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1a52c42e61
rb_profile_frames() is used by profilers in a way such that it can run on any instruction in the binary, and it crashed previously in the following situation in `RUBY_DEBUG` builds: ``` * thread #1, queue = 'com.apple.main-thread', stop reason = step over frame #0: 0x00000001002827f0 miniruby`vm_make_env_each(ec=0x0000000101866b00, cfp=0x000000080c91bee8) at vm.c:992:74 989 } 990 991 vm_make_env_each(ec, prev_cfp); -> 992 VM_FORCE_WRITE_SPECIAL_CONST(&ep[VM_ENV_DATA_INDEX_SPECVAL], VM_GUARDED_PREV_EP(prev_cfp->ep)); 993 } 994 } 995 else { (lldb) call rb_profile_frames(0, 100, $2, $3) /Users/alan/ruby/vm_core.h:1448: Assertion Failed: VM_ENV_FLAGS:FIXNUM_P(flags) ruby 3.5.0dev (2025-09-23T20:20:04Z master 06b7a70837) +PRISM [arm64-darwin25] -- Crash Report log information -------------------------------------------- See Crash Report log file in one of the following locations: * ~/Library/Logs/DiagnosticReports * /Library/Logs/DiagnosticReports for more details. Don't forget to include the above Crash Report log file in bug reports. -- Control frame information ----------------------------------------------- c:0008 p:---- s:0029 e:000028 CFUNC :lambda /Users/alan/ruby/vm_core.h:1448: Assertion Failed: VM_ENV_FLAGS:FIXNUM_P(flags) ruby 3.5.0dev (2025-09-23T20:20:04Z master 06b7a70837) +PRISM [arm64-darwin25] -- Crash Report log information -------------------------------------------- <snip> ``` There is a small window where the control frame is invalid and fails the assert. The double crash also shows that in `RUBY_DEBUG` builds, the crash reporter was previously not resilient to corrupt frame state. In release builds, it prints more info. Add unchecked APIs for the crash reporter and profilers so they work as well in `RUBY_DEBUG` builds as non-debug builds.
1341 lines
45 KiB
C
1341 lines
45 KiB
C
/**********************************************************************
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vm_dump.c -
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$Author$
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Copyright (C) 2004-2007 Koichi Sasada
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**********************************************************************/
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#include "ruby/internal/config.h"
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#include "ruby/fiber/scheduler.h"
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#ifdef HAVE_UCONTEXT_H
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# include <ucontext.h>
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#endif
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#ifdef __APPLE__
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# ifdef HAVE_LIBPROC_H
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# include <libproc.h>
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# endif
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# include <mach/vm_map.h>
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# include <mach/mach_init.h>
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# ifdef __LP64__
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# define vm_region_recurse vm_region_recurse_64
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# endif
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/* that is defined in sys/queue.h, and conflicts with
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* ccan/list/list.h */
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# undef LIST_HEAD
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#endif
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#include "addr2line.h"
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#include "internal.h"
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#include "internal/gc.h"
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#include "internal/variable.h"
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#include "internal/vm.h"
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#include "iseq.h"
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#include "vm_core.h"
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#include "ractor_core.h"
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#define MAX_POSBUF 128
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#define VM_CFP_CNT(ec, cfp) \
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((rb_control_frame_t *)((ec)->vm_stack + (ec)->vm_stack_size) - \
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(rb_control_frame_t *)(cfp))
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const char *rb_method_type_name(rb_method_type_t type);
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int ruby_on_ci;
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#define kprintf(...) if (fprintf(errout, __VA_ARGS__) < 0) goto error
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#define kputs(s) if (fputs(s, errout) < 0) goto error
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static bool
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control_frame_dump(const rb_execution_context_t *ec, const rb_control_frame_t *cfp, FILE *errout)
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{
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ptrdiff_t pc = -1;
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ptrdiff_t ep = cfp->ep - ec->vm_stack;
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char ep_in_heap = ' ';
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char posbuf[MAX_POSBUF+1];
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int line = 0;
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const char *magic, *iseq_name = "-", *selfstr = "-", *biseq_name = "-";
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VALUE tmp;
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const rb_iseq_t *iseq = NULL;
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const rb_callable_method_entry_t *me = rb_vm_frame_method_entry_unchecked(cfp);
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if (ep < 0 || (size_t)ep > ec->vm_stack_size) {
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ep = (ptrdiff_t)cfp->ep;
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ep_in_heap = 'p';
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}
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switch (VM_FRAME_TYPE_UNCHECKED(cfp)) {
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case VM_FRAME_MAGIC_TOP:
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magic = "TOP";
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break;
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case VM_FRAME_MAGIC_METHOD:
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magic = "METHOD";
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break;
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case VM_FRAME_MAGIC_CLASS:
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magic = "CLASS";
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break;
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case VM_FRAME_MAGIC_BLOCK:
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magic = "BLOCK";
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break;
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case VM_FRAME_MAGIC_CFUNC:
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magic = "CFUNC";
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break;
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case VM_FRAME_MAGIC_IFUNC:
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magic = "IFUNC";
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break;
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case VM_FRAME_MAGIC_EVAL:
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magic = "EVAL";
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break;
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case VM_FRAME_MAGIC_RESCUE:
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magic = "RESCUE";
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break;
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case VM_FRAME_MAGIC_DUMMY:
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magic = "DUMMY";
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break;
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case 0:
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magic = "------";
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break;
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default:
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magic = "(none)";
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break;
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}
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if (0) {
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tmp = rb_inspect(cfp->self);
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selfstr = StringValueCStr(tmp);
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}
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else {
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selfstr = "";
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}
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if (cfp->iseq != 0) {
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#define RUBY_VM_IFUNC_P(ptr) IMEMO_TYPE_P(ptr, imemo_ifunc)
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if (RUBY_VM_IFUNC_P(cfp->iseq)) {
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iseq_name = "<ifunc>";
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}
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else if (SYMBOL_P((VALUE)cfp->iseq)) {
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tmp = rb_sym2str((VALUE)cfp->iseq);
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iseq_name = RSTRING_PTR(tmp);
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snprintf(posbuf, MAX_POSBUF, ":%s", iseq_name);
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line = -1;
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}
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else {
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if (cfp->pc) {
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iseq = cfp->iseq;
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pc = cfp->pc - ISEQ_BODY(iseq)->iseq_encoded;
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iseq_name = RSTRING_PTR(ISEQ_BODY(iseq)->location.label);
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if (pc >= 0 && pc <= ISEQ_BODY(iseq)->iseq_size) {
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line = rb_vm_get_sourceline(cfp);
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}
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if (line) {
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snprintf(posbuf, MAX_POSBUF, "%s:%d", RSTRING_PTR(rb_iseq_path(iseq)), line);
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}
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}
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else {
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iseq_name = "<dummy_frame>";
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}
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}
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}
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else if (me != NULL && IMEMO_TYPE_P(me, imemo_ment)) {
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iseq_name = rb_id2name(me->def->original_id);
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snprintf(posbuf, MAX_POSBUF, ":%s", iseq_name);
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line = -1;
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}
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kprintf("c:%04"PRIdPTRDIFF" ",
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((rb_control_frame_t *)(ec->vm_stack + ec->vm_stack_size) - cfp));
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if (pc == -1) {
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kprintf("p:---- ");
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}
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else {
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kprintf("p:%04"PRIdPTRDIFF" ", pc);
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}
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kprintf("s:%04"PRIdPTRDIFF" ", cfp->sp - ec->vm_stack);
