140b0b3f8SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 2692f66f2SHari Bathini /* 3692f66f2SHari Bathini * crash.c - kernel crash support code. 4692f66f2SHari Bathini * Copyright (C) 2002-2004 Eric Biederman <ebiederm@xmission.com> 5692f66f2SHari Bathini */ 6692f66f2SHari Bathini 744e8a5e9SStephen Boyd #include <linux/buildid.h> 8692f66f2SHari Bathini #include <linux/crash_core.h> 971d2bcecSPhilipp Rudo #include <linux/init.h> 10692f66f2SHari Bathini #include <linux/utsname.h> 11692f66f2SHari Bathini #include <linux/vmalloc.h> 1246d36b1bSTao Liu #include <linux/sizes.h> 13692f66f2SHari Bathini 14692f66f2SHari Bathini #include <asm/page.h> 15692f66f2SHari Bathini #include <asm/sections.h> 16692f66f2SHari Bathini 17a24d22b2SEric Biggers #include <crypto/sha1.h> 180935288cSVijay Balakrishna 195fd8fea9SStephen Brennan #include "kallsyms_internal.h" 205fd8fea9SStephen Brennan 21692f66f2SHari Bathini /* vmcoreinfo stuff */ 2223c85094SOmar Sandoval unsigned char *vmcoreinfo_data; 2323c85094SOmar Sandoval size_t vmcoreinfo_size; 24203e9e41SXunlei Pang u32 *vmcoreinfo_note; 25692f66f2SHari Bathini 261229384fSXunlei Pang /* trusted vmcoreinfo, e.g. we can make a copy in the crash memory */ 271229384fSXunlei Pang static unsigned char *vmcoreinfo_data_safecopy; 281229384fSXunlei Pang 29692f66f2SHari Bathini /* 30692f66f2SHari Bathini * parsing the "crashkernel" commandline 31692f66f2SHari Bathini * 32692f66f2SHari Bathini * this code is intended to be called from architecture specific code 33692f66f2SHari Bathini */ 34692f66f2SHari Bathini 35692f66f2SHari Bathini 36692f66f2SHari Bathini /* 37692f66f2SHari Bathini * This function parses command lines in the format 38692f66f2SHari Bathini * 39692f66f2SHari Bathini * crashkernel=ramsize-range:size[,...][@offset] 40692f66f2SHari Bathini * 41692f66f2SHari Bathini * The function returns 0 on success and -EINVAL on failure. 42692f66f2SHari Bathini */ 43692f66f2SHari Bathini static int __init parse_crashkernel_mem(char *cmdline, 44692f66f2SHari Bathini unsigned long long system_ram, 45692f66f2SHari Bathini unsigned long long *crash_size, 46692f66f2SHari Bathini unsigned long long *crash_base) 47692f66f2SHari Bathini { 48692f66f2SHari Bathini char *cur = cmdline, *tmp; 4946d36b1bSTao Liu unsigned long long total_mem = system_ram; 5046d36b1bSTao Liu 5146d36b1bSTao Liu /* 5246d36b1bSTao Liu * Firmware sometimes reserves some memory regions for its own use, 5346d36b1bSTao Liu * so the system memory size is less than the actual physical memory 5446d36b1bSTao Liu * size. Work around this by rounding up the total size to 128M, 5546d36b1bSTao Liu * which is enough for most test cases. 5646d36b1bSTao Liu */ 5746d36b1bSTao Liu total_mem = roundup(total_mem, SZ_128M); 58692f66f2SHari Bathini 59692f66f2SHari Bathini /* for each entry of the comma-separated list */ 60692f66f2SHari Bathini do { 61692f66f2SHari Bathini unsigned long long start, end = ULLONG_MAX, size; 62692f66f2SHari Bathini 63692f66f2SHari Bathini /* get the start of the range */ 64692f66f2SHari Bathini start = memparse(cur, &tmp); 65692f66f2SHari Bathini if (cur == tmp) { 66692f66f2SHari