Date: Sat, 18 Apr 2026 19:38:37 +0200 From: Michael Tuexen <tuexen@FreeBSD.org> To: current@freebsd.org Cc: Ricardo Branco <rbranco@suse.de>, freebsd-current@freebsd.org Subject: Re: panic: assertion failed in iflib_txq_drain() Message-ID: <F7BF6DA9-2AB5-4438-BB9F-9D3378911561@FreeBSD.org> In-Reply-To: <aeO7-Io1WMKhriEu@albert.catwhisker.org> References: <9d640ae4-7133-4d4f-917f-d715ab71ee7b@suse.de> <aeNz1A3RtqruU_Ys@albert.catwhisker.org> <EC59DE6A-BD57-4213-948D-F41885CF7AEC@FreeBSD.org> <aeO7-Io1WMKhriEu@albert.catwhisker.org>
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> On 18. Apr 2026, at 19:14, David Wolfskill <david@catwhisker.org> wrote: > > 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 that >> https://cgit.FreeBSD.org/src/commit/?id=3fade68cfdf95ee0b517b5d69b270bd8da633404 <https://cgit.freebsd.org/src/commit/?id=3fade68cfdf95ee0b517b5d69b270bd8da633404>; >> 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 main-n285180-23a84efeb191: Sat Apr 18 17:01:25 UTC 2026 root@freebeast.catwhisker.org:/common/S3/obj/usr/src/amd64.amd64/sys/GENERIC amd64 1600015 1600015 > > Thanks! You could also disable TSO. I will put up a review for a fix soon. Best regards Michael > > Peace, > david > -- > David H. Wolfskill david@catwhisker.org > > See https://www.catwhisker.org/~david/publickey.gpg for my public key.home | help
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