From: kernel test robot <lkp@intel.com>
To: "Mike Rapoport (Microsoft)" <rppt@kernel.org>
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev
Subject: [rppt:direct-map/v0 4/7] kernel/liveupdate/kexec_handover.c:1074:10: error: call to undeclared function 'get_vm_area_page_order'; ISO C99 and later do not support implicit function declarations
Date: Tue, 07 Jul 2026 07:09:59 +0800 [thread overview]
Message-ID: <202607070710.XxP4FQTx-lkp@intel.com> (raw)
Hi Mike,
FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/rppt/linux.git direct-map/v0
head: 21effbca0418e549e468c2141da5ba1ef83f06fb
commit: 5990078704982cce2dc9a952fb328771a7e7d991 [4/7] mm: split out vmalloc declarations from internal.h
config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20260707/202607070710.XxP4FQTx-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 0a2fb2a2269da0e2a3e230beb6cad39ca314db33)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260707/202607070710.XxP4FQTx-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202607070710.XxP4FQTx-lkp@intel.com/
All errors (new ones prefixed by >>):
>> kernel/liveupdate/kexec_handover.c:1074:10: error: call to undeclared function 'get_vm_area_page_order'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
1074 | order = get_vm_area_page_order(vm);
| ^
kernel/liveupdate/kexec_handover.c:1074:10: note: did you mean 'get_vm_area_caller'?
include/linux/vmalloc.h:247:26: note: 'get_vm_area_caller' declared here
247 | extern struct vm_struct *get_vm_area_caller(unsigned long size,
| ^
>> kernel/liveupdate/kexec_handover.c:1220:2: error: call to undeclared function 'clear_vm_uninitialized_flag'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
1220 | clear_vm_uninitialized_flag(area);
| ^
2 errors generated.
vim +/get_vm_area_page_order +1074 kernel/liveupdate/kexec_handover.c
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1043)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1044) /**
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1045) * kho_preserve_vmalloc - preserve memory allocated with vmalloc() across kexec
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1046) * @ptr: pointer to the area in vmalloc address space
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1047) * @preservation: placeholder for preservation metadata
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1048) *
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1049) * Instructs KHO to preserve the area in vmalloc address space at @ptr. The
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1050) * physical pages mapped at @ptr will be preserved and on successful return
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1051) * @preservation will hold the physical address of a structure that describes
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1052) * the preservation.
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1053) *
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1054) * NOTE: The memory allocated with vmalloc_node() variants cannot be reliably
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1055) * restored on the same node
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1056) *
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1057) * Return: 0 on success, error code on failure
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1058) */
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1059) int kho_preserve_vmalloc(void *ptr, struct kho_vmalloc *preservation)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1060) {
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1061) struct kho_vmalloc_chunk *chunk;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1062) struct vm_struct *vm = find_vm_area(ptr);
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1063) unsigned int order, flags, nr_contig_pages;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1064) unsigned int idx = 0;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1065) int err;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1066)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1067) if (!vm)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1068) return -EINVAL;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1069)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1070) if (vm->flags & ~KHO_VMALLOC_SUPPORTED_FLAGS)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1071) return -EOPNOTSUPP;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1072)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1073) flags = vmalloc_flags_to_kho(vm->flags);
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 @1074) order = get_vm_area_page_order(vm);
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1075)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1076) chunk = new_vmalloc_chunk(NULL);
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1077) if (!chunk)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1078) return -ENOMEM;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1079) KHOSER_STORE_PTR(preservation->first, chunk);
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1080)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1081) nr_contig_pages = (1 << order);
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1082) for (int i = 0; i < vm->nr_pages; i += nr_contig_pages) {
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1083) phys_addr_t phys = page_to_phys(vm->pages[i]);
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1084)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1085) err = kho_preserve_pages(vm->pages[i], nr_contig_pages);
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1086) if (err)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1087) goto err_free;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1088)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1089) chunk->phys[idx++] = phys;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1090) if (idx == ARRAY_SIZE(chunk->phys)) {
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1091) chunk = new_vmalloc_chunk(chunk);
412a32f0e53f4a kernel/liveupdate/kexec_handover.c Andrew Morton 2026-01-21 1092 if (!chunk) {
412a32f0e53f4a kernel/liveupdate/kexec_handover.c Andrew Morton 2026-01-21 1093 err = -ENOMEM;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1094) goto err_free;
412a32f0e53f4a kernel/liveupdate/kexec_handover.c Andrew Morton 2026-01-21 1095 }
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1096) idx = 0;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1097) }
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1098) }
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1099)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1100) preservation->total_pages = vm->nr_pages;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1101) preservation->flags = flags;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1102) preservation->order = order;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1103)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1104) return 0;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1105)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1106) err_free:
de51999e687c70 kernel/liveupdate/kexec_handover.c Pasha Tatashin 2025-11-14 1107 kho_unpreserve_vmalloc(preservation);
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1108) return err;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1109) }
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1110) EXPORT_SYMBOL_GPL(kho_preserve_vmalloc);
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1111)
36f8f7ef7fd2f2 kernel/kexec_handover.c Pasha Tatashin 2025-11-01 1112 /**
36f8f7ef7fd2f2 kernel/kexec_handover.c Pasha Tatashin 2025-11-01 1113 * kho_unpreserve_vmalloc - unpreserve memory allocated with vmalloc()
36f8f7ef7fd2f2 kernel/kexec_handover.c Pasha Tatashin 2025-11-01 1114 * @preservation: preservation metadata returned by kho_preserve_vmalloc()
36f8f7ef7fd2f2 kernel/kexec_handover.c Pasha Tatashin 2025-11-01 1115 *
36f8f7ef7fd2f2 kernel/kexec_handover.c Pasha Tatashin 2025-11-01 1116 * Instructs KHO to unpreserve the area in vmalloc address space that was
36f8f7ef7fd2f2 kernel/kexec_handover.c Pasha Tatashin 2025-11-01 1117 * previously preserved with kho_preserve_vmalloc().