Bathini pr_warn("crashkernel: Memory value expected\n"); 67692f66f2SHari Bathini return -EINVAL; 68692f66f2SHari Bathini } 69692f66f2SHari Bathini cur = tmp; 70692f66f2SHari Bathini if (*cur != '-') { 71692f66f2SHari Bathini pr_warn("crashkernel: '-' expected\n"); 72692f66f2SHari Bathini return -EINVAL; 73692f66f2SHari Bathini } 74692f66f2SHari Bathini cur++; 75692f66f2SHari Bathini 76692f66f2SHari Bathini /* if no ':' is here, than we read the end */ 77692f66f2SHari Bathini if (*cur != ':') { 78692f66f2SHari Bathini end = memparse(cur, &tmp); 79692f66f2SHari Bathini if (cur == tmp) { 80692f66f2SHari Bathini pr_warn("crashkernel: Memory value expected\n"); 81692f66f2SHari Bathini return -EINVAL; 82692f66f2SHari Bathini } 83692f66f2SHari Bathini cur = tmp; 84692f66f2SHari Bathini if (end <= start) { 85692f66f2SHari Bathini pr_warn("crashkernel: end <= start\n"); 86692f66f2SHari Bathini return -EINVAL; 87692f66f2SHari Bathini } 88692f66f2SHari Bathini } 89692f66f2SHari Bathini 90692f66f2SHari Bathini if (*cur != ':') { 91692f66f2SHari Bathini pr_warn("crashkernel: ':' expected\n"); 92692f66f2SHari Bathini return -EINVAL; 93692f66f2SHari Bathini } 94692f66f2SHari Bathini cur++; 95692f66f2SHari Bathini 96692f66f2SHari Bathini size = memparse(cur, &tmp); 97692f66f2SHari Bathini if (cur == tmp) { 98692f66f2SHari Bathini pr_warn("Memory value expected\n"); 99692f66f2SHari Bathini return -EINVAL; 100692f66f2SHari Bathini } 101692f66f2SHari Bathini cur = tmp; 10246d36b1bSTao Liu if (size >= total_mem) { 103692f66f2SHari Bathini pr_warn("crashkernel: invalid size\n"); 104692f66f2SHari Bathini return -EINVAL; 105692f66f2SHari Bathini } 106692f66f2SHari Bathini 107692f66f2SHari Bathini /* match ? */ 10846d36b1bSTao Liu if (total_mem >= start && total_mem < end) { 109692f66f2SHari Bathini *crash_size = size; 110692f66f2SHari Bathini break; 111692f66f2SHari Bathini } 112692f66f2SHari Bathini } while (*cur++ == ','); 113692f66f2SHari Bathini 114692f66f2SHari Bathini if (*crash_size > 0) { 115692f66f2SHari Bathini while (*cur && *cur != ' ' && *cur != '@') 116692f66f2SHari Bathini cur++; 117692f66f2SHari Bathini if (*cur == '@') { 118692f66f2SHari Bathini cur++; 119692f66f2SHari Bathini *crash_base = memparse(cur, &tmp); 120692f66f2SHari Bathini if (cur == tmp) { 121692f66f2SHari Bathini pr_warn("Memory value expected after '@'\n"); 122692f66f2SHari Bathini return -EINVAL; 123692f66f2SHari Bathini } 124692f66f2SHari Bathini } 125de40ccefSDave Young } else 126de40ccefSDave Young pr_info("crashkernel size resulted in zero bytes\n"); 127692f66f2SHari Bathini 128692f66f2SHari Bathini return 0; 129692f66f2SHari Bathini } 130692f66f2SHari Bathini 131692f66f2SHari Bathini /* 132692f66f2SHari Bathini * That function parses "simple" (old) crashkernel command lines like 133692f66f2SHari Bathini * 134692f66f2SHari Bathini * crashkernel=size[@offset] 135692f66f2SHari Bathini * 136692f66f2SHari Bathini * It returns 0 on success and -EINVAL on failure. 