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kprintf(ep_in_heap == ' ' ? "e:%06"PRIdPTRDIFF" " : "E:%06"PRIxPTRDIFF" ", ep % 10000);
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kprintf("%-6s", magic);
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if (line) {
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kprintf(" %s", posbuf);
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}
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if (VM_FRAME_FINISHED_P_UNCHECKED(cfp)) {
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kprintf(" [FINISH]");
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}
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if (0) {
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kprintf(" \t");
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kprintf("iseq: %-24s ", iseq_name);
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kprintf("self: %-24s ", selfstr);
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kprintf("%-1s ", biseq_name);
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}
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kprintf("\n");
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// additional information for CI machines
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if (ruby_on_ci) {
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char buff[0x100];
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if (me) {
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if (IMEMO_TYPE_P(me, imemo_ment)) {
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kprintf(" me:\n");
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kprintf(" called_id: %s, type: %s\n", rb_id2name(me->called_id), rb_method_type_name(me->def->type));
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kprintf(" owner class: %s\n", rb_raw_obj_info(buff, 0x100, me->owner));
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if (me->owner != me->defined_class) {
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kprintf(" defined_class: %s\n", rb_raw_obj_info(buff, 0x100, me->defined_class));
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}
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}
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else {
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kprintf(" me is corrupted (%s)\n", rb_raw_obj_info(buff, 0x100, (VALUE)me));
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}
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}
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kprintf(" self: %s\n", rb_raw_obj_info(buff, 0x100, cfp->self));
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if (iseq) {
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if (ISEQ_BODY(iseq)->local_table_size > 0) {
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kprintf(" lvars:\n");
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for (unsigned int i=0; i<ISEQ_BODY(iseq)->local_table_size; i++) {
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const VALUE *argv = cfp->ep - ISEQ_BODY(cfp->iseq)->local_table_size - VM_ENV_DATA_SIZE + 1;
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kprintf(" %s: %s\n",
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rb_id2name(ISEQ_BODY(iseq)->local_table[i]),
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rb_raw_obj_info(buff, 0x100, argv[i]));
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}
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}
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}
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}
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return true;
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error:
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return false;
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}
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bool
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rb_vmdebug_stack_dump_raw(const rb_execution_context_t *ec, const rb_control_frame_t *cfp, FILE *errout)
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{
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#if 0
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VALUE *sp = cfp->sp;
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const VALUE *ep = cfp->ep;
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VALUE *p, *st, *t;
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kprintf("-- stack frame ------------\n");
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for (p = st = ec->vm_stack; p < sp; p++) {
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kprintf("%04ld (%p): %08"PRIxVALUE, (long)(p - st), p, *p);
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t = (VALUE *)*p;
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if (ec->vm_stack <= t && t < sp) {
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kprintf(" (= %ld)", (long)((VALUE *)GC_GUARDED_PTR_REF((VALUE)t) - ec->vm_stack));
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}
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if (p == ep)
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kprintf(" <- ep");
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kprintf("\n");
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}
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#endif
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kprintf("-- Control frame information "
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"-----------------------------------------------\n");
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while ((void *)cfp < (void *)(ec->vm_stack + ec->vm_stack_size)) {
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control_frame_dump(ec, cfp, errout);
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cfp++;
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}
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kprintf("\n");
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return true;
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error:
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return false;
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}
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bool
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rb_vmdebug_stack_dump_raw_current(void)
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{
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const rb_execution_context_t *ec = GET_EC();
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return rb_vmdebug_stack_dump_raw(ec, ec->cfp, stderr);
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}
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bool
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rb_vmdebug_env_dump_raw(const rb_env_t *env, const VALUE *ep, FILE *errout)
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{
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unsigned int i;
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kprintf("-- env --------------------\n");
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while (env) {
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kprintf("--\n");
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for (i = 0; i < env->env_size; i++) {
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kprintf("%04d: %08"PRIxVALUE" (%p)", i, env->env[i], (void *)&env->env[i]);
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if (&env->env[i] == ep) kprintf(" <- ep");
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kprintf("\n");
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}
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env = rb_vm_env_prev_env(env);
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}
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kprintf("---------------------------\n");
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return true;
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error:
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return false;
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}
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bool
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rb_vmdebug_proc_dump_raw(rb_proc_t *proc, FILE *errout)
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{
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const rb_env_t *env;
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char *selfstr;
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VALUE val = rb_inspect(vm_block_self(&proc->block));
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selfstr = StringValueCStr(val);
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kprintf("-- proc -------------------\n");
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kprintf("self: %s\n", selfstr);
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env = VM_ENV_ENVVAL_PTR(vm_block_ep(&proc->block));
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rb_vmdebug_env_dump_raw(env, vm_block_ep(&proc->block), errout);
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return true;
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error:
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return false;
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}
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bool
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rb_vmdebug_stack_dump_th(VALUE thval, FILE *errout)
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{
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rb_thread_t *target_th = rb_thread_ptr(thval);
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return rb_vmdebug_stack_dump_raw(target_th->ec, target_th->ec->cfp, errout);
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}
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#if VMDEBUG > 2
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/* copy from vm_insnhelper.c */
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static const VALUE *
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vm_base_ptr(const rb_control_frame_t *cfp)
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{
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const rb_control_frame_t *prev_cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
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const VALUE *bp = prev_cfp->sp + ISEQ_BODY(cfp->iseq)->local_table_size + VM_ENV_DATA_SIZE;
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if (ISEQ_BODY(cfp->iseq)->type == ISEQ_TYPE_METHOD || VM_FRAME_BMETHOD_P(cfp)) {
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bp += 1;
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}
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return bp;
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}
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static void
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vm_stack_dump_each(const rb_execution_context_t *ec, const rb_control_frame_t *cfp, FILE *errout)
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{
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int i, argc = 0, local_table_size = 0;
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VALUE rstr;
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VALUE *sp = cfp->sp;
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const VALUE *ep = cfp->ep;
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if (VM_FRAME_RUBYFRAME_P(cfp)) {
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const rb_iseq_t *iseq = cfp->iseq;
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argc = ISEQ_BODY(iseq)->param.lead_num;
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local_table_size = ISEQ_BODY(iseq)->local_table_size;
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}
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/* stack trace header */
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if (VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_METHOD||
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VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_TOP ||
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VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_BLOCK ||
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VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_CLASS ||
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VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_CFUNC ||
