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 059E22F0C62; Wed, 20 May 2026 16:53:41 +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=1779296022; cv=none; b=bgdcRIPIcdc7gsvdrnwRtPDix8NCmndBX5tAX5A2Vv4OzwBCRburquZAAaNkd9QoBcO4OsTQlywyq20FoFp3wDt8Alq9l+Ja2liP2t+vpcAmJ2RkSdGWkriS7zP55OXWSPRWW2i3F37rIIfj29f83nS6h4x/Q7QqZ+OQ6wRFDUU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779296022; c=relaxed/simple; bh=wvmQN88uUlW0rDGpKP/iG05QXMQDt7gxsQhUduc7n4Y=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=pnObe295OoO9/dRc9WNhTK8IYAwiDigaa5cOzwNKVDUQvZ1QK0J0uyUM0Z3VYz8nOI0Z3LGtOvAt9fuFbC1wp/faSkEmAvN0ji1TEOnO4VLZVKfCNxAQ3nxQKqv5g+Z61KZkPCKhH3Bha1sQUJjFHLfwsZRrBaDKdbdYKKeE1sk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=0ccdO5sM; 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="0ccdO5sM" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 69BB41F000E9; Wed, 20 May 2026 16:53:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1779296020; bh=Q/vUjfT5GU8Sdc7PJa3erTv9HHIqZC1X0iqRqTBFjBM=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=0ccdO5sM8+IHB0InmhFbbHwrZ8m0Lh7fYM0QFvIOMZVgPHXmv12+loZ7+GVpVgnMZ VVDzVb66s+v4PKn+aqKCPFEhk62+nWQDYhI9ZOThndcTF4Dtx5Ctl7/l8gXN/Csbi5 vqDJHBUa+1CWDuuFNM3Di7mQ8uzY3nFPWB2cM10E= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, "Mike Rapoport (Microsoft)" , Sasha Levin Subject: [PATCH 7.0 0640/1146] memblock: reserve_mem: fix end caclulation in reserve_mem_release_by_name() Date: Wed, 20 May 2026 18:14:50 +0200 Message-ID: <20260520162202.664655882@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260520162148.390695140@linuxfoundation.org> References: <20260520162148.390695140@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 7.0-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 b3ddfdec7a809..d4a02f1750e91 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -2434,7 +2434,7 @@ 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