From owner-svn-src-head@freebsd.org Tue Jul 14 21:57:02 2020 Return-Path: Delivered-To: svn-src-head@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 8CB9D350BB2; Tue, 14 Jul 2020 21:57:02 +0000 (UTC) (envelope-from wulf@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4B5vW141hVz3ckS; Tue, 14 Jul 2020 21:57:01 +0000 (UTC) (envelope-from wulf@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 82EB5CD30; Tue, 14 Jul 2020 21:57:00 +0000 (UTC) (envelope-from wulf@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 06ELv0LG046830; Tue, 14 Jul 2020 21:57:00 GMT (envelope-from wulf@FreeBSD.org) Received: (from wulf@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 06ELv0QT046829; Tue, 14 Jul 2020 21:57:00 GMT (envelope-from wulf@FreeBSD.org) Message-Id: <202007142157.06ELv0QT046829@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: wulf set sender to wulf@FreeBSD.org using -f From: Vladimir Kondratyev Date: Tue, 14 Jul 2020 21:57:00 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r363205 - head/sys/compat/linuxkpi/common/include/linux X-SVN-Group: head X-SVN-Commit-Author: wulf X-SVN-Commit-Paths: head/sys/compat/linuxkpi/common/include/linux X-SVN-Commit-Revision: 363205 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 14 Jul 2020 21:57:02 -0000 Author: wulf Date: Tue Jul 14 21:56:59 2020 New Revision: 363205 URL: https://svnweb.freebsd.org/changeset/base/363205 Log: linuxkpi: Ignore NULL pointers passed to string parameter of kstr(n)dup That follows Linux and fixes related drm-kmod-5.3 panic. Reviewed by: imp, hselasky MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D25657 Modified: head/sys/compat/linuxkpi/common/include/linux/string.h Modified: head/sys/compat/linuxkpi/common/include/linux/string.h ============================================================================== --- head/sys/compat/linuxkpi/common/include/linux/string.h Tue Jul 14 21:43:57 2020 (r363204) +++ head/sys/compat/linuxkpi/common/include/linux/string.h Tue Jul 14 21:56:59 2020 (r363205) @@ -103,6 +103,8 @@ kstrdup(const char *string, gfp_t gfp) char *retval; size_t len; + if (string == NULL) + return (NULL); len = strlen(string) + 1; retval = kmalloc(len, gfp); if (retval != NULL) @@ -115,6 +117,8 @@ kstrndup(const char *string, size_t len, gfp_t gfp) { char *retval; + if (string == NULL) + return (NULL); retval = kmalloc(len + 1, gfp); if (retval != NULL) strncpy(retval, string, len);