From nobody Sat Apr 18 17:14:32 2026 X-Original-To: current@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4fydf4446hz678tq; Sat, 18 Apr 2026 17:14:36 +0000 (UTC) (envelope-from david@catwhisker.org) Received: from mx.catwhisker.org (mx.catwhisker.org [107.204.234.170]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4fydf35wTjz3flG; Sat, 18 Apr 2026 17:14:35 +0000 (UTC) (envelope-from david@catwhisker.org) Authentication-Results: mx1.freebsd.org; none Received: from albert.catwhisker.org (localhost [127.0.0.1]) by albert.catwhisker.org (8.18.1/8.18.1) with ESMTP id 63IHEYv0001383; Sat, 18 Apr 2026 17:14:34 GMT (envelope-from david@albert.catwhisker.org) Received: (from david@localhost) by albert.catwhisker.org (8.18.1/8.18.1/Submit) id 63IHEWi0001382; Sat, 18 Apr 2026 10:14:32 -0700 (PDT) (envelope-from david) Date: Sat, 18 Apr 2026 10:14:32 -0700 From: David Wolfskill To: Michael Tuexen Cc: current@freebsd.org, Ricardo Branco , freebsd-current@freebsd.org Subject: Re: panic: assertion failed in iflib_txq_drain() Message-ID: Reply-To: current@freebsd.org Mail-Followup-To: current@freebsd.org, Michael Tuexen , Ricardo Branco , freebsd-current@freebsd.org References: <9d640ae4-7133-4d4f-917f-d715ab71ee7b@suse.de> List-Id: Discussions about the use of FreeBSD-current List-Archive: https://lists.freebsd.org/archives/freebsd-current List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-current@FreeBSD.org MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="o5AnCuK76P7/FHA+" Content-Disposition: inline In-Reply-To: X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:7018, ipnet:107.192.0.0/12, country:US] X-Rspamd-Queue-Id: 4fydf35wTjz3flG X-Spamd-Bar: ---- --o5AnCuK76P7/FHA+ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Apr 18, 2026 at 03:53:33PM +0200, Michael Tuexen wrote: > ... > > So... one of the machines on which I track head got this, as well -- my > > (mostly-)headless build machine. (2 laptops, updated in sync with the > > build machine, did not panic. One of those also uses a wired NIC.) > Do the network drivers of the machines not being affected use iflib? Apparently not -- they are em(4), iwm(4), & iwn(4), while the panicking machine uses igb(4). > I do see the problem also on one of my machines and local testing shows t= hat > https://cgit.FreeBSD.org/src/commit/?id=3D3fade68cfdf95ee0b517b5d69b270bd= 8da633404 > is the problem. At least reverting it locally resolves the problem. > Can you confirm this? I can, and do: after reverting main-n285140-3fade68cfdf9 & rebuilding, I am able to ssh in without issue; the machine reports: freebeast(16.0-C)[2] uname -aUK FreeBSD freebeast.catwhisker.org 16.0-CURRENT FreeBSD 16.0-CURRENT #549 mai= n-n285180-23a84efeb191: Sat Apr 18 17:01:25 UTC 2026 root@freebeast.cat= whisker.org:/common/S3/obj/usr/src/amd64.amd64/sys/GENERIC amd64 1600015 16= 00015 Thanks! Peace, david --=20 David H. Wolfskill david@catwhisker.org See https://www.catwhisker.org/~david/publickey.gpg for my public key. --o5AnCuK76P7/FHA+ Content-Type: application/pgp-signature; name=signature.asc -----BEGIN PGP SIGNATURE----- iNUEARYKAH0WIQRCec5RsK7Enudh3yGB9MJ9AwUELQUCaeO7+F8UgAAAAAAuAChp c3N1ZXItZnByQG5vdGF0aW9ucy5vcGVucGdwLmZpZnRoaG9yc2VtYW4ubmV0NDI3 OUNFNTFCMEFFQzQ5RUU3NjFERjIxODFGNEMyN0QwMzA1MDQyRAAKCRCB9MJ9AwUE LRW4AQDp4d0eMWEC5UhpHfZQnxLewpzLeC0HOq4WTUGGpPyUngD+JVAmXC23MOQy 9Xvmss9AU25Ir1xxmOqeJvlexL5Tkww= =HUgy -----END PGP SIGNATURE----- --o5AnCuK76P7/FHA+--