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 = malloc(kdbg_hdr.Size); 124 if (!kdbg) { 125 return NULL; 126 } 127 128 if (va_space_rw(vs, KdDebuggerDataBlock, kdbg, kdbg_hdr.Size, 0)) { 129 eprintf("Failed to extract entire KDBG\n"); 130 free(kdbg); 131 return NULL; 132 } 133 134 if (!decode) { 135 return kdbg; 136 } 137 138 printf("Decoding KdDebuggerDataBlock...\n"); 139 kdbg_decode((uint64_t *)kdbg, (uint64_t *)kdbg, kdbg_hdr.Size, 140 kwn, kwa, KdpDataBlockEncoded); 141 142 va_space_rw(vs, KdDebuggerDataBlock, kdbg, kdbg_hdr.Size, 1); 143 144 return kdbg; 145 } 146 147 static void win_context_init_from_qemu_cpu_state(WinContext64 *ctx, 148 QEMUCPUState *s) 149 { 150 WinContext64 win_ctx = (WinContext64){ 151 .ContextFlags = WIN_CTX_X64 | WIN_CTX_INT | WIN_CTX_SEG | WIN_CTX_CTL, 152 .MxCsr = INITIAL_MXCSR, 153 154 .SegCs = s->cs.selector, 155 .SegSs = s->ss.selector, 156 .SegDs = s->ds.selector, 157 .SegEs = s->es.selector, 158 .SegFs = s->fs.selector, 159 .SegGs = s->gs.selector, 160 .EFlags = (uint32_t)s->rflags, 161 162 .Rax = s->rax, 163 .Rbx = s->rbx, 164 .Rcx = s->rcx, 165 .Rdx = s->rdx, 166 .Rsp = s->rsp, 167 .Rbp = s->rbp, 168 .Rsi = s->rsi, 169 .Rdi = s->rdi, 170 .R8 = s->r8, 171 .R9 = s->r9, 172 .R10 = s->r10, 173 .R11 = s->r11, 174 .R12 = s->r12, 175 .R13 = s->r13, 176 .R14 = s->r14, 177 .R15 = s->r15, 178 179 .Rip = s->rip, 180 .FltSave = { 181 .MxCsr = INITIAL_MXCSR, 182 }, 183 }; 184 185 *ctx = win_ctx; 186 } 187 188 /* 189 * Finds paging-structure hierarchy base, 190 * if previously set doesn't give access to kernel structures 191 */ 192 static int fix_dtb(struct va_space *vs, QEMU_Elf *qe) 193 { 194 /* 195 * Firstly, test previously set DTB. 196 */ 197 if (va_space_resolve(vs, SharedUserData)) { 198 return 0; 199 } 200 201 /* 202 * Secondly, find CPU which run system task. 203 */ 204 size_t i; 205 for (i = 0; i < qe->state_nr; i++) { 206 QEMUCPUState *s = qe->state[i]; 207 208 if (is_system(s)) { 209 va_space_set_dtb(vs, s->cr[3]); 210 printf("DTB 0x%016"PRIx64" has been found from CPU #%zu" 211 " as system task CR3\n", vs->dtb, i); 212 return !(va_space_resolve(vs, SharedUserData)); 213 } 214 } 215 216 /* 217 * Thirdly, use KERNEL_GS_BASE from CPU #0 as PRCB address and 218 * CR3 as [Prcb+0x7000] 219 */ 220 if (qe->has_kernel_gs_base) { 221 QEMUCPUState *s = qe->state[0]; 222 uint64_t Prcb = s->kernel_gs_base; 223 uint64_t *cr3 = va_space_resolve(vs, Prcb + 0x7000); 224 225 if (!cr3) { 226 return 1; 227 } 228 229 va_space_set_dtb(vs, *cr3); 230 printf("DirectoryTableBase = 0x%016"PRIx64" has been found from CPU #0" 231 " as interrupt handling CR3\n", vs->dtb); 232 return !