From patchwork Wed Jun 7 16:16:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Antipov X-Patchwork-Id: 690500 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 56829C7EE2F for ; Wed, 7 Jun 2023 16:16:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239899AbjFGQQk (ORCPT ); Wed, 7 Jun 2023 12:16:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42470 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238577AbjFGQQh (ORCPT ); Wed, 7 Jun 2023 12:16:37 -0400 Received: from forward102b.mail.yandex.net (forward102b.mail.yandex.net [178.154.239.149]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E58EA199D for ; Wed, 7 Jun 2023 09:16:35 -0700 (PDT) Received: from mail-nwsmtp-smtp-production-main-63.sas.yp-c.yandex.net (mail-nwsmtp-smtp-production-main-63.sas.yp-c.yandex.net [IPv6:2a02:6b8:c14:6e01:0:640:627f:0]) by forward102b.mail.yandex.net (Yandex) with ESMTP id 500C860031; Wed, 7 Jun 2023 19:16:34 +0300 (MSK) Received: by mail-nwsmtp-smtp-production-main-63.sas.yp-c.yandex.net (smtp/Yandex) with ESMTPSA id KGX7fTADXSw0-pr1UYybQ; Wed, 07 Jun 2023 19:16:34 +0300 X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex.ru; s=mail; t=1686154594; bh=fnlyunCbB9cj/57wkDEeWYriIa21VhOlUzGg1mysQ7Y=; h=Message-Id:Date:In-Reply-To:Cc:Subject:References:To:From; b=h0M4h+cX0bidSyHBzqwLZMkqXKOrILm2veHWkN0/zMb6qCSKeXz/xDzgKwOmaLYZ/ c6APFv+c8H1EQMNp1/Hb9sFalXTfNjdtaLECjvrgy6Q0ftKr+mDc9rHUrh/5FxLkXo 19+ea8ihzRNshtyn2PE72twN8JIoDX0hGqR7A3J4= Authentication-Results: mail-nwsmtp-smtp-production-main-63.sas.yp-c.yandex.net; dkim=pass header.i=@yandex.ru From: Dmitry Antipov To: Franky Lin Cc: brcm80211-dev-list.pdl@broadcom.com, linux-wireless@vger.kernel.org, Kalle Valo , lvc-project@linuxtesting.org, Dmitry Antipov Subject: [PATCH 2/3] wifi: brcmfmac: handle possible completion timeouts Date: Wed, 7 Jun 2023 19:16:09 +0300 Message-Id: <20230607161611.85106-2-dmantipov@yandex.ru> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230607161611.85106-1-dmantipov@yandex.ru> References: <20230607161611.85106-1-dmantipov@yandex.ru> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Handle possible 'wait_for_completion_timeout()' errors in 'brcmf_p2p_af_searching_channel()', ' brcmf_p2p_tx_action_frame()' and 'brcmf_p2p_del_vif()', adjust related code. Found by Linux Verification Center (linuxtesting.org) with SVACE. Signed-off-by: Dmitry Antipov --- .../broadcom/brcm80211/brcmfmac/p2p.c | 30 ++++++++++++------- 1 file changed, 20 insertions(+), 10 deletions(-) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c index d4492d02e4ea..9e383e6cab21 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c @@ -1173,8 +1173,10 @@ static s32 brcmf_p2p_af_searching_channel(struct brcmf_p2p_info *p2p) retry); /* search peer on peer's listen channel */ schedule_work(&afx_hdl->afx_work); - wait_for_completion_timeout(&afx_hdl->act_frm_scan, - P2P_AF_FRM_SCAN_MAX_WAIT); + if (!wait_for_completion_timeout(&afx_hdl->act_frm_scan, + P2P_AF_FRM_SCAN_MAX_WAIT)) + /* timed out */ + afx_hdl->peer_chan = P2P_INVALID_CHANNEL; if ((afx_hdl->peer_chan != P2P_INVALID_CHANNEL) || (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status))) @@ -1186,8 +1188,10 @@ static s32 brcmf_p2p_af_searching_channel(struct brcmf_p2p_info *p2p) /* listen on my listen channel */ afx_hdl->is_listen = true; schedule_work(&afx_hdl->afx_work); - wait_for_completion_timeout(&afx_hdl->act_frm_scan, - P2P_AF_FRM_SCAN_MAX_WAIT); + if (!wait_for_completion_timeout + (&afx_hdl->act_frm_scan, P2P_AF_FRM_SCAN_MAX_WAIT)) + /* timed out */ + afx_hdl->peer_chan = P2P_INVALID_CHANNEL; } if ((afx_hdl->peer_chan != P2P_INVALID_CHANNEL) || (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, @@ -1580,14 +1584,20 @@ static s32 brcmf_p2p_tx_action_frame(struct brcmf_p2p_info *p2p, (p2p->wait_for_offchan_complete) ? "off-channel" : "on-channel"); - wait_for_completion_timeout(&p2p->send_af_done, P2P_AF_MAX_WAIT_TIME); - + if (!wait_for_completion_timeout(&p2p->send_af_done, + P2P_AF_MAX_WAIT_TIME)) { + err = -ETIMEDOUT; + goto clear; + } if (test_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status)) { - brcmf_dbg(TRACE, "TX action frame operation is success\n"); + err = 0; + brcmf_dbg(TRACE, "TX action frame operation has succeeded\n"); } else { err = -EIO; brcmf_dbg(TRACE, "TX action frame operation has failed\n"); } + +clear: /* clear status bit for action tx */ clear_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status); clear_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status); @@ -2404,10 +2414,10 @@ int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev) brcmf_dbg(INFO, "P2P: GO_NEG_PHASE status cleared\n"); if (wait_for_disable) - wait_for_completion_timeout(&cfg->vif_disabled, - BRCMF_P2P_DISABLE_TIMEOUT); + err = (wait_for_completion_timeout(&cfg->vif_disabled, + BRCMF_P2P_DISABLE_TIMEOUT) + ? 0 : -ETIMEDOUT); - err = 0; if (iftype != NL80211_IFTYPE_P2P_DEVICE) { brcmf_vif_clear_mgmt_ies(vif); err = brcmf_p2p_release_p2p_if(vif);