From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) (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 F021315B96F for ; Mon, 5 Aug 2024 16:54:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.19 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722876846; cv=none; b=oVi5PxfhXn9c1gXlUSHUjEjPo97lWdjZpwX9uKf/KlnxQKdgy/PnFlLyh7QX4OeI/xLwpkCe9Sd4kjFfCXOzMeLrQw5Q9bX6mVZeZFM8QVaTBwctkO6PIisI0j+txkJLwU6XHg6pFffkqaEXj8Se1zQv0xEn1DFMosAg7B1Gr6Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722876846; c=relaxed/simple; bh=C53LDstcOe4uYOCd6nxXWgnXiJr8qusDqOZjliOLGNI=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=LW0EW871nfsWmdsoUTHQiWMtvTXOEtvCRAl5PPmnH/x6ZE67/rL09vqmtlXQy6/ZJnodBitw3J6tf3DHMlDdXtPWKOZ5+QUUlJH8iIhznfrYOvRyosXFWdO2aNTZb4f5p/EerUN3LnMcitHlYihFoeTfaEdXyq9iOdfMbSWaQ/I= 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=hGCDlXR2; arc=none smtp.client-ip=198.175.65.19 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="hGCDlXR2" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1722876844; x=1754412844; h=date:from:to:cc:subject:message-id:mime-version; bh=C53LDstcOe4uYOCd6nxXWgnXiJr8qusDqOZjliOLGNI=; b=hGCDlXR26pIRla1mTxvb5z6AkrNdmmmrHqzMzB2PQgLtGLglS2cXrxas 7E55Ftfv0TxjRESO7WNJdbdxMCsBezhi26MLCRW59ELqssss0HXSW4p1u UAM5Yq5+7x3uUQQrmP5JRH+ZaxZnx+zI5evVdgvWJkQzqQv9mCLbuCbdL nYTSg+yETzjnvj03oLfmAnFBTaqwXE8gY6CNTdAt8G/fu0612wAh6+AUv kzjKeY/fwnzsFoCuYixvhFy14djRNT889SgZzI1nReXVDPaL4fxzUymsY UrCIak0b2AzPl24HZjnWm4wc803S/qNpcWN/ZOV956HNJLoJcagm94WSy Q==; X-CSE-ConnectionGUID: LvYBfEVvQpC+lG1FohoefQ== X-CSE-MsgGUID: B8RCvDaGSo6nTB541ZJdSg== X-IronPort-AV: E=McAfee;i="6700,10204,11155"; a="20706734" X-IronPort-AV: E=Sophos;i="6.09,265,1716274800"; d="scan'208";a="20706734" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Aug 2024 09:54:03 -0700 X-CSE-ConnectionGUID: 7PBAsaEUT1SSyPXGdxaXuA== X-CSE-MsgGUID: vvuPr8CkRBmLSE3fxAkd7g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.09,265,1716274800"; d="scan'208";a="93759438" Received: from unknown (HELO b6bf6c95bbab) ([10.239.97.151]) by orviesa001.jf.intel.com with ESMTP; 05 Aug 2024 09:54:03 -0700 Received: from kbuild by b6bf6c95bbab with local (Exim 4.96) (envelope-from ) id 1sb0y8-0003FF-0p; Mon, 05 Aug 2024 16:54:00 +0000 Date: Tue, 6 Aug 2024 00:52:49 +0800 From: kernel test robot To: Jens Axboe Cc: oe-kbuild-all@lists.linux.dev Subject: [axboe-block:rw_iter 24/442] drivers/char/mem.c:209:17: error: 'buf' undeclared; did you mean 'btf'? Message-ID: <202408060034.gmQ1Mobn-lkp@intel.com> Precedence: bulk X-Mailing-List: oe-kbuild-all@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline tree: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git rw_iter head: 449894f5917ad62cb4083d1df948f4f5c92a01da commit: 0df0f0698ee57ecb346482b78672fbe3274b54bf [24/442] char/mem: convert to read/write iterators config: sparc-allnoconfig (https://download.01.org/0day-ci/archive/20240806/202408060034.gmQ1Mobn-lkp@intel.com/config) compiler: sparc-linux-gcc (GCC) 14.