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VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_IFUNC ||
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VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_EVAL ||
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VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_RESCUE)
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{
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const VALUE *ptr = ep - local_table_size;
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control_frame_dump(ec, cfp, errout);
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for (i = 0; i < argc; i++) {
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rstr = rb_inspect(*ptr);
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kprintf(" arg %2d: %8s (%p)\n", i, StringValueCStr(rstr),
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(void *)ptr++);
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}
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for (; i < local_table_size - 1; i++) {
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rstr = rb_inspect(*ptr);
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kprintf(" local %2d: %8s (%p)\n", i, StringValueCStr(rstr),
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(void *)ptr++);
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}
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ptr = vm_base_ptr(cfp);
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for (; ptr < sp; ptr++, i++) {
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switch (TYPE(*ptr)) {
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case T_UNDEF:
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rstr = rb_str_new2("undef");
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break;
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case T_IMEMO:
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rstr = rb_str_new2("imemo"); /* TODO: can put mode detail information */
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break;
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default:
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rstr = rb_inspect(*ptr);
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break;
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}
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kprintf(" stack %2d: %8s (%"PRIdPTRDIFF")\n", i, StringValueCStr(rstr),
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(ptr - ec->vm_stack));
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}
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}
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else if (VM_FRAME_FINISHED_P(cfp)) {
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if (ec->vm_stack + ec->vm_stack_size > (VALUE *)(cfp + 1)) {
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vm_stack_dump_each(ec, cfp + 1, errout);
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}
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else {
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/* SDR(); */
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}
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}
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else {
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rb_bug("unsupported frame type: %08lx", VM_FRAME_TYPE(cfp));
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}
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}
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#endif
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bool
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rb_vmdebug_debug_print_register(const rb_execution_context_t *ec, FILE *errout)
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{
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rb_control_frame_t *cfp = ec->cfp;
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ptrdiff_t pc = -1;
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ptrdiff_t ep = cfp->ep - ec->vm_stack;
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ptrdiff_t cfpi;
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if (VM_FRAME_RUBYFRAME_P(cfp)) {
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pc = cfp->pc - ISEQ_BODY(cfp->iseq)->iseq_encoded;
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}
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if (ep < 0 || (size_t)ep > ec->vm_stack_size) {
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ep = -1;
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}
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cfpi = ((rb_control_frame_t *)(ec->vm_stack + ec->vm_stack_size)) - cfp;
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kprintf(" [PC] %04"PRIdPTRDIFF", [SP] %04"PRIdPTRDIFF", [EP] %04"PRIdPTRDIFF", [CFP] %04"PRIdPTRDIFF"\n",
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pc, (cfp->sp - ec->vm_stack), ep, cfpi);
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return true;
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error:
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return false;
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}
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bool
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rb_vmdebug_thread_dump_regs(VALUE thval, FILE *errout)
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{
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return rb_vmdebug_debug_print_register(rb_thread_ptr(thval)->ec, errout);
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}
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bool
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rb_vmdebug_debug_print_pre(const rb_execution_context_t *ec, const rb_control_frame_t *cfp, const VALUE *_pc, FILE *errout)
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{
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const rb_iseq_t *iseq = cfp->iseq;
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if (iseq != 0) {
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ptrdiff_t pc = _pc - ISEQ_BODY(iseq)->iseq_encoded;
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int i;
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for (i=0; i<(int)VM_CFP_CNT(ec, cfp); i++) {
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kprintf(" ");
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}
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kprintf("| ");
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if(0) kprintf("[%03ld] ", (long)(cfp->sp - ec->vm_stack));
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/* printf("%3"PRIdPTRDIFF" ", VM_CFP_CNT(ec, cfp)); */
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if (pc >= 0) {
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const VALUE *iseq_original = rb_iseq_original_iseq((rb_iseq_t *)iseq);
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rb_iseq_disasm_insn(0, iseq_original, (size_t)pc, iseq, 0);
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}
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}
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#if VMDEBUG > 3
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kprintf(" (1)");
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rb_vmdebug_debug_print_register(errout, ec);
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|
#endif
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|
return true;
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|
|
error:
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return false;
|
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}
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|
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bool
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rb_vmdebug_debug_print_post(const rb_execution_context_t *ec, const rb_control_frame_t *cfp, FILE *errout)
|
|
{
|
|
#if VMDEBUG > 9
|
|
if (!rb_vmdebug_stack_dump_raw(ec, cfp, errout)) goto errout;
|
|
#endif
|
|
|
|
#if VMDEBUG > 3
|
|
kprintf(" (2)");
|
|
rb_vmdebug_debug_print_register(errout, ec);
|
|
#endif
|
|
/* stack_dump_raw(ec, cfp); */
|
|
|
|
#if VMDEBUG > 2
|
|
/* stack_dump_thobj(ec); */
|
|
vm_stack_dump_each(ec, ec->cfp, errout);
|
|
|
|
kprintf
|
|
("--------------------------------------------------------------\n");
|
|
#endif
|
|
return true;
|
|
|
|
#if VMDEBUG > 2
|
|
error:
|
|
return false;
|
|
#endif
|
|
}
|
|
|
|
VALUE
|
|
rb_vmdebug_thread_dump_state(FILE *errout, VALUE self)
|
|
{
|
|
rb_thread_t *th = rb_thread_ptr(self);
|
|
rb_control_frame_t *cfp = th->ec->cfp;
|
|
|
|
kprintf("Thread state dump:\n");
|
|
kprintf("pc : %p, sp : %p\n", (void *)cfp->pc, (void *)cfp->sp);
|
|
kprintf("cfp: %p, ep : %p\n", (void *)cfp, (void *)cfp->ep);
|
|
|
|
error:
|
|
return Qnil;
|
|
}
|
|
|
|
#if defined __APPLE__
|
|
# include <AvailabilityMacros.h>
|
|
# if defined(MAC_OS_X_VERSION_10_5) && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
|
|
# define MCTX_SS_REG(reg) __ss.__##reg
|
|
# else
|
|
# define MCTX_SS_REG(reg) ss.reg
|
|
# endif
|
|
#endif
|
|
|
|
#if defined(HAVE_BACKTRACE)
|
|
# define USE_BACKTRACE 1
|
|
# ifdef HAVE_LIBUNWIND
|
|
# undef backtrace
|
|
# define backtrace unw_backtrace
|
|
# elif defined(__APPLE__) && defined(HAVE_LIBUNWIND_H) \
|
|
&& defined(MAC_OS_X_VERSION_10_6) && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
|
|
# define UNW_LOCAL_ONLY
|
|
# include <libunwind.h>
|
|
# include <sys/mman.h>
|
|
# undef backtrace
|
|
|
|
# if defined(__arm64__)
|
|
static bool
|
|
is_coroutine_start(unw_word_t ip)
|
|
{
|
|
#if defined(USE_MN_THREADS) && USE_MN_THREADS
|
|
struct coroutine_context;
|
|
extern void ruby_coroutine_start(struct coroutine_context *, struct coroutine_context *);
|
|
return ((void *)(ip) == (void *)ruby_coroutine_start);
|
|
#else
|
|
return false;
|
|
#endif
|
|
}
|
|
# endif
|
|
|
|
int
|
|
backtrace(void **trace, int size)
|
|
{
|
|
unw_cursor_t cursor; unw_context_t uc;
|
|
unw_word_t ip;
|
|
int n = 0;
|
|
|
|
unw_getcontext(&uc);
|
|
unw_init_local(&cursor, &uc);
|
|
# if defined(__x86_64__)
|
|
while (unw_step(&cursor) > 0) {
|
|
unw_get_reg(&cursor, UNW_REG_IP, &ip);
|
|
trace[n++] = (void *)ip;
|
|
{
|
|
char buf[256];
|
|
unw_get_proc_name(&cursor, buf, 256, &ip);
|
|
if (strncmp("_sigtramp", buf, sizeof("_sigtramp")) == 0) {
|
|
goto darwin_sigtramp;
|
|
}
|
|
}
|
|
}
|
|
return n;
|
|
darwin_sigtramp:
|
|
/* darwin's bundled libunwind doesn't support signal trampoline */
|
|
{
|
|
ucontext_t *uctx;
|
|
char vec[1];
|
|
int r;
|
|
/* get previous frame information from %rbx at _sigtramp and set values to cursor
|
|
* https://www.opensource.apple.com/source/Libc/Libc-825.25/i386/sys/_sigtramp.s
|
|
* https://www.opensource.apple.com/source/libunwind/libunwind-35.1/src/unw_getcontext.s
|
|
*/
|
|
unw_get_reg(&cursor, UNW_X86_64_RBX, &ip);
|
|
uctx = (ucontext_t *)ip;
|
|
unw_set_reg(&cursor, UNW_X86_64_RAX, uctx->uc_mcontext->MCTX_SS_REG(rax));
|
|
unw_set_reg(&cursor, UNW_X86_64_RBX, uctx->uc_mcontext->MCTX_SS_REG(rbx));
|
|
unw_set_reg(&cursor, UNW_X86_64_RCX, uctx->uc_mcontext->MCTX_SS_REG(rcx));
|
|
unw_set_reg(&cursor, UNW_X86_64_RDX, uctx->uc_mcontext->MCTX_SS_REG(rdx));
|
|
unw_set_reg(&cursor, UNW_X86_64_RDI, uctx->uc_mcontext->MCTX_SS_REG(rdi));
|
|
unw_set_reg(&cursor, UNW_X86_64_RSI, uctx->uc_mcontext->MCTX_SS_REG(rsi));
|
|
unw_set_reg(&cursor, UNW_X86_64_RBP, uctx->uc_mcontext->MCTX_SS_REG(rbp));
|
|
unw_set_reg(&cursor, UNW_X86_64_RSP, 8+(uctx->uc_mcontext->MCTX_SS_REG(rsp)));
|
|
unw_set_reg(&cursor, UNW_X86_64_R8, uctx->uc_mcontext->MCTX_SS_REG(r8));
|
|
unw_set_reg(&cursor, UNW_X86_64_R9, uctx->uc_mcontext->MCTX_SS_REG(r9));
|
|
unw_set_reg(&cursor, UNW_X86_64_R10, uctx->uc_mcontext->MCTX_SS_REG(r10));
|
|
unw_set_reg(&cursor, UNW_X86_64_R11, uctx->uc_mcontext->MCTX_SS_REG(r11));
|
|
unw_set_reg(&cursor, UNW_X86_64_R12, uctx->uc_mcontext->MCTX_SS_REG(r12));
|
|
unw_set_reg(&cursor, UNW_X86_64_R13, uctx->uc_mcontext->MCTX_SS_REG(r13));
|
|
unw_set_reg(&cursor, UNW_X86_64_R14, uctx->uc_mcontext->MCTX_SS_REG(r14));
|
|
unw_set_reg(&cursor, UNW_X86_64_R15, uctx->uc_mcontext->MCTX_SS_REG(r15));
|
|
ip = uctx->uc_mcontext->MCTX_SS_REG(rip);
|
|
|
|
/* There are 4 cases for SEGV:
|
|
* (1) called invalid address
|
|
* (2) read or write invalid address
|
|
* (3) received signal
|
|
*
|
|
* Detail:
|
|
* (1) called invalid address
|
|
* In this case, saved ip is invalid address.