137692f66f2SHari Bathini */ 138692f66f2SHari Bathini static int __init parse_crashkernel_simple(char *cmdline, 139692f66f2SHari Bathini unsigned long long *crash_size, 140692f66f2SHari Bathini unsigned long long *crash_base) 141692f66f2SHari Bathini { 142692f66f2SHari Bathini char *cur = cmdline; 143692f66f2SHari Bathini 144692f66f2SHari Bathini *crash_size = memparse(cmdline, &cur); 145692f66f2SHari Bathini if (cmdline == cur) { 146692f66f2SHari Bathini pr_warn("crashkernel: memory value expected\n"); 147692f66f2SHari Bathini return -EINVAL; 148692f66f2SHari Bathini } 149692f66f2SHari Bathini 150692f66f2SHari Bathini if (*cur == '@') 151692f66f2SHari Bathini *crash_base = memparse(cur+1, &cur); 152692f66f2SHari Bathini else if (*cur != ' ' && *cur != '\0') { 153692f66f2SHari Bathini pr_warn("crashkernel: unrecognized char: %c\n", *cur); 154692f66f2SHari Bathini return -EINVAL; 155692f66f2SHari Bathini } 156692f66f2SHari Bathini 157692f66f2SHari Bathini return 0; 158692f66f2SHari Bathini } 159692f66f2SHari Bathini 160692f66f2SHari Bathini #define SUFFIX_HIGH 0 161692f66f2SHari Bathini #define SUFFIX_LOW 1 162692f66f2SHari Bathini #define SUFFIX_NULL 2 163692f66f2SHari Bathini static __initdata char *suffix_tbl[] = { 164692f66f2SHari Bathini [SUFFIX_HIGH] = ",high", 165692f66f2SHari Bathini [SUFFIX_LOW] = ",low", 166692f66f2SHari Bathini [SUFFIX_NULL] = NULL, 167692f66f2SHari Bathini }; 168692f66f2SHari Bathini 169692f66f2SHari Bathini /* 170692f66f2SHari Bathini * That function parses "suffix" crashkernel command lines like 171692f66f2SHari Bathini * 172692f66f2SHari Bathini * crashkernel=size,[high|low] 173692f66f2SHari Bathini * 174692f66f2SHari Bathini * It returns 0 on success and -EINVAL on failure. 175692f66f2SHari Bathini */ 176692f66f2SHari Bathini static int __init parse_crashkernel_suffix(char *cmdline, 177692f66f2SHari Bathini unsigned long long *crash_size, 178692f66f2SHari Bathini const char *suffix) 179692f66f2SHari Bathini { 180692f66f2SHari Bathini char *cur = cmdline; 181692f66f2SHari Bathini 182692f66f2SHari Bathini *crash_size = memparse(cmdline, &cur); 183692f66f2SHari Bathini if (cmdline == cur) { 184692f66f2SHari Bathini pr_warn("crashkernel: memory value expected\n"); 185692f66f2SHari Bathini return -EINVAL; 186692f66f2SHari Bathini } 187692f66f2SHari Bathini 188692f66f2SHari Bathini /* check with suffix */ 189692f66f2SHari Bathini if (strncmp(cur, suffix, strlen(suffix))) { 190692f66f2SHari Bathini pr_warn("crashkernel: unrecognized char: %c\n", *cur); 191692f66f2SHari Bathini return -EINVAL; 192692f66f2SHari Bathini } 193692f66f2SHari Bathini cur += strlen(suffix); 194692f66f2SHari Bathini if (*cur != ' ' && *cur != '\0') { 195692f66f2SHari Bathini pr_warn("crashkernel: unrecognized char: %c\n", *cur); 196692f66f2SHari Bathini return -EINVAL; 197692f66f2SHari Bathini } 198692f66f2SHari Bathini 199692f66f2SHari Bathini return 0; 200692f66f2SHari Bathini } 201692f66f2SHari Bathini 202692f66f2SHari Bathini static __init char *get_last_crashkernel(char *cmdline, 203692f66f2SHari Bathini const char *name, 204692f66f2SHari Bathini const char *suffix) 205692f66f2SHari Bathini { 206692f66f2SHari Bathini char *p = cmdline, *ck_cmdline = NULL; 207692f66f2SHari Bathini 208692f66f2SHari Bathini /* find crashkernel and use the last one