36f8f7ef7fd2f2 kernel/kexec_handover.c Pasha Tatashin 2025-11-01 1118 */
de51999e687c70 kernel/liveupdate/kexec_handover.c Pasha Tatashin 2025-11-14 1119 void kho_unpreserve_vmalloc(struct kho_vmalloc *preservation)
36f8f7ef7fd2f2 kernel/kexec_handover.c Pasha Tatashin 2025-11-01 1120 {
de51999e687c70 kernel/liveupdate/kexec_handover.c Pasha Tatashin 2025-11-14 1121 struct kho_vmalloc_chunk *chunk = KHOSER_LOAD_PTR(preservation->first);
36f8f7ef7fd2f2 kernel/kexec_handover.c Pasha Tatashin 2025-11-01 1122
de51999e687c70 kernel/liveupdate/kexec_handover.c Pasha Tatashin 2025-11-14 1123 while (chunk) {
de51999e687c70 kernel/liveupdate/kexec_handover.c Pasha Tatashin 2025-11-14 1124 struct kho_vmalloc_chunk *tmp = chunk;
36f8f7ef7fd2f2 kernel/kexec_handover.c Pasha Tatashin 2025-11-01 1125
de51999e687c70 kernel/liveupdate/kexec_handover.c Pasha Tatashin 2025-11-14 1126 kho_vmalloc_unpreserve_chunk(chunk, preservation->order);
de51999e687c70 kernel/liveupdate/kexec_handover.c Pasha Tatashin 2025-11-14 1127
de51999e687c70 kernel/liveupdate/kexec_handover.c Pasha Tatashin 2025-11-14 1128 chunk = KHOSER_LOAD_PTR(chunk->hdr.next);
de51999e687c70 kernel/liveupdate/kexec_handover.c Pasha Tatashin 2025-11-14 1129 free_page((unsigned long)tmp);
de51999e687c70 kernel/liveupdate/kexec_handover.c Pasha Tatashin 2025-11-14 1130 }
36f8f7ef7fd2f2 kernel/kexec_handover.c Pasha Tatashin 2025-11-01 1131 }
36f8f7ef7fd2f2 kernel/kexec_handover.c Pasha Tatashin 2025-11-01 1132 EXPORT_SYMBOL_GPL(kho_unpreserve_vmalloc);
36f8f7ef7fd2f2 kernel/kexec_handover.c Pasha Tatashin 2025-11-01 1133
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1134) /**
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1135) * kho_restore_vmalloc - recreates and populates an area in vmalloc address
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1136) * space from the preserved memory.
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1137) * @preservation: preservation metadata.
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1138) *
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1139) * Recreates an area in vmalloc address space and populates it with memory that
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1140) * was preserved using kho_preserve_vmalloc().
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1141) *
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1142) * Return: pointer to the area in the vmalloc address space, NULL on failure.