|
|
* It needs to just save the address for the information,
|
|
* skip the frame, and restore the frame calling the
|
|
* invalid address from %rsp.
|
|
* The problem is how to check whether the ip is valid or not.
|
|
* This code uses mincore(2) and assume the address's page is
|
|
* incore/referenced or not reflects the problem.
|
|
* Note that High Sierra's mincore(2) may return -128.
|
|
* (2) read or write invalid address
|
|
* saved ip is valid. just restart backtracing.
|
|
* (3) received signal in user space
|
|
* Same as (2).
|
|
* (4) received signal in kernel
|
|
* In this case saved ip points just after syscall, but registers are
|
|
* already overwritten by kernel. To fix register consistency,
|
|
* skip libc's kernel wrapper.
|
|
* To detect this case, just previous two bytes of ip is "\x0f\x05",
|
|
* syscall instruction of x86_64.
|
|
*/
|
|
r = mincore((const void *)ip, 1, vec);
|
|
if (r || vec[0] <= 0 || memcmp((const char *)ip-2, "\x0f\x05", 2) == 0) {
|
|
/* if segv is caused by invalid call or signal received in syscall */
|
|
/* the frame is invalid; skip */
|
|
trace[n++] = (void *)ip;
|
|
ip = *(unw_word_t*)uctx->uc_mcontext->MCTX_SS_REG(rsp);
|
|
}
|
|
|
|
trace[n++] = (void *)ip;
|
|
unw_set_reg(&cursor, UNW_REG_IP, ip);
|
|
}
|
|
while (unw_step(&cursor) > 0) {
|
|
unw_get_reg(&cursor, UNW_REG_IP, &ip);
|
|
trace[n++] = (void *)ip;
|
|
}
|
|
return n;
|
|
|
|
# elif defined(__arm64__)
|
|
/* Since Darwin arm64's _sigtramp is implemented as normal function,
|
|
* unwind can unwind frames without special code.
|
|
* https://github.com/apple/darwin-libplatform/blob/215b09856ab5765b7462a91be7076183076600df/src/setjmp/generic/sigtramp.c
|
|
*/
|
|
while (unw_step(&cursor) > 0) {
|
|
unw_get_reg(&cursor, UNW_REG_IP, &ip);
|
|
// Strip Arm64's pointer authentication.
|
|
// https://developer.apple.com/documentation/security/preparing_your_app_to_work_with_pointer_authentication
|
|
// I wish I could use "ptrauth_strip()" but I get an error:
|
|
// "this target does not support pointer authentication"
|
|
trace[n++] = (void *)(ip & 0x7fffffffffffull);
|
|
|
|
// Apple's libunwind can't handle our coroutine switching code
|
|
if (is_coroutine_start(ip)) break;
|
|
}
|
|
return n;
|
|
# else
|
|
# error unsupported architecture
|
|
# endif
|
|
}
|
|
# elif defined(BROKEN_BACKTRACE)
|
|
# undef USE_BACKTRACE
|
|
# define USE_BACKTRACE 0
|
|
# endif
|
|
#else
|
|
# define USE_BACKTRACE 0
|
|
#endif
|
|
|
|
#if USE_BACKTRACE
|
|
# include <execinfo.h>
|
|
#elif defined(_WIN32)
|
|
# include <imagehlp.h>
|
|
# ifndef SYMOPT_DEBUG
|
|
# define SYMOPT_DEBUG 0x80000000
|
|
# endif
|
|
# ifndef MAX_SYM_NAME
|
|
# define MAX_SYM_NAME 2000
|
|
typedef struct {
|
|
DWORD64 Offset;
|
|
WORD Segment;
|
|
ADDRESS_MODE Mode;
|
|
} ADDRESS64;
|
|
typedef struct {
|
|
DWORD64 Thread;
|
|
DWORD ThCallbackStack;
|
|
DWORD ThCallbackBStore;
|
|
DWORD NextCallback;
|
|
DWORD FramePointer;
|
|
DWORD64 KiCallUserMode;
|
|
DWORD64 KeUserCallbackDispatcher;
|
|
DWORD64 SystemRangeStart;
|
|
DWORD64 KiUserExceptionDispatcher;
|
|
DWORD64 StackBase;
|
|
DWORD64 StackLimit;
|
|
DWORD64 Reserved[5];
|
|
} KDHELP64;
|
|
typedef struct {
|
|
ADDRESS64 AddrPC;
|
|
ADDRESS64 AddrReturn;
|
|
ADDRESS64 AddrFrame;
|
|
ADDRESS64 AddrStack;
|
|
ADDRESS64 AddrBStore;
|
|
void *FuncTableEntry;
|
|
DWORD64 Params[4];
|
|
BOOL Far;
|
|
BOOL Virtual;
|
|
DWORD64 Reserved[3];
|
|
KDHELP64 KdHelp;
|
|
} STACKFRAME64;
|
|
typedef struct {
|
|
ULONG SizeOfStruct;
|
|
ULONG TypeIndex;
|
|
ULONG64 Reserved[2];
|
|
ULONG Index;
|
|
ULONG Size;
|
|
ULONG64 ModBase;
|
|
ULONG Flags;
|
|
ULONG64 Value;
|
|
ULONG64 Address;
|
|
ULONG Register;
|
|
ULONG Scope;
|
|
ULONG Tag;
|
|
ULONG NameLen;
|
|
ULONG MaxNameLen;
|
|
char Name[1];
|
|
} SYMBOL_INFO;
|
|
typedef struct {
|
|
DWORD SizeOfStruct;
|
|
void *Key;
|
|
DWORD LineNumber;
|
|
char *FileName;
|
|
DWORD64 Address;
|
|
} IMAGEHLP_LINE64;
|
|
typedef void *PREAD_PROCESS_MEMORY_ROUTINE64;
|
|
typedef void *PFUNCTION_TABLE_ACCESS_ROUTINE64;
|
|
typedef void *PGET_MODULE_BASE_ROUTINE64;
|
|
typedef void *PTRANSLATE_ADDRESS_ROUTINE64;
|
|
# endif
|
|
|
|
struct dump_thead_arg {
|
|
DWORD tid;
|
|
FILE *errout;
|
|
};
|
|
|
|
static void
|
|
dump_thread(void *arg)
|
|
{
|
|
HANDLE dbghelp;
|
|
BOOL (WINAPI *pSymInitialize)(HANDLE, const char *, BOOL);
|
|
BOOL (WINAPI *pSymCleanup)(HANDLE);
|
|
BOOL (WINAPI *pStackWalk64)(DWORD, HANDLE, HANDLE, STACKFRAME64 *, void *, PREAD_PROCESS_MEMORY_ROUTINE64, PFUNCTION_TABLE_ACCESS_ROUTINE64, PGET_MODULE_BASE_ROUTINE64, PTRANSLATE_ADDRESS_ROUTINE64);
|
|
DWORD64 (WINAPI *pSymGetModuleBase64)(HANDLE, DWORD64);
|
|
BOOL (WINAPI *pSymFromAddr)(HANDLE, DWORD64, DWORD64 *, SYMBOL_INFO *);
|
|
BOOL (WINAPI *pSymGetLineFromAddr64)(HANDLE, DWORD64, DWORD *, IMAGEHLP_LINE64 *);
|
|
HANDLE (WINAPI *pOpenThread)(DWORD, BOOL, DWORD);
|
|
DWORD tid = ((struct dump_thead_arg *)arg)->tid;
|
|
FILE *errout = ((struct dump_thead_arg *)arg)->errout;
|
|
HANDLE ph;
|
|
HANDLE th;
|
|
|
|
dbghelp = LoadLibrary("dbghelp.dll");
|
|
if (!dbghelp) return;
|
|
pSymInitialize = (BOOL (WINAPI *)(HANDLE, const char *, BOOL))GetProcAddress(dbghelp, "SymInitialize");