(va_space_resolve(vs, SharedUserData)); 233 } 234 235 return 1; 236 } 237 238 static void try_merge_runs(struct pa_space *ps, 239 WinDumpPhyMemDesc64 *PhysicalMemoryBlock) 240 { 241 unsigned int merge_cnt = 0, run_idx = 0; 242 243 PhysicalMemoryBlock->NumberOfRuns = 0; 244 245 for (size_t idx = 0; idx < ps->block_nr; idx++) { 246 struct pa_block *blk = ps->block + idx; 247 struct pa_block *next = blk + 1; 248 249 PhysicalMemoryBlock->NumberOfPages += blk->size / ELF2DMP_PAGE_SIZE; 250 251 if (idx + 1 != ps->block_nr && blk->paddr + blk->size == next->paddr) { 252 printf("Block #%zu 0x%"PRIx64"+:0x%"PRIx64" and %u previous will be" 253 " merged\n", idx, blk->paddr, blk->size, merge_cnt); 254 merge_cnt++; 255 } else { 256 struct pa_block *first_merged = blk - merge_cnt; 257 258 printf("Block #%zu 0x%"PRIx64"+:0x%"PRIx64" and %u previous will be" 259 " merged to 0x%"PRIx64"+:0x%"PRIx64" (run #%u)\n", 260 idx, blk->paddr, blk->size, merge_cnt, first_merged->paddr, 261 blk->paddr + blk->size - first_merged->paddr, run_idx); 262 PhysicalMemoryBlock->Run[run_idx] = (WinDumpPhyMemRun64) { 263 .BasePage = first_merged->paddr / ELF2DMP_PAGE_SIZE, 264 .PageCount = (blk->paddr + blk->size - first_merged->paddr) / 265 ELF2DMP_PAGE_SIZE, 266 }; 267 PhysicalMemoryBlock->NumberOfRuns++; 268 run_idx++; 269 merge_cnt = 0; 270 } 271 } 272 } 273 274 static int fill_header(WinDumpHeader64 *hdr, struct pa_space *ps, 275 struct va_space *vs, uint64_t KdDebuggerDataBlock, 276 KDDEBUGGER_DATA64 *kdbg, uint64_t KdVersionBlock, int nr_cpus) 277 { 278 uint32_t *suite_mask = va_space_resolve(vs, SharedUserData + 279 KUSD_OFFSET_SUITE_MASK); 280 int32_t *product_type = va_space_resolve(vs, SharedUserData + 281 KUSD_OFFSET_PRODUCT_TYPE); 282 DBGKD_GET_VERSION64 kvb; 283 WinDumpHeader64 h; 284 285 QEMU_BUILD_BUG_ON(KUSD_OFFSET_SUITE_MASK >= ELF2DMP_PAGE_SIZE); 286 QEMU_BUILD_BUG_ON(KUSD_OFFSET_PRODUCT_TYPE >= ELF2DMP_PAGE_SIZE); 287 288 if (!suite_mask || !product_type) { 289 return 1; 290 } 291 292 if (va_space_rw(vs, KdVersionBlock, &kvb, sizeof(kvb), 0)) { 293 eprintf("Failed to extract KdVersionBlock\n"); 294 return 1; 295 } 296 297 h = (WinDumpHeader64) { 298 .Signature = "PAGE", 299 .ValidDump = "DU64", 300 .MajorVersion = kvb.MajorVersion, 301 .MinorVersion = kvb.MinorVersion, 302 .DirectoryTableBase = vs->dtb, 303 .PfnDatabase = kdbg->MmPfnDatabase, 304 .PsLoadedModuleList = kdbg->PsLoadedModuleList, 305 .PsActiveProcessHead = kdbg->PsActiveProcessHead, 306 .MachineImageType = kvb.MachineType, 307 .NumberProcessors = nr_cpus, 308 .BugcheckCode = LIVE_SYSTEM_DUMP, 309 .KdDebuggerDataBlock = KdDebuggerDataBlock, 310 .DumpType = 1, 311 .Comment = "Hello from elf2dmp!", 312 .SuiteMask = *suite_mask, 313 .ProductType = *product_type, 314 .SecondaryDataState = kvb.KdSecondaryVersion, 315 .PhysicalMemoryBlock = (WinDumpPhyMemDesc64) { 316 .NumberOfRuns = ps->block_nr, 317 }, 318 .RequiredDumpSpace = sizeof(h), 319 }; 320 321 if (h.PhysicalMemoryBlock.NumberOfRuns <= MAX_NUMBER_OF_RUNS) { 322 for (size_t idx = 0; idx < ps->block_nr; idx++) { 323 h.PhysicalMemoryBlock.NumberOfPages += 324 ps->block[idx].size / ELF2DMP_PAGE_SIZE; 325 h.PhysicalMemoryBlock.Run[idx] = (WinDumpPhyMemRun64) { 