From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (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 165FC1DF997 for ; Wed, 4 Dec 2024 13:41:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733319711; cv=none; b=I9GKN7kkVVH+jXfn3efUKYVeBcHLxLgA8CVj3lMJU9PZIbzboNj6fbKwuGWm3O97UXV9mr4fFM85Cf+6aBOh8cL4c/VmgPIt2NGO0aibhfTgiR/hkRk8Cf1OpxHqdfpRhBvPM8Pvpq77F5WSz6JCG1pG7agJfnx3pzq34K0x7ko= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733319711; c=relaxed/simple; bh=//IOCXU9YYt4/q/x0hx4GJcgqWywOZM6O/P4V+hgsa8=; h=From:In-Reply-To:References:To:Cc:Subject:MIME-Version: Content-Type:Date:Message-ID; b=YL9ui7jY36OFTHo4J2rAhlSzfzemSOXiXLw9EHRNYwvQiDuTjG0p1V7vFFNL/sQ5JJs1ILs2nsh84ZWV8XA8AQ19qqgeZ40V130YzkHHEf2GTve20/de4ojnSeUvPJA95/FIs5X/ru1WM00nRGbHueGRBwUOusWjr//DW5f4vFw= 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=OyNjLskW; arc=none smtp.client-ip=170.10.133.124 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="OyNjLskW" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1733319708; 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=Je4LoQU1rSuWE8wImIWJKAiOgPVmQRuJjQd+HMY9Y0c=; b=OyNjLskWkUeOfx/x36fAOSppazxp5dN7/4dKvs/ujrT2dgGmK7aQbPAXBRpsD1Z6dEUm/i RT2VBetCF027Vp2nIW36ro8u9QvRGA1xPZ/XzAT9FHQWVF21ULoXExz5WVRyQSgDzea3Ch FuQiI1wBglveKkcGNBLsZ+wYhxXt6yQ= Received: from mx-prod-mc-04.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-12-SJNa59pBOM-nAAPG5E9uHA-1; Wed, 04 Dec 2024 08:41:44 -0500 X-MC-Unique: SJNa59pBOM-nAAPG5E9uHA-1 X-Mimecast-MFC-AGG-ID: SJNa59pBOM-nAAPG5E9uHA Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (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-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 785F11954B09; Wed, 4 Dec 2024 13:41:42 +0000 (UTC) Received: from warthog.procyon.org.uk (unknown [10.42.28.48]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 358B119560A2; Wed, 4 Dec 2024 13:41:39 +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: <20241202093943.227786-1-dmantipov@yandex.ru> <1100513.1733306199@warthog.procyon.org.uk> To: Miklos Szeredi Cc: dhowells@redhat.com, Dmitry Antipov , Jeff Layton , Christian Brauner , netfs@lists.linux.dev, linux-fsdevel@vger.kernel.org, lvc-project@linuxtesting.org, syzbot+404b4b745080b6210c6c@syzkaller.appspotmail.com Subject: Re: syzbot program that crashes netfslib can also crash fuse 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: <1127212.1733319697.1@warthog.procyon.org.uk> Date: Wed, 04 Dec 2024 13:41:38 +0000 Message-ID: <1127213.1733319698@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 I seems to work, so you can add: Tested-by: David Howells Please don't mark it as closing the syzbot report as that pertains to netfslib, not fuse. syzbot attached both reproducers to the same overall report when it really ought to have split them. Note that a reproducer zombie is left behind and the filesystem can't be unmounted as it is busy (which may be due to the zombie). However, the zombie goes away and is replaced with another if the reproducer is run again. I wonder if I'm seeing a systemd bug as systemd should be reaping the zombies. David