From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 8D4D653A7 for ; Sat, 10 Aug 2024 03:57:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723262239; cv=none; b=VPrJb8ndOyAqF0qsiXuMFruBE5VWRzf3dJMs83vAAPoZ5R3fNHwAASi60cduA7q1864lnxSwIczoAQVISmwjqCzblgsjCMp7yTJdFu6pE5XYrC0p3aEXGQPPNvdqBy6fmvEaEX3jf3GWTAlR/PVSMJ3ZBp7pO//c+Za4+Wq+7oM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723262239; c=relaxed/simple; bh=xEPbBk1VA07L0o43Q5bq31n4KUXD3hlTdV3SUs2ur3Y=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=G1uj1gicKCTTaIq5Jd5rIM4G48lDgoG/YOC6mRxacT1dlDpBdd0R+VPsmYo/fpGjldnvJgBJd8PLqs+t1hT3GbSb+2W7cw9Moc5LBVgp5sDgiwOp4cj0DZ8FDNlxYQuCNN73ogbweVG0FhoW9TbazGvf0/a+QfvpkAyLZTglorQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Yj/FXNJ6; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Yj/FXNJ6" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 96F80C32781; Sat, 10 Aug 2024 03:57:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1723262239; bh=xEPbBk1VA07L0o43Q5bq31n4KUXD3hlTdV3SUs2ur3Y=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=Yj/FXNJ6Drg4UU/Y4wxZ9kgvxSYzU6Um5KBIshkVX/88rUPdsmgLX/SPba+00oIpO XYhCSrqiFiDvg4rkzvHMuA0pK3O/vrwJitUyqfGyO9gjL2VeXo0rYpgYmuOYSFBqQi 6jvhubgmy1UsmOUh6f+1mhqWPbU/VBu9wIJVIdZpqo9jXkJv/18G5FX9NEsOPk586d 6TFQg72qAqRNq38/eoIQwhAS5tGcIG9VLtEpyQNkfxcaAjm1XiW3OysjtVfApQVKz5 2MUK4sB0Z95lYwWxX0EC/w+ZEoat0vXGb1F+tUy2R1Kb0Sp0aVyp9yN06VvrMD/tpg 3CGns5b4xu3Ow== Date: Fri, 9 Aug 2024 20:57:17 -0700 From: Jakub Kicinski To: Yonglong Liu Cc: Yunsheng Lin , , , , , , Jesper Dangaard Brouer , Alexander Duyck Subject: Re: [RFC net] net: make page pool stall netdev unregistration to avoid IOMMU crashes Message-ID: <20240809205717.0c966bad@kernel.org> In-Reply-To: <758b4d47-c980-4f66-b4a4-949c3fc4b040@huawei.com> References: <20240806151618.1373008-1-kuba@kernel.org> <523894ab-2d38-415f-8306-c0d1abd911ec@huawei.com> <20240807072908.1da91994@kernel.org> <977c3d82-e2f0-4466-9100-7ea781e91ce1@huawei.com> <20240808070511.0befbdde@kernel.org> <758b4d47-c980-4f66-b4a4-949c3fc4b040@huawei.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Fri, 9 Aug 2024 14:06:02 +0800 Yonglong Liu wrote: > [ 7724.272853] hns3 0000:7d:01.0: page_pool_release_retry(): eno1v0 > stalled pool shutdown: id 553, 82 inflight 6706 sec (hold netdev: 1855491) Alright :( You gotta look around for those 82 pages somehow with drgn. bpftrace+kfunc the work that does the periodic print to get the address of the page pool struct and then look around for pages from that pp.. :(