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 8D69577F39 for ; Thu, 21 Dec 2023 22:03:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="AeO/dz6X" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0BA83C433C7; Thu, 21 Dec 2023 22:03:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1703196223; bh=gJkABi0Jo9VQx9KjiipXZezFALxtzxNOFm6rRBWNQAU=; h=Date:To:From:Subject:From; b=AeO/dz6Xv+Xl6XY1fCyPd3gaZ8chVvCdkbz1+CTFqRHKQdEPTMuNdFozJJwdXkLLJ 7/6Mtm3BzLNeahY8eljcHjDBDgpxVFsYG4+ZYm+5j+PxxFcKZd5d6OoReuWLhiT/sW raW0s6GbrCEMAQCmQPCKw77TVebw1DYRtnap3Jgw= Date: Thu, 21 Dec 2023 14:03:42 -0800 To: mm-commits@vger.kernel.org,tglx@linutronix.de,mingo@redhat.com,hpa@zytor.com,horms@kernel.org,dave.hansen@linux.intel.com,bp@alien8.de,bhe@redhat.com,bhelgaas@google.com,ytcoode@gmail.com,akpm@linux-foundation.org From: Andrew Morton Subject: + x86-kexec-fix-incorrect-end-address-passed-to-kernel_ident_mapping_init.patch added to mm-nonmm-unstable branch Message-Id: <20231221220343.0BA83C433C7@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: x86/kexec: fix incorrect end address passed to kernel_ident_mapping_init() has been added to the -mm mm-nonmm-unstable branch. Its filename is x86-kexec-fix-incorrect-end-address-passed-to-kernel_ident_mapping_init.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/x86-kexec-fix-incorrect-end-address-passed-to-kernel_ident_mapping_init.patch This patch will later appear in the mm-nonmm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Yuntao Wang Subject: x86/kexec: fix incorrect end address passed to kernel_ident_mapping_init() Date: Thu, 21 Dec 2023 18:17:02 +0800 kernel_ident_mapping_init() takes an exclusive memory range [pstart, pend) where pend is not included in the range, while res represents an inclusive memory range [start, end] where end is considered part of the range. Therefore, passing res->end directly to kernel_ident_mapping_init() is incorrect, the correct end address should be `res->end + 1`. Link: https://lkml.kernel.org/r/20231221101702.20956-1-ytcoode@gmail.com Signed-off-by: Yuntao Wang Cc: Baoquan He Cc: Bjorn Helgaas Cc: Borislav Petkov (AMD) Cc: Dave Hansen Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: Simon Horman Cc: Thomas Gleixner Signed-off-by: Andrew Morton --- arch/x86/kernel/machine_kexec_64.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/x86/kernel/machine_kexec_64.c~x86-kexec-fix-incorrect-end-address-passed-to-kernel_ident_mapping_init +++ a/arch/x86/kernel/machine_kexec_64.c @@ -44,7 +44,7 @@ static int mem_region_callback(struct re struct init_pgtable_data *data = arg; return kernel_ident_mapping_init(data->info, data->level4p, - res->start, res->end); + res->start, res->end + 1); } static int _ Patches currently in -mm which might be from ytcoode@gmail.com are x86-crash-remove-the-unused-image-parameter-from-prepare_elf_headers.patch x86-crash-use-sz_1m-macro-instead-of-hardcoded-value.patch crash_core-fix-and-simplify-the-logic-of-crash_exclude_mem_range.patch x86-crash-fix-potential-cmem-ranges-array-overflow.patch crash_core-optimize-crash_exclude_mem_range.patch kexec-modify-the-meaning-of-the-end-parameter-in-kimage_is_destination_range.patch kexec_file-fix-incorrect-temp_start-value-in-locate_mem_hole_top_down.patch x86-kexec-use-pr_err-instead-of-kexec_dprintk-when-an-error-occurs.patch x86-kexec-fix-incorrect-argument-passed-to-kexec_dprintk.patch x86-kexec-fix-incorrect-end-address-passed-to-kernel_ident_mapping_init.patch