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Fri, 08 Nov 2019 09:19:01 -0800 (PST) Received: from mbp.home ([2804:f1c:800:fc00:a4ea:5918:a7:f7cd]) by smtp.gmail.com with ESMTPSA id j18sm2766948qtn.52.2019.11.08.09.18.59 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 08 Nov 2019 09:19:00 -0800 (PST) Sender: Renato Botelho Subject: Re: svn commit: r354149 - head/sys/net From: Renato Botelho To: Gleb Smirnoff , src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org References: <201910291736.x9THa6Gd018030@repo.freebsd.org> <781d285f-0b6d-45f1-f4b4-4bab60b789ae@FreeBSD.org> Autocrypt: addr=garga@FreeBSD.org; prefer-encrypt=mutual; keydata= mQENBFn4ZqUBCACxJRWi57JkmsCrSU0gZd/CwB+B90OTUeXmF63lDPETOQ+pBA4+vJgzjW1C pv7rR25wxvESJKphxZJOOk9AXTXsg5QrhdP3+KQG/zNcKd2ukbt3ezkhdMx8q81wn4wY2oTl WXdGIVdDKvC8sCp1fc6pPKJin71/skb9wg6ThtlRFlv9en4f8QSVmRuzRKQ6VjCbl+yIpiye /I5BQ4I99uouPzPhzf9ya3cvp4xbiw5wSo1F3nLsThBT2osYy/nRNz2ciuCYyyX87dGhio0T 8Pxl37eBbGQvCGwPQBApCcfoiZBN/5F65Tt4p72gIqT+AYuqq5G7Bhj+fGTC7q0QotL/ABEB AAG0LFJlbmF0byBCb3RlbGhvIChGcmVlQlNEKSA8Z2FyZ2FARnJlZUJTRC5vcmc+iQFXBBMB CgBBAhsDBQkFo5qABQsJCAcDBRUKCQgLBRYDAgEAAh4BAheAFiEExxiLNMqsn7yXmTy7W54E w5ZrhhoFAln4aeUCGQEACgkQW54Ew5ZrhhpTIwf+OS+Gv/ITOy7+8D+8SKXNmkfczsTO+Uqz 6SraXcq32j1C4QcRQCwGPhVJJgKnFSvPm3kbNPFXaQh1zD+mTQ4r/Loc78Rz+fZljYcgNx7n aQKhd9pdpXaELOe+Y10jvGUrT0SE06Y10BP/NmQaLplt9qG8VgLAAB9ZcsuZ9pzbBbQjd9In OK5VcXQzHT/EBBQ1rHsl1Aq8TYdmjbKl+HKc1c8dJ5OfXrgnTIUwQdN1rauXbmH/YW/CKN7z zF59v/sPBTaWfFl2CS/BORhWhe1PBudrVZWFT0oJGNuG6k8dlnssoL/0ojFaN5w5xm8mvMAf uAuixGf4bK6C7hcE34D/ULkBDQRZ+GalAQgApiTibUM0OpeCcxf5YUep4F4y853ClU4TMqZO +ho38sz0GdshQWuBEBqahOtxapHUMtlmC+wJNCBAav5JYjHHrXXE9pgRm5EgVssDpMvplLB4 5CFdx5jBu02Bt9Wp5bD21TPH3rsYJUB3rYmxWfVmdRhNBERrCJu49OIsBSKAlIinx8altYrh Z7bO2C1hKOG6QHWRr4ml4HTD/gZ6TTfsrR+sktBNv/5ZRkcJNDVM+eOGagXkEUOVFe9KXynD 3KcZBbBKpwoaW5GK8OglKJt8ggUfc78CG1xk4b5nL8QCk0CBrC6VPPOYvXTpYSTHmx1QkElm 1iNu1Tc5ccvcyAwTswARAQABiQE8BBgBCgAmFiEExxiLNMqsn7yXmTy7W54Ew5ZrhhoFAln4 ZqUCGwwFCQWjmoAACgkQW54Ew5ZrhhoH3wf+KuIeDyvIJOui+0C5FD5r44Bwkj/SAUVUerfp 0qtRktc+BZoSifPs3Rqjh/PpwRvLTuJnSsiqWLz8NCTThogRzVqEcQHqZR3vOjtYM60sjYJ+ BGQl/bjm1C/YtWEEmKs7mJc+02U8qJA4rbNKSRRRoz6XngnuN6YC0fkeD7c7rxRhOg6OWasZ JinB9+dO1IH7eZ5c97v518qSaLRp0T7I+FpEGOp7tTFHaepZWEnuojr5D6jI1MOEywy0EWJu 3m0TYlh935I8o7gLABqoHEmUeW7JK7r91SZaFnr8zQ6XOAxkPh50uFMTNtNZTnM7k1pRv5Ov fms0VzARITYzTwmpDQ== Message-ID: Date: Fri, 8 Nov 2019 14:18:57 -0300 User-Agent: Mozilla/5.0 (Macintosh; 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RCVD_COUNT_THREE(0.00)[3]; IP_SCORE(-0.33)[ip: (2.74), ipnet: 2607:f8b0::/32(-2.34), asn: 15169(-2.01), country: US(-0.05)]; DKIM_TRACE(0.00)[gmail.com:+]; RCVD_IN_DNSWL_NONE(0.00)[3.4.7.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.b.8.f.7.0.6.2.list.dnswl.org : 127.0.5.0]; NEURAL_HAM_MEDIUM(-0.99)[-0.992,0]; FORGED_SENDER(0.30)[garga@FreeBSD.org,gargabsd@gmail.com]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; MID_RHS_MATCH_FROM(0.00)[]; TAGGED_FROM(0.00)[] X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 08 Nov 2019 17:19:04 -0000 On 08/11/19 13:27, Renato Botelho wrote: > On 29/10/19 14:36, Gleb Smirnoff wrote: >> Author: glebius >> Date: Tue Oct 29 17:36:06 2019 >> New Revision: 354149 >> URL: https://svnweb.freebsd.org/changeset/base/354149 >> >> Log: >> There is a long standing problem with multicast programming for NICs >> and IPv6. With IPv6 we may call if_addmulti() in context of processing >> of an incoming packet. Usually this is interrupt context. While most >> of the NIC drivers are able to reprogram multicast filters without >> sleeping, some of them can't. An example is e1000 family of drivers. >> With iflib conversion the problem was somewhat hidden. Iflib processes >> packets in private taskqueue, so going to sleep doesn't trigger an >> assertion. However, the sleep would block operation of the driver and >> following incoming packets would fill the ring and eventually would >> start being dropped. Enabling epoch for the full time of a packet >> processing again started to trigger assertions for e1000. >> >> Fix this problem once and for all using a general taskqueue to call >> if_ioctl() method in all cases when if_addmulti() is called in a >> non sleeping context. Note that nobody cares about returned value. >> >> Reviewed by: hselasky, kib >> Differential Revision: https://reviews.freebsd.org/D22154 > > Hi Gleb, > > I upgraded my laptop running 13-CURRENT from r354133 to r354437 and it > crashed during boot as you can see in the pictures [1]. It seems like > it crashed while it was configuring network. > > After bisect I managed to boot fine with r354148 and reproduce the crash > with this revision applied. > > Here is the relevant portion of my /etc/rc.conf: > > # Lagg > ifconfig_em0="up" > wlans_iwn0="wlan0" > ifconfig_wlan0="WPA" > create_args_wlan0="wlanaddr 3c:97:0e:48:3f:f8 up" > cloned_interfaces="lagg0" > ifconfig_lagg0="up laggproto failover laggport em0 laggport wlan0 DHCP" > ifconfig_lagg0_ipv6="inet6 accept_rtadv" > rtsold_enable="YES" > > [1] https://imgur.com/a/lBtq3FW I forgot to mention. If I disable IPv6 on lagg interface the crash is gone. -- Renato Botelho