From patchwork Thu Sep 26 13:14:37 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fedor Pchelkin X-Patchwork-Id: 831014 Received: from mail.ispras.ru (mail.ispras.ru [83.149.199.84]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1E2144D8C8; Thu, 26 Sep 2024 13:15:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=83.149.199.84 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727356545; cv=none; b=tGdtZUEeu87WFvfZkyffAlTh63sro3qeLbqBs7gtKpj638qw6cwc6i3ibK/pcZX2dLIHyfs+y02vG8pr9+IKwu2mM9uC8eDSP+94VZCwjY7CRcBFzcrRXnIM01z8riF03EtuNDtvKJyamL1cKmf+e7cmOcBIzMeUp8Xgs3h3C0o= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727356545; c=relaxed/simple; bh=Li+NL/XbowcT+3OQ1OlrXptD+jGxB2P+QLxIIe9FIvk=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=B767iHcvQ6URAJ81SOoYzX3y/PL2qcivbyTV9ikrMsX9hfRIXn53V08zd0DBhAosKQNX0h9YT/+I4JBoM9X/HUQDf3XPwTTmWW5o5ySWJAdyaNO/H5gBKHFdtdxlxLGrp1eFbUutgtuvljUw2LKnnEflXGaqr93vrModrlt8Na4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ispras.ru; spf=pass smtp.mailfrom=ispras.ru; dkim=pass (1024-bit key) header.d=ispras.ru header.i=@ispras.ru header.b=rVDKN7PB; arc=none smtp.client-ip=83.149.199.84 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ispras.ru Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ispras.ru Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ispras.ru header.i=@ispras.ru header.b="rVDKN7PB" Received: from fpc.intra.ispras.ru (unknown [10.10.165.10]) by mail.ispras.ru (Postfix) with ESMTPSA id 1A22840769D4; Thu, 26 Sep 2024 13:15:41 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 mail.ispras.ru 1A22840769D4 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ispras.ru; s=default; t=1727356541; bh=V+1BZuk4NADDOeMBUufinelDNbmT7wM3ps2z/rjNJpg=; h=From:To:Cc:Subject:Date:From; b=rVDKN7PBCgiGyh+UHOSHd79VqylkxFbk6bMGovFBy+NyutDD6FwWwHWsWXv0n7v/R wgpwIWZ0Ae4ZjMjGYyaUMSce7dzgXOB6Fz74lxrSPdRbuAbdvQr3MCxBvgFWgL2/Mk fi5xMb43n9l71gtypxNkFKXVozMDOSU/xnoPa2hY= From: Fedor Pchelkin To: stable@vger.kernel.org Cc: Fedor Pchelkin , Ping-Ke Shih , Johannes Berg , Greg Kroah-Hartman , Sasha Levin , linux-wireless@vger.kernel.org Subject: [PATCH 6.1] Revert "wifi: cfg80211: check wiphy mutex is held for wdev mutex" Date: Thu, 26 Sep 2024 16:14:37 +0300 Message-Id: <20240926131437.34326-1-pchelkin@ispras.ru> X-Mailer: git-send-email 2.39.5 Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 This reverts commit 19d13ec00a8b1d60c5cc06bd0006b91d5bd8d46f. The reverted commit is based on implementation of wiphy locking that isn't planned to redo on a stable kernel, so revert it to avoid warnings in different parts of wireless stack where wdev_lock() is held, like: WARNING: CPU: 0 PID: 4727 at net/wireless/core.h:231 cfg80211_is_all_idle net/wireless/sme.c:692 [inline] WARNING: CPU: 0 PID: 4727 at net/wireless/core.h:231 disconnect_work+0x246/0x340 net/wireless/sme.c:706 Modules linked in: CPU: 0 PID: 4727 Comm: kworker/0:8 Not tainted 6.1.111-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events disconnect_work RIP: 0010:wdev_lock net/wireless/core.h:231 [inline] Call Trace: process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Signed-off-by: Fedor Pchelkin --- net/wireless/core.h | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) diff --git a/net/wireless/core.h b/net/wireless/core.h index 8118b8614ac6..ee980965a7cf 100644 --- a/net/wireless/core.h +++ b/net/wireless/core.h @@ -228,7 +228,6 @@ void cfg80211_register_wdev(struct cfg80211_registered_device *rdev, static inline void wdev_lock(struct wireless_dev *wdev) __acquires(wdev) { - lockdep_assert_held(&wdev->wiphy->mtx); mutex_lock(&wdev->mtx); __acquire(wdev->mtx); } @@ -236,16 +235,11 @@ static inline void wdev_lock(struct wireless_dev *wdev) static inline void wdev_unlock(struct wireless_dev *wdev) __releases(wdev) { - lockdep_assert_held(&wdev->wiphy->mtx); __release(wdev->mtx); mutex_unlock(&wdev->mtx); } -static inline void ASSERT_WDEV_LOCK(struct wireless_dev *wdev) -{ - lockdep_assert_held(&wdev->wiphy->mtx); - lockdep_assert_held(&wdev->mtx); -} +#define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx) static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev) {