From nobody Wed Jul 22 00:15:50 2026 X-Original-To: dev-commits-src-all@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 4h4ZXk4gCNz6kTYn for ; Wed, 22 Jul 2026 00:15:50 +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 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "YR1" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4h4ZXk32bCz3R6d for ; Wed, 22 Jul 2026 00:15:50 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1784679350; 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=P0KtCNeb3S0mgvmpU5RDYaFei1rZhiB9pcxdeDWtrqw=; b=bPpki3frGYFk08HEBkOsGhy2UOktRbKo6IKwjJpJOq/sGeBkupbzSA4+IOK2wNYt8wqcp5 62r4UPgrtsIv4pTgXlkVQdS7ZczhXH2mp9jCET/9B7vmkMpj5xmDeIosbcvB3lgMY5aHsl 0iSTTvIhmZcnvD+Ass2GHeEMx6IlW0QnXWhJ1+q6ARXnEC1iuzMgjBWh4bEyc95kDks9ZA SYoldj+ovWcPnhdR791H10FLyz79+bcwQZzya1rTlYNjMXZKd63/t9avgUbtbu+u+G1onx 3Nke6EX6qZFG60qDU3RMl72cXsGDlQ8l5mV8gh0uzhdiF3g2NMG9xq5x4jda5g== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1784679350; a=rsa-sha256; cv=none; b=LIWypH/bN+VM3KzwMhr+EADbxWHkDccnQQclWh3FbxtSyGO+Liai/6kiiPwiN/EXg8NXfE HGTMJF9jIS6+oeFYTU8OVO1Z6mUaa02A8ydek3a/sJbYwEvLPan8dx3eQbKAGcfcO5p/3a HdX/P9/R0Gq7o0uKVOQJ1Aux2TwQDMDIK+08Xv7vQ/dfRSOTwZw5+JCXGezmASeNG+hp8s wO3NMSNRzD521nw8NuRGxKL+bNujY1hn217QVodDWAuXvBVfR6oGe0UkA/OUvT3904fN5F eqdAv8G63wkLk/drXuD2Wn17WmijEOcknmLGMQKNT2nsLHIUl0wjOzSxivDGUQ== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1784679350; 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=P0KtCNeb3S0mgvmpU5RDYaFei1rZhiB9pcxdeDWtrqw=; b=uVs1WzKBkGQ8Pm4whKS4eW5OlpV8hReR4unH4DlMINYPhEskbTKRjSJn7tnQQ2zd+9cvp4 PH296wlReaB+BUwX/nmo3yp/4+tk2KvB9HaKCnFqeLzb9tWR39Tm/XfnU4d4406WSHsWA6 ZIM6+esiJXKypEoH8alN+sKLsW/aEwmgoK2SJknwXDJK2swIZrO9qUeRTNAHwBn7s8j35V XdsW6QXgKZTmR5TsdruP6DDWaFkMuwEKtuc+bEJ3IUa/wgci2wWTMZF4c0P7LIpcrZqnCQ 7YgYGhFYnyBxprGJ7HXqkumAgquD7s/nkdw6gpVNCd/Yte/A6zvWAJpn+ld6Aw== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) by mxrelay.nyi.freebsd.org (Postfix) with ESMTP id 4h4ZXk1stgz19cl for ; Wed, 22 Jul 2026 00:15:50 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from git (uid 1279) (envelope-from git@FreeBSD.org) id 43958 by gitrepo.freebsd.org (DragonFly Mail Agent v0.13+ on gitrepo.freebsd.org); Wed, 22 Jul 2026 00:15:50 +0000 To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Mark Johnston Subject: git: 2efe148a2a32 - main - exec: Avoid overflow when computing the size of the exec map List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-all@freebsd.org Sender: owner-dev-commits-src-all@FreeBSD.org List-Id: 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: markj X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 2efe148a2a321d4c9ed46bdb166f710b2cb21529 Auto-Submitted: auto-generated Date: Wed, 22 Jul 2026 00:15:50 +0000 Message-Id: <6a600bb6.43958.6c552007@gitrepo.freebsd.org> The branch main has been updated by markj: URL: https://cgit.FreeBSD.org/src/commit/?id=2efe148a2a321d4c9ed46bdb166f710b2cb21529 commit 2efe148a2a321d4c9ed46bdb166f710b2cb21529 Author: Mark Johnston AuthorDate: 2026-07-21 22:30:53 +0000 Commit: Mark Johnston CommitDate: 2026-07-22 00:10:04 +0000 exec: Avoid overflow when computing the size of the exec map On a test system with 1024 cores the size of exec map exceeds 4GB, and all of the operands in the size calculation are 32-bit integers. Tested by: Jim Huang Chen MFC after: 1 week Sponsored by: AMD (hardware) --- sys/vm/vm_init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sys/vm/vm_init.c b/sys/vm/vm_init.c index 316b43c1c240..85c425455ddb 100644 --- a/sys/vm/vm_init.c +++ b/sys/vm/vm_init.c @@ -276,7 +276,7 @@ again: exec_map_entry_size = round_page(PATH_MAX + ARG_MAX); exec_map_guard_pages = 1; TUNABLE_INT_FETCH("vm.exec_map_guard_pages", &exec_map_guard_pages); - size = exec_map_entries * + size = (vm_size_t)exec_map_entries * (exec_map_entry_size + 2 * ptoa(exec_map_guard_pages)) + 64 * PAGE_SIZE; kmem_subinit(exec_map, kernel_map, &minaddr, &maxaddr, size, false);