1 /* 2 * Copyright (c) 2018 Virtuozzo International GmbH 3 * 4 * This work is licensed under the terms of the GNU GPL, version 2 or later. 5 * 6 */ 7 8 #include "qemu/osdep.h" 9 10 #include "err.h" 11 #include "addrspace.h" 12 #include "pe.h" 13 #include "pdb.h" 14 #include "kdbg.h" 15 #include "download.h" 16 #include "qemu/win_dump_defs.h" 17 18 #define SYM_URL_BASE "https://msdl.microsoft.com/download/symbols/" 19 #define PDB_NAME "ntkrnlmp.pdb" 20 #define PE_NAME "ntoskrnl.exe" 21 22 #define INITIAL_MXCSR 0x1f80 23 #define MAX_NUMBER_OF_RUNS 42 24 25 typedef struct idt_desc { 26 uint16_t offset1; /* offset bits 0..15 */ 27 uint16_t selector; 28 uint8_t ist; 29 uint8_t type_attr; 30 uint16_t offset2; /* offset bits 16..31 */ 31 uint32_t offset3; /* offset bits 32..63 */ 32 uint32_t rsrvd; 33 } __attribute__ ((packed)) idt_desc_t; 34 35 static uint64_t idt_desc_addr(idt_desc_t desc) 36 { 37 return (uint64_t)desc.offset1 | ((uint64_t)desc.offset2 << 16) | 38 ((uint64_t)desc.offset3 << 32); 39 } 40 41 static const uint64_t SharedUserData = 0xfffff78000000000; 42 43 #define KUSD_OFFSET_SUITE_MASK 0x2d0 44 #define KUSD_OFFSET_PRODUCT_TYPE 0x264 45 46 #define SYM_RESOLVE(base, r, s) ((s = pdb_resolve(base, r, #s)),\ 47 s ? printf(#s" = 0x%016"PRIx64"\n", s) :\ 48 eprintf("Failed to resolve "#s"\n"), s) 49 50 static uint64_t rol(uint64_t x, uint64_t y) 51 { 52 return (x << y) | (x >> (64 - y)); 53 } 54 55 /* 56 * Decoding algorithm can be found in Volatility project 57 */ 58 static void kdbg_decode(uint64_t *dst, uint64_t *src, size_t size, 59 uint64_t kwn, uint64_t kwa, uint64_t kdbe) 60 { 61 size_t i; 62 assert(size % sizeof(uint64_t) == 0); 63 for (i = 0; i < size / sizeof(uint64_t); i++) { 64 uint64_t block; 65 66 block = src[i]; 67 block = rol(block ^ kwn, (uint8_t)kwn); 68 block = __builtin_bswap64(block ^ kdbe) ^ kwa; 69 dst[i] = block; 70 } 71 } 72 73 static KDDEBUGGER_DATA64 *get_kdbg(uint64_t KernBase, struct pdb_reader *pdb, 74 struct va_space *vs, uint64_t KdDebuggerDataBlock) 75 { 76 const char OwnerTag[4] = "KDBG"; 77 KDDEBUGGER_DATA64 *kdbg = NULL; 78 DBGKD_DEBUG_DATA_HEADER64 kdbg_hdr; 79 bool decode = false; 80 uint64_t kwn, kwa, KdpDataBlockEncoded; 81 82 if (va_space_rw(vs, 83 KdDebuggerDataBlock + offsetof(KDDEBUGGER_DATA64, Header), 84 &kdbg_hdr, sizeof(kdbg_hdr), 0)) { 85 eprintf("Failed to extract KDBG header\n"); 86 return NULL; 87 } 88 89 if (memcmp(&kdbg_hdr.OwnerTag, OwnerTag, sizeof(OwnerTag))) { 90 uint64_t KiWaitNever, KiWaitAlways; 91 92 decode = true; 93 94 if (!SYM_RESOLVE(KernBase, pdb, KiWaitNever) || 95 !SYM_RESOLVE(KernBase, pdb, KiWaitAlways) || 96 !SYM_RESOLVE(KernBase, pdb, KdpDataBlockEncoded)) { 97 return NULL; 98 } 99 100 if (va_space_rw(vs, KiWaitNever, &kwn, sizeof(kwn), 0) || 101 va_space_rw(vs, KiWaitAlways, &kwa, sizeof(kwa), 0)) { 102 return NULL; 103 } 104 105 printf("[KiWaitNever] = 0x%016"PRIx64"\n", kwn); 106 printf("[KiWaitAlways] = 0x%016"PRIx64"\n", kwa); 107 108 /* 109 * If KDBG header can be decoded, KDBG size is available 110 * and entire KDBG can be decoded. 