From nobody Fri Oct 29 23:58:22 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 A3950181D3B9; Fri, 29 Oct 2021 23:58:26 +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 4HgzsF0hwfz4VQ0; Fri, 29 Oct 2021 23:58:24 +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 68C181FF7C; Fri, 29 Oct 2021 23:58:22 +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 19TNwMea003678; Fri, 29 Oct 2021 23:58:22 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 19TNwMdN003677; Fri, 29 Oct 2021 23:58:22 GMT (envelope-from git) Date: Fri, 29 Oct 2021 23:58:22 GMT Message-Id: <202110292358.19TNwMdN003677@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: John Baldwin Subject: git: f0334cb8d345 - stable/13 - cxgbei: Better handle new tasks and transfers when disconnecting. 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: jhb X-Git-Repository: src X-Git-Refname: refs/heads/stable/13 X-Git-Reftype: branch X-Git-Commit: f0334cb8d345da6039d76ed6be9790aba0e94b34 Auto-Submitted: auto-generated X-ThisMailContainsUnwantedMimeParts: N The branch stable/13 has been updated by jhb: URL: https://cgit.FreeBSD.org/src/commit/?id=f0334cb8d345da6039d76ed6be9790aba0e94b34 commit f0334cb8d345da6039d76ed6be9790aba0e94b34 Author: John Baldwin AuthorDate: 2021-06-18 23:15:50 +0000 Commit: John Baldwin CommitDate: 2021-10-29 23:10:14 +0000 cxgbei: Better handle new tasks and transfers when disconnecting. If the connection is in the process of disconnecting, ic_socket can be NULL. For icl_cxgbei_conn_transfer_setup(), lock the connection and check ic_socket before using it. For icl_cxgbei_conn_task_setup(), the caller already holds the connection lock, so assert it and bail early with ECONNRESET if the connection is disconnecting. Reported by: Jithesh Arakkan @ Chelsio Fixes: f949967c8eb3 cxgbei: Fix a race between transfer setup and a peer reset. (cherry picked from commit abc273a2901b116cc98a1fb506c75ac1b0a14cd3) --- sys/dev/cxgbe/cxgbei/icl_cxgbei.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/sys/dev/cxgbe/cxgbei/icl_cxgbei.c b/sys/dev/cxgbe/cxgbei/icl_cxgbei.c index 01759d929c0e..e974ad73a935 100644 --- a/sys/dev/cxgbe/cxgbei/icl_cxgbei.c +++ b/sys/dev/cxgbe/cxgbei/icl_cxgbei.c @@ -988,10 +988,15 @@ icl_cxgbei_conn_task_setup(struct icl_conn *ic, struct icl_pdu *ip, uint32_t itt; int rc = 0; + ICL_CONN_LOCK_ASSERT(ic); + /* This is for the offload driver's state. Must not be set already. */ MPASS(arg != NULL); MPASS(*arg == NULL); + if (ic->ic_disconnecting || ic->ic_socket == NULL) + return (ECONNRESET); + if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_IN || csio->dxfer_len < ci->ddp_threshold) { no_ddp: @@ -1209,8 +1214,17 @@ no_ddp: * Do not get inp from toep->inp as the toepcb might * have detached already. */ + ICL_CONN_LOCK(ic); + if (ic->ic_disconnecting || ic->ic_socket == NULL) { + ICL_CONN_UNLOCK(ic); + mbufq_drain(&mq); + t4_free_page_pods(prsv); + free(ddp, M_CXGBEI); + return (ECONNRESET); + } inp = sotoinpcb(ic->ic_socket); INP_WLOCK(inp); + ICL_CONN_UNLOCK(ic); if ((inp->inp_flags & (INP_DROPPED | INP_TIMEWAIT)) != 0) { INP_WUNLOCK(inp); mbufq_drain(&mq);