From owner-svn-src-all@freebsd.org Wed Nov 21 22:25:06 2018 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 864361148922; Wed, 21 Nov 2018 22:25:06 +0000 (UTC) (envelope-from mjg@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 234567A70A; Wed, 21 Nov 2018 22:25:06 +0000 (UTC) (envelope-from mjg@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 043102694B; Wed, 21 Nov 2018 22:25:06 +0000 (UTC) (envelope-from mjg@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id wALMP52a018192; Wed, 21 Nov 2018 22:25:05 GMT (envelope-from mjg@FreeBSD.org) Received: (from mjg@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id wALMP5uh018191; Wed, 21 Nov 2018 22:25:05 GMT (envelope-from mjg@FreeBSD.org) Message-Id: <201811212225.wALMP5uh018191@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: mjg set sender to mjg@FreeBSD.org using -f From: Mateusz Guzik Date: Wed, 21 Nov 2018 22:25:05 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r340749 - head/sys/kern X-SVN-Group: head X-SVN-Commit-Author: mjg X-SVN-Commit-Paths: head/sys/kern X-SVN-Commit-Revision: 340749 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 234567A70A X-Spamd-Result: default: False [1.34 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_SPAM_LONG(0.40)[0.400,0]; NEURAL_SPAM_MEDIUM(0.49)[0.489,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US]; NEURAL_SPAM_SHORT(0.45)[0.446,0] X-Rspamd-Server: mx1.freebsd.org X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 21 Nov 2018 22:25:06 -0000 Author: mjg Date: Wed Nov 21 22:25:05 2018 New Revision: 340749 URL: https://svnweb.freebsd.org/changeset/base/340749 Log: uipc_usrreq: fix inode number assignment The code was incrementing a global variable in an unsafe manner. Two different threads stating two different sockets could have resulted in the same inode numbers assigned to both. Creation is protected with a global lock, move the assigment there. Since inode numbers are 64-bit now drop the check for overflows. Sponsored by: The FreeBSD Foundation Modified: head/sys/kern/uipc_usrreq.c Modified: head/sys/kern/uipc_usrreq.c ============================================================================== --- head/sys/kern/uipc_usrreq.c Wed Nov 21 22:16:10 2018 (r340748) +++ head/sys/kern/uipc_usrreq.c Wed Nov 21 22:25:05 2018 (r340749) @@ -530,6 +530,7 @@ uipc_attach(struct socket *so, int proto, struct threa UNP_LINK_WLOCK(); unp->unp_gencnt = ++unp_gencnt; + unp->unp_ino = ++unp_ino; unp_count++; switch (so->so_type) { case SOCK_STREAM: @@ -1302,12 +1303,8 @@ uipc_sense(struct socket *so, struct stat *sb) KASSERT(unp != NULL, ("uipc_sense: unp == NULL")); sb->st_blksize = so->so_snd.sb_hiwat; - UNP_PCB_LOCK(unp); sb->st_dev = NODEV; - if (unp->unp_ino == 0) - unp->unp_ino = (++unp_ino == 0) ? ++unp_ino : unp_ino; sb->st_ino = unp->unp_ino; - UNP_PCB_UNLOCK(unp); return (0); }