From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Borkmann via iovisor-dev Subject: Re: [PATCH v3 net-next 00/12] bpf: rewrite value tracking in verifier Date: Wed, 28 Jun 2017 22:38:02 +0200 Message-ID: <595413AA.40502@iogearbox.net> References: <5953B436.6030506@iogearbox.net> <788035e1-1974-b48e-3008-d294194a8b05@solarflare.com> Reply-To: Daniel Borkmann Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Cc: netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, iovisor-dev , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Edward Cree , davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org, Alexei Starovoitov , Alexei Starovoitov Return-path: In-Reply-To: <788035e1-1974-b48e-3008-d294194a8b05-s/n/eUQHGBpZroRs9YW3xA@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iovisor-dev-bounces-9jONkmmOlFHEE9lA1F8Ukti2O/JbrIOy@public.gmane.org Errors-To: iovisor-dev-bounces-9jONkmmOlFHEE9lA1F8Ukti2O/JbrIOy@public.gmane.org List-Id: netdev.vger.kernel.org T24gMDYvMjgvMjAxNyAwNDoxMSBQTSwgRWR3YXJkIENyZWUgd3JvdGU6Cj4gT24gMjgvMDYvMTcg MTQ6NTAsIERhbmllbCBCb3JrbWFubiB3cm90ZToKPj4gSGkgRWR3YXJkLAo+Pgo+PiBEaWQgeW91 IGFsc28gaGF2ZSBhIGNoYW5jZSBpbiB0aGUgbWVhbnRpbWUgdG8gbG9vayBhdCByZWR1Y2luZyBj b21wbGV4aXR5Cj4+IGFsb25nIHdpdGggeW91ciB1bmlmaWNhdGlvbj8gSSBkaWQgcnVuIHRoZSBj aWxpdW0gdGVzdCBzdWl0ZSB3aXRoIHlvdXIKPj4gbGF0ZXN0IHNldCBmcm9tIGhlcmUgYW5kIGN1 cnJlbnQgIyB3b3JzdCBjYXNlIHByb2Nlc3NlZCBpbnNucyB0aGF0Cj4+IHZlcmlmaWVyIGhhcyB0 byBnbyB0aHJvdWdoIGZvciBjaWxpdW0gcHJvZ3MgaW5jcmVhc2VzIGZyb20gfjUzayB3ZSBoYXZl Cj4+IHJpZ2h0IG5vdyB0byB+NzZrLiBJJ20gYSBiaXQgd29ycmllZCB0aGF0IHRoaXMgcXVpY2ts eSBnZXRzIHVzIGNsb3NlIHRvCj4+IHRoZSB1cHBlciB+OThrIG1heCBsaW1pdCBzdGFydGluZyB0 byByZWplY3QgcHJvZ3JhbXMgYWdhaW4uIEFsdGVybmF0aXZlCj4+IGlzIHRvIGJ1bXAgdGhlIGNv bXBsZXhpdHkgbGltaXQgYWdhaW4gaW4gbmVhciBmdXR1cmUgb25jZSBydW4gaW50byBpdCwKPj4g YnV0IHByZWZlcmFibHkgdGhlcmUncyBhIHdheSB0byBvcHRpbWl6ZSBpdCBhbG9uZyB3aXRoIHRo ZSByZXdyaXRlPyBEbwo+PiB5b3Ugc2VlIGFueSBwb3NzaWJpbGl0aWVzIHdvcnRoIGV4cGxvcmlu Zz8KPiBUaGUgdHJvdWJsZSwgSSB0aGluaywgaXMgdGhhdCBhcyB3ZSdyZSBub3cgdHJhY2tpbmcg bW9yZSBpbmZvcm1hdGlvbiBhYm91dAo+ICAgZWFjaCByZWdpc3RlciB2YWx1ZSwgd2UncmUgbGVz cyBhYmxlIHRvIHBydW5lIGJyYW5jaGVzLiAgQnV0IG9mdGVuIHRoYXQKPiAgIGluZm9ybWF0aW9u IGlzIG5vdCBhY3R1YWxseSBiZWluZyB1c2VkIGluIHJlYWNoaW5nIHRoZSBleGl0IHN0YXRlLiAg U28gaXQKCkFncmVlLgoKPiAgIHNlZW1zIGxpa2UgdGhlIHdheSB0byB0YWNrbGUgdGhpcyB3b3Vs ZCBiZSB0byB0cmFjayB3aGF0IGluZm9ybWF0aW9uIGlzCj4gICB1c2VkIOKAlCBvciBhdCBsZWFz