|
|
pSymCleanup = (BOOL (WINAPI *)(HANDLE))GetProcAddress(dbghelp, "SymCleanup");
|
|
pStackWalk64 = (BOOL (WINAPI *)(DWORD, HANDLE, HANDLE, STACKFRAME64 *, void *, PREAD_PROCESS_MEMORY_ROUTINE64, PFUNCTION_TABLE_ACCESS_ROUTINE64, PGET_MODULE_BASE_ROUTINE64, PTRANSLATE_ADDRESS_ROUTINE64))GetProcAddress(dbghelp, "StackWalk64");
|
|
pSymGetModuleBase64 = (DWORD64 (WINAPI *)(HANDLE, DWORD64))GetProcAddress(dbghelp, "SymGetModuleBase64");
|
|
pSymFromAddr = (BOOL (WINAPI *)(HANDLE, DWORD64, DWORD64 *, SYMBOL_INFO *))GetProcAddress(dbghelp, "SymFromAddr");
|
|
pSymGetLineFromAddr64 = (BOOL (WINAPI *)(HANDLE, DWORD64, DWORD *, IMAGEHLP_LINE64 *))GetProcAddress(dbghelp, "SymGetLineFromAddr64");
|
|
pOpenThread = (HANDLE (WINAPI *)(DWORD, BOOL, DWORD))GetProcAddress(GetModuleHandle("kernel32.dll"), "OpenThread");
|
|
if (pSymInitialize && pSymCleanup && pStackWalk64 && pSymGetModuleBase64 &&
|
|
pSymFromAddr && pSymGetLineFromAddr64 && pOpenThread) {
|
|
SymSetOptions(SYMOPT_UNDNAME | SYMOPT_DEFERRED_LOADS | SYMOPT_DEBUG | SYMOPT_LOAD_LINES);
|
|
ph = GetCurrentProcess();
|
|
pSymInitialize(ph, NULL, TRUE);
|
|
th = pOpenThread(THREAD_SUSPEND_RESUME|THREAD_GET_CONTEXT, FALSE, tid);
|
|
if (th) {
|
|
if (SuspendThread(th) != (DWORD)-1) {
|
|
CONTEXT context;
|
|
memset(&context, 0, sizeof(context));
|
|
context.ContextFlags = CONTEXT_FULL;
|
|
if (GetThreadContext(th, &context)) {
|
|
char libpath[MAX_PATH];
|
|
char buf[sizeof(SYMBOL_INFO) + MAX_SYM_NAME];
|
|
SYMBOL_INFO *info = (SYMBOL_INFO *)buf;
|
|
DWORD mac;
|
|
STACKFRAME64 frame;
|
|
memset(&frame, 0, sizeof(frame));
|
|
#if defined(_M_AMD64) || defined(__x86_64__)
|
|
mac = IMAGE_FILE_MACHINE_AMD64;
|
|
frame.AddrPC.Mode = AddrModeFlat;
|
|
frame.AddrPC.Offset = context.Rip;
|
|
frame.AddrFrame.Mode = AddrModeFlat;
|
|
frame.AddrFrame.Offset = context.Rbp;
|
|
frame.AddrStack.Mode = AddrModeFlat;
|
|
frame.AddrStack.Offset = context.Rsp;
|
|
#elif defined(_M_ARM64) || defined(__aarch64__)
|
|
mac = IMAGE_FILE_MACHINE_ARM64;
|
|
frame.AddrPC.Mode = AddrModeFlat;
|
|
frame.AddrPC.Offset = context.Pc;
|
|
frame.AddrFrame.Mode = AddrModeFlat;
|
|
frame.AddrFrame.Offset = context.Fp;
|
|
frame.AddrStack.Mode = AddrModeFlat;
|
|
frame.AddrStack.Offset = context.Sp;
|
|
#else /* i386 */
|
|
mac = IMAGE_FILE_MACHINE_I386;
|
|
frame.AddrPC.Mode = AddrModeFlat;
|
|
frame.AddrPC.Offset = context.Eip;
|
|
frame.AddrFrame.Mode = AddrModeFlat;
|
|
frame.AddrFrame.Offset = context.Ebp;
|
|
frame.AddrStack.Mode = AddrModeFlat;
|
|
frame.AddrStack.Offset = context.Esp;
|
|
#endif
|
|
|
|
while (pStackWalk64(mac, ph, th, &frame, &context, NULL,
|
|
NULL, NULL, NULL)) {
|
|
DWORD64 addr = frame.AddrPC.Offset;
|
|
IMAGEHLP_LINE64 line;
|
|
DWORD64 displacement;
|
|
DWORD tmp;
|
|
|
|
if (addr == frame.AddrReturn.Offset || addr == 0 ||
|
|
frame.AddrReturn.Offset == 0)
|
|
break;
|
|
|
|
memset(buf, 0, sizeof(buf));
|
|
info->SizeOfStruct = sizeof(SYMBOL_INFO);
|
|
info->MaxNameLen = MAX_SYM_NAME;
|
|
if (pSymFromAddr(ph, addr, &displacement, info)) {
|
|
if (GetModuleFileName((HANDLE)(uintptr_t)pSymGetModuleBase64(ph, addr), libpath, sizeof(libpath)))
|
|
kprintf("%s", libpath);
|
|
kprintf("(%s+0x%"PRI_64_PREFIX"x)",
|
|
info->Name, displacement);
|
|
}
|
|
kprintf(" [0x%p]", (void *)(VALUE)addr);
|
|
memset(&line, 0, sizeof(line));
|
|
line.SizeOfStruct = sizeof(line);
|
|
if (pSymGetLineFromAddr64(ph, addr, &tmp, &line))
|
|
kprintf(" %s:%lu", line.FileName, line.LineNumber);
|
|
kprintf("\n");
|
|
}
|
|
}
|
|
|
|
error:
|
|
ResumeThread(th);
|
|
}
|
|
CloseHandle(th);
|
|
}
|
|
pSymCleanup(ph);
|
|
}
|
|
FreeLibrary(dbghelp);
|
|
}
|
|
#endif
|
|
|
|
void
|
|
rb_print_backtrace(FILE *errout)
|
|
{
|
|
#if USE_BACKTRACE
|
|
#define MAX_NATIVE_TRACE 1024
|
|
static void *trace[MAX_NATIVE_TRACE];
|
|
int n = (int)backtrace(trace, MAX_NATIVE_TRACE);
|
|
#if (defined(USE_ELF) || defined(HAVE_MACH_O_LOADER_H)) && defined(HAVE_DLADDR) && !defined(__sparc)
|
|
rb_dump_backtrace_with_lines(n, trace, errout);
|
|
#else
|
|
char **syms = backtrace_symbols(trace, n);
|
|
if (syms) {
|
|
int i;
|
|
for (i=0; i<n; i++) {
|
|
kprintf("%s\n", syms[i]);
|
|
}
|
|
free(syms);
|
|
}
|
|
error:
|
|
/* ignore errors at writing */;
|
|
#endif
|
|
#elif defined(_WIN32)
|
|
struct dump_thead_arg arg = {
|
|
.tid = GetCurrentThreadId(),
|
|
.errout = errout,
|
|
};
|
|
HANDLE th = (HANDLE)_beginthread(dump_thread, 0, &arg);
|
|
if (th != (HANDLE)-1)
|
|
WaitForSingleObject(th, INFINITE);
|
|
#endif
|
|
}
|
|
|
|
#ifdef HAVE_LIBPROCSTAT
|
|
struct procstat;
|
|
struct kinfo_proc;
|
|
static void procstat_vm(struct procstat *, struct kinfo_proc *, FILE *);
|
|
#include "missing/procstat_vm.c"
|
|
#endif
|
|
|
|
#if defined __linux__
|
|
# if defined(__x86_64__) || defined(__i386__)
|
|
# define dump_machine_register(reg) (col_count = print_machine_register(errout, mctx->gregs[REG_##reg], #reg, col_count, 80))
|
|
# elif defined(__aarch64__) || defined(__arm__) || defined(__riscv) || defined(__loongarch64)
|
|
# define dump_machine_register(reg, regstr) (col_count = print_machine_register(errout, reg, regstr, col_count, 80))
|
|
# endif
|
|
#elif defined __APPLE__
