From owner-dev-commits-src-branches@freebsd.org Fri Oct 1 00:33:34 2021 Return-Path: Delivered-To: dev-commits-src-branches@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 23F47673937; Fri, 1 Oct 2021 00:33:34 +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 "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4HLB1B0CNPz55L3; Fri, 1 Oct 2021 00:33:34 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (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 did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id D538715D2F; Fri, 1 Oct 2021 00:33:33 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 1910XXgN095970; Fri, 1 Oct 2021 00:33:33 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 1910XXBQ095969; Fri, 1 Oct 2021 00:33:33 GMT (envelope-from git) Date: Fri, 1 Oct 2021 00:33:33 GMT Message-Id: <202110010033.1910XXBQ095969@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Konstantin Belousov Subject: git: deabab2f0719 - stable/13 - malloc_aligned(9): allow zero size and alignment MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: kib X-Git-Repository: src X-Git-Refname: refs/heads/stable/13 X-Git-Reftype: branch X-Git-Commit: deabab2f07190dd6d2a598868696edc790cfce8b Auto-Submitted: auto-generated X-BeenThere: dev-commits-src-branches@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commits to the stable branches of the FreeBSD src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Oct 2021 00:33:34 -0000 The branch stable/13 has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=deabab2f07190dd6d2a598868696edc790cfce8b commit deabab2f07190dd6d2a598868696edc790cfce8b Author: Konstantin Belousov AuthorDate: 2021-09-24 19:38:53 +0000 Commit: Konstantin Belousov CommitDate: 2021-10-01 00:32:23 +0000 malloc_aligned(9): allow zero size and alignment (cherry picked from commit 71d31f1cf6012b143fd676f099430818ae949c3f) --- sys/kern/kern_malloc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/sys/kern/kern_malloc.c b/sys/kern/kern_malloc.c index 364828e6a1e6..0fc4fcbc0539 100644 --- a/sys/kern/kern_malloc.c +++ b/sys/kern/kern_malloc.c @@ -777,7 +777,7 @@ malloc_domainset_aligned(size_t size, size_t align, void *res; size_t asize; - KASSERT(align != 0 && powerof2(align), + KASSERT(powerof2(align), ("malloc_domainset_aligned: wrong align %#zx size %#zx", align, size)); KASSERT(align <= PAGE_SIZE, @@ -792,6 +792,8 @@ malloc_domainset_aligned(size_t size, size_t align, * align, since malloc zones provide alignment equal to their * size. */ + if (size == 0) + size = 1; asize = size <= align ? align : 1UL << flsl(size - 1); res = malloc_domainset(asize, mtp, ds, flags);