From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DC820EB64D0 for ; Tue, 13 Jun 2023 18:46:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239325AbjFMSqZ (ORCPT ); Tue, 13 Jun 2023 14:46:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42408 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232686AbjFMSqU (ORCPT ); Tue, 13 Jun 2023 14:46:20 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1F2B61BDC for ; Tue, 13 Jun 2023 11:45:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1686681935; 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=SIDR2dqRwvLDufVgXSXj8KatzblZX0gs/2FHCG5UpAY=; b=h0ku6a2aIZa4cQbhSCtohVB9tPYhTSMnmKpX+Uh11jfbbDdRql5cXZTdBYVtbJ5562u3oZ 1m6MY2SeVLArzZ9nq5b1i5fyaxpU0BAqGydOB1pMmkrvNP4AXtv/NKhqmARfLOvbkK7k3n La3gVkI4aN+eCu3oI+RTSiplnH4OOmY= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-553-xTvb-8OnNO2OYEr7YExcXQ-1; Tue, 13 Jun 2023 14:45:32 -0400 X-MC-Unique: xTvb-8OnNO2OYEr7YExcXQ-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id D9C97101A53B; Tue, 13 Jun 2023 18:45:23 +0000 (UTC) Received: from warthog.procyon.org.uk (unknown [10.42.28.67]) by smtp.corp.redhat.com (Postfix) with ESMTP id AF880492C1B; Tue, 13 Jun 2023 18:45:22 +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: <20230613111505.249ccb18@kernel.org> References: <20230613111505.249ccb18@kernel.org> <000000000000ae4cbf05fdeb8349@google.com> To: Jakub Kicinski Cc: dhowells@redhat.com, syzbot , bpf@vger.kernel.org, davem@davemloft.net, dsahern@kernel.org, edumazet@google.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [net?] KASAN: stack-out-of-bounds Read in skb_splice_from_iter MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <920481.1686681922.1@warthog.procyon.org.uk> Date: Tue, 13 Jun 2023 19:45:22 +0100 Message-ID: <920483.1686681922@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 3.1 on 10.11.54.10 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Jakub Kicinski wrote: > Hi David, are you fighting all these fires reported by syzbot? > I see another one just rolled in from yesterdays KCM changes. I'm trying to pin down a bug in the old DIO code whilst attending the AFS Workshop. I'll get to the sendpage reports in a bit. I think a bunch of them are probably the same issue in AF_ALG hashing. They do at least have reproducers. David