|
|
# if defined(__aarch64__)
|
|
# define dump_machine_register(reg, regstr) (col_count = print_machine_register(errout, mctx->MCTX_SS_REG(reg), regstr, col_count, 80))
|
|
# else
|
|
# define dump_machine_register(reg) (col_count = print_machine_register(errout, mctx->MCTX_SS_REG(reg), #reg, col_count, 80))
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef dump_machine_register
|
|
static int
|
|
print_machine_register(FILE *errout, size_t reg, const char *reg_name, int col_count, int max_col)
|
|
{
|
|
int ret;
|
|
char buf[64];
|
|
static const int size_width = sizeof(size_t) * CHAR_BIT / 4;
|
|
|
|
ret = snprintf(buf, sizeof(buf), " %3.3s: 0x%.*" PRIxSIZE, reg_name, size_width, reg);
|
|
if (col_count + ret > max_col) {
|
|
kputs("\n");
|
|
col_count = 0;
|
|
}
|
|
col_count += ret;
|
|
kputs(buf);
|
|
return col_count;
|
|
|
|
error:
|
|
return -1;
|
|
}
|
|
|
|
static bool
|
|
rb_dump_machine_register(FILE *errout, const ucontext_t *ctx)
|
|
{
|
|
int col_count = 0;
|
|
if (!ctx) return true;
|
|
|
|
kprintf("-- Machine register context "
|
|
"------------------------------------------------\n");
|
|
|
|
# if defined __linux__
|
|
{
|
|
const mcontext_t *const mctx = &ctx->uc_mcontext;
|
|
# if defined __x86_64__
|
|
dump_machine_register(RIP);
|
|
dump_machine_register(RBP);
|
|
dump_machine_register(RSP);
|
|
dump_machine_register(RAX);
|
|
dump_machine_register(RBX);
|
|
dump_machine_register(RCX);
|
|
dump_machine_register(RDX);
|
|
dump_machine_register(RDI);
|
|
dump_machine_register(RSI);
|
|
dump_machine_register(R8);
|
|
dump_machine_register(R9);
|
|
dump_machine_register(R10);
|
|
dump_machine_register(R11);
|
|
dump_machine_register(R12);
|
|
dump_machine_register(R13);
|
|
dump_machine_register(R14);
|
|
dump_machine_register(R15);
|
|
dump_machine_register(EFL);
|
|
# elif defined __i386__
|
|
dump_machine_register(GS);
|
|
dump_machine_register(FS);
|
|
dump_machine_register(ES);
|
|
dump_machine_register(DS);
|
|
dump_machine_register(EDI);
|
|
dump_machine_register(ESI);
|
|
dump_machine_register(EBP);
|
|
dump_machine_register(ESP);
|
|
dump_machine_register(EBX);
|
|
dump_machine_register(EDX);
|
|
dump_machine_register(ECX);
|
|
dump_machine_register(EAX);
|
|
dump_machine_register(TRAPNO);
|
|
dump_machine_register(ERR);
|
|
dump_machine_register(EIP);
|
|
dump_machine_register(CS);
|
|
dump_machine_register(EFL);
|
|
dump_machine_register(UESP);
|
|
dump_machine_register(SS);
|
|
# elif defined __aarch64__
|
|
dump_machine_register(mctx->regs[0], "x0");
|
|
dump_machine_register(mctx->regs[1], "x1");
|
|
dump_machine_register(mctx->regs[2], "x2");
|
|
dump_machine_register(mctx->regs[3], "x3");
|
|
dump_machine_register(mctx->regs[4], "x4");
|
|
dump_machine_register(mctx->regs[5], "x5");
|
|
dump_machine_register(mctx->regs[6], "x6");
|
|
dump_machine_register(mctx->regs[7], "x7");
|
|
dump_machine_register(mctx->regs[18], "x18");
|
|
dump_machine_register(mctx->regs[19], "x19");
|
|
dump_machine_register(mctx->regs[20], "x20");
|
|
dump_machine_register(mctx->regs[21], "x21");
|
|
dump_machine_register(mctx->regs[22], "x22");
|
|
dump_machine_register(mctx->regs[23], "x23");
|
|
dump_machine_register(mctx->regs[24], "x24");
|
|
dump_machine_register(mctx->regs[25], "x25");
|
|
dump_machine_register(mctx->regs[26], "x26");
|
|
dump_machine_register(mctx->regs[27], "x27");
|
|
dump_machine_register(mctx->regs[28], "x28");
|
|
dump_machine_register(mctx->regs[29], "x29");
|
|
dump_machine_register(mctx->sp, "sp");
|
|
dump_machine_register(mctx->fault_address, "fault_address");
|
|
# elif defined __arm__
|
|
dump_machine_register(mctx->arm_r0, "r0");
|
|
dump_machine_register(mctx->arm_r1, "r1");
|
|
dump_machine_register(mctx->arm_r2, "r2");
|
|
dump_machine_register(mctx->arm_r3, "r3");
|
|
dump_machine_register(mctx->arm_r4, "r4");
|
|
dump_machine_register(mctx->arm_r5, "r5");
|
|
dump_machine_register(mctx->arm_r6, "r6");
|
|
dump_machine_register(mctx->arm_r7, "r7");
|
|
dump_machine_register(mctx->arm_r8, "r8");
|
|
dump_machine_register(mctx->arm_r9, "r9");
|
|
dump_machine_register(mctx->arm_r10, "r10");
|
|
dump_machine_register(mctx->arm_sp, "sp");
|
|
dump_machine_register(mctx->fault_address, "fault_address");
|
|
# elif defined __riscv
|
|
dump_machine_register(mctx->__gregs[REG_SP], "sp");
|
|
dump_machine_register(mctx->__gregs[REG_S0], "s0");
|
|
dump_machine_register(mctx->__gregs[REG_S1], "s1");
|
|
dump_machine_register(mctx->__gregs[REG_A0], "a0");
|
|
dump_machine_register(mctx->__gregs[REG_A0+1], "a1");
|
|
dump_machine_register(mctx->__gregs[REG_A0+2], "a2");
|
|
dump_machine_register(mctx->__gregs[REG_A0+3], "a3");
|
|
dump_machine_register(mctx->__gregs[REG_A0+4], "a4");
|
|
dump_machine_register(mctx->__gregs[REG_A0+5], "a5");
|
|
dump_machine_register(mctx->__gregs[REG_A0+6], "a6");
|
|
dump_machine_register(mctx->__gregs[REG_A0+7], "a7");
|
|
dump_machine_register(mctx->__gregs[REG_S2], "s2");
|
|
dump_machine_register(mctx->__gregs[REG_S2+1], "s3");
|
|
dump_machine_register(mctx->__gregs[REG_S2+2], "s4");
|
|
dump_machine_register(mctx->__gregs[REG_S2+3], "s5");
|
|
dump_machine_register(mctx->__gregs[REG_S2+4], "s6");
