From nobody Fri Nov 19 04:36:50 2021 X-Original-To: dev-commits-src-branches@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id C4D01188E395; Fri, 19 Nov 2021 04:36:51 +0000 (UTC) (envelope-from git@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 "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4HwP5H1fVdz3pvk; Fri, 19 Nov 2021 04:36:51 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (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 did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id C91332219D; Fri, 19 Nov 2021 04:36:50 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 1AJ4aofb034515; Fri, 19 Nov 2021 04:36:50 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 1AJ4aocR034514; Fri, 19 Nov 2021 04:36:50 GMT (envelope-from git) Date: Fri, 19 Nov 2021 04:36:50 GMT Message-Id: <202111190436.1AJ4aocR034514@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Konstantin Belousov Subject: git: 3a12ea648f3b - stable/13 - freevnode(): lock the freeing vnode around destroy_vpollinfo() List-Id: Commits to the stable branches of the FreeBSD src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-branches List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-branches@freebsd.org X-BeenThere: dev-commits-src-branches@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: kib X-Git-Repository: src X-Git-Refname: refs/heads/stable/13 X-Git-Reftype: branch X-Git-Commit: 3a12ea648f3b9a7de4fe08a3a9d3ea6d025e8f07 Auto-Submitted: auto-generated X-ThisMailContainsUnwantedMimeParts: N The branch stable/13 has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=3a12ea648f3b9a7de4fe08a3a9d3ea6d025e8f07 commit 3a12ea648f3b9a7de4fe08a3a9d3ea6d025e8f07 Author: Konstantin Belousov AuthorDate: 2021-11-02 02:49:13 +0000 Commit: Konstantin Belousov CommitDate: 2021-11-19 04:25:29 +0000 freevnode(): lock the freeing vnode around destroy_vpollinfo() (cherry picked from commit d1d675cb304c3cca824fbc9f932dc9d655b1ad24) --- sys/kern/vfs_subr.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c index da2f90a44d86..ce1f4ed6126e 100644 --- a/sys/kern/vfs_subr.c +++ b/sys/kern/vfs_subr.c @@ -1920,7 +1920,9 @@ freevnode(struct vnode *vp) mac_vnode_destroy(vp); #endif if (vp->v_pollinfo != NULL) { + vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); destroy_vpollinfo(vp->v_pollinfo); + VOP_UNLOCK(vp); vp->v_pollinfo = NULL; } vp->v_mountedhere = NULL;