The patch titled Subject: of/kexec: refactor ima_get_kexec_buffer() to use ima_validate_range() has been added to the -mm mm-nonmm-unstable branch. Its filename is of-kexec-refactor-ima_get_kexec_buffer-to-use-ima_validate_range.patch
This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches...
This patch will later appear in the mm-nonmm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------ From: Harshit Mogalapalli harshit.m.mogalapalli@oracle.com Subject: of/kexec: refactor ima_get_kexec_buffer() to use ima_validate_range() Date: Mon, 29 Dec 2025 00:15:22 -0800
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/20251229081523.622515-3-harshit.m.mogalapalli@orac... Fixes: b69a2afd5afc ("x86/kexec: Carry forward IMA measurement log on kexec") Signed-off-by: Harshit Mogalapalli harshit.m.mogalapalli@oracle.com Cc: Alexander Graf graf@amazon.com Cc: Ard Biesheuvel ardb@kernel.org Cc: Borislav Betkov bp@alien8.de Cc: guoweikang guoweikang.kernel@gmail.com Cc: Henry Willard henry.willard@oracle.com Cc: "H. Peter Anvin" hpa@zytor.com Cc: Ingo Molnar mingo@redhat.com Cc: Jiri Bohac jbohac@suse.cz Cc: Joel Granados joel.granados@kernel.org Cc: Jonathan McDowell noodles@fb.com Cc: Mike Rapoport rppt@kernel.org Cc: Mimi Zohar zohar@linux.ibm.com Cc: Paul Webb paul.x.webb@oracle.com Cc: Sohil Mehta sohil.mehta@intel.com Cc: Sourabh Jain sourabhjain@linux.ibm.com Cc: Thomas Gleinxer tglx@linutronix.de Cc: Yifei Liu yifei.l.liu@oracle.com Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org ---
drivers/of/kexec.c | 15 +++------------ 1 file changed, 3 insertions(+), 12 deletions(-)
--- a/drivers/of/kexec.c~of-kexec-refactor-ima_get_kexec_buffer-to-use-ima_validate_range +++ a/drivers/of/kexec.c @@ -128,7 +128,6 @@ int __init ima_get_kexec_buffer(void **a { 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 **a 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; _
Patches currently in -mm which might be from harshit.m.mogalapalli@oracle.com are
ima-add-ima_validate_range-for-previous-kernel-ima-buffer.patch of-kexec-refactor-ima_get_kexec_buffer-to-use-ima_validate_range.patch x86-kexec-add-a-sanity-check-on-previous-kernels-ima-kexec-buffer.patch