|
|
dump_machine_register(mctx->__gregs[REG_S2+5], "s7");
|
|
dump_machine_register(mctx->__gregs[REG_S2+6], "s8");
|
|
dump_machine_register(mctx->__gregs[REG_S2+7], "s9");
|
|
dump_machine_register(mctx->__gregs[REG_S2+8], "s10");
|
|
dump_machine_register(mctx->__gregs[REG_S2+9], "s11");
|
|
# elif defined __loongarch64
|
|
dump_machine_register(mctx->__gregs[LARCH_REG_SP], "sp");
|
|
dump_machine_register(mctx->__gregs[LARCH_REG_A0], "a0");
|
|
dump_machine_register(mctx->__gregs[LARCH_REG_A0+1], "a1");
|
|
dump_machine_register(mctx->__gregs[LARCH_REG_A0+2], "a2");
|
|
dump_machine_register(mctx->__gregs[LARCH_REG_A0+3], "a3");
|
|
dump_machine_register(mctx->__gregs[LARCH_REG_A0+4], "a4");
|
|
dump_machine_register(mctx->__gregs[LARCH_REG_A0+5], "a5");
|
|
dump_machine_register(mctx->__gregs[LARCH_REG_A0+6], "a6");
|
|
dump_machine_register(mctx->__gregs[LARCH_REG_A0+7], "a7");
|
|
dump_machine_register(mctx->__gregs[LARCH_REG_A0+8], "fp");
|
|
dump_machine_register(mctx->__gregs[LARCH_REG_S0], "s0");
|
|
dump_machine_register(mctx->__gregs[LARCH_REG_S1], "s1");
|
|
dump_machine_register(mctx->__gregs[LARCH_REG_S2], "s2");
|
|
dump_machine_register(mctx->__gregs[LARCH_REG_S0+3], "s3");
|
|
dump_machine_register(mctx->__gregs[LARCH_REG_S0+4], "s4");
|
|
dump_machine_register(mctx->__gregs[LARCH_REG_S0+5], "s5");
|
|
dump_machine_register(mctx->__gregs[LARCH_REG_S0+6], "s6");
|
|
dump_machine_register(mctx->__gregs[LARCH_REG_S0+7], "s7");
|
|
dump_machine_register(mctx->__gregs[LARCH_REG_S0+8], "s8");
|
|
# endif
|
|
}
|
|
# elif defined __APPLE__
|
|
{
|
|
const mcontext_t mctx = ctx->uc_mcontext;
|
|
# if defined __x86_64__
|
|
dump_machine_register(rax);
|
|
dump_machine_register(rbx);
|
|
dump_machine_register(rcx);
|
|
dump_machine_register(rdx);
|
|
dump_machine_register(rdi);
|
|
dump_machine_register(rsi);
|
|
dump_machine_register(rbp);
|
|
dump_machine_register(rsp);
|
|
dump_machine_register(r8);
|
|
dump_machine_register(r9);
|
|
dump_machine_register(r10);
|
|
dump_machine_register(r11);
|
|
dump_machine_register(r12);
|
|
dump_machine_register(r13);
|
|
dump_machine_register(r14);
|
|
dump_machine_register(r15);
|
|
dump_machine_register(rip);
|
|
dump_machine_register(rflags);
|
|
# elif defined __i386__
|
|
dump_machine_register(eax);
|
|
dump_machine_register(ebx);
|
|
dump_machine_register(ecx);
|
|
dump_machine_register(edx);
|
|
dump_machine_register(edi);
|
|
dump_machine_register(esi);
|
|
dump_machine_register(ebp);
|
|
dump_machine_register(esp);
|
|
dump_machine_register(ss);
|
|
dump_machine_register(eflags);
|
|
dump_machine_register(eip);
|
|
dump_machine_register(cs);
|
|
dump_machine_register(ds);
|
|
dump_machine_register(es);
|
|
dump_machine_register(fs);
|
|
dump_machine_register(gs);
|
|
# elif defined __aarch64__
|
|
dump_machine_register(x[0], "x0");
|
|
dump_machine_register(x[1], "x1");
|
|
dump_machine_register(x[2], "x2");
|
|
dump_machine_register(x[3], "x3");
|
|
dump_machine_register(x[4], "x4");
|
|
dump_machine_register(x[5], "x5");
|
|
dump_machine_register(x[6], "x6");
|
|
dump_machine_register(x[7], "x7");
|
|
dump_machine_register(x[18], "x18");
|
|
dump_machine_register(x[19], "x19");
|
|
dump_machine_register(x[20], "x20");
|
|
dump_machine_register(x[21], "x21");
|
|
dump_machine_register(x[22], "x22");
|
|
dump_machine_register(x[23], "x23");
|
|
dump_machine_register(x[24], "x24");
|
|
dump_machine_register(x[25], "x25");
|
|
dump_machine_register(x[26], "x26");
|
|
dump_machine_register(x[27], "x27");
|
|
dump_machine_register(x[28], "x28");
|
|
dump_machine_register(lr, "lr");
|
|
dump_machine_register(fp, "fp");
|
|
dump_machine_register(sp, "sp");
|
|
# endif
|
|
}
|
|
# endif
|
|
kprintf("\n\n");
|
|
return true;
|
|
|
|
error:
|
|
return false;
|
|
}
|
|
#else
|
|
# define rb_dump_machine_register(errout, ctx) ((void)0)
|
|
#endif /* dump_machine_register */
|
|
|
|
bool
|
|
rb_vm_bugreport(const void *ctx, FILE *errout)
|
|
{
|
|
const char *cmd = getenv("RUBY_ON_BUG");
|
|
if (cmd) {
|
|
char buf[0x100];
|
|
snprintf(buf, sizeof(buf), "%s %"PRI_PIDT_PREFIX"d", cmd, getpid());
|
|
int r = system(buf);
|
|
if (r == -1) {
|
|
snprintf(buf, sizeof(buf), "Launching RUBY_ON_BUG command failed.");
|
|
}
|
|
}
|
|
|
|
// Thread unsafe best effort attempt to stop printing the bug report in an
|
|
// infinite loop. Can happen with corrupt Ruby stack.
|
|
{
|
|
static bool crashing = false;
|
|
if (crashing) {
|
|
kprintf("Crashed while printing bug report\n");
|
|
return true;
|
|
}
|
|
crashing = true;
|
|
}
|
|
|
|
#ifdef __linux__
|
|
# define PROC_MAPS_NAME "/proc/self/maps"
|
|
#endif
|
|
#ifdef PROC_MAPS_NAME
|
|
enum {other_runtime_info = 1};
|
|
#else
|
|
enum {other_runtime_info = 0};
|
|
#endif
|
|
const rb_vm_t *const vm = GET_VM();
|
|
const rb_execution_context_t *ec = rb_current_execution_context(false);
|
|
|
|
if (vm && ec) {
|
|
rb_vmdebug_stack_dump_raw(ec, ec->cfp, errout);
|
|
rb_backtrace_print_as_bugreport(errout);
|
|
kputs("\n");
|
|
// If we get here, hopefully things are intact enough that
|
|
// we can read these two numbers. It is an estimate because
|
|
// we are reading without synchronization.