if there are more */ 209692f66f2SHari Bathini p = strstr(p, name); 210692f66f2SHari Bathini while (p) { 211692f66f2SHari Bathini char *end_p = strchr(p, ' '); 212692f66f2SHari Bathini char *q; 213692f66f2SHari Bathini 214692f66f2SHari Bathini if (!end_p) 215692f66f2SHari Bathini end_p = p + strlen(p); 216692f66f2SHari Bathini 217692f66f2SHari Bathini if (!suffix) { 218692f66f2SHari Bathini int i; 219692f66f2SHari Bathini 220692f66f2SHari Bathini /* skip the one with any known suffix */ 221692f66f2SHari Bathini for (i = 0; suffix_tbl[i]; i++) { 222692f66f2SHari Bathini q = end_p - strlen(suffix_tbl[i]); 223692f66f2SHari Bathini if (!strncmp(q, suffix_tbl[i], 224692f66f2SHari Bathini strlen(suffix_tbl[i]))) 225692f66f2SHari Bathini goto next; 226692f66f2SHari Bathini } 227692f66f2SHari Bathini ck_cmdline = p; 228692f66f2SHari Bathini } else { 229692f66f2SHari Bathini q = end_p - strlen(suffix); 230692f66f2SHari Bathini if (!strncmp(q, suffix, strlen(suffix))) 231692f66f2SHari Bathini ck_cmdline = p; 232692f66f2SHari Bathini } 233692f66f2SHari Bathini next: 234692f66f2SHari Bathini p = strstr(p+1, name); 235692f66f2SHari Bathini } 236692f66f2SHari Bathini 237692f66f2SHari Bathini return ck_cmdline; 238692f66f2SHari Bathini } 239692f66f2SHari Bathini 240692f66f2SHari Bathini static int __init __parse_crashkernel(char *cmdline, 241692f66f2SHari Bathini unsigned long long system_ram, 242692f66f2SHari Bathini unsigned long long *crash_size, 243692f66f2SHari Bathini unsigned long long *crash_base, 244692f66f2SHari Bathini const char *name, 245692f66f2SHari Bathini const char *suffix) 246692f66f2SHari Bathini { 247692f66f2SHari Bathini char *first_colon, *first_space; 248692f66f2SHari Bathini char *ck_cmdline; 249692f66f2SHari Bathini 250692f66f2SHari Bathini BUG_ON(!crash_size || !crash_base); 251692f66f2SHari Bathini *crash_size = 0; 252692f66f2SHari Bathini *crash_base = 0; 253692f66f2SHari Bathini 254692f66f2SHari Bathini ck_cmdline = get_last_crashkernel(cmdline, name, suffix); 255692f66f2SHari Bathini if (!ck_cmdline) 2562e5920bbSZhen Lei return -ENOENT; 257692f66f2SHari Bathini 258692f66f2SHari Bathini ck_cmdline += strlen(name); 259692f66f2SHari Bathini 260692f66f2SHari Bathini if (suffix) 261692f66f2SHari Bathini return parse_crashkernel_suffix(ck_cmdline, crash_size, 262692f66f2SHari Bathini suffix); 263692f66f2SHari Bathini /* 264692f66f2SHari Bathini * if the commandline contains a ':', then that's the extended 265692f66f2SHari Bathini * syntax -- if not, it must be the classic syntax 266692f66f2SHari Bathini */ 267692f66f2SHari Bathini first_colon = strchr(ck_cmdline, ':'); 268692f66f2SHari Bathini first_space = strchr(ck_cmdline, ' '); 269692f66f2SHari Bathini if (first_colon && (!first_space || first_colon < first_space)) 270692f66f2SHari Bathini return parse_crashkernel_mem(ck_cmdline, system_ram, 271692f66f2SHari Bathini crash_size, crash_base); 272692f66f2SHari Bathini 273692f66f2SHari Bathini return parse_crashkernel_simple(ck_cmdline, crash_size, crash_base); 274692f66f2SHari Bathini } 275692f66f2SHari Bathini 276692f66f2SHari Bathini /* 277692f66f2SHari Bathini * That function