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1143) */
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1144) void *kho_restore_vmalloc(const struct kho_vmalloc *preservation)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1145) {
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1146) struct kho_vmalloc_chunk *chunk = KHOSER_LOAD_PTR(preservation->first);
019fc36872374d kernel/liveupdate/kexec_handover.c Pasha Tatashin 2026-02-25 1147 kasan_vmalloc_flags_t kasan_flags = KASAN_VMALLOC_PROT_NORMAL;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1148) unsigned int align, order, shift, vm_flags;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1149) unsigned long total_pages, contig_pages;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1150) unsigned long addr, size;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1151) struct vm_struct *area;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1152) struct page **pages;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1153) unsigned int idx = 0;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1154) int err;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1155)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1156) vm_flags = kho_flags_to_vmalloc(preservation->flags);
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1157) if (vm_flags & ~KHO_VMALLOC_SUPPORTED_FLAGS)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1158) return NULL;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1159)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1160) total_pages = preservation->total_pages;
bf4afc53b77aea kernel/liveupdate/kexec_handover.c Linus Torvalds 2026-02-21 1161 pages = kvmalloc_objs(*pages, total_pages);
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1162) if (!pages)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1163) return NULL;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1164) order = preservation->order;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1165) contig_pages = (1 << order);
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1166) shift = PAGE_SHIFT + order;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1167) align = 1 << shift;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1168)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1169) while (chunk) {
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1170) struct page *page;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1171)
0b07092d09e54e kernel/kexec_handover.c Pratyush Yadav 2025-11-03 1172 for (int i = 0; i < ARRAY_SIZE(chunk->phys) && chunk->phys[i]; i++) {
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1173) phys_addr_t phys = chunk->phys[i];
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1174)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1175) if (idx + contig_pages > total_pages)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1176) goto err_free_pages_array;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1177)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1178) page = kho_restore_pages(phys, contig_pages);
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1179) if (!page)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1180) goto err_free_pages_array;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1181)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1182) for (int j = 0; j < contig_pages; j++)
4bc84cd539dff1 kernel/liveupdate/kexec_handover.c Mike Rapoport (Microsoft 2025-11-25 1183) pages[idx++] = page + j;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1184)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1185) phys += contig_pages * PAGE_SIZE;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1186) }
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1187)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1188) page = kho_restore_pages(virt_to_phys(chunk), 1);
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1189) if (!page)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1190) goto err_free_pages_array;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1191) chunk = KHOSER_LOAD_PTR(chunk->hdr.next);
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1192) __free_page(page);
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1193) }
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1194)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1195) if (idx != total_pages)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1196) goto err_free_pages_array;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1197)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1198) area = __get_vm_area_node(total_pages * PAGE_SIZE, align, shift,
019fc36872374d kernel/liveupdate/kexec_handover.c Pasha Tatashin 2026-02-25 1199 vm_flags | VM_UNINITIALIZED,
019fc36872374d kernel/liveupdate/kexec_handover.c Pasha Tatashin 2026-02-25 1200 VMALLOC_START, VMALLOC_END,
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1201) NUMA_NO_NODE, GFP_KERNEL,
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1202) __builtin_return_address(0));
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1203) if (!area)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1204) goto err_free_pages_array;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1205)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1206) addr = (unsigned long)area->addr;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1207) size = get_vm_area_size(area);
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1208) err = vmap_pages_range(addr, addr + size, PAGE_KERNEL, pages, shift);
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1209) if (err)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1210) goto err_free_vm_area;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1211)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1212) area->nr_pages = total_pages;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1213) area->pages = pages;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1214)
019fc36872374d kernel/liveupdate/kexec_handover.c Pasha Tatashin 2026-02-25 1215 if (vm_flags & VM_ALLOC)
019fc36872374d kernel/liveupdate/kexec_handover.c Pasha Tatashin 2026-02-25 1216 kasan_flags |= KASAN_VMALLOC_VM_ALLOC;
019fc36872374d kernel/liveupdate/kexec_handover.c Pasha Tatashin 2026-02-25 1217
019fc36872374d kernel/liveupdate/kexec_handover.c Pasha Tatashin 2026-02-25 1218 area->addr = kasan_unpoison_vmalloc(area->addr, total_pages * PAGE_SIZE,
019fc36872374d kernel/liveupdate/kexec_handover.c Pasha Tatashin 2026-02-25 1219 kasan_flags);
019fc36872374d kernel/liveupdate/kexec_handover.c Pasha Tatashin 2026-02-25 @1220 clear_vm_uninitialized_flag(area);
019fc36872374d kernel/liveupdate/kexec_handover.c Pasha Tatashin 2026-02-25 1221
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1222) return area->addr;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1223)
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1224) err_free_vm_area:
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1225) free_vm_area(area);
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1226) err_free_pages_array:
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1227) kvfree(pages);
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1228) return NULL;
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1229) }
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1230) EXPORT_SYMBOL_GPL(kho_restore_vmalloc);
a667300bd53f27 kernel/kexec_handover.c Mike Rapoport (Microsoft 2025-09-21 1231)
:::::: The code at line 1074 was first introduced by commit
:::::: a667300bd53f272a3055238bcefe108f88836270 kho: add support for preserving vmalloc allocations
:::::: TO: Mike Rapoport (Microsoft) <rppt@kernel.org>
:::::: CC: Andrew Morton <akpm@linux-foundation.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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