From nobody Sun Oct 25 17:28:29 2026 X-Original-To: dev-commits-src-branches@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 4jCNyP3TZ4z6wpSY for ; Sun, 25 Oct 2026 17:28:29 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (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) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 4jCNyP2bwmz3DLR for ; Sun, 25 Oct 2026 17:28:29 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1792949309; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=Ck5kDUKH9lXz1ZmAcfexk2idOisv12ClmYNOkJ2cCdU=; b=q8spjXyvx0HNCo0ZUKeM3zxFPcpNpzAfQzU+0AI6eSrIcOTPP1t6iMCMX51C9BxBwjJ7A1 DOSAwyuPTfzsbkWPUqII5nsrCZIApvyIJDt1zyRMGgqwUPBEqR3+bmoY45LDmwLA9yxl5R ieviGJkKe+6ZLGbBTDJGvJpB3DikixsZwDtNsPodmw7ZuqzyTY3T1DpumvFIa9xCKLYNIr xJPDjlOcMJH0gWkC7pBhG3G4dJsGSrVT6DBS/cmdgNjV6+X34h2XmWpQ16Cvd4I2Y33u9m +b60LhR3LZnn85qbSs14J17HgWgqX3RlvCknObEpXMm4Ra0hcZezejdUFLRPCw== ARC-Seal: i=1; a=rsa-sha256; d=freebsd.org; s=dkim; cv=none; t=1792949309; b=E1z6vD02sQ8kz9EdfsVfP/PyjJyLg8Gqg6Vc7XX/yJ8oB37ujQHLCz5YMZJhv5Crr4zmqb m0lUh42pQmuh/i0ZnyjL0EdnkcVbUfhkLuFj2WyMoJ8H0qw52VGCe3fBFsmfgb0uzSi3/k K4Y9zPGvoqynyIvK3sAK6r/wQt+7tpymbhDayLUfhRGM14VpxHu5hfi/loocA9IvfNP6JZ RoGP45aVv30z31wsDISAL7RMyesh6BLpwc/XHJ7N4JxOiGTWMVVGnI42d/z7WyLljzvKNh IxGG4n2KDCIvapeI40IKE8dc/u6Mo6gzE0XlquS7B3VH2ZM9jVE5vOzxz3nsZw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1792949309; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=Ck5kDUKH9lXz1ZmAcfexk2idOisv12ClmYNOkJ2cCdU=; b=GOSuTNC4ZY0bgJ7XM96ID+bkKqlZaOi5mXICy7D04IMwiIm7zmJQmsCYYllryFl43vWKGk y3OhCCHMjUSNipD3QgFL4X7t983TbZ5wp8IzJ9oH8iVSD8cHRdr5nNGfNNsna8/SbObL7y mDEBgS+8QAuQxzT9uFB/ilHaqRNBHOAaBUfQZN3dQPQLw29WfNoP5xWTjagXv/GSgGmJyg Dc9aw4GbHHS2PFXtG4upz01aZMqlyxDxWvqKv8WiiySbq9hnmscaQtgY4vt8kSQ0aaeywV 5DWuj6JaqNyxjkRWGpLbTVnJLdBK+YV0J69HMdvq8tHcGzIbXv60bI/1CKif/w== ARC-Authentication-Results: i=1; mx1.freebsd.org; none Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) by mxrelay.nyi.freebsd.org (Postfix) with ESMTP id 4jCNyP2H16zwmQ for ; Sun, 25 Oct 2026 17:28:29 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from git (uid 1279) (envelope-from git@FreeBSD.org) id 1df34 by gitrepo.freebsd.org (DragonFly Mail Agent v0.13+ on gitrepo.freebsd.org); Sun, 25 Oct 2026 17:28:29 +0000 To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Alexander Leidinger Subject: git: 83fdec2d26fc - stable/14 - vfs_register: prevent kernel crash List-Archive: https://lists.freebsd.org/archives/dev-commits-src-branches X-BeenThere: dev-commits-src-branches@freebsd.org Sender: owner-dev-commits-src-branches@FreeBSD.org List-Id: Commits to the stable branches of the FreeBSD src repository List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: netchild X-Git-Repository: src X-Git-Refname: refs/heads/stable/14 X-Git-Reftype: branch X-Git-Commit: 83fdec2d26fcc856805c19aef54d8bba169d32a0 Auto-Submitted: auto-generated Date: Sun, 25 Oct 2026 17:28:29 +0000 Message-Id: <6ade3c3d.1df34.8b03ca8@gitrepo.freebsd.org> The branch stable/14 has been updated by netchild: URL: https://cgit.FreeBSD.org/src/commit/?id=83fdec2d26fcc856805c19aef54d8bba169d32a0 commit 83fdec2d26fcc856805c19aef54d8bba169d32a0 Author: Alexander Leidinger AuthorDate: 2026-09-23 12:30:42 +0000 Commit: Alexander Leidinger CommitDate: 2026-10-25 17:28:23 +0000 vfs_register: prevent kernel crash vfs_register hashes the filesystem name and uses it for sysctl oids. A filesystem name which hashes to 0 crashes in sysctl_register_oid(). Map 0 to 1 to prevent the kernel crash. This can be tested with "udf2" as the filesystem name. MFC after: 1 month MFC to: stable/15 stable/14 Reviewed by: kib Differential Revision: https://reviews.freebsd.org/D59839 (cherry picked from commit 3897678132e71df70dbb18bf8e2f19124beee5d7) --- sys/kern/vfs_init.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sys/kern/vfs_init.c b/sys/kern/vfs_init.c index 880a8780c367..bf2d8aa2d152 100644 --- a/sys/kern/vfs_init.c +++ b/sys/kern/vfs_init.c @@ -432,6 +432,8 @@ vfs_register(struct vfsconf *vfc) */ hashval = fnv_32_str(vfc->vfc_name, FNV1_32_INIT); hashval &= 0xff; + if (hashval == 0) + hashval = 1; secondpass = 0; do { /* Look for and fix any collision. */