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 0C1AD207A27 for ; Tue, 29 Oct 2024 21:01:21 +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=1730235684; cv=none; b=IqoDUt789kysxI7geeV3V39QkOoKmsxlY8dV6sQ5gVe1V6A/SmxLa3MGgITrtYltmKzpw7bTik/vmUsjGY2PqOfsXBNnx5+lnBGYkf4Qo2TDyfxYv31w6lt0Y5NlNUk3eIkoz5Kl+wjrq2meMet+2SmVoSoRxmHkKV7IV7OuRHk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730235684; c=relaxed/simple; bh=S1703cyT+edCIiD/vyQbgM7U8QSHOkGBkJY7OT0F0kk=; h=From:To:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=vCc2F23rcZxJtNlCh+pgRO1ajsbRcUpNUnlkuRxPYTPMw+ChaLgZOxlc/x+yS3XX7IOn71fTo+0uduVV6Mkc/oIMZLmdgJPa22Bx/WIzUlpVAXdS5/qu1JpJBlZtQe0dnCpYYxchxOrJlDk2X0dyzq8hoPb8fQUG0HZuDAH1UEI= 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=IetTBt70; 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="IetTBt70" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1730235681; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=43e2Evie9F4dANboMZ7JeIucTF4uD+J7mlJDUVVEjDg=; b=IetTBt70Th4rbil52AxajooDf73mdj8RHCnwTjZUI34ZwNtIFWELZL6srEwEq5m533E2cq IK2nvIeNbNwbZsBPDZxkrnG2nHGGWVW1nZM85UHhb2l22cvxjBT5Be6ReMpv+VWwjzh4uW SHobtO2WehiF9nwNNXWQW56b68Dc8Sw= Received: from mail-ej1-f72.google.com (mail-ej1-f72.google.com [209.85.218.72]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-225-AiYSaQduMqyq-qWv1w6Bgw-1; Tue, 29 Oct 2024 17:01:14 -0400 X-MC-Unique: AiYSaQduMqyq-qWv1w6Bgw-1 Received: by mail-ej1-f72.google.com with SMTP id a640c23a62f3a-a99fa9f0c25so399921766b.3 for ; Tue, 29 Oct 2024 14:01:14 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1730235672; x=1730840472; h=mime-version:message-id:date:references:in-reply-to:subject:to:from :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=43e2Evie9F4dANboMZ7JeIucTF4uD+J7mlJDUVVEjDg=; b=ML7P5ApCh8CjULMMxu6cXTfi0AUaOlhcWvAAG0IDLCn+ytDnN3jFow76alp81HDXaJ ZxVzNXmRzH1vMamg4unz77ZGaOtoTY5G/U9pTdwm8GEUn2emIfvrTCm7oAxdByQw3/7I +LUpzMHywtvVhAofn81q32T4GAbcM7NGnv92vwUHj8FlzO01hxg/wqkwhm6uW+xkc3YD oXLKxTzyJfRHoXECwSVMc+ZWdMGcW6DJmSOYsbnhw8dPbdkM7hIZA9QdIvRqzfq1++r0 1wS0EMSCGquwSWXcs9VJMIfrmwrZ/kgKTVdJgJw+WPsFTdwOg3R2xFfB7+y2TVS+NfqS JiHg== X-Forwarded-Encrypted: i=1; AJvYcCUASC0dIOllehV1DVbMpn4r7yWVVo117D5rbq5RxskJi/5Aw9mk9tvsvUlLINonu75MwhyGALE=@vger.kernel.org X-Gm-Message-State: AOJu0YzgJj8y6ImN06TY22tfn6swYCGLowHcKa3TffZ3X36jKXjhug2E JWWfD8v2LMKE3sEHtfA5ggmUrCVIeLjQp8kJzRLTh/V7H4EExfa0PiYcZU6HzDnKIaISJr3uBAo LGIWd8n4DFiJgGNC3jV8sgvA6NIb9H+SziS9arYOvDeoh+JKB+d6ikQ== X-Received: by 2002:a17:907:1c29:b0:a99:e67a:d12d with SMTP id a640c23a62f3a-a9de61ce61bmr1233011866b.48.1730235672449; Tue, 29 Oct 2024 14:01:12 -0700 (PDT) X-Google-Smtp-Source: AGHT+IF1qigmT2ZHXS67eFLNcxyTAr/uVtukSkT86//Ve1k4KoNyQor1IgHemQv7UZizKSFDozLXDg== X-Received: by 2002:a17:907:1c29:b0:a99:e67a:d12d with SMTP id a640c23a62f3a-a9de61ce61bmr1233008866b.48.1730235672019; Tue, 29 Oct 2024 14:01:12 -0700 (PDT) Received: from alrua-x1.borgediget.toke.dk ([45.145.92.2]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a9b1f297b04sm507491966b.134.2024.10.29.14.01.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 29 Oct 2024 14:01:11 -0700 (PDT) Received: by alrua-x1.borgediget.toke.dk (Postfix, from userid 1000) id 1822C164B269; Tue, 29 Oct 2024 22:01:10 +0100 (CET) From: Toke =?utf-8?Q?H=C3=B8iland-J=C3=B8rgensen?= To: syzbot , akpm@linux-foundation.org, davem@davemloft.net, edumazet@google.com, hawk@kernel.org, ilias.apalodimas@linaro.org, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [net?] BUG: Bad page state in bpf_test_run_xdp_live In-Reply-To: <671ecfe4.050a0220.2b8c0f.01ed.GAE@google.com> References: <671ecfe4.050a0220.2b8c0f.01ed.GAE@google.com> X-Clacks-Overhead: GNU Terry Pratchett Date: Tue, 29 Oct 2024 22:01:10 +0100 Message-ID: <8734ked3op.fsf@toke.dk> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain #syz test --- a/net/bpf/test_run.c +++ b/net/bpf/test_run.c @@ -246,6 +246,7 @@ static void reset_ctx(struct xdp_page_head *head) head->ctx.data_meta = head->orig_ctx.data_meta; head->ctx.data_end = head->orig_ctx.data_end; xdp_update_frame_from_buff(&head->ctx, head->frame); + head->frame->mem = head->orig_ctx.rxq->mem; } static int xdp_recv_frames(struct xdp_frame **frames, int nframes,