326 .BasePage = ps->block[idx].paddr / ELF2DMP_PAGE_SIZE, 327 .PageCount = ps->block[idx].size / ELF2DMP_PAGE_SIZE, 328 }; 329 } 330 } else { 331 try_merge_runs(ps, &h.PhysicalMemoryBlock); 332 } 333 334 h.RequiredDumpSpace += 335 h.PhysicalMemoryBlock.NumberOfPages << ELF2DMP_PAGE_BITS; 336 337 *hdr = h; 338 339 return 0; 340 } 341 342 static int fill_context(KDDEBUGGER_DATA64 *kdbg, 343 struct va_space *vs, QEMU_Elf *qe) 344 { 345 int i; 346 347 for (i = 0; i < qe->state_nr; i++) { 348 uint64_t Prcb; 349 uint64_t Context; 350 WinContext64 ctx; 351 QEMUCPUState *s = qe->state[i]; 352 353 if (va_space_rw(vs, kdbg->KiProcessorBlock + sizeof(Prcb) * i, 354 &Prcb, sizeof(Prcb), 0)) { 355 eprintf("Failed to read CPU #%d PRCB location\n", i); 356 return 1; 357 } 358 359 if (!Prcb) { 360 eprintf("Context for CPU #%d is missing\n", i); 361 continue; 362 } 363 364 if (va_space_rw(vs, Prcb + kdbg->OffsetPrcbContext, 365 &Context, sizeof(Context), 0)) { 366 eprintf("Failed to read CPU #%d ContextFrame location\n", i); 367 return 1; 368 } 369 370 printf("Filling context for CPU #%d...\n", i); 371 win_context_init_from_qemu_cpu_state(&ctx, s); 372 373 if (va_space_rw(vs, Context, &ctx, sizeof(ctx), 1)) { 374 eprintf("Failed to fill CPU #%d context\n", i); 375 return 1; 376 } 377 } 378 379 return 0; 380 } 381 382 static int pe_get_data_dir_entry(uint64_t base, void *start_addr, int idx, 383 void *entry, size_t size, struct va_space *vs) 384 { 385 const char e_magic[2] = "MZ"; 386 const char Signature[4] = "PE\0\0"; 387 IMAGE_DOS_HEADER *dos_hdr = start_addr; 388 IMAGE_NT_HEADERS64 nt_hdrs; 389 IMAGE_FILE_HEADER *file_hdr = &nt_hdrs.FileHeader; 390 IMAGE_OPTIONAL_HEADER64 *opt_hdr = &nt_hdrs.OptionalHeader; 391 IMAGE_DATA_DIRECTORY *data_dir = nt_hdrs.OptionalHeader.DataDirectory; 392 393 QEMU_BUILD_BUG_ON(sizeof(*dos_hdr) >= ELF2DMP_PAGE_SIZE); 394 395 if (memcmp(&dos_hdr->e_magic, e_magic, sizeof(e_magic))) { 396 return 1; 397 } 398 399 if (va_space_rw(vs, base + dos_hdr->e_lfanew, 400 &nt_hdrs, sizeof(nt_hdrs), 0)) { 401 return 1; 402 } 403 404 if (memcmp(&nt_hdrs.Signature, Signature, sizeof(Signature)) || 405 file_hdr->Machine != 0x8664 || opt_hdr->Magic != 0x020b) { 406 return 1; 407 } 408 409 if (va_space_rw(vs, 410 base + data_dir[idx].VirtualAddress, 411 entry, size, 0)) { 412 return 1; 413 } 414 415 printf("Data directory entry #%d: RVA = 0x%08"PRIx32"\n", idx, 416 (uint32_t)data_dir[idx].VirtualAddress); 417 418 return 0; 419 } 420 421 static int write_dump(struct pa_space *ps, 422 WinDumpHeader64 *hdr, const char *name) 423 { 424 FILE *dmp_file = fopen(name, "wb"); 425 size_t i; 426 427 if (!dmp_file) { 428 eprintf("Failed to open output file \'%s\'\n", name); 429 return 1; 430 } 431 432 printf("Writing header to file...