From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out203-205-221-173.mail.qq.com (out203-205-221-173.mail.qq.com [203.205.221.173]) (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 89DA81553A7 for ; Tue, 22 Oct 2024 08:14:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=203.205.221.173 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729584853; cv=none; b=n9CcWyWeIxOVqKycc0FWE0hhXDlQT9+YJ4Ne6xpGeqYMpqxVV6slKxC8jrchW8Z/biFvsk0w7MPA/fPcYOwz1PUbokB4djWt0No+0OarVo8QQy8pcbYkRfRiFuMRkHlT9lE3xDLk6z6D71hRjAq9adysGHOoD4ZiHOzvv5kMCg8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729584853; c=relaxed/simple; bh=HcOyRxiccbtiOTOxsRRcjiKnOmEj+hIV5VUXrNlwyq8=; h=Message-ID:From:To:Cc:Subject:Date:In-Reply-To:References: MIME-Version; b=gJ8k09Z4smdGhj7saOAJ2vod5HqMqBGQftuqpcWUHdJ+pLKfv3DMxvpVMTPVyehRCn6/8gVIpnBsHWAJqJ4sE62a2+Om+lSt07W9YR5q6rg0hrphFUXFcVCxiAhGStUJVfMfg5vGs9kbWAikYaIqYc5HdFP2fKze3d1nRO69EHo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com; spf=pass smtp.mailfrom=qq.com; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b=OuJQkFqB; arc=none smtp.client-ip=203.205.221.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=qq.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b="OuJQkFqB" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qq.com; s=s201512; t=1729584844; bh=dcRFdkon/8P9gUWmmyQ3nX4Tvnh5+QEaMXWPK0pEoyI=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=OuJQkFqBnXJJHRwxFkp7gfyNy70rg3SKPDf5aphYok5xFvl/jIXFnae6NGfszoWCq 3WvnvgdmuW2mpODtmwcwkA52TqalSmYPqW5sLefkyBF5/uPqPOCFbv5W2+K0uZw9n+ c1UR8M9v0ncCB3l2bmJWhRDNAiTGXArgn3M3sUKQ= Received: from pek-lxu-l1.wrs.com ([111.198.227.254]) by newxmesmtplogicsvrszgpuc1-0.qq.com (NewEsmtp) with SMTP id 381A4814; Tue, 22 Oct 2024 16:14:01 +0800 X-QQ-mid: xmsmtpt1729584841tdhzg4lmu Message-ID: X-QQ-XMAILINFO: NO7nxmS7l766mSDBjsYz0GCzZahEoGRQ6x7+Q63dDSo0E2eCTk7Ba739UKqFLm PpK1tmswnsp+noGeeQEppfk47K6dhgGbphbzXZPZg0L29TPyMczaqUyTeX32nzHi79bc9f/LDiit W9GP5TJh2e8wpb50UgovkwWsMqDnJIfWAenthgONwaqlbaOZ4m7MkQCpik9EVCoT4DAwsU3xdm0f sXqAB7Tk5+qvk6o2cIHYvG7QcZ5XiA90xg8CDwyzUfT4Q4x5v6M9iTqlv2pIwX24mKThB86vQw7H xifKYqVE9Zh/5y5vY2/GGrCFLEAC4eo+rEzk2aaCX3mwDUq59I5YoYx4DqhEPGNwucdl7n2N+q4Q 6bz9GvnALtBm8tUtmvQDGB8hOAbUCnrRyrr+oZOkMeC5zVod2iWQd50SMtPIeLq8c2ZJ49B96AlT N5C0VZcODwB1J5KeDSKrw9+xKt9ChS/M8+68duTq6Z2MBoCOXx7n42X5Mz5SYGcyAIE5FftQRv/s Kx/LAFFhSAn19jAc/By5sBD8YLbfCboMI0DZZbMFjfpve43y/LcO7pPJgHn1EtV0TRMZBANoNWk9 /wOEZDHwckaMz5ofnjTfOJ+P+cpcqdEp/ZbvSuvN3O1CMff7+j4VgZX1w7n9oXKQis6T3PcNumfu 8iFt8mh8KLMq0bbdYEk86kxKFMIHAUrFBWwk6Ck1b/hfC0OPeXdBtzWsKfswSc5KEwsD5vfNF/CY Peot45WPNzPFIXon+g/Yl+gD9irpH5xWVvu6cS4dsZS2G0/MZMhx2gsd+B6IwCUbFRrLorZ0MkzP SCujYN7V6eZ2htyUiv7u7qaEm+ss0Jl9gEs1/eaXz9K1K2L72A5r5KSPTpV69Ww8ZMTBHp7M5yTe b2CeHmGocL7vTe1msvmifsghJApmswIUs5eokv0L8/e7Qe/uFDDcUAHi0BDouvBGtbpEweHsi4 X-QQ-XMRINFO: NS+P29fieYNw95Bth2bWPxk= From: Edward Adam Davis To: syzbot+a234c2d63e0c171ca10e@syzkaller.appspotmail.com Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [serial?] BUG: soft lockup in debug_check_no_obj_freed Date: Tue, 22 Oct 2024 16:14:02 +0800 X-OQ-MSGID: <20241022081401.3485277-2-eadavis@qq.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <6713d23a.050a0220.1e4b4d.0029.GAE@google.com> References: <6713d23a.050a0220.1e4b4d.0029.GAE@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 maybe we can insert cond_resched() #syz test diff --git a/lib/debugobjects.c b/lib/debugobjects.c index 5ce473ad499b..82cbd7a68994 100644 --- a/lib/debugobjects.c +++ b/lib/debugobjects.c @@ -975,6 +975,7 @@ static void __debug_check_no_obj_freed(const void *address, unsigned long size) repeat: cnt = 0; + cond_resched(); raw_spin_lock_irqsave(&db->lock, flags); hlist_for_each_entry_safe(obj, tmp, &db->list, node) { cnt++;