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 DABF1419318; Wed, 23 Sep 2026 23:02:52 +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=1790204575; cv=none; b=PTjAmDeLfCJYoUTEudGWuv242TjTRuwvR4DrwF56sRsgiYOdjw7FdH62g8tOgswrvUpHN6MHJePcpcbrcuXiA9iGFk377HlSd7tIGoJ59M4XXU5gp63K2i/g2wYBJDb6MFK7MnJEVQHdbSlgHsYH0lRUVNvb7caToP3AoYu3/wc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790204575; c=relaxed/simple; bh=uAugRGH16wsmxqcx1FqDZnuGBAp7pwo//J+Mwq4oFEc=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=osaonTi76xgyZ4+PcZVO7ZdrnIocsnPMsZfHYFBqTdtDWpyPp86Z5Xls0ftKoEXgrMaMlTBopyHUh9Dlpd5cAisboKgU0ir35pf4DjgOoRx3tuifz35aPUU99u4MUYN8VPujixYuw4rguxHdJAA4RuW6hrSYvTmI+pQ9oJoJISM= 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=ixPri4BZ; 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="ixPri4BZ" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1790204573; x=1821740573; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=uAugRGH16wsmxqcx1FqDZnuGBAp7pwo//J+Mwq4oFEc=; b=ixPri4BZezrLPEz+VC621Fd3eEGzfJT+ZqKyjz2cqtkY8WPDGs8CaevH 44g+g9Y3sYlL1LKuk0CapiBrDjWpumu5lkTkhmE0nTkuymnvnEuqQLHYR Qtxhn0GbmSvW8xnqmXXxoiyekaDeTSfnamQKN3GQQs1hkObs30S4RnAxe 331CQknl/224c8gwh24UQbT4lNYoLqnmd+IUXCP37CsOGl2+iGBmVKPHs phgVjjQSCj14zujYU3Ls6F+KNwGp32H5orujWMEbhmiXfu3+Kq6N+SQrv 8JS2Lh7X3STXL6G3xnmwrk54nxGM5Qo2cTinC6iZMOWUSBRuTPTInXqrJ Q==; X-CSE-ConnectionGUID: l9VdUJWHQzKQ/TIPL4bg1Q== X-CSE-MsgGUID: MRzI7J98TmGw5pMcjQzaeQ== X-IronPort-AV: E=McAfee;i="6800,10657,11914"; a="93454287" X-IronPort-AV: E=Sophos;i="6.27,119,1787036400"; d="scan'208";a="93454287" Received: from fmviesa008.fm.intel.com ([10.60.135.148]) by fmvoesa107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Sep 2026 16:02:51 -0700 X-CSE-ConnectionGUID: oPAwhSaNQ8OV80vqHZFIwg== X-CSE-MsgGUID: tpjFAtejQumZhlCrR36mjQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,119,1787036400"; d="scan'208";a="273998590" Received: from lkp-server01.sh.intel.com (HELO 462990a40a85) ([10.239.97.150]) by fmviesa008.fm.intel.com with ESMTP; 23 Sep 2026 16:02:49 -0700 Received: from kbuild by 462990a40a85 with local (Exim 4.98.2) (envelope-from ) id 1x9VzC-00000000HvW-2OuA; Wed, 23 Sep 2026 23:02:46 +0000 Date: Thu, 24 Sep 2026 07:02:33 +0800 From: kernel test robot To: Nguyen Ngoc Thang , Dmitry Torokhov Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, Nguyen Ngoc Thang , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, syzbot+1075f6dc93f398c1857e@syzkaller.appspotmail.com Subject: Re: [PATCH] Input: serio - don't sleep on serio_mutex from drvctl_store() Message-ID: <202609240622.tn7TrVy2-lkp@intel.com> References: <20260919124604.210505-1-ngocthang2710.1999@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@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: <20260919124604.210505-1-ngocthang2710.1999@gmail.com> Hi Nguyen, kernel test robot noticed the following build errors: [auto build test ERROR on dtor-input/next] [also build test ERROR on dtor-input/for-linus linus/master v7.3-rc4 next-20260922] [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/Nguyen-Ngoc-Thang/Input-serio-don-t-sleep-on-serio_mutex-from-drvctl_store/20260919-194604 base: https://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git next patch link: https://lore.kernel.org/r/20260919124604.210505-1-ngocthang2710.1999%40gmail.com patch subject: [PATCH] Input: serio - don't sleep on serio_mutex from drvctl_store() config: x86_64-kexec (https://download.01.org/0day-ci/archive/20260924/202609240622.tn7TrVy2-lkp@intel.com/config) compiler: clang version 22.1.3 (https://github.com/llvm/llvm-project e9846648fd6183ee6d8cbdb4502213fcf902a211) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260924/202609240622.tn7TrVy2-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/202609240622.tn7TrVy2-lkp@intel.com/ All errors (new ones prefixed by >>): >> drivers/input/serio/serio.c:361:38: error: call to undeclared function 'restart_syscall'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 361 | scoped_cond_guard(mutex_try, return restart_syscall(), &serio_mutex) { | ^ 1 error generated. vim +/restart_syscall +361 drivers/input/serio/serio.c 353 354 static ssize_t drvctl_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 355 { 356 struct serio *serio = to_serio_port(dev); 357 struct device_driver *drv; 358 int error; 359 360 /* Port removal holds serio_mutex and drains us: don't wait for it. */ > 361 scoped_cond_guard(mutex_try, return restart_syscall(), &serio_mutex) { 362 if (!strncmp(buf, "none", count)) { 363 serio_disconnect_port(serio); 364 } else if (!strncmp(buf, "reconnect", count)) { 365 serio_reconnect_subtree(serio); 366 } else if (!strncmp(buf, "rescan", count)) { 367 serio_disconnect_port(serio); 368 serio_find_driver(serio); 369 serio_remove_duplicate_events(serio, SERIO_RESCAN_PORT); 370 } else if ((drv = driver_find(buf, &serio_bus)) != NULL) { 371 serio_disconnect_port(serio); 372 error = serio_bind_driver(serio, to_serio_driver(drv)); 373 serio_remove_duplicate_events(serio, SERIO_RESCAN_PORT); 374 if (error) 375 return error; 376 } else { 377 return -EINVAL; 378 } 379 } 380 381 return count; 382 } 383 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki