From nobody Sat Mar 14 15:54:34 2026 X-Original-To: freebsd-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 4fY5Ww08rfz6T7W2; Sat, 14 Mar 2026 15:54:36 +0000 (UTC) (envelope-from imb@protected-networks.net) Received: from mail.protected-networks.net (mail.protected-networks.net [202.12.127.228]) (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-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "mail.protected-networks.net", Issuer "R12" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4fY5Wv45ffz3WYZ; Sat, 14 Mar 2026 15:54:35 +0000 (UTC) (envelope-from imb@protected-networks.net) Authentication-Results: mx1.freebsd.org; none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d= protected-networks.net; h=content-transfer-encoding:content-type :content-type:in-reply-to:from:from:content-language:references :subject:subject:user-agent:mime-version:date:date:message-id; s=201508; t=1773503674; bh=UdNaJB21kMYmUIQ3rOzi+i+0gor9d3BnTRMC 6no983g=; b=h81x/Q5OvHzv1D8JBYzXgdqrO1K01QLa3SZ/roKBGaGKl33a8AgM fH6cu/mrzYpSMBDB9WT9jW/yvzMZq5sVNj+OzjoPF0hbQDlvP1PDlq5CeGASeJjs kQcSXM37KPHjSHPRuN907dnR5Z9/YOBTiY0Ze9nC+cCYSo62U1DmJx4= Received: from [192.168.1.9] (d5540.auburn.protected-networks.net [192.168.1.9]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519MLKEM768 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: imb@mail.protected-networks.net) by mail.protected-networks.net (Postfix) with ESMTPSA id 78B1849917; Sat, 14 Mar 2026 11:54:34 -0400 (EDT) Message-ID: <320b245d-85fb-49ba-9ef4-d5d335df39ed@protected-networks.net> Date: Sat, 14 Mar 2026 11:54:34 -0400 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 User-Agent: Mozilla Thunderbird Subject: Re: panic: supervisor write data, protection violation (vn_read/copyout_smap_erms?) To: current@freebsd.org, Subbsd , freebsd-current Current References: Content-Language: en-NZ Cc: kib@freebsd.org From: Michael Butler In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit 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:5716, ipnet:202.12.127.0/24, country:US] X-Rspamd-Queue-Id: 4fY5Wv45ffz3WYZ X-Spamd-Bar: ---- On 3/14/26 10:23, David Wolfskill wrote: > On Sat, Mar 14, 2026 at 09:28:53AM -0400, Michael Butler wrote: >> To narrow this .. I can reliably start a kernel built at or before commit >> 277830b4d3ae. >> >> On 3/14/26 09:06, Subbsd wrote: >>> ... >>> uname -a: >>> >>> FreeBSD host1.my.domain 16.0-CURRENT FreeBSD 16.0-CURRENT #0 >>> main-f91464171d61: Sat Mar 14 12:35:27 UTC 2026 >>> root@host1.my.domain:/usr/obj/usr/jails/src/src_16/src/amd64.amd64/sys/GENERIC >>> amd64 >> .... > > I updated my headless build machine from main-n284480-9a9f93bcf1aa to > main-n284504-f91464171d61 this morning, but it panicked prior to > completing the transition to multi-user mode. > > Checking > https://lists.freebsd.org/archives/dev-commits-src-main/2026-March/040570.html, > blame is cast on 914a53570750; further in that thread, kib@ provides a > tentative patch (but I have not tested it). The patch at the end of this thread appears to solve the problem. Thanks! Michael