From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.21]) (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 1E8B826A1DA; Fri, 9 May 2025 07:59:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.21 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746777588; cv=none; b=hcmhSnx9TyNhTi+eY+SvJA5fGIthZV/5UOr69qG18ZvUsUBVtEe9uRRxuUnmIlvhNUMyHfeqP6lQAhQOYRdZquPlw3dxLeLkARGP1OZFHwhxREjd/JnA9NXgK8QU8TBkxea3lVzvi3dKodPWCxDk5sDj/YuyYCQChcm2+QpV+Gw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746777588; c=relaxed/simple; bh=XH5qgIiNV8vC+T96lEpPKyjg4glmUUOxb/545SRV5hU=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=bwvoL3f+gQVPaL0qk1DY9zsL3ZUZXmZubnyCxpoOINzW454GhvnZo7V5/OivnD+tjxrOOBpGUv4q7pzkWupDCijs4neiPD+Bl4xet/Wdi9wcgqbwtlpW6wu8hpnUFXz9vufeyqXPIwkTEXsiP4U2qXUnhPvEQZmjZF7fyiJfmNE= 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=HEJHRgyv; arc=none smtp.client-ip=198.175.65.21 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="HEJHRgyv" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1746777586; x=1778313586; h=date:from:to:cc:subject:message-id:mime-version; bh=XH5qgIiNV8vC+T96lEpPKyjg4glmUUOxb/545SRV5hU=; b=HEJHRgyvHdCBOrpfYnvi/40BTMsTa0237tTWc6anvHAo9/Mt5F0Kg5zu LfZ+dUvrJvD+WhWjUo+Za4rECMw/7JungfpuLZnqBUxAUs47ZLqJ+4MPH cc8au2Ma94o/7LsRP6FkTC3Bj0SWn7ZR0h2s6QivlEohHhFgHsZir96Rr aP6oB7HFwnXprXDKlV+TvlEzhweJ3WI+WYGcWdp5NgZ16I/Ji8XSRhl3k onlugT55DV+UmXPzZ9mtBDuD+L98NsHfbRUJR4lhSGGXQWinBy+8AaSGe 7NOVZIEsNVBWkZKtW17RXOZelw1KMxjdHzdUMP+wmypH2mrkUeHzrvwf1 A==; X-CSE-ConnectionGUID: nFDDaohZT4+EvumLj95OVw== X-CSE-MsgGUID: kNBnMPLCQG2rqbEXBTOz7Q== X-IronPort-AV: E=McAfee;i="6700,10204,11427"; a="48503481" X-IronPort-AV: E=Sophos;i="6.15,274,1739865600"; d="scan'208";a="48503481" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by orvoesa113.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 May 2025 00:59:44 -0700 X-CSE-ConnectionGUID: 3SgJZi6zTPqzTElo4P98vw== X-CSE-MsgGUID: UIKOL4kQQqW9ZW8fJsa1+w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.15,274,1739865600"; d="scan'208";a="173708327" Received: from lkp-server01.sh.intel.com (HELO 1992f890471c) ([10.239.97.150]) by orviesa001.jf.intel.com with ESMTP; 09 May 2025 00:59:42 -0700 Received: from kbuild by 1992f890471c with local (Exim 4.96) (envelope-from ) id 1uDIdw-000BnP-0y; Fri, 09 May 2025 07:59:40 +0000 Date: Fri, 9 May 2025 15:59:18 +0800 From: kernel test robot To: Jisheng Zhang Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, Palmer Dabbelt , Cyril Bur , Alexandre Ghiti Subject: [palmer:for-next 10/25] include/linux/fs.h:3921:15: warning: label followed by a declaration is a C23 extension Message-ID: <202505091520.cze8wv81-lkp@intel.com> Precedence: bulk X-Mailing-List: llvm@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/palmer/linux.git for-next head: 1a3f6980889df3fc90ad3e4a525061d2c138adba commit: f6bff7827a48e59cff1ef98aae72452d65174e0c [10/25] riscv: uaccess: use 'asm_goto_output' for get_user() config: riscv-randconfig-002-20250509 (https://download.01.org/0day-ci/archive/20250509/202505091520.cze8wv81-lkp@intel.com/config) compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project f819f46284f2a79790038e1f6649172789734ae8) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250509/202505091520.cze8wv81-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/202505091520.cze8wv81-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from arch/riscv/kernel/asm-offsets.c:8: In file included from include/linux/mm.h:1221: In file included from include/linux/huge_mm.h:7: >> include/linux/fs.h:3921:15: warning: label followed by a declaration is a C23 extension [-Wc23-extensions] 3921 | if (unlikely(get_user(c, path))) | ^ arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user' 263 | __get_user((x), __p) : \ | ^ arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user' 233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \ | ^ arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error' 196 | __get_user_nocheck(x, ptr, __gu_failed); \ | ^ arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck' 185 | __get_user_8((x), __gu_ptr, label); \ | ^ arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8' 130 | u32 __user *__ptr = (u32 __user *)(ptr); \ | ^ 1 warning generated. -- In file included from fs/ioctl.c:8: In file included from include/linux/syscalls.h:83: In file included from include/uapi/linux/aio_abi.h:31: >> include/linux/fs.h:3921:15: warning: label followed by a declaration is a C23 extension [-Wc23-extensions] 3921 | if (unlikely(get_user(c, path))) | ^ arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user' 263 | __get_user((x), __p) : \ | ^ arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user' 233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \ | ^ arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error' 196 | __get_user_nocheck(x, ptr, __gu_failed); \ | ^ arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck' 185 | __get_user_8((x), __gu_ptr, label); \ | ^ arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8' 130 | u32 __user *__ptr = (u32 __user *)(ptr); \ | ^ >> fs/ioctl.c:69:10: warning: label followed by a declaration is a C23 extension [-Wc23-extensions] 69 | error = get_user(ur_block, p); | ^ arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user' 263 | __get_user((x), __p) : \ | ^ arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user' 233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \ | ^ arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error' 196 | __get_user_nocheck(x, ptr, __gu_failed); \ | ^ arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck' 185 | __get_user_8((x), __gu_ptr, label); \ | ^ arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8' 130 | u32 __user *__ptr = (u32 __user *)(ptr); \ | ^ fs/ioctl.c:346:10: warning: label followed by a declaration is a C23 extension [-Wc23-extensions] 346 | error = get_user(on, argp); | ^ arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user' 263 | __get_user((x), __p) : \ | ^ arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user' 233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \ | ^ arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error' 196 | __get_user_nocheck(x, ptr, __gu_failed); \ | ^ arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck' 185 | __get_user_8((x), __gu_ptr, label); \ | ^ arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8' 130 | u32 __user *__ptr = (u32 __user *)(ptr); \ | ^ fs/ioctl.c:370:10: warning: label followed by a declaration is a C23 extension [-Wc23-extensions] 370 | error = get_user(on, argp); | ^ arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user' 263 | __get_user((x), __p) : \ | ^ arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user' 233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \ | ^ arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error' 196 | __get_user_nocheck(x, ptr, __gu_failed); \ | ^ arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck' 185 | __get_user_8((x), __gu_ptr, label); \ | ^ arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8' 130 | u32 __user *__ptr = (u32 __user *)(ptr); \ | ^ fs/ioctl.c:424:6: warning: label followed by a declaration is a C23 extension [-Wc23-extensions] 424 | if (get_user(count, &argp->dest_count)) { | ^ arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user' 263 | __get_user((x), __p) : \ | ^ arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user' 233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \ | ^ arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error' 196 | __get_user_nocheck(x, ptr, __gu_failed); \ | ^ arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck' 185 | __get_user_8((x), __gu_ptr, label); \ | ^ arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8' 130 | u32 __user *__ptr = (u32 __user *)(ptr); \ | ^ fs/ioctl.c:723:8: warning: label followed by a declaration is a C23 extension [-Wc23-extensions] 723 | err = get_user(flags, argp); | ^ arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user' 263 | __get_user((x), __p) : \ | ^ arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user' 233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \ | ^ arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error' 196 | __get_user_nocheck(x, ptr, __gu_failed); \ | ^ arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck' 185 | __get_user_8((x), __gu_ptr, label); \ | ^ arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8' 130 | u32 __user *__ptr = (u32 __user *)(ptr); \ | ^ 6 warnings generated. -- In file included from fs/namespace.c:11: In file included from include/linux/syscalls.h:83: In file included from include/uapi/linux/aio_abi.h:31: >> include/linux/fs.h:3921:15: warning: label followed by a declaration is a C23 extension [-Wc23-extensions] 3921 | if (unlikely(get_user(c, path))) | ^ arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user' 263 | __get_user((x), __p) : \ | ^ arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user' 233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \ | ^ arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error' 196 | __get_user_nocheck(x, ptr, __gu_failed); \ | ^ arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck' 185 | __get_user_8((x), __gu_ptr, label); \ | ^ arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8' 130 | u32 __user *__ptr = (u32 __user *)(ptr); \ | ^ >> fs/namespace.c:4097:7: warning: label followed by a declaration is a C23 extension [-Wc23-extensions] 4097 | if (get_user(c, (const char __user *)data + offset)) | ^ arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user' 263 | __get_user((x), __p) : \ | ^ arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user' 233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \ | ^ arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error' 196 | __get_user_nocheck(x, ptr, __gu_failed); \ | ^ arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck' 185 | __get_user_8((x), __gu_ptr, label); \ | ^ arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8' 130 | u32 __user *__ptr = (u32 __user *)(ptr); \ | ^ fs/namespace.c:5942:8: warning: label followed by a declaration is a C23 extension [-Wc23-extensions] 5942 | ret = get_user(usize, &req->size); | ^ arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user' 263 | __get_user((x), __p) : \ | ^ arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user' 233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \ | ^ arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error' 196 | __get_user_nocheck(x, ptr, __gu_failed); \ | ^ arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck' 185 | __get_user_8((x), __gu_ptr, label); \ | ^ arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8' 130 | u32 __user *__ptr = (u32 __user *)(ptr); \ | ^ 3 warnings generated. -- In file included from fs/read_write.c:14: In file included from include/linux/fsnotify.h:15: In file included from include/linux/fsnotify_backend.h:14: >> include/linux/fs.h:3921:15: warning: label followed by a declaration is a C23 extension [-Wc23-extensions] 3921 | if (unlikely(get_user(c, path))) | ^ arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user' 263 | __get_user((x), __p) : \ | ^ arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user' 233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \ | ^ arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error' 196 | __get_user_nocheck(x, ptr, __gu_failed); \ | ^ arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck' 185 | __get_user_8((x), __gu_ptr, label); \ | ^ arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8' 130 | u32 __user *__ptr = (u32 __user *)(ptr); \ | ^ >> fs/read_write.c:1403:16: warning: label followed by a declaration is a C23 extension [-Wc23-extensions] 1403 | if (unlikely(get_user(off, offset))) | ^ arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user' 263 | __get_user((x), __p) : \ | ^ arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user' 233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \ | ^ arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error' 196 | __get_user_nocheck(x, ptr, __gu_failed); \ | ^ arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck' 185 | __get_user_8((x), __gu_ptr, label); \ | ^ arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8' 130 | u32 __user *__ptr = (u32 __user *)(ptr); \ | ^ 2 warnings generated. -- In file included from fs/select.c:18: In file included from include/linux/compat.h:17: >> include/linux/fs.h:3921:15: warning: label followed by a declaration is a C23 extension [-Wc23-extensions] 3921 | if (unlikely(get_user(c, path))) | ^ arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user' 263 | __get_user((x), __p) : \ | ^ arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user' 233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \ | ^ arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error' 196 | __get_user_nocheck(x, ptr, __gu_failed); \ | ^ arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck' 185 | __get_user_8((x), __gu_ptr, label); \ | ^ arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8' 130 | u32 __user *__ptr = (u32 __user *)(ptr); \ | ^ >> fs/select.c:783:3: warning: label followed by