From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 9A9B536DA04; Sat, 28 Feb 2026 17:57:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772301437; cv=none; b=s3JB0BuJlip+g8djYnjO2kLYS3TaldTEuabu3CDh1i+bwl7J9aIbmYQAf3KmiuIBsftEhc4InauG2PMpPux7d5rMZA54hjry+SZjMyKOmZMpN+o/o2c8XpiAlHbORkhDZ4xCRKN4d2L/eiSt6BflpS6a80zJbAqhRrDdQN/IsuM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772301437; c=relaxed/simple; bh=hynepgpAQS62ggttobeYcs2o4UAKAYMz2B4KjnrM9KM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=cyCJaXvi3bFFRglj3otC8HT13bebQEuEYsH4Q9hm1jUBiXhlNK4G1lXl0MGC6SdjwT+LKA/VgPh0vYvxp94i48fvbQvcNqqaAh24Rh7tSqubDlKlLgeS0rHoJ6LhNivLA7+KvNby0fVzExw7K7gUJm7M3xPVdB6sYJnODfQC2cg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=W87DTvHX; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="W87DTvHX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 57F2BC116D0; Sat, 28 Feb 2026 17:57:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772301437; bh=hynepgpAQS62ggttobeYcs2o4UAKAYMz2B4KjnrM9KM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=W87DTvHXDCDmRExZzNcjNSrnpS26zuUjk41MJRO/udzyC63viDdelVdo1Fv3y73tu WbFtU2/BX7mVWkWqKCUjSbaCB1gNo7/yqV1xiD0MICaugJiqXCiGpIsnRIeytO2mPR SXr+mskO/wq/0EdgZC95tYL8IosqC28deN7EHPHA9oqUbETiK3Q2BB9pOBmxU/QA1E ngmJNsJcd0rwuoqRpa4jZIb6kKM5JB3jCFMvt5ptXPSZKhsc0qlMcAABAK8fOg0MZ+ +49tUGCGxhhNqJ7nH+2jxnHZU63LHjGthSbnCdc4YYHJM6Yh09y7wOyv0FsHegEU+l fCfTcn8jlglIg== From: Sasha Levin To: patches@lists.linux.dev Cc: Harshit Mogalapalli , Mimi Zohar , Alexander Graf , Ard Biesheuvel , Baoquan He , Borislav Betkov , guoweikang , Henry Willard , "H. Peter Anvin" , Ingo Molnar , Jiri Bohac , Joel Granados , Jonathan McDowell , Mike Rapoport , Paul Webb , Sohil Mehta , Sourabh Jain , Thomas Gleinxer , Yifei Liu , stable@vger.kernel.org, Andrew Morton , Sasha Levin Subject: [PATCH 6.18 625/752] of/kexec: refactor ima_get_kexec_buffer() to use ima_validate_range() Date: Sat, 28 Feb 2026 12:45:36 -0500 Message-ID: <20260228174750.1542406-625-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228174750.1542406-1-sashal@kernel.org> References: <20260228174750.1542406-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Harshit Mogalapalli [ Upstream commit 4d02233235ed0450de9c10fcdcf3484e3c9401ce ] Refactor the OF/DT ima_get_kexec_buffer() to use a generic helper to validate the address range. No functional change intended. Link: https://lkml.kernel.org/r/20251231061609.907170-3-harshit.m.mogalapalli@oracle.com Signed-off-by: Harshit Mogalapalli Reviewed-by: Mimi Zohar Cc: Alexander Graf Cc: Ard Biesheuvel Cc: Baoquan He Cc: Borislav Betkov Cc: guoweikang Cc: Henry Willard Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: Jiri Bohac Cc: Joel Granados Cc: Jonathan McDowell Cc: Mike Rapoport Cc: Paul Webb Cc: Sohil Mehta Cc: Sourabh Jain Cc: Thomas Gleinxer Cc: Yifei Liu Cc: Signed-off-by: Andrew Morton Signed-off-by: Sasha Levin --- drivers/of/kexec.c | 15 +++------------ 1 file changed, 3 insertions(+), 12 deletions(-) diff --git a/drivers/of/kexec.c b/drivers/of/kexec.c index 1ee2d31816aeb..c4cf3552c0183 100644 --- a/drivers/of/kexec.c +++ b/drivers/of/kexec.c @@ -128,7 +128,6 @@ int __init ima_get_kexec_buffer(void **addr, size_t *size) { int ret, len; unsigned long tmp_addr; - unsigned long start_pfn, end_pfn; size_t tmp_size; const void *prop; @@ -144,17 +143,9 @@ int __init ima_get_kexec_buffer(void **addr, size_t *size) if (!tmp_size) return -ENOENT; - /* - * Calculate the PFNs for the buffer and ensure - * they are with in addressable memory. - */ - start_pfn = PHYS_PFN(tmp_addr); - end_pfn = PHYS_PFN(tmp_addr + tmp_size - 1); - if (!page_is_ram(start_pfn) || !page_is_ram(end_pfn)) { - pr_warn("IMA buffer at 0x%lx, size = 0x%zx beyond memory\n", - tmp_addr, tmp_size); - return -EINVAL; - } + ret = ima_validate_range(tmp_addr, tmp_size); + if (ret) + return ret; *addr = __va(tmp_addr); *size = tmp_size; -- 2.51.0