\n"); 433 434 if (fwrite(hdr, sizeof(*hdr), 1, dmp_file) != 1) { 435 eprintf("Failed to write dump header\n"); 436 fclose(dmp_file); 437 return 1; 438 } 439 440 for (i = 0; i < ps->block_nr; i++) { 441 struct pa_block *b = &ps->block[i]; 442 443 printf("Writing block #%zu/%zu of %"PRIu64" bytes to file...\n", i, 444 ps->block_nr, b->size); 445 if (fwrite(b->addr, b->size, 1, dmp_file) != 1) { 446 eprintf("Failed to write block\n"); 447 fclose(dmp_file); 448 return 1; 449 } 450 } 451 452 return fclose(dmp_file); 453 } 454 455 static bool pe_check_pdb_name(uint64_t base, void *start_addr, 456 struct va_space *vs, OMFSignatureRSDS *rsds) 457 { 458 const char sign_rsds[4] = "RSDS"; 459 IMAGE_DEBUG_DIRECTORY debug_dir; 460 char pdb_name[sizeof(PDB_NAME)]; 461 462 if (pe_get_data_dir_entry(base, start_addr, IMAGE_FILE_DEBUG_DIRECTORY, 463 &debug_dir, sizeof(debug_dir), vs)) { 464 eprintf("Failed to get Debug Directory\n"); 465 return false; 466 } 467 468 if (debug_dir.Type != IMAGE_DEBUG_TYPE_CODEVIEW) { 469 eprintf("Debug Directory type is not CodeView\n"); 470 return false; 471 } 472 473 if (va_space_rw(vs, 474 base + debug_dir.AddressOfRawData, 475 rsds, sizeof(*rsds), 0)) { 476 eprintf("Failed to resolve OMFSignatureRSDS\n"); 477 return false; 478 } 479 480 if (memcmp(&rsds->Signature, sign_rsds, sizeof(sign_rsds))) { 481 eprintf("CodeView signature is \'%.4s\', \'%s\' expected\n", 482 rsds->Signature, sign_rsds); 483 return false; 484 } 485 486 if (debug_dir.SizeOfData - sizeof(*rsds) != sizeof(PDB_NAME)) { 487 eprintf("PDB name size doesn't match\n"); 488 return false; 489 } 490 491 if (va_space_rw(vs, base + debug_dir.AddressOfRawData + 492 offsetof(OMFSignatureRSDS, name), pdb_name, sizeof(PDB_NAME), 493 0)) { 494 eprintf("Failed to resolve PDB name\n"); 495 return false; 496 } 497 498 printf("PDB name is \'%s\', \'%s\' expected\n", pdb_name, PDB_NAME); 499 500 return !strcmp(pdb_name, PDB_NAME); 501 } 502 503 static void pe_get_pdb_symstore_hash(OMFSignatureRSDS *rsds, char *hash) 504 { 505 sprintf(hash, "%.08x%.04x%.04x%.02x%.02x", rsds->guid.a, rsds->guid.b, 506 rsds->guid.c, rsds->guid.d[0], rsds->guid.d[1]); 507 hash += 20; 508 for (unsigned int i = 0; i < 6; i++, hash += 2) { 509 sprintf(hash, "%.02x", rsds->guid.e[i]); 510 } 511 512 sprintf(hash, "%.01x", rsds->age); 513 } 514 515 int main(int argc, char *argv[]) 516 { 517 int err = 0; 518 QEMU_Elf qemu_elf; 519 struct pa_space ps; 520 struct va_space vs; 521 QEMUCPUState *state; 522 idt_desc_t first_idt_desc; 523 uint64_t KernBase; 524 void *nt_start_addr = NULL; 525 WinDumpHeader64 header; 526 char pdb_hash[34]; 527 char pdb_url[] = SYM_URL_BASE PDB_NAME 528 "/0123456789ABCDEF0123456789ABCDEFx/" PDB_NAME; 529 struct pdb_reader pdb; 530 uint64_t KdDebuggerDataBlock; 531 KDDEBUGGER_DATA64 *kdbg; 532 uint64_t KdVersionBlock; 533 bool kernel_found = false; 534 OMFSignatureRSDS rsds; 535 536 if (argc != 3) { 537 eprintf("usage:\n\t%s elf_file dmp_file\n", argv[0]); 538 return 1; 539 } 540 541 if (QEMU_Elf_init(&qemu_elf, argv[1])) { 