From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp134-31.sina.com.cn (smtp134-31.sina.com.cn [180.149.134.31]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A726119EED5 for ; Thu, 20 Jun 2024 10:39:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=180.149.134.31 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718879955; cv=none; b=KoGZ4vfknkj2VGizDMDbw2Tpa+C1wk/fG2ZAtV1aMErYZAqBqnBZoXRQhq/tU3zdJznGj2/e5NZQV51USlYLZuN/DKFuqqSPNVAzlisIP2mM+zs0CMqmd25wA6SZPBQSMsB3lF5/+qwced4Omt+lk94Qgqr1xOQBsb1wMGd4GlI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718879955; c=relaxed/simple; bh=cP1vXZPPRqr0Uz61ZzQZpG8sk0PrcO4TOyTTsBrcVtM=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=eEVVhUJRBiaCzOFKq9uu4Ag0I48CMHSuv1AAy03iXTnGQWQ/+sBdDehGZD7bCJpCANlFEztTjx+2X6CUMraOXcMBFhlGFFhCUiT8fvlMZgmkIKrPa/lMdat/fAUd43jRJk1g3jFwg9t5BqEJRm+8AXJdJ5j6Mjhi0RE6Sb4LMf0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sina.com; spf=pass smtp.mailfrom=sina.com; arc=none smtp.client-ip=180.149.134.31 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sina.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sina.com X-SMAIL-HELO: localhost.localdomain Received: from unknown (HELO localhost.localdomain)([113.90.46.255]) by sina.com (10.185.250.21) with ESMTP id 667406BE00007ABF; Thu, 20 Jun 2024 18:38:57 +0800 (CST) X-Sender: hdanton@sina.com X-Auth-ID: hdanton@sina.com Authentication-Results: sina.com; spf=none smtp.mailfrom=hdanton@sina.com; dkim=none header.i=none; dmarc=none action=none header.from=hdanton@sina.com X-SMAIL-MID: 4741273408515 X-SMAIL-UIID: 77F886C4FC4640BF932F5FAFC4B80EF9-20240620-183857-1 From: Hillf Danton To: syzbot Cc: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, Tetsuo Handa , Boqun Feng , Linus Torvalds , linux-usb@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [usb?] INFO: task hung in wdm_release Date: Thu, 20 Jun 2024 18:38:47 +0800 Message-Id: <20240620103847.1724-1-hdanton@sina.com> In-Reply-To: <0000000000000ff9cb061b4ea872@google.com> References: Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Thu, 20 Jun 2024 02:08:21 -0700 > Showing all locks held in the system: > 3 locks held by kworker/u8:0/11: > #0: ffff8880b953e7d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559 > #1: ffff8880b9528948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988 > #2: ffff8880754f0768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:5966 [inline] > #2: ffff8880754f0768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: cfg80211_wiphy_work+0x35/0x260 net/wireless/core.c:424 The info looks bogus given acquiring mutex with runqueue lock held. static inline void wiphy_lock(struct wiphy *wiphy) __acquires(&wiphy->mtx) { mutex_lock(&wiphy->mtx); __acquire(&wiphy->mtx); }