is the entry point for command line parsing and should be 278692f66f2SHari Bathini * called from the arch-specific code. 279692f66f2SHari Bathini */ 280692f66f2SHari Bathini int __init parse_crashkernel(char *cmdline, 281692f66f2SHari Bathini unsigned long long system_ram, 282692f66f2SHari Bathini unsigned long long *crash_size, 283692f66f2SHari Bathini unsigned long long *crash_base) 284692f66f2SHari Bathini { 285692f66f2SHari Bathini return __parse_crashkernel(cmdline, system_ram, crash_size, crash_base, 286692f66f2SHari Bathini "crashkernel=", NULL); 287692f66f2SHari Bathini } 288692f66f2SHari Bathini 289692f66f2SHari Bathini int __init parse_crashkernel_high(char *cmdline, 290692f66f2SHari Bathini unsigned long long system_ram, 291692f66f2SHari Bathini unsigned long long *crash_size, 292692f66f2SHari Bathini unsigned long long *crash_base) 293692f66f2SHari Bathini { 294692f66f2SHari Bathini return __parse_crashkernel(cmdline, system_ram, crash_size, crash_base, 295692f66f2SHari Bathini "crashkernel=", suffix_tbl[SUFFIX_HIGH]); 296692f66f2SHari Bathini } 297692f66f2SHari Bathini 298692f66f2SHari Bathini int __init parse_crashkernel_low(char *cmdline, 299692f66f2SHari Bathini unsigned long long system_ram, 300692f66f2SHari Bathini unsigned long long *crash_size, 301692f66f2SHari Bathini unsigned long long *crash_base) 302692f66f2SHari Bathini { 303692f66f2SHari Bathini return __parse_crashkernel(cmdline, system_ram, crash_size, crash_base, 304692f66f2SHari Bathini "crashkernel=", suffix_tbl[SUFFIX_LOW]); 305692f66f2SHari Bathini } 306692f66f2SHari Bathini 30771d2bcecSPhilipp Rudo /* 30871d2bcecSPhilipp Rudo * Add a dummy early_param handler to mark crashkernel= as a known command line 30971d2bcecSPhilipp Rudo * parameter and suppress incorrect warnings in init/main.c. 31071d2bcecSPhilipp Rudo */ 31171d2bcecSPhilipp Rudo static int __init parse_crashkernel_dummy(char *arg) 31271d2bcecSPhilipp Rudo { 31371d2bcecSPhilipp Rudo return 0; 31471d2bcecSPhilipp Rudo } 31571d2bcecSPhilipp Rudo early_param("crashkernel", parse_crashkernel_dummy); 31671d2bcecSPhilipp Rudo 31751dbd925SHari Bathini Elf_Word *append_elf_note(Elf_Word *buf, char *name, unsigned int type, 318692f66f2SHari Bathini void *data, size_t data_len) 319692f66f2SHari Bathini { 32051dbd925SHari Bathini struct elf_note *note = (struct elf_note *)buf; 321692f66f2SHari Bathini 32251dbd925SHari Bathini note->n_namesz = strlen(name) + 1; 32351dbd925SHari Bathini note->n_descsz = data_len; 32451dbd925SHari Bathini note->n_type = type; 32551dbd925SHari Bathini buf += DIV_ROUND_UP(sizeof(*note), sizeof(Elf_Word)); 32651dbd925SHari Bathini memcpy(buf, name, note->n_namesz); 32751dbd925SHari Bathini buf += DIV_ROUND_UP(note->n_namesz, sizeof(Elf_Word)); 32851dbd925SHari Bathini memcpy(buf, data, data_len); 32951dbd925SHari Bathini buf += DIV_ROUND_UP(data_len, sizeof(Elf_Word)); 330692f66f2SHari Bathini 331692f66f2SHari Bathini return buf; 332692f66f2SHari Bathini } 333692f66f2SHari Bathini 33451dbd925SHari Bathini void final_note(Elf_Word *buf) 335692f66f2SHari Bathini { 33651dbd925SHari Bathini memset(buf, 0, sizeof(struct elf_note)); 337692f66f2SHari Bathini } 338692f66f2SHari Bathini 339692f66f2SHari Bathini static void update_vmcoreinfo_note(void) 340692f66f2SHari Bathini { 341692f66f2SHari Bathini u32 *buf = vmcoreinfo_note; 342692f66f2SHari Bathini 343692f66f2SHari Bathini if (!vmcoreinfo_size) 344692f66f2SHari Bathini return; 345692f66f2SHari Bathini buf = append_elf_note(buf, VMCOREINFO_NOTE_NAME, 0, vmcoreinfo_data, 346692f66f2SHari Bathini vmcoreinfo_size); 347692f66f2SHari Bathini final_note(buf); 348692f66f2SHari Bathini } 349692f66f2SHari Bathini 3501229384fSXunlei Pang void crash_update_vmcoreinfo_safecopy(void *ptr) 3511229384fSXunlei Pang { 3521229384fSXunlei Pang if (ptr) 3531229384fSXunlei Pang memcpy(ptr, vmcoreinfo_data, vmcoreinfo_size); 3541229384fSXunlei Pang 3551229384fSXunlei Pang vmcoreinfo_data_safecopy = ptr; 3561229384fSXunlei Pang } 3571229384fSXunlei Pang 358692f66f2SHari Bathini void crash_save_vmcoreinfo(void) 359692f66f2SHari Bathini { 360203e9e41SXunlei Pang if (!vmcoreinfo_note) 361203e9e41SXunlei Pang return; 362203e9e41SXunlei Pang 3631229384fSXunlei Pang /* Use the safe copy to generate vmcoreinfo note if have */ 3641229384fSXunlei Pang if (vmcoreinfo_data_safecopy) 3651229384fSXunlei Pang vmcoreinfo_data = vmcoreinfo_data_safecopy; 3661229384fSXunlei Pang 36791bc9aafSArnd Bergmann vmcoreinfo_append_str("CRASHTIME=%lld\n", ktime_get_real_seconds()); 368692f66f2SHari Bathini update_vmcoreinfo_note(); 369692f66f2SHari Bathini } 370692f66f2SHari Bathini 371692f66f2SHari Bathini void vmcoreinfo_append_str(const char *fmt, ...) 372692f66f2SHari Bathini { 373692f66f2SHari Bathini va_list args; 374692f66f2SHari Bathini char buf[0x50]; 375692f66f2SHari Bathini size_t r; 376692f66f2SHari Bathini 377692f66f2SHari Bathini va_start(args, fmt); 378692f66f2SHari Bathini r = vscnprintf(buf, sizeof(buf), fmt, args); 379692f66f2SHari Bathini va_end(args); 380692f66f2SHari Bathini 3815203f499SXunlei Pang r = min(r, (size_t)VMCOREINFO_BYTES - vmcoreinfo_size); 382692f66f2SHari Bathini 383692f66f2SHari Bathini memcpy(&vmcoreinfo_data[vmcoreinfo_size], buf, r); 384692f66f2SHari Bathini 385692f66f2SHari Bathini vmcoreinfo_size += r; 38608fc35f3SStephen Brennan 38708fc35f3SStephen Brennan WARN_ONCE(vmcoreinfo_size == VMCOREINFO_BYTES, 38808fc35f3SStephen Brennan "vmcoreinfo data exceeds allocated size, truncating"); 389692f66f2SHari Bathini } 390692f66f2SHari Bathini 391692f66f2SHari Bathini /* 392692f66f2SHari Bathini * provide an empty default implementation here -- architecture 393692f66f2SHari Bathini * code may override this 394692f66f2SHari Bathini */ 395692f66f2SHari Bathini void __weak arch_crash_save_vmcoreinfo(void) 396692f66f2SHari Bathini {} 397692f66f2SHari Bathini 398692f66f2SHari Bathini phys_addr_t __weak paddr_vmcoreinfo_note(void) 399692f66f2SHari Bathini { 400203e9e41SXunlei Pang return __pa(vmcoreinfo_note); 401692f66f2SHari Bathini } 40243d4cb47SMarc-André Lureau EXPORT_SYMBOL(paddr_vmcoreinfo_note); 403692f66f2SHari Bathini 404692f66f2SHari Bathini static int __init crash_save_vmcoreinfo_init(void) 405692f66f2SHari Bathini { 406203e9e41SXunlei Pang vmcoreinfo_data = (unsigned char *)get_zeroed_page(GFP_KERNEL); 407203e9e41SXunlei Pang if (!vmcoreinfo_data) { 408203e9e41SXunlei Pang pr_warn("Memory allocation for vmcoreinfo_data failed\n"); 409203e9e41SXunlei Pang return -ENOMEM; 410203e9e41SXunlei Pang } 411203e9e41SXunlei Pang 412203e9e41SXunlei Pang vmcoreinfo_note = alloc_pages_exact(VMCOREINFO_NOTE_SIZE, 413203e9e41SXunlei Pang GFP_KERNEL | __GFP_ZERO); 414203e9e41SXunlei Pang if (!vmcoreinfo_note) { 415203e9e41SXunlei Pang free_page((unsigned long)vmcoreinfo_data); 416203e9e41SXunlei Pang vmcoreinfo_data = NULL; 417203e9e41SXunlei Pang pr_warn("Memory allocation for vmcoreinfo_note failed\n"); 418203e9e41SXunlei Pang return -ENOMEM; 419203e9e41SXunlei Pang } 420203e9e41SXunlei Pang 421692f66f2SHari Bathini VMCOREINFO_OSRELEASE(init_uts_ns.name.release); 42244e8a5e9SStephen Boyd VMCOREINFO_BUILD_ID(); 423692f66f2SHari Bathini VMCOREINFO_PAGESIZE(PAGE_SIZE); 424692f66f2SHari Bathini 425692f66f2SHari Bathini VMCOREINFO_SYMBOL(init_uts_ns); 426ca4a9241SAlexander Egorenkov VMCOREINFO_OFFSET(uts_namespace, name); 427692f66f2SHari Bathini VMCOREINFO_SYMBOL(node_online_map); 428692f66f2SHari Bathini #ifdef CONFIG_MMU 429eff4345eSOmar Sandoval VMCOREINFO_SYMBOL_ARRAY(swapper_pg_dir); 430692f66f2SHari Bathini #endif 431692f66f2SHari Bathini VMCOREINFO_SYMBOL(_stext); 432692f66f2SHari Bathini VMCOREINFO_SYMBOL(vmap_area_list); 433692f66f2SHari Bathini 434a9ee6cf5SMike Rapoport #ifndef CONFIG_NUMA 435692f66f2SHari Bathini VMCOREINFO_SYMBOL(mem_map); 436692f66f2SHari Bathini VMCOREINFO_SYMBOL(contig_page_data); 437692f66f2SHari Bathini #endif 438692f66f2SHari Bathini #ifdef CONFIG_SPARSEMEM 439a0b12803SKirill A. Shutemov VMCOREINFO_SYMBOL_ARRAY(mem_section); 440692f66f2SHari Bathini VMCOREINFO_LENGTH(mem_section, NR_SECTION_ROOTS); 441692f66f2SHari Bathini VMCOREINFO_STRUCT_SIZE(mem_section); 442692f66f2SHari Bathini VMCOREINFO_OFFSET(mem_section, section_mem_map); 4434f5aecdfSPingfan Liu VMCOREINFO_NUMBER(SECTION_SIZE_BITS); 4441d50e5d0SBhupesh Sharma VMCOREINFO_NUMBER(MAX_PHYSMEM_BITS); 445692f66f2SHari Bathini #endif 446692f66f2SHari Bathini VMCOREINFO_STRUCT_SIZE(page); 447692f66f2SHari Bathini VMCOREINFO_STRUCT_SIZE(pglist_data); 448692f66f2SHari Bathini VMCOREINFO_STRUCT_SIZE(zone); 449692f66f2SHari Bathini VMCOREINFO_STRUCT_SIZE(free_area); 450692f66f2SHari Bathini VMCOREINFO_STRUCT_SIZE(list_head); 451692f66f2SHari Bathini VMCOREINFO_SIZE(nodemask_t); 452692f66f2SHari Bathini VMCOREINFO_OFFSET(page, flags); 453692f66f2SHari Bathini VMCOREINFO_OFFSET(page, _refcount); 454692f66f2SHari Bathini VMCOREINFO_OFFSET(page, mapping); 455692f66f2SHari Bathini VMCOREINFO_OFFSET(page, lru); 456692f66f2SHari Bathini VMCOREINFO_OFFSET(page, _mapcount); 457692f66f2SHari Bathini VMCOREINFO_OFFSET(page, private); 458*1c5509beSMatthew Wilcox (Oracle) VMCOREINFO_OFFSET(folio, _folio_dtor); 459*1c5509beSMatthew Wilcox (Oracle) VMCOREINFO_OFFSET(folio, _folio_order); 460692f66f2SHari Bathini VMCOREINFO_OFFSET(page, compound_head); 461692f66f2SHari Bathini VMCOREINFO_OFFSET(pglist_data, node_zones); 462692f66f2SHari Bathini VMCOREINFO_OFFSET(pglist_data, nr_zones); 46343b02ba9SMike Rapoport #ifdef CONFIG_FLATMEM 464692f66f2SHari Bathini VMCOREINFO_OFFSET(pglist_data, node_mem_map); 465692f66f2SHari Bathini #endif 466692f66f2SHari Bathini VMCOREINFO_OFFSET(pglist_data, node_start_pfn); 467692f66f2SHari Bathini VMCOREINFO_OFFSET(pglist_data, node_spanned_pages); 468692f66f2SHari Bathini VMCOREINFO_OFFSET(pglist_data, node_id); 469692f66f2SHari Bathini VMCOREINFO_OFFSET(zone, free_area); 470692f66f2SHari Bathini VMCOREINFO_OFFSET(zone, vm_stat); 471692f66f2SHari Bathini VMCOREINFO_OFFSET(zone, spanned_pages); 472692f66f2SHari Bathini VMCOREINFO_OFFSET(free_area, free_list); 473692f66f2SHari Bathini VMCOREINFO_OFFSET(list_head, next); 474692f66f2SHari Bathini VMCOREINFO_OFFSET(list_head, prev); 475692f66f2SHari Bathini VMCOREINFO_OFFSET(vmap_area, va_start); 476692f66f2SHari Bathini VMCOREINFO_OFFSET(vmap_area, list); 477692f66f2SHari Bathini VMCOREINFO_LENGTH(zone.free_area, MAX_ORDER); 478692f66f2SHari Bathini log_buf_vmcoreinfo_setup(); 479692f66f2SHari Bathini VMCOREINFO_LENGTH(free_area.free_list, MIGRATE_TYPES); 480692f66f2SHari Bathini VMCOREINFO_NUMBER(NR_FREE_PAGES); 481692f66f2SHari Bathini VMCOREINFO_NUMBER(PG_lru); 482692f66f2SHari Bathini VMCOREINFO_NUMBER(PG_private); 483692f66f2SHari Bathini VMCOREINFO_NUMBER(PG_swapcache); 4841cbf29daSPetr Tesarik VMCOREINFO_NUMBER(PG_swapbacked); 485692f66f2SHari Bathini VMCOREINFO_NUMBER(PG_slab); 486692f66f2SHari Bathini #ifdef CONFIG_MEMORY_FAILURE 487692f66f2SHari Bathini VMCOREINFO_NUMBER(PG_hwpoison); 488692f66f2SHari Bathini #endif 489692f66f2SHari Bathini VMCOREINFO_NUMBER(PG_head_mask); 4906e292b9bSMatthew Wilcox #define PAGE_BUDDY_MAPCOUNT_VALUE (~PG_buddy) 491692f66f2SHari Bathini VMCOREINFO_NUMBER(PAGE_BUDDY_MAPCOUNT_VALUE); 492692f66f2SHari Bathini #ifdef CONFIG_HUGETLB_PAGE 493692f66f2SHari Bathini VMCOREINFO_NUMBER(HUGETLB_PAGE_DTOR); 494e04b742fSDavid Hildenbrand #define PAGE_OFFLINE_MAPCOUNT_VALUE (~PG_offline) 495e04b742fSDavid Hildenbrand VMCOREINFO_NUMBER(PAGE_OFFLINE_MAPCOUNT_VALUE); 496692f66f2SHari Bathini #endif 497692f66f2SHari Bathini 4985fd8fea9SStephen Brennan #ifdef CONFIG_KALLSYMS 4995fd8fea9SStephen Brennan VMCOREINFO_SYMBOL(kallsyms_names); 500f09bddbdSStephen Brennan VMCOREINFO_SYMBOL(kallsyms_num_syms); 5015fd8fea9SStephen Brennan VMCOREINFO_SYMBOL(kallsyms_token_table); 5025fd8fea9SStephen Brennan VMCOREINFO_SYMBOL(kallsyms_token_index); 5035fd8fea9SStephen Brennan #ifdef CONFIG_KALLSYMS_BASE_RELATIVE 5045fd8fea9SStephen Brennan VMCOREINFO_SYMBOL(kallsyms_offsets); 5055fd8fea9SStephen Brennan VMCOREINFO_SYMBOL(kallsyms_relative_base); 5065fd8fea9SStephen Brennan #else 5075fd8fea9SStephen Brennan VMCOREINFO_SYMBOL(kallsyms_addresses); 5085fd8fea9SStephen Brennan #endif /* CONFIG_KALLSYMS_BASE_RELATIVE */ 5095fd8fea9SStephen Brennan #endif /* CONFIG_KALLSYMS */ 5105fd8fea9SStephen Brennan 511692f66f2SHari Bathini arch_crash_save_vmcoreinfo(); 512692f66f2SHari Bathini update_vmcoreinfo_note(); 513692f66f2SHari Bathini 514692f66f2SHari Bathini return 0; 515692f66f2SHari Bathini } 516692f66f2SHari Bathini 517692f66f2SHari Bathini subsys_initcall(crash_save_vmcoreinfo_init); 518