a declaration is a C23 extension [-Wc23-extensions] 783 | unsafe_get_user(to->p, &from->p, Efault); | ^ arch/riscv/include/asm/uaccess.h:449:2: note: expanded from macro 'unsafe_get_user' 449 | __get_user_nocheck(__gu_val, (ptr), label); \ | ^ arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck' 185 | __get_user_8((x), __gu_ptr, label); \ | ^ arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8' 130 | u32 __user *__ptr = (u32 __user *)(ptr); \ | ^ fs/select.c:784:3: warning: label followed by a declaration is a C23 extension [-Wc23-extensions] 784 | unsafe_get_user(to->size, &from->size, Efault); | ^ arch/riscv/include/asm/uaccess.h:449:2: note: expanded from macro 'unsafe_get_user' 449 | __get_user_nocheck(__gu_val, (ptr), label); \ | ^ arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck' 185 | __get_user_8((x), __gu_ptr, label); \ | ^ arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8' 130 | u32 __user *__ptr = (u32 __user *)(ptr); \ | ^ 3 warnings generated. -- In file included from fs/namei.c:22: >> include/linux/fs.h:3921:15: warning: label followed by a declaration is a C23 extension [-Wc23-extensions] 3921 | if (unlikely(get_user(c, path))) | ^ arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user' 263 | __get_user((x), __p) : \ | ^ arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user' 233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \ | ^ arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error' 196 | __get_user_nocheck(x, ptr, __gu_failed); \ | ^ arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck' 185 | __get_user_8((x), __gu_ptr, label); \ | ^ arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8' 130 | u32 __user *__ptr = (u32 __user *)(ptr); \ | ^ >> fs/namei.c:231:6: warning: label followed by a declaration is a C23 extension [-Wc23-extensions] 231 | if (get_user(c, pathname)) | ^ arch/riscv/include/asm/uaccess.h:263:3: note: expanded from macro 'get_user' 263 | __get_user((x), __p) : \ | ^ arch/riscv/include/asm/uaccess.h:233:2: note: expanded from macro '__get_user' 233 | __get_user_error(__gu_val, __gu_ptr, __gu_err); \ | ^ arch/riscv/include/asm/uaccess.h:196:2: note: expanded from macro '__get_user_error' 196 | __get_user_nocheck(x, ptr, __gu_failed); \ | ^ arch/riscv/include/asm/uaccess.h:185:3: note: expanded from macro '__get_user_nocheck' 185 | __get_user_8((x), __gu_ptr, label); \ | ^ arch/riscv/include/asm/uaccess.h:130:2: note: expanded from macro '__get_user_8' 130 | u32 __user *__ptr = (u32 __user *)(ptr); \ | ^ 2 warnings generated. .. vim +3921 include/linux/fs.h 90f8572b0f021fd Eric W. Biederman 2015-06-29 3903 45cd0faae3715e3 Amir Goldstein 2018-08-27 3904 /* mm/fadvise.c */ 45cd0faae3715e3 Amir Goldstein 2018-08-27 3905 extern int vfs_fadvise(struct file *file, loff_t offset, loff_t len, 45cd0faae3715e3 Amir Goldstein 2018-08-27 3906 int advice); cf1ea0592dbf109 Jan Kara 2019-08-29 3907 extern int generic_fadvise(struct file *file, loff_t offset, loff_t len, cf1ea0592dbf109 Jan Kara 2019-08-29 3908 int advice); 45cd0faae3715e3 Amir Goldstein 2018-08-27 3909 1bc6d4452d5c91b Christian Brauner 2024-04-30 3910 static inline bool vfs_empty_path(int dfd, const char __user *path) 1bc6d4452d5c91b Christian Brauner 2024-04-30 3911 { 1bc6d4452d5c91b Christian Brauner 2024-04-30 3912 char c; 1bc6d4452d5c91b Christian Brauner 2024-04-30 3913 1bc6d4452d5c91b Christian Brauner 2024-04-30 3914 if (dfd < 0) 1bc6d4452d5c91b Christian Brauner 2024-04-30 3915 return false; 1bc6d4452d5c91b Christian Brauner 2024-04-30 3916 1bc6d4452d5c91b Christian Brauner 2024-04-30 3917 /* We now allow NULL to be used for empty path. */ 1bc6d4452d5c91b Christian Brauner 2024-04-30 3918 if (!path) 1bc6d4452d5c91b Christian Brauner 2024-04-30 3919 return true; 1bc6d4452d5c91b Christian Brauner 2024-04-30 3920 1bc6d4452d5c91b Christian Brauner 2024-04-30 @3921 if (unlikely(get_user(c, path))) 1bc6d4452d5c91b Christian Brauner 2024-04-30 3922 return false; 1bc6d4452d5c91b Christian Brauner 2024-04-30 3923 1bc6d4452d5c91b Christian Brauner 2024-04-30 3924 return !c; 1bc6d4452d5c91b Christian Brauner 2024-04-30 3925 } 1bc6d4452d5c91b Christian Brauner 2024-04-30 3926 :::::: The code at line 3921 was first introduced by commit :::::: 1bc6d4452d5c91beb09e37a98a590808e1997b79 fs: new helper vfs_empty_path() :::::: TO: Christian Brauner :::::: CC: Christian Brauner -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki