From nobody Thu Aug 6 15:01:26 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 4hG9Tm4rjgz6nBJ3 for ; Thu, 06 Aug 2026 15:01:32 +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 4hG9Tl1tgJz3DZR for ; Thu, 06 Aug 2026 15:01:31 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1786028491; 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=diEsg1J89rHFcZq68iWvyE6y5JxUq4pv6FuhQMMgcfQ=; b=GxbQg4NxM2yKwQTmZ5uEkeOujQ54XJ/KXaUaiDqQjGt7xT6JlZJikhslaMWUHHfWQQoDOh S/ELZKLwWt+ELYE0/1GVX5FKzZ4ZNDn2DRvSZpe7x1CITHBNY6KjcUL8KzExOEZLNPIBEZ Bhh2c801AadFRAB9TbKEknjLNYkTA5dpuyREx8ddvVhQD9Me3zWekl+WasWFdzTPTrRubc 7ICE8mKJuXB8cWY+igGL6d+FBw/CpgDEYTGRlTPbR70zXcS9mG+2WPgDjyQdtfrWDFJF7c wwN6iQeru5PvCiROWV5H4KljaynMTDIc4ITJcXCHEXhe44ZdbXrXCqHJRv3VdA== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1786028491; a=rsa-sha256; cv=none; b=KcSoooqQ8hygNqHFzrCglqPfQU9uejPoon9dos2dYVwWep3CtOIJYWIqZxKG4R/axzGazL ARRzqPNf54Ohh7FUSJJ7A/Ux+OetAHLmbqcRJhB79SfFjb/p+B3W/HoWEyRR5dQ2tVup5u km6qDuqDC9k26UrpMpX+ALIYRsgS/4ShiKTuIM2wpZnHR+2mT6WZL3UHHzU5mejmZ8wYzf N2CA5CYyNqf/eK+LMbZb7pGSiWmCKX1ls32AkWyijBbfLuKkR0ddBF0jEa/Co2+8JVfU06 /45EzyTEgn3rMfWfl1C1pkYPtninOT7dK8YuPkoQMjhxYvthudRfht8wdaEAQQ== 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=1786028491; 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=diEsg1J89rHFcZq68iWvyE6y5JxUq4pv6FuhQMMgcfQ=; b=dzguzC9cJm8Ti+Sjykh0oT6w4vv0S4+jzHOkZZjH9T/B0TuPKfJzleo0rW7SUT5DjA92dR 7yyVBtf7AIqDPy6qQe6dQabTfwVAEKV52y8nWzATbvUTislnndN9V5SmF/oRcpkzRGxk16 C4kiRxuh5ppeToEu28F+npD5hTlOspeBvn54i7woez+wTHzmsGl35A6hLoZtPzaysCUM6R jShAxHAQICo7ytehvNp6xgyiRvgO37OELKG995d4CN3veln+XQdG+D1rF5ItoLCeu4aeY6 vsS2lKYzMBQLagZcARbMc+PWKvt8tkzGOSSfE0D9+Wd/tNL5jGTw5SPogFVz3w== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) by mxrelay.nyi.freebsd.org (Postfix) with ESMTP id 4hG9Tl0Q69z9ZP for ; Thu, 06 Aug 2026 15:01:31 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from git (uid 1279) (envelope-from git@FreeBSD.org) id 46255 by gitrepo.freebsd.org (DragonFly Mail Agent v0.13+ on gitrepo.freebsd.org); Thu, 06 Aug 2026 15:01:26 +0000 To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Mark Johnston Subject: git: f1cf1447e56a - stable/15 - 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/stable/15 X-Git-Reftype: branch X-Git-Commit: f1cf1447e56a5998c7e6db1b9668c4da77911be4 Auto-Submitted: auto-generated Date: Thu, 06 Aug 2026 15:01:26 +0000 Message-Id: <6a74a1c6.46255.4ae8cfbc@gitrepo.freebsd.org> The branch stable/15 has been updated by markj: URL: https://cgit.FreeBSD.org/src/commit/?id=f1cf1447e56a5998c7e6db1b9668c4da77911be4 commit f1cf1447e56a5998c7e6db1b9668c4da77911be4 Author: Mark Johnston AuthorDate: 2026-07-21 22:30:53 +0000 Commit: Mark Johnston CommitDate: 2026-08-06 12:52:27 +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) (cherry picked from commit 2efe148a2a321d4c9ed46bdb166f710b2cb21529) --- 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 99eb3b4a57af..d81fab854199 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);