|
|
kprintf("-- Threading information "
|
|
"---------------------------------------------------\n");
|
|
kprintf("Total ractor count: %u\n", vm->ractor.cnt);
|
|
kprintf("Ruby thread count for this ractor: %u\n", rb_ec_ractor_ptr(ec)->threads.cnt);
|
|
if (rb_fiber_scheduler_get() != Qnil) {
|
|
kprintf("Note that the Fiber scheduler is enabled\n");
|
|
}
|
|
kputs("\n");
|
|
}
|
|
|
|
rb_dump_machine_register(errout, ctx);
|
|
|
|
#if USE_BACKTRACE || defined(_WIN32)
|
|
kprintf("-- C level backtrace information "
|
|
"-------------------------------------------\n");
|
|
rb_print_backtrace(errout);
|
|
|
|
|
|
kprintf("\n");
|
|
#endif /* USE_BACKTRACE */
|
|
|
|
if (other_runtime_info || vm) {
|
|
kprintf("-- Other runtime information "
|
|
"-----------------------------------------------\n\n");
|
|
}
|
|
if (vm && !rb_during_gc()) {
|
|
int i;
|
|
VALUE name;
|
|
long len;
|
|
const int max_name_length = 1024;
|
|
# define LIMITED_NAME_LENGTH(s) \
|
|
(((len = RSTRING_LEN(s)) > max_name_length) ? max_name_length : (int)len)
|
|
|
|
name = vm->progname;
|
|
if (name) {
|
|
kprintf("* Loaded script: %.*s\n",
|
|
LIMITED_NAME_LENGTH(name), RSTRING_PTR(name));
|
|
kprintf("\n");
|
|
}
|
|
if (vm->loaded_features) {
|
|
kprintf("* Loaded features:\n\n");
|
|
for (i=0; i<RARRAY_LEN(vm->loaded_features); i++) {
|
|
name = RARRAY_AREF(vm->loaded_features, i);
|
|
if (RB_TYPE_P(name, T_STRING)) {
|
|
kprintf(" %4d %.*s\n", i,
|
|
LIMITED_NAME_LENGTH(name), RSTRING_PTR(name));
|
|
}
|
|
else if (RB_TYPE_P(name, T_CLASS) || RB_TYPE_P(name, T_MODULE)) {
|
|
const char *const type = RB_TYPE_P(name, T_CLASS) ?
|
|
"class" : "module";
|
|
name = rb_search_class_path(rb_class_real(name));
|
|
if (!RB_TYPE_P(name, T_STRING)) {
|
|
kprintf(" %4d %s:<unnamed>\n", i, type);
|
|
continue;
|
|
}
|
|
kprintf(" %4d %s:%.*s\n", i, type,
|
|
LIMITED_NAME_LENGTH(name), RSTRING_PTR(name));
|
|
}
|
|
else {
|
|
VALUE klass = rb_search_class_path(rb_obj_class(name));
|
|
if (!RB_TYPE_P(klass, T_STRING)) {
|
|
kprintf(" %4d #<%p:%p>\n", i,
|
|
(void *)CLASS_OF(name), (void *)name);
|
|
continue;
|
|
}
|
|
kprintf(" %4d #<%.*s:%p>\n", i,
|
|
LIMITED_NAME_LENGTH(klass), RSTRING_PTR(klass),
|
|
(void *)name);
|
|
}
|
|
}
|
|
}
|
|
kprintf("\n");
|
|
}
|
|
|
|
{
|
|
#ifndef RUBY_ASAN_ENABLED
|
|
# ifdef PROC_MAPS_NAME
|
|
{
|
|
FILE *fp = fopen(PROC_MAPS_NAME, "r");
|
|
if (fp) {
|
|
kprintf("* Process memory map:\n\n");
|
|
|
|
while (!feof(fp)) {
|
|
char buff[0x100];
|
|
size_t rn = fread(buff, 1, 0x100, fp);
|
|
if (fwrite(buff, 1, rn, errout) != rn)
|
|
break;
|
|
}
|
|
|
|
fclose(fp);
|
|
kprintf("\n\n");
|
|
}
|
|
}
|
|
# endif /* __linux__ */
|
|
# ifdef HAVE_LIBPROCSTAT
|
|
# define MIB_KERN_PROC_PID_LEN 4
|
|
int mib[MIB_KERN_PROC_PID_LEN];
|
|
struct kinfo_proc kp;
|
|
size_t len = sizeof(struct kinfo_proc);
|
|
mib[0] = CTL_KERN;
|
|
mib[1] = KERN_PROC;
|
|
mib[2] = KERN_PROC_PID;
|
|
mib[3] = getpid();
|
|
if (sysctl(mib, MIB_KERN_PROC_PID_LEN, &kp, &len, NULL, 0) == -1) {
|
|
kprintf("sysctl: %s\n", strerror(errno));
|
|
}
|
|
else {
|
|
struct procstat *prstat = procstat_open_sysctl();
|
|
kprintf("* Process memory map:\n\n");
|
|
procstat_vm(prstat, &kp, errout);
|
|
procstat_close(prstat);
|
|
kprintf("\n");
|
|
}
|
|
# endif /* __FreeBSD__ */
|
|
# ifdef __APPLE__
|
|
vm_address_t addr = 0;
|
|
vm_size_t size = 0;
|
|
struct vm_region_submap_info map;
|
|
mach_msg_type_number_t count = VM_REGION_SUBMAP_INFO_COUNT;
|
|
natural_t depth = 0;
|
|
|
|
kprintf("* Process memory map:\n\n");
|
|
while (1) {
|
|
if (vm_region_recurse(mach_task_self(), &addr, &size, &depth,
|
|
(vm_region_recurse_info_t)&map, &count) != KERN_SUCCESS) {
|
|
break;
|
|
}
|
|
|
|
if (map.is_submap) {
|
|
// We only look at main addresses
|
|
depth++;
|
|
}
|
|
else {
|
|
kprintf("%lx-%lx %s%s%s", addr, (addr+size),
|
|
((map.protection & VM_PROT_READ) != 0 ? "r" : "-"),
|
|
((map.protection & VM_PROT_WRITE) != 0 ? "w" : "-"),
|
|
((map.protection & VM_PROT_EXECUTE) != 0 ? "x" : "-"));
|
|
# ifdef HAVE_LIBPROC_H
|
|
char buff[PATH_MAX];
|
|
if (proc_regionfilename(getpid(), addr, buff, sizeof(buff)) > 0) {
|
|
kprintf(" %s", buff);
|
|
}
|
|
# endif
|
|
kprintf("\n");
|
|
}
|
|
|
|
addr += size;
|
|
size = 0;
|
|
}
|
|
# endif
|
|
#endif
|
|
}
|
|
return true;
|
|
|
|
error:
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
rb_vmdebug_stack_dump_all_threads(void)
|
|
{
|
|
rb_thread_t *th = NULL;
|
|
rb_ractor_t *r = GET_RACTOR();
|
|
FILE *errout = stderr;
|
|
|
|
// TODO: now it only shows current ractor
|
|
ccan_list_for_each(&r->threads.set, th, lt_node) {
|
|
#ifdef NON_SCALAR_THREAD_ID
|
|
kprintf("th: %p, native_id: N/A\n", th);
|
|
#else
|
|
kprintf("th: %p, native_id: %p\n", (void *)th, (void *)(uintptr_t)th->nt->thread_id);
|
|
#endif
|
|
if (!rb_vmdebug_stack_dump_raw(th->ec, th->ec->cfp, errout)) goto error;
|
|
}
|
|
return true;
|
|
|
|
error:
|
|
return false;
|
|
}
|