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240806/202408060034.gmQ1Mobn-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/202408060034.gmQ1Mobn-lkp@intel.com/ All errors (new ones prefixed by >>): drivers/char/mem.c: In function 'write_mem': >> drivers/char/mem.c:209:17: error: 'buf' undeclared (first use in this function); did you mean 'btf'? 209 | buf += sz; | ^~~ | btf drivers/char/mem.c:209:17: note: each undeclared identifier is reported only once for each function it appears in vim +209 drivers/char/mem.c ^1da177e4c3f415 Linus Torvalds 2005-04-16 187 0df0f0698ee57ec Jens Axboe 2024-04-09 188 static ssize_t write_mem(struct kiocb *iocb, struct iov_iter *from) ^1da177e4c3f415 Linus Torvalds 2005-04-16 189 { 0df0f0698ee57ec Jens Axboe 2024-04-09 190 size_t count = iov_iter_count(from); 0df0f0698ee57ec Jens Axboe 2024-04-09 191 phys_addr_t p = iocb->ki_pos; ^1da177e4c3f415 Linus Torvalds 2005-04-16 192 ssize_t written, sz; ^1da177e4c3f415 Linus Torvalds 2005-04-16 193 unsigned long copied; ^1da177e4c3f415 Linus Torvalds 2005-04-16 194 void *ptr; ^1da177e4c3f415 Linus Torvalds 2005-04-16 195 0df0f0698ee57ec Jens Axboe 2024-04-09 196 if (p != iocb->ki_pos) 08d2d00b291ed4e Petr Tesarik 2014-01-30 197 return -EFBIG; 08d2d00b291ed4e Petr Tesarik 2014-01-30 198 136939a2b5aa430 Bjorn Helgaas 2006-03-26 199 if (!valid_phys_addr_range(p, count)) ^1da177e4c3f415 Linus Torvalds 2005-04-16 200 return -EFAULT; ^1da177e4c3f415 Linus Torvalds 2005-04-16 201 ^1da177e4c3f415 Linus Torvalds 2005-04-16 202 written = 0; ^1da177e4c3f415 Linus Torvalds 2005-04-16 203 ^1da177e4c3f415 Linus Torvalds 2005-04-16 204 #ifdef __ARCH_HAS_NO_PAGE_ZERO_MAPPED ^1da177e4c3f415 Linus Torvalds 2005-04-16 205 /* we don't have page 0 mapped on sparc and m68k.. */ ^1da177e4c3f415 Linus Torvalds 2005-04-16 206 if (p < PAGE_SIZE) { 7fabaddd09ab32a Wu Fengguang 2009-12-14 207 sz = size_inside_page(p, count); ^1da177e4c3f415 Linus Torvalds 2005-04-16 208 /* Hmm. Do something? */ ^1da177e4c3f415 Linus Torvalds 2005-04-16 @209 buf += sz; ^1da177e4c3f415 Linus Torvalds 2005-04-16 210 p += sz; ^1da177e4c3f415 Linus Torvalds 2005-04-16 211 count -= sz; ^1da177e4c3f415 Linus Torvalds 2005-04-16 212 written += sz; ^1da177e4c3f415 Linus Torvalds 2005-04-16 213 } ^1da177e4c3f415 Linus Torvalds 2005-04-16 214 #endif ^1da177e4c3f415 Linus Torvalds 2005-04-16 215 ^1da177e4c3f415 Linus Torvalds 2005-04-16 216 while (count > 0) { a4866aa812518ed Kees Cook 2017-04-05 217 int allowed; a4866aa812518ed Kees Cook 2017-04-05 218 f222318e9c3a315 Wu Fengguang 2009-12-14 219 sz = size_inside_page(p, count); ^1da177e4c3f415 Linus Torvalds 2005-04-16 220 a4866aa812518ed Kees Cook 2017-04-05 221 allowed = page_is_allowed(p >> PAGE_SHIFT); a4866aa812518ed Kees Cook 2017-04-05 222 if (!allowed) e045fb2a988a9a1 venkatesh.pallipadi@intel.com 2008-03-18 223 return -EPERM; e045fb2a988a9a1 venkatesh.pallipadi@intel.com 2008-03-18 224 a4866aa812518ed Kees Cook 2017-04-05 225 /* Skip actual writing when a page is marked as restricted. */ a4866aa812518ed Kees Cook 2017-04-05 226 if (allowed == 1) { ^1da177e4c3f415 Linus Torvalds 2005-04-16 227 /* a4866aa812518ed Kees Cook 2017-04-05 228 * On ia64 if a page has been mapped somewhere as a4866aa812518ed Kees Cook 2017-04-05 229 * uncached, then it must also be accessed uncached a4866aa812518ed Kees Cook 2017-04-05 230 * by the kernel or data corruption may occur. ^1da177e4c3f415 Linus Torvalds 2005-04-16 231 */ ^1da177e4c3f415 Linus Torvalds 2005-04-16 232 ptr = xlate_dev_mem_ptr(p); e045fb2a988a9a1 venkatesh.pallipadi@intel.com 2008-03-18 233 if (!ptr) { e045fb2a988a9a1 venkatesh.pallipadi@intel.com 2008-03-18 234 if (written) e045fb2a988a9a1 venkatesh.pallipadi@intel.com 2008-03-18 235 break; e045fb2a988a9a1 venkatesh.pallipadi@intel.com 2008-03-18 236 return -EFAULT; e045fb2a988a9a1 venkatesh.pallipadi@intel.com 2008-03-18 237 } ^1da177e4c3f415 Linus Torvalds 2005-04-16 238 0df0f0698ee57ec Jens Axboe 2024-04-09 239 copied = copy_from_iter(ptr, sz, from); fa29e97bb8c70fd Wu Fengguang 2009-12-14 240 unxlate_dev_mem_ptr(p, ptr); ^1da177e4c3f415 Linus Torvalds 2005-04-16 241 if (copied) { c654d60e8f0ea13 Jan Beulich 2006-03-25 242 written += sz - copied; c654d60e8f0ea13 Jan Beulich 2006-03-25 243 if (written) c654d60e8f0ea13 Jan Beulich 2006-03-25 244 break; ^1da177e4c3f415 Linus Torvalds 2005-04-16 245 return -EFAULT; ^1da177e4c3f415 Linus Torvalds 2005-04-16 246 } a4866aa812518ed Kees Cook 2017-04-05 247 } e045fb2a988a9a1 venkatesh.pallipadi@intel.com 2008-03-18 248 ^1da177e4c3f415 Linus Torvalds 2005-04-16 249 p += sz; ^1da177e4c3f415 Linus Torvalds 2005-04-16 250 count -= sz; ^1da177e4c3f415 Linus Torvalds 2005-04-16 251 written += sz; 8619e5bdeee8b2c Tetsuo Handa 2019-08-26 252 if (should_stop_iteration()) 8619e5bdeee8b2c Tetsuo Handa 2019-08-26 253 break; ^1da177e4c3f415 Linus Torvalds 2005-04-16 254 } ^1da177e4c3f415 Linus Torvalds 2005-04-16 255 0df0f0698ee57ec Jens Axboe 2024-04-09 256 iocb->ki_pos += written; ^1da177e4c3f415 Linus Torvalds 2005-04-16 257 return written; ^1da177e4c3f415 Linus Torvalds 2005-04-16 258 } ^1da177e4c3f415 Linus Torvalds 2005-04-16 259 :::::: The code at line 209 was first introduced by commit :::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2 :::::: TO: Linus Torvalds :::::: CC: Linus Torvalds -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki