From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0a-0064b401.pphosted.com (mx0a-0064b401.pphosted.com [205.220.166.238]) (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 50052DF4D for ; Mon, 26 Feb 2024 02:37:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.166.238 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708915050; cv=none; b=Ag6V7exEwwW2BJdSvzZmXVWX4+1dckcioB/z0W964AtP4G7wlE51qnP89270J4TMoQDaoqx6/+qGNq1x12tsKPWgoVHuKNopNGdi09Q+nAKLUMBxHuz+f0+45fiinf4WMbtgfhHwz5ZyCM70yk0TNvjZHPSuHccJVLm4C5EybBs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708915050; c=relaxed/simple; bh=8ju9nGrnqXllCGUq/uiRZIGQQs1V4xbDgF3+PcJa57s=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=epw5qjgpXeCl0BuT9xy1/iJUESBAM0R66SZtxPmRCWD6apt3BQixJ4+z6n1wRL8kTtiUPPMr4KsggWU9+PearFIP6eXixH/R9yHc4a1pUdoNh0oljFGM3Rt3zwG8J4XrZvZLTDkZBFHQNOKaEq45WSIa7ukNZKU2RAHj6lFs4Zc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=windriver.com; spf=pass smtp.mailfrom=windriver.com; dkim=pass (2048-bit key) header.d=windriver.com header.i=@windriver.com header.b=ixulh+Bh; arc=none smtp.client-ip=205.220.166.238 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=windriver.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=windriver.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=windriver.com header.i=@windriver.com header.b="ixulh+Bh" Received: from pps.filterd (m0250809.ppops.net [127.0.0.1]) by mx0a-0064b401.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 41Q2L6ID032332; Sun, 25 Feb 2024 18:37:18 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=windriver.com; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding:content-type; s= PPS06212021; bh=m1S/jeDFhTPTdtWYr2qH1HJyolt7fFJSe0iiRSUr624=; b= ixulh+Bhrj2SnHHNoxfwyPzXzyk2hbxs0JDhEKRSvg6UvoUTshlvZ8I8yEOL+f1D A5IqQ4DGTQoIAZ0SXm3s8SksFWwDr5EHl8m6bDnEftGiQFbtBjXyIxXOfiE7NwnD KwGBXGyoRJhn+T3dFGWYcuY1lX5dS+OuwIoDa4bqtkNtaInEXc5BM9pBgV3TLaL1 cov5Zvoz8gcOHjxH/gul/PY0WGTuHiTpxVA8IyXLczJ2EVXKPtUiVGnbeDp1NO6C AWTVOtNZRxNYSuTgqphvZjUPisQUkKVHP/UUMcux1HrAo+zzNt0LD+jDCxv6ygAo +XopG6S+kAjER/pfUJvHVg== Received: from ala-exchng01.corp.ad.wrs.com (ala-exchng01.wrs.com [147.11.82.252]) by mx0a-0064b401.pphosted.com (PPS) with ESMTPS id 3wfgumh2um-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Sun, 25 Feb 2024 18:37:18 -0800 (PST) Received: from ALA-EXCHNG02.corp.ad.wrs.com (147.11.82.254) by ala-exchng01.corp.ad.wrs.com (147.11.82.252) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Sun, 25 Feb 2024 18:37:17 -0800 Received: from pek-lpd-ccm6.wrs.com (147.11.136.210) by ALA-EXCHNG02.corp.ad.wrs.com (147.11.82.254) with Microsoft SMTP Server id 15.1.2507.35 via Frontend Transport; Sun, 25 Feb 2024 18:37:16 -0800 From: Lizhi Xu To: CC: , Subject: Re: [syzbot] [dri?] WARNING in vkms_get_vblank_timestamp (2) Date: Mon, 26 Feb 2024 10:37:15 +0800 Message-ID: <20240226023715.2653372-1-lizhi.xu@windriver.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <000000000000edf6a306105afb50@google.com> References: <000000000000edf6a306105afb50@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Proofpoint-ORIG-GUID: UC24_vY1kVfJziGg6v_0CoL4BSBsTSav X-Proofpoint-GUID: UC24_vY1kVfJziGg6v_0CoL4BSBsTSav X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-26_01,2024-02-23_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1011 phishscore=0 priorityscore=1501 suspectscore=0 impostorscore=0 mlxscore=0 spamscore=0 adultscore=0 malwarescore=0 bulkscore=0 mlxlogscore=856 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2402120000 definitions=main-2402260018 #syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git v6.8 diff --git a/drivers/gpu/drm/vkms/vkms_crtc.c b/drivers/gpu/drm/vkms/vkms_crtc.c index 61e500b8c9da..ae31e000dce2 100644 --- a/drivers/gpu/drm/vkms/vkms_crtc.c +++ b/drivers/gpu/drm/vkms/vkms_crtc.c @@ -100,7 +100,7 @@ static bool vkms_get_vblank_timestamp(struct drm_crtc *crtc, *vblank_time = READ_ONCE(output->vblank_hrtimer.node.expires); - if (WARN_ON(*vblank_time == vblank->time)) + if (WARN_ON(in_vblank_irq && *vblank_time == vblank->time)) return true; /*