111 */ 112 printf("Decoding KDBG header...\n"); 113 kdbg_decode((uint64_t *)&kdbg_hdr, (uint64_t *)&kdbg_hdr, 114 sizeof(kdbg_hdr), kwn, kwa, KdpDataBlockEncoded); 115 116 printf("Owner tag is \'%.4s\'\n", (char *)&kdbg_hdr.OwnerTag); 117 if (memcmp(&kdbg_hdr.OwnerTag, OwnerTag, sizeof(OwnerTag))) { 118 eprintf("Failed to decode KDBG header\n"); 119 return NULL; 120 } 121 } 122 123 kdbg = g_malloc(kdbg_hdr.Size); 124 125 if (va_space_rw(vs, KdDebuggerDataBlock, kdbg, kdbg_hdr.Size, 0)) { 126 eprintf("Failed to extract entire KDBG\n"); 127 g_free(kdbg); 128 return NULL; 129 } 130 131 if (!decode) { 132 return kdbg; 133 } 134 135 printf("Decoding KdDebuggerDataBlock...\n"); 136 kdbg_decode((uint64_t *)kdbg, (uint64_t *)kdbg, kdbg_hdr.Size, 137 kwn, kwa, KdpDataBlockEncoded); 138 139 va_space_rw(vs, KdDebuggerDataBlock, kdbg, kdbg_hdr.Size, 1); 140 141 return kdbg; 142 } 143 144 static void win_context_init_from_qemu_cpu_state(WinContext64 *ctx, 145 QEMUCPUState *s) 146 { 147 WinContext64 win_ctx = (WinContext64){ 148 .ContextFlags = WIN_CTX_X64 | WIN_CTX_INT | WIN_CTX_SEG | WIN_CTX_CTL, 149 .MxCsr = INITIAL_MXCSR, 150 151 .SegCs = s->cs.selector, 152 .SegSs = s->ss.selector, 153 .SegDs = s->ds.selector, 154 .SegEs = s->es.selector, 155 .SegFs = s->fs.selector, 156 .SegGs = s->gs.selector, 157 .EFlags = (uint32_t)s->rflags, 158 159 .Rax = s->rax, 160 .Rbx = s->rbx, 161 .Rcx = s->rcx, 162 .Rdx = s->rdx, 163 .Rsp = s->rsp, 164 .Rbp = s->rbp, 165 .Rsi = s->rsi, 166 .Rdi = s->rdi, 167 .R8 = s->r8, 168 .R9 = s->r9, 169 .R10 = s->r10, 170 .R11 = s->r11, 171 .R12 = s->r12, 172 .R13 = s->r13, 173 .R14 = s->r14, 174 .R15 = s->r15, 175 176 .Rip = s->rip, 177 .FltSave = { 178 .MxCsr = INITIAL_MXCSR, 179 }, 180 }; 181 182 *ctx = win_ctx; 183 } 184 185 /* 186 * Finds paging-structure hierarchy base, 187 * if previously set doesn't give access to kernel structures 188 */ 189 static int fix_dtb(struct va_space *vs, QEMU_Elf *qe) 190 { 191 /* 192 * Firstly, test previously set DTB. 193 */ 194 if (va_space_resolve(vs, SharedUserData)) { 195 return 0; 196 } 197 198 /* 199 * Secondly, find CPU which run system task. 200 */ 201 size_t i; 202 for (i = 0; i < qe->state_nr; i++) { 203 QEMUCPUState *s = qe->state[i]; 204 205 if (is_system(s)) { 206 va_space_set_dtb(vs, s->cr[3]); 207 printf("DTB 0x%016"PRIx64" has been found from CPU #%zu" 208 " as system task CR3\n", vs->dtb, i); 209 return !(va_space_resolve(vs, SharedUserData)); 210 } 211 } 212 213 /* 214 * Thirdly, use KERNEL_GS_BASE from CPU #0 as PRCB address and 215 * CR3 as [Prcb+0x7000] 216 */ 217 if (qe->has_kernel_gs_base) { 218 QEMUCPUState *s = qe->state[0]; 219 uint64_t Prcb = s->kernel_gs_base; 220 uint64_t *cr3 = va_space_resolve(vs, Prcb + 0x7000); 221 222 if (!cr3) { 223 return 1; 224 } 225 226 va_space_set_dtb(vs, *cr3); 227 printf("DirectoryTableBase = 0x%016"PRIx64" has been found from CPU #0" 228 " as interrupt handling CR3\n", vs->dtb); 229 return !