From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (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 22C5E19E7D1 for ; Fri, 17 Jan 2025 21:29:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737149400; cv=none; b=QwX9XDadhqKD6xZnYEVdRvTExygTO2Am8tFq7/myKVud0078DbZnXsobT5aGfteN0vAcj4bg7cY4F401uiKBdRsQe5YZQPeSQQm6FpRhYMzx55bCllY8yr+PshwyaD2k3p+vrGliDvST+H+HEEq8Kw/i+RzJTss0QyBKqi2aDvU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737149400; c=relaxed/simple; bh=O9fBo5JI4CXzTDxOTycsR9bVLVyGTuOYwP7a6sID3Ro=; h=From:In-Reply-To:References:To:Cc:Subject:MIME-Version: Content-Type:Date:Message-ID; b=s9RVSv71tCAf0Si5K5fs5uJJqHJyJdNG+zgUM+4ik0MAXQHwqC9tsc6R7MRFOdcLMvw5JFYPBsfdyt26JJuy3rG/Mjw8Z/ZDa4rNLFpaEm5CMfqVjMGJk8x7p8GCAEvCuNaQFB4NnU+EcQ4DtM+bo2AOLadR3nCsxmocxuPCmYw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=Sl5lkSk9; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Sl5lkSk9" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1737149398; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=O9fBo5JI4CXzTDxOTycsR9bVLVyGTuOYwP7a6sID3Ro=; b=Sl5lkSk9TZ6bN11RaGHkTVUmoZXnSdfR7CzqQG+6F3qYxk64detv40hi2Skwmx4NuFJ0ZH l0xJIA5Qrt6PAWAzsH4bhanKYRT5HyQ8glvQICA+pp4rx3b/bEmD5i3PpD9qBOz335/E9m g5i05iJqra9p1GihTi25KMe0tX0tJpY= Received: from mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-55-xfl1hUDPPJSbcFFOQT9V5Q-1; Fri, 17 Jan 2025 16:29:56 -0500 X-MC-Unique: xfl1hUDPPJSbcFFOQT9V5Q-1 X-Mimecast-MFC-AGG-ID: xfl1hUDPPJSbcFFOQT9V5Q Received: from mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.17]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 5635819560B2; Fri, 17 Jan 2025 21:29:55 +0000 (UTC) Received: from warthog.procyon.org.uk (unknown [10.42.28.5]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 4519E1955F10; Fri, 17 Jan 2025 21:29:53 +0000 (UTC) Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: References: <266c50167604c606c95a6efe575de5430c31168b.camel@ibm.com> To: Ilya Dryomov , Viacheslav Dubeyko Cc: dhowells@redhat.com, "ceph-devel@vger.kernel.org" , Alex Markuze , "linux-fsdevel@vger.kernel.org" , "slava@dubeyko.com" Subject: Re: [RFC PATCH] ceph: Fix kernel crash in generic/397 test Precedence: bulk X-Mailing-List: ceph-devel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <887370.1737149392.1@warthog.procyon.org.uk> Date: Fri, 17 Jan 2025 21:29:52 +0000 Message-ID: <887371.1737149392@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 Note that netfslib provides some tracepoints that you can use to try and illuminate what's going on there. echo 1 > /sys/kernel/debug/tracing/events/netfs/netfs_read/enable echo 1 > /sys/kernel/debug/tracing/events/netfs/netfs_rreq/enable echo 1 > /sys/kernel/debug/tracing/events/netfs/netfs_sreq/enable echo 1 > /sys/kernel/debug/tracing/events/netfs/netfs_failure/enable for starters. David