4W%2F4jFM8O5QZG%2FVn%2Bkw%3D&reserved=0) >> >> 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://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flore.kernel.org%2Foe-kbuild-all%2F202606012339.rZAl6Xq8-lkp%40intel.com%2F&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7Cb09ed76c517f4ac2a96a08debff29913%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639159245835785008%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=dkHYbj0M7dRIfeyg8uLlJgQlMYbYi91eHIOx5FZOpJ0%3D&reserved=0 >> >> sparse warnings: (new ones prefixed by >>) >>>> block/blk-crypto-fallback.c:154:17: sparse: sparse: cast from restricted blk_status_t >>>> block/blk-crypto-fallback.c:154:17: sparse: sparse: cast from restricted blk_status_t >> block/blk-crypto-fallback.c:154:17: sparse: sparse: cast to restricted blk_status_t >> >> vim +154 block/blk-crypto-fallback.c >> >> 143 >> 144 static void blk_crypto_fallback_encrypt_endio(struct bio *enc_bio) >> 145 { >> 146 struct bio *src_bio = enc_bio->bi_private; >> 147 int i; >> 148 >> 149 for (i = 0; i < enc_bio->bi_vcnt; i++) >> 150 mempool_free(enc_bio->bi_io_vec[i].bv_page, >> 151 blk_crypto_bounce_page_pool); >> 152 >> 153 if (enc_bio->bi_status) >> > 154 cmpxchg(&src_bio->bi_status, 0, enc_bio->bi_status); >> 155 >> 156 bio_put(enc_bio); >> 157 bio_endio(src_bio); >> 158 } >> 159 >> >> -- >> 0-DAY CI Kernel Test Service >> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fintel%2Flkp-tests%2Fwiki&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7Cb09ed76c517f4ac2a96a08debff29913%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639159245835802872%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=4Iyio2M%2Fz52Q9ilcjHSE%2Fmy98xR53NJQm%2FzwwXDH1qo%3D&reserved=0 > ---end quoted text---