From nobody Sun Oct 25 17:27:26 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 4jCNxC07ddz6wpQ4 for ; Sun, 25 Oct 2026 17:27:27 +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 4jCNxB4sQZz3D6W for ; Sun, 25 Oct 2026 17:27:26 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1792949246; 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=5/jyjB5yAywDWZr/kuOGbqeCdcvCX2u99oRR7QE0Xwc=; b=u5rgj/LTXsgKbRZn+xMFQst9Ke3AMc5jNJ9VadjwNZWGu+RlmJ+stcTZ9+I7qveipagqFn uVgOyGQv28AYynOfA8CfP1nFzfheKro9riVrSmiOItNJNwUJEA5dLie3DPtwymMRvJwsrb AqgxCHDVQ7DEGPBcVnXvYjK6aHqr2E5AJx0Va0mi+0hK5E8IqnbIETzal2jc82ivcbJdcj 2pFjYr9Xaa/AsBd8C85Teuo15IEOUuTLkEmSlDEJBXlAl+dknt+w3Cg4G+c/zb6z3zVH3t cehUV+uS0jeb2W/EW4d1n0fdsh0ZgPtofD/nPVwAEhcnB7J2vzPW7W+a2gSQMg== ARC-Seal: i=1; a=rsa-sha256; d=freebsd.org; s=dkim; cv=none; t=1792949246; b=hpAfhgczv1VsEN4f8aOndCF3xm21RDC0hMtRJJJXBzZTmnKt2g/1reshg3YGTeIr0T7zkM S8WfO8YoGA9R840L86QYdP+HGpLLAxNHagnGETbbYDYEe570/LmX+8a5pEf0jKsr0nSt0D /aeGIf8uF5d3OnkFTzLUBC9+9MnJRyRNH6oUfdxdrjnaAKsrYKswMFccJHgQ4aQaon5dsn nss4m115GSTa56JaLgTqJ6044w/EXu4/VFHkXzHRbn2kipb2M0N4yeTlDIt5JfZ4duMDTY QR+lHHiwxKPsOoMtN7rbqqJquluErkgXzsKs6Bjdfcq3RBH8DCAvsTwPDyYK1Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1792949246; 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=5/jyjB5yAywDWZr/kuOGbqeCdcvCX2u99oRR7QE0Xwc=; b=gNXyT/C5UUbp2ngWxl8l9SmgdJEkaEszDmgsvpTG5iGVrK4xOK89VCIrUJ6iUAq6bvXz5k VC34eqooPu6Gku09bKTBd7hwlJDLNuehLIWuxLCl1LplFhDUVOFnrzwuYxlv12oRukMS+7 bRKVZcS+XvPp4N+Jbryc/MRsPizFvvDrQOXJSvbkWJltEnCw82fm4bxXnOtOmAqUSqSlHC a+OFrF75cTI1dHs7YpY0VeBnT84155yVELIyW5ESCyAb5+psorO+Nx2sAv+i3LwZHGb501 /atbs4v+FYzWV6se6bbbNsuH4rkSuOfUCt5+EKIkPHj1+wxZkumfXWBDgekKSQ== 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 4jCNxB41svzwy1 for ; Sun, 25 Oct 2026 17:27:26 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from git (uid 1279) (envelope-from git@FreeBSD.org) id 1f652 by gitrepo.freebsd.org (DragonFly Mail Agent v0.13+ on gitrepo.freebsd.org); Sun, 25 Oct 2026 17:27:26 +0000 To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Alexander Leidinger Subject: git: f581891cd16c - stable/15 - 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/15 X-Git-Reftype: branch X-Git-Commit: f581891cd16c21ba17ad820d163a8c20d72470d1 Auto-Submitted: auto-generated Date: Sun, 25 Oct 2026 17:27:26 +0000 Message-Id: <6ade3bfe.1f652.757d51db@gitrepo.freebsd.org> The branch stable/15 has been updated by netchild: URL: https://cgit.FreeBSD.org/src/commit/?id=f581891cd16c21ba17ad820d163a8c20d72470d1 commit f581891cd16c21ba17ad820d163a8c20d72470d1 Author: Alexander Leidinger AuthorDate: 2026-09-23 12:30:42 +0000 Commit: Alexander Leidinger CommitDate: 2026-10-25 17:27:22 +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 ceda770cb714..b4817f172edd 100644 --- a/sys/kern/vfs_init.c +++ b/sys/kern/vfs_init.c @@ -427,6 +427,8 @@ 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. */