(va_space_resolve(vs, SharedUserData)); 230 } 231 232 return 1; 233 } 234 235 static void try_merge_runs(struct pa_space *ps, 236 WinDumpPhyMemDesc64 *PhysicalMemoryBlock) 237 { 238 unsigned int merge_cnt = 0, run_idx = 0; 239 240 PhysicalMemoryBlock->NumberOfRuns = 0; 241 242 for (size_t idx = 0; idx < ps->block_nr; idx++) { 243 struct pa_block *blk = ps->block + idx; 244 struct pa_block *next = blk + 1; 245 246 PhysicalMemoryBlock->NumberOfPages += blk->size / ELF2DMP_PAGE_SIZE; 247 248 if (idx + 1 != ps->block_nr && blk->paddr + blk->size == next->paddr) { 249 printf("Block #%zu 0x%"PRIx64"+:0x%"PRIx64" and %u previous will be" 250 " merged\n", idx, blk->paddr, blk->size, merge_cnt); 251 merge_cnt++; 252 } else { 253 struct pa_block *first_merged = blk - merge_cnt; 254 255 printf("Block #%zu 0x%"PRIx64"+:0x%"PRIx64" and %u previous will be" 256 " merged to 0x%"PRIx64"+:0x%"PRIx64" (run #%u)\n", 257 idx, blk->paddr, blk->size, merge_cnt, first_merged->paddr, 258 blk->paddr + blk->size - first_merged->paddr, run_idx); 259 PhysicalMemoryBlock->Run[run_idx] = (WinDumpPhyMemRun64) { 260 .BasePage = first_merged->paddr / ELF2DMP_PAGE_SIZE, 261 .PageCount = (blk->paddr + blk->size - first_merged->paddr) / 262 ELF2DMP_PAGE_SIZE, 263 }; 264 PhysicalMemoryBlock->NumberOfRuns++; 265 run_idx++; 266 merge_cnt = 0; 267 } 268 } 269 } 270 271 static int fill_header(WinDumpHeader64 *hdr, struct pa_space *ps, 272 struct va_space *vs, uint64_t KdDebuggerDataBlock, 273 KDDEBUGGER_DATA64 *kdbg, uint64_t KdVersionBlock, int nr_cpus) 274 { 275 uint32_t *suite_mask = va_space_resolve(vs, SharedUserData + 276 KUSD_OFFSET_SUITE_MASK); 277 int32_t *product_type = va_space_resolve(vs, SharedUserData + 278 KUSD_OFFSET_PRODUCT_TYPE); 279 DBGKD_GET_VERSION64 kvb; 280 WinDumpHeader64 h; 281 282 QEMU_BUILD_BUG_ON(KUSD_OFFSET_SUITE_MASK >= ELF2DMP_PAGE_SIZE); 283 QEMU_BUILD_BUG_ON(KUSD_OFFSET_PRODUCT_TYPE >= ELF2DMP_PAGE_SIZE); 284 285 if (!suite_mask || !product_type) { 286 return 1; 287 } 288 289 if (va_space_rw(vs, KdVersionBlock, &kvb, sizeof(kvb), 0)) { 290 eprintf("Failed to extract KdVersionBlock\n"); 291 return 1; 292 } 293 294 h = (WinDumpHeader64) { 295 .Signature = "PAGE", 296 .ValidDump = "DU64", 297 .MajorVersion = kvb.MajorVersion, 298 .MinorVersion = kvb.MinorVersion, 299 .DirectoryTableBase = vs->dtb, 300 .PfnDatabase = kdbg->MmPfnDatabase, 301 .PsLoadedModuleList = kdbg->PsLoadedModuleList, 302 .PsActiveProcessHead = kdbg->PsActiveProcessHead, 303 .MachineImageType = kvb.MachineType, 304 .NumberProcessors = nr_cpus, 305 .BugcheckCode = LIVE_SYSTEM_DUMP, 306 .KdDebuggerDataBlock = KdDebuggerDataBlock, 307 .DumpType = 1, 308 .Comment = "Hello from elf2dmp!", 309 .SuiteMask = *suite_mask, 310 .ProductType = *product_type, 311 .SecondaryDataState = kvb.KdSecondaryVersion, 312 .PhysicalMemoryBlock = (WinDumpPhyMemDesc64) { 313 .NumberOfRuns = ps->block_nr, 314 }, 315 .RequiredDumpSpace = sizeof(h), 316 }; 317 318 if (h.PhysicalMemoryBlock.NumberOfRuns <= MAX_NUMBER_OF_RUNS) { 319 for (size_t idx = 0; idx < ps->block_nr; idx++) { 320 h.PhysicalMemoryBlock.NumberOfPages += 321 ps->block[idx].size / ELF2DMP_PAGE_SIZE; 322 h.PhysicalMemoryBlock.Run[idx] = (WinDumpPhyMemRun64) { 323 .BasePage = ps->block[idx].paddr / ELF2DMP_PAGE_SIZE, 324 .PageCount = ps->block[idx].size / ELF2DMP_PAGE_SIZE, 325 }; 326 } 327 } else { 328 try_merge_runs(ps, &h.PhysicalMemoryBlock); 329 } 330 331 h.RequiredDumpSpace += 332 h.PhysicalMemoryBlock.NumberOfPages << ELF2DMP_PAGE_BITS; 333 334 *hdr = h; 335 336 return 0; 337 } 338 339 static int fill_context(KDDEBUGGER_DATA64 *kdbg, 340 struct va_space *vs, QEMU_Elf *qe) 341 { 342 int i; 343 344 for (i = 0; i < qe->state_nr; i++) { 345 uint64_t Prcb; 346 uint64_t Context; 347 WinContext64 ctx; 348 QEMUCPUState *s = qe->state[i]; 349 350 if (va_space_rw(vs, kdbg->KiProcessorBlock + sizeof(Prcb) * i, 351 &Prcb, sizeof(Prcb), 0)) { 352 eprintf("Failed to read CPU #%d PRCB location\n", i); 353 return 1; 354 } 355 356 if (!Prcb) { 357 eprintf("Context for CPU #%d is missing\n", i); 358 continue; 359 } 360 361 if (va_space_rw(vs, Prcb + kdbg->OffsetPrcbContext, 362 &Context, sizeof(Context), 0)) { 363 eprintf("Failed to read CPU #%d ContextFrame location\n", i); 364 return 1; 365 } 366 367 printf("Filling context for CPU #%d...\n", i); 368 win_context_init_from_qemu_cpu_state(&ctx, s); 369 370 if (va_space_rw(vs, Context, &ctx, sizeof(ctx), 1)) { 371 eprintf("Failed to fill CPU #%d context\n", i); 372 return 1; 373 } 374 } 375 376 return 0; 377 } 378 379 static int pe_get_data_dir_entry(uint64_t base, void *start_addr, int idx, 380 void *entry, size_t size, struct va_space *vs) 381 { 382 const char e_magic[2] = "MZ"; 383 const char Signature[4] = "PE\0\0"; 384 IMAGE_DOS_HEADER *dos_hdr = start_addr; 385 IMAGE_NT_HEADERS64 nt_hdrs; 386 IMAGE_FILE_HEADER *file_hdr = &nt_hdrs.FileHeader; 387 IMAGE_OPTIONAL_HEADER64 *opt_hdr = &nt_hdrs.OptionalHeader; 388 IMAGE_DATA_DIRECTORY *data_dir = nt_hdrs.OptionalHeader.DataDirectory; 389 390 QEMU_BUILD_BUG_ON(sizeof(*dos_hdr) >= ELF2DMP_PAGE_SIZE); 391 392 if (memcmp(&dos_hdr->e_magic, e_magic, sizeof(e_magic))) { 393 return 1; 394 } 395 396 if (va_space_rw(vs, base + dos_hdr->e_lfanew, 397 &nt_hdrs, sizeof(nt_hdrs), 0)) { 398 return 1; 399 } 400 401 if (memcmp(&nt_hdrs.Signature, Signature, sizeof(Signature)) || 402 file_hdr->Machine != 0x8664 || opt_hdr->Magic != 0x020b) { 403 return 1; 404 } 405 406 if (va_space_rw(vs, 407 base + data_dir[idx].VirtualAddress, 408 entry, size, 0)) { 409 return 1; 410 } 411 412 printf("Data directory entry #%d: RVA = 0x%08"PRIx32"\n", idx, 413 (uint32_t)data_dir[idx].VirtualAddress); 414 415 return 0; 416 } 417 418 static int write_dump(struct pa_space *ps, 419 WinDumpHeader64 *hdr, const char *name) 420 { 421 FILE *dmp_file = fopen(name, "wb"); 422 size_t i; 423 424 if (!dmp_file) { 425 eprintf("Failed to open output file \'%s\'\n", name); 426 return 1; 427 } 428 429 printf("Writing header to file...