From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5C4EE376A0C; Wed, 20 May 2026 17:38:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779298702; cv=none; b=snQsZfdrjKWPimvyGtrv/FdeKGqNcGAG6I3MnMqytc/hPLTyXUahWZtfafxdbvjrJj6fbnmadFZ0YdxPxB3KX+8LR/+JJMtlvDJeyZq4yPCuX8TKQ5K8KrO4qO+HG2CXoW/PoxYRiwTDShju7ANgwpo7G+/01sNHixAFwY3Ccyo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779298702; c=relaxed/simple; bh=8WReK9ZGmI/aQk481qPns5xhi6PHarTlYqA5jzSyocQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=DhrbSTU5ckTUdO48qmfBU/aL2714udLB4d64tw2UQz9lJEjYNXucbTrSU4BafBAznrtde7hMVzIxPKouHFfvu1BAx+pzqsB/gTXVdZJ5yHEl87BI56blLpPMxcE2zYDJBeHsC7CHOlUP9fXEHYq059vRIepf79TYFSsIpGYm2LI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Zs2WUAIS; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Zs2WUAIS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AC4F31F000E9; Wed, 20 May 2026 17:38:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1779298701; bh=ZW7dkN0+rEDYlgtuRp7lDj+Jj5dhSQCjGLJOQaXUGg0=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Zs2WUAIS5OdL/wGEMuYHgsZ0s71IX5OaqnMqwCK0mV1QGc4+/Ety/xjh4KoGEKNuh djRpS39PBdRUrQsOoBSopnIXOuXWICmyCTqCir6OPCe5VEPYvgOROmc9OVK2UzCgul 4gqJSbQzrG9mmxLKW90/0ceLOwWxAnd5sX06BKng= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, "Mike Rapoport (Microsoft)" , Sasha Levin Subject: [PATCH 6.18 511/957] memblock: reserve_mem: fix end caclulation in reserve_mem_release_by_name() Date: Wed, 20 May 2026 18:16:34 +0200 Message-ID: <20260520162145.618762034@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260520162134.554764788@linuxfoundation.org> References: <20260520162134.554764788@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Mike Rapoport (Microsoft) [ Upstream commit c12c3e1507809ad1fc0448f51c933f52e17d13cd ] free_reserved_area() expects end parameter to point to the first address after the area, but reserve_mem_release_by_name() passes it the last address inside the area. Remove subtraction of one in calculation of the area end. Fixes: 74e2498ccf7b ("mm/memblock: Add reserved memory release function") Link: https://patch.msgid.link/20260323074836.3653702-2-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) Signed-off-by: Sasha Levin --- mm/memblock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/memblock.c b/mm/memblock.c index f0f2dc66e9a20..757258d68425a 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -2433,7 +2433,7 @@ int reserve_mem_release_by_name(const char *name) return 0; start = phys_to_virt(map->start); - end = start + map->size - 1; + end = start + map->size; snprintf(buf, sizeof(buf), "reserve_mem:%s", name); free_reserved_area(start, end, 0, buf); map->size = 0; -- 2.53.0