542 eprintf("Failed to initialize QEMU ELF dump\n"); 543 return 1; 544 } 545 546 if (pa_space_create(&ps, &qemu_elf)) { 547 eprintf("Failed to initialize physical address space\n"); 548 err = 1; 549 goto out_elf; 550 } 551 552 state = qemu_elf.state[0]; 553 printf("CPU #0 CR3 is 0x%016"PRIx64"\n", state->cr[3]); 554 555 va_space_create(&vs, &ps, state->cr[3]); 556 if (fix_dtb(&vs, &qemu_elf)) { 557 eprintf("Failed to find paging base\n"); 558 err = 1; 559 goto out_elf; 560 } 561 562 printf("CPU #0 IDT is at 0x%016"PRIx64"\n", state->idt.base); 563 564 if (va_space_rw(&vs, state->idt.base, 565 &first_idt_desc, sizeof(first_idt_desc), 0)) { 566 eprintf("Failed to get CPU #0 IDT[0]\n"); 567 err = 1; 568 goto out_ps; 569 } 570 printf("CPU #0 IDT[0] -> 0x%016"PRIx64"\n", idt_desc_addr(first_idt_desc)); 571 572 KernBase = idt_desc_addr(first_idt_desc) & ~(ELF2DMP_PAGE_SIZE - 1); 573 printf("Searching kernel downwards from 0x%016"PRIx64"...\n", KernBase); 574 575 for (; KernBase >= 0xfffff78000000000; KernBase -= ELF2DMP_PAGE_SIZE) { 576 nt_start_addr = va_space_resolve(&vs, KernBase); 577 if (!nt_start_addr) { 578 continue; 579 } 580 581 if (*(uint16_t *)nt_start_addr == 0x5a4d) { /* MZ */ 582 printf("Checking candidate KernBase = 0x%016"PRIx64"\n", KernBase); 583 if (pe_check_pdb_name(KernBase, nt_start_addr, &vs, &rsds)) { 584 kernel_found = true; 585 break; 586 } 587 } 588 } 589 590 if (!kernel_found) { 591 eprintf("Failed to find NT kernel image\n"); 592 err = 1; 593 goto out_ps; 594 } 595 596 printf("KernBase = 0x%016"PRIx64", signature is \'%.2s\'\n", KernBase, 597 (char *)nt_start_addr); 598 599 pe_get_pdb_symstore_hash(&rsds, pdb_hash); 600 601 sprintf(pdb_url, "%s%s/%s/%s", SYM_URL_BASE, PDB_NAME, pdb_hash, PDB_NAME); 602 printf("PDB URL is %s\n", pdb_url); 603 604 if (download_url(PDB_NAME, pdb_url)) { 605 eprintf("Failed to download PDB file\n"); 606 err = 1; 607 goto out_ps; 608 } 609 610 if (pdb_init_from_file(PDB_NAME, &pdb)) { 611 eprintf("Failed to initialize PDB reader\n"); 612 err = 1; 613 goto out_pdb_file; 614 } 615 616 if (!SYM_RESOLVE(KernBase, &pdb, KdDebuggerDataBlock) || 617 !SYM_RESOLVE(KernBase, &pdb, KdVersionBlock)) { 618 err = 1; 619 goto out_pdb; 620 } 621 622 kdbg = get_kdbg(KernBase, &pdb, &vs, KdDebuggerDataBlock); 623 if (!kdbg) { 624 err = 1; 625 goto out_pdb; 626 } 627 628 if (fill_header(&header, &ps, &vs, KdDebuggerDataBlock, kdbg, 629 KdVersionBlock, qemu_elf.state_nr)) { 630 err = 1; 631 goto out_kdbg; 632 } 633 634 if (fill_context(kdbg, &vs, &qemu_elf)) { 635 err = 1; 636 goto out_kdbg; 637 } 638 639 if (write_dump(&ps, &header, argv[2])) { 640 eprintf("Failed to save dump\n"); 641 err = 1; 642 goto out_kdbg; 643 } 644 645 out_kdbg: 646 free(kdbg); 647 out_pdb: 648 pdb_exit(&pdb); 649 out_pdb_file: 650 unlink(PDB_NAME); 651 out_ps: 652 pa_space_destroy(&ps); 653 out_elf: 654 QEMU_Elf_exit(&qemu_elf); 655 656 return err; 657 } 658