\n"); 430 431 if (fwrite(hdr, sizeof(*hdr), 1, dmp_file) != 1) { 432 eprintf("Failed to write dump header\n"); 433 fclose(dmp_file); 434 return 1; 435 } 436 437 for (i = 0; i < ps->block_nr; i++) { 438 struct pa_block *b = &ps->block[i]; 439 440 printf("Writing block #%zu/%zu of %"PRIu64" bytes to file...\n", i, 441 ps->block_nr, b->size); 442 if (fwrite(b->addr, b->size, 1, dmp_file) != 1) { 443 eprintf("Failed to write block\n"); 444 fclose(dmp_file); 445 return 1; 446 } 447 } 448 449 return fclose(dmp_file); 450 } 451 452 static bool pe_check_pdb_name(uint64_t base, void *start_addr, 453 struct va_space *vs, OMFSignatureRSDS *rsds) 454 { 455 const char sign_rsds[4] = "RSDS"; 456 IMAGE_DEBUG_DIRECTORY debug_dir; 457 char pdb_name[sizeof(PDB_NAME)]; 458 459 if (pe_get_data_dir_entry(base, start_addr, IMAGE_FILE_DEBUG_DIRECTORY, 460 &debug_dir, sizeof(debug_dir), vs)) { 461 eprintf("Failed to get Debug Directory\n"); 462 return false; 463 } 464 465 if (debug_dir.Type != IMAGE_DEBUG_TYPE_CODEVIEW) { 466 eprintf("Debug Directory type is not CodeView\n"); 467 return false; 468 } 469 470 if (va_space_rw(vs, 471 base + debug_dir.AddressOfRawData, 472 rsds, sizeof(*rsds), 0)) { 473 eprintf("Failed to resolve OMFSignatureRSDS\n"); 474 return false; 475 } 476 477 if (memcmp(&rsds->Signature, sign_rsds, sizeof(sign_rsds))) { 478 eprintf("CodeView signature is \'%.4s\', \'%.4s\' expected\n", 479 rsds->Signature, sign_rsds); 480 return false; 481 } 482 483 if (debug_dir.SizeOfData - sizeof(*rsds) != sizeof(PDB_NAME)) { 484 eprintf("PDB name size doesn't match\n"); 485 return false; 486 } 487 488 if (va_space_rw(vs, base + debug_dir.AddressOfRawData + 489 offsetof(OMFSignatureRSDS, name), pdb_name, sizeof(PDB_NAME), 490 0)) { 491 eprintf("Failed to resolve PDB name\n"); 492 return false; 493 } 494 495 printf("PDB name is \'%s\', \'%s\' expected\n", pdb_name, PDB_NAME); 496 497 return !strcmp(pdb_name, PDB_NAME); 498 } 499 500 static void pe_get_pdb_symstore_hash(OMFSignatureRSDS *rsds, char *hash) 501 { 502 sprintf(hash, "%.08x%.04x%.04x%.02x%.02x", rsds->guid.a, rsds->guid.b, 503 rsds->guid.c, rsds->guid.d[0], rsds->guid.d[1]); 504 hash += 20; 505 for (unsigned int i = 0; i < 6; i++, hash += 2) { 506 sprintf(hash, "%.02x", rsds->guid.e[i]); 507 } 508 509 sprintf(hash, "%.01x", rsds->age); 510 } 511 512 int main(int argc, char *argv[]) 513 { 514 int err = 0; 515 QEMU_Elf qemu_elf; 516 struct pa_space ps; 517 struct va_space vs; 518 QEMUCPUState *state; 519 idt_desc_t first_idt_desc; 520 uint64_t KernBase; 521 void *nt_start_addr = NULL; 522 WinDumpHeader64 header; 523 char pdb_hash[34]; 524 char pdb_url[] = SYM_URL_BASE PDB_NAME 525 "/0123456789ABCDEF0123456789ABCDEFx/" PDB_NAME; 526 struct pdb_reader pdb; 527 uint64_t KdDebuggerDataBlock; 528 KDDEBUGGER_DATA64 *kdbg; 529 uint64_t KdVersionBlock; 530 bool kernel_found = false; 531 OMFSignatureRSDS rsds; 532 533 if (argc != 3) { 534 eprintf("usage:\n\t%s elf_file dmp_file\n", argv[0]); 