dCwgd2hpY2ggcmVnaXN0ZXJzIGFyZSByZWFkIGZyb20gKGluY2x1ZGluZyBlLmcuIHdyaXRpbmcK PiAgIHRocm91Z2ggdGhlbSBvciBwYXNzaW5nIHRoZW0gdG8gaGVscGVyIGNhbGxzKSDigJQgaW4g cmVhY2hpbmcgYSBzYWZlIHN0YXRlLgo+ICAgVGhlbiBvbmx5IHJlZ2lzdGVycyB3aGljaCBhcmUg dXNlZCBhcmUgcmVxdWlyZWQgdG8gbWF0Y2ggZm9yIHBydW5pbmcuCj4gQnV0IHRoYXQgdHJhY2tp bmcgd291bGQgcHJlc3VtYWJseSBoYXZlIHRvIHByb3BhZ2F0ZSBiYWNrd2FyZHMgdGhyb3VnaCB0 aGUKPiAgIHZlcmlmaWVyIHN0YWNrLCBhbmQgSSdtIG5vdCBzdXJlIGhvdyBlYXNpbHkgdGhhdCBj b3VsZCBiZSBkb25lLiAgU29tZW9uZQo+ICAgKHdhcyBpdCB5b3U/KSB3YXMgdGFsa2luZyBhYm91 dCByZXBsYWNpbmcgdGhlIGN1cnJlbnQgREFHIHdhbGtpbmcgYW5kCj4gICBwcnVuaW5nIHdpdGgg c29tZSBraW5kIG9mIGJhc2ljLWJsb2NrIHRoaW5nLCB3aGljaCB3b3VsZCBoZWxwIHdpdGggdGhp cy4KPiBTdW1tYXJ5OiBJIHRoaW5rIGl0IGNvdWxkIGJlIGRvbmUsIGJ1dCBJIGhhdmVuJ3QgbG9v a2VkIGludG8gdGhlIGRldGFpbHMKPiAgIG9mIGltcGxlbWVudGF0aW9uIHlldDsgaWYgaXQncyBu b3QgYWN0dWFsbHkgYnJlYWtpbmcgeW91ciBwcm9ncmFtcyAoeWV0KSwKPiAgIG1heWJlIGxlYXZl IGl0IGZvciBhIGZvbGxvd3VwIHBhdGNoIHNlcmllcz8KCkNvdWxkIHdlIGFkYXB0IHRoZSBsaW1p dCB0byAxMjhrIHBlcmhhcHMgYXMgcGFydCBvZiB0aGlzIHNldApnaXZlbiB3ZSBrbm93IHRoYXQg d2UncmUgdHJhY2tpbmcgbW9yZSBtZXRhIGRhdGEgaGVyZSBhbnl3YXk/ClRoZW4gd2UgY291bGQg cG90ZW50aWFsbHkgYXZvaWQgZ29pbmcgdmlhIC1zdGFibGUgbGF0ZXIgb24sCmJpZ2dlc3QgcGFp biBwb2ludCBpcyB1c3VhbGx5IHRyYWNraW5nIGRpZmZlcmVuY2VzIGluIExMVk0KY29kZSBnZW5l cmF0aW9uIChlLmcuIGRpZmZlcmVuY2VzIGluIG9wdGltaXphdGlvbnMpIGFsb25nIHdpdGgKdmVy aWZpZXIgY2hhbmdlcyB0byBtYWtlIHN1cmUgdGhhdCBwcm9ncmFtcyBzdGlsbCBrZWVwIGxvYWRp bmcKb24gb2xkZXIga2VybmVscyB3aXRoIGUuZy4gbmV3ZXIgTExWTTsgb25lIG9mIHRoZSBpc3N1 ZXMgaXMgdGhhdApwcnVuaW5nIGNhbiBiZSBxdWl0ZSBmcmFnaWxlLiBFLmcuIHdvcnN0IGNhc2Ug YWRkaW5nIGEgc2ltcGxlCnZhciBpbiBhIGJyYW5jaCB0aGF0IExMVk0gYXNzaWducyBhIHN0YWNr IHNsb3QgdGhhdCB3YXMgb3RoZXJ3aXNlCm5vdCB1c2VkIHRocm91Z2hvdXQgdGhlIHByb2cgY2Fu IGNhdXNlIGEgc2lnbmlmaWNhbnQgaW5jcmVhc2Ugb2YKdmVyaWZpZXIgd29yayAocnVuIGludG8g dGhpcyBtdWx0aXBsZSB0aW1lcyBpbiB0aGUgcGFzdCBhbmQKaXMgYSBiaXQgb2YgYSBwYWluIHRv IHRyYWNrIGRvd24gYWN0dWFsbHkpLiBJZiB3ZSBjb3VsZCBrZWVwCnNvbWUgYnVmZmVyIGluIEJQ Rl9DT01QTEVYSVRZX0xJTUlUX0lOU05TIGF0IGxlYXN0IHdoZW4gd2Uga25vdwp0aGF0IG1vcmUg d29yayBpcyBuZWVkZWQgYW55d2F5IGZyb20gdGhhdCBwb2ludCBvbndhcmQsIHRoYXQKd291bGQg YmUgZ29vZC4KX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18K aW92aXNvci1kZXYgbWFpbGluZyBsaXN0Cmlvdmlzb3ItZGV2QGxpc3RzLmlvdmlzb3Iub3JnCmh0 dHBzOi8vbGlzdHMuaW92aXNvci5vcmcvbWFpbG1hbi9saXN0aW5mby9pb3Zpc29yLWRldgo=