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 3CFBC213E6A for ; Fri, 6 Dec 2024 21:13:37 +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=1733519619; cv=none; b=l77xRlrffxUiNUTMArh0avt+Y8hlJkBQWs2INYHJdBpz/tPcPjAtjTWrNLx4fvHrEZsEg9Qz4/2RGFcF4sotOFJvcc5Ja/KRZrgCgQ9Q8M+INaF9+fC+RKLTyxGp7MEufqnvEOZj7l7suovaC4M6d7YC0WiHzFVYW6HjQtkgOy8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733519619; c=relaxed/simple; bh=UmyiWS3FvApH/OGcGuiDKK7Yco/2XZG4nu/5S0zwsIw=; h=From:In-Reply-To:References:To:Cc:Subject:MIME-Version: Content-Type:Date:Message-ID; b=lo0P7SlynhuTxRIvYfHhYD2IFjL6XCuY23NCcvARilCs05ZcWEsLZ1oxvYNU24AWy6d2fiwvp3ZrXhGih8ID+DKugiCnnVShKA0UEwMYgxOJCPWdseh3dudSdy/TSWTyCxzTA4KfeksEN+2ASBnjlTT7Bq7jnjNV2t3IrcJZVJs= 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=RPoC01pq; 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="RPoC01pq" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1733519617; 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=cSUJegE2rtjeYKwXEyaKur6j8cDYr8o25vQqsWAVYBA=; b=RPoC01pqlDypxNHJ0qToD8fWrWapd9wSfUuH13+CB51yr4SgyPfl/sWejH2jy7zsa5S7gR rwJ6KcPAblgmimZt+SC5FVEaM3rE0ORQUXVxC4EwnQNbTMZRPhuhw7yp215PSHAwdkGEar DvUujtmJZ7WlFqiju9zPlTTJhbyuQ3M= Received: from mx-prod-mc-02.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-591-KSFQMdm-PCuJQiNgdilzKg-1; Fri, 06 Dec 2024 16:13:34 -0500 X-MC-Unique: KSFQMdm-PCuJQiNgdilzKg-1 X-Mimecast-MFC-AGG-ID: KSFQMdm-PCuJQiNgdilzKg Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (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-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 152541956089; Fri, 6 Dec 2024 21:13:33 +0000 (UTC) Received: from warthog.procyon.org.uk (unknown [10.42.28.48]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 301F63000238; Fri, 6 Dec 2024 21:13:30 +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: <3990750.1732884087@warthog.procyon.org.uk> To: Max Kellermann Cc: dhowells@redhat.com, Jeff Layton , netfs@lists.linux.dev, linux-fsdevel , linux-kernel@vger.kernel.org Subject: Re: 6.12 WARNING in netfs_consume_read_data() Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <1995559.1733519609.1@warthog.procyon.org.uk> Date: Fri, 06 Dec 2024 21:13:29 +0000 Message-ID: <1995560.1733519609@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Max Kellermann wrote: > > I tried with 6.12.3 + dhowells/netfs-writeback; David's branch solved > many problems and it took much longer to trigger the hang, but it > eventually occurred: Can you get some tracing for me? echo 1 >/sys/kernel/debug/tracing/events/netfs/netfs_failure/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_folio/enable echo 1 >/sys/kernel/debug/tracing/events/cachefiles/cachefiles_read/enable echo 1 >/sys/kernel/debug/tracing/events/cachefiles/cachefiles_write/enable (And compress the result before posting) Thanks, David