535 return 1; 536 } 537 538 if (QEMU_Elf_init(&qemu_elf, argv[1])) { 539 eprintf("Failed to initialize QEMU ELF dump\n"); 540 return 1; 541 } 542 543 if (pa_space_create(&ps, &qemu_elf)) { 544 eprintf("Failed to initialize physical address space\n"); 545 err = 1; 546 goto out_elf; 547 } 548 549 state = qemu_elf.state[0]; 550 printf("CPU #0 CR3 is 0x%016"PRIx64"\n", state->cr[3]); 551 552 va_space_create(&vs, &ps, state->cr[3]); 553 if (fix_dtb(&vs, &qemu_elf)) { 554 eprintf("Failed to find paging base\n"); 555 err = 1; 556 goto out_elf; 557 } 558 559 printf("CPU #0 IDT is at 0x%016"PRIx64"\n", state->idt.base); 560 561 if (va_space_rw(&vs, state->idt.base, 562 &first_idt_desc, sizeof(first_idt_desc), 0)) { 563 eprintf("Failed to get CPU #0 IDT[0]\n"); 564 err = 1; 565 goto out_ps; 566 } 567 printf("CPU #0 IDT[0] -> 0x%016"PRIx64"\n", idt_desc_addr(first_idt_desc)); 568 569 KernBase = idt_desc_addr(first_idt_desc) & ~(ELF2DMP_PAGE_SIZE - 1); 570 printf("Searching kernel downwards from 0x%016"PRIx64"...\n", KernBase); 571 572 for (; KernBase >= 0xfffff78000000000; KernBase -= ELF2DMP_PAGE_SIZE) { 573 nt_start_addr = va_space_resolve(&vs, KernBase); 574 if (!nt_start_addr) { 575 continue; 576 } 577 578 if (*(uint16_t *)nt_start_addr == 0x5a4d) { /* MZ */ 579 printf("Checking candidate KernBase = 0x%016"PRIx64"\n", KernBase); 580 if (pe_check_pdb_name(KernBase, nt_start_addr, &vs, &rsds)) { 581 kernel_found = true; 582 break; 583 } 584 } 585 } 586 587 if (!kernel_found) { 588 eprintf("Failed to find NT kernel image\n"); 589 err = 1; 590 goto out_ps; 591 } 592 593 printf("KernBase = 0x%016"PRIx64", signature is \'%.2s\'\n", KernBase, 594 (char *)nt_start_addr); 595 596 pe_get_pdb_symstore_hash(&rsds, pdb_hash); 597 598 sprintf(pdb_url, "%s%s/%s/%s", SYM_URL_BASE, PDB_NAME, pdb_hash, PDB_NAME); 599 printf("PDB URL is %s\n", pdb_url); 600 601 if (download_url(PDB_NAME, pdb_url)) { 602 eprintf("Failed to download PDB file\n"); 603 err = 1; 604 goto out_ps; 605 } 606 607 if (pdb_init_from_file(PDB_NAME, &pdb)) { 608 eprintf("Failed to initialize PDB reader\n"); 609 err = 1; 610 goto out_pdb_file; 611 } 612 613 if (!SYM_RESOLVE(KernBase, &pdb, KdDebuggerDataBlock) || 614 !SYM_RESOLVE(KernBase, &pdb, KdVersionBlock)) { 615 err = 1; 616 goto out_pdb; 617 } 618 619 kdbg = get_kdbg(KernBase, &pdb, &vs, KdDebuggerDataBlock); 620 if (!kdbg) { 621 err = 1; 622 goto out_pdb; 623 } 624 625 if (fill_header(&header, &ps, &vs, KdDebuggerDataBlock, kdbg, 626 KdVersionBlock, qemu_elf.state_nr)) { 627 err = 1; 628 goto out_kdbg; 629 } 630 631 if (fill_context(kdbg, &vs, &qemu_elf)) { 632 err = 1; 633 goto out_kdbg; 634 } 635 636 if (write_dump(&ps, &header, argv[2])) { 637 eprintf("Failed to save dump\n"); 638 err = 1; 639 goto out_kdbg; 640 } 641 642 out_kdbg: 643 g_free(kdbg); 644 out_pdb: 645 pdb_exit(&pdb); 646 out_pdb_file: 647 unlink(PDB_NAME); 648 out_ps: 649 pa_space_destroy(&ps); 650 out_elf: 651 QEMU_Elf_exit(&qemu_elf); 652 653 return err; 654 } 655