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loader: port guest fault diagnostics and remove host stack traces

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Co-authored-by: Ali Almohaya <AliAlmohaya@gmail.com>
This commit is contained in:
nmzik
2026-09-09 13:54:51 +04:00
parent 1af19eabf0
commit c7b0d77970
11 changed files with 41 additions and 145 deletions
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src/common/platform/sysDbg.h
+1 -3
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@@ -30,8 +30,6 @@ struct sys_dbg_stack_info_t {
#endif
};
void SysStackWalk(void** stack, int* depth);
void SysStackUsage(sys_dbg_stack_info_t& s); // NOLINT(google-runtime-references)
void SysStackUsagePrint(sys_dbg_stack_info_t& stack); // NOLINT(google-runtime-references)
void SysStackUsage(sys_dbg_stack_info_t& s); // NOLINT(google-runtime-references)
#endif /* KYTY_COMMON_PLATFORM_SYSDBG_H_ */
src/common/platform/sysLinuxDbg.cpp
-51
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@@ -8,7 +8,6 @@
#include <cstdlib>
#include <cstring>
#include <execinfo.h>
#include <pthread.h>
#include <sys/param.h>
#include <sys/types.h>
@@ -17,56 +16,6 @@
#include <libgen.h> // POSIX basename() lives here on macOS, not in <cstring>
#endif
// Avoid unwinding a guest-owned stack.
static bool OnOwnStack() {
const char* probe = reinterpret_cast<const char*>(&probe);
pthread_attr_t attr {};
#if defined(__APPLE__)
const auto* top = static_cast<const char*>(pthread_get_stackaddr_np(pthread_self()));
const auto size = pthread_get_stacksize_np(pthread_self());
(void)attr;
return top != nullptr && size != 0 && probe < top && probe >= top - size;
#else
if (pthread_getattr_np(pthread_self(), &attr) != 0) {
return false;
}
void* base = nullptr;
size_t size = 0;
const bool ok = pthread_attr_getstack(&attr, &base, &size) == 0 && base != nullptr && size != 0;
pthread_attr_destroy(&attr);
if (!ok) {
return false;
}
const auto* low = static_cast<const char*>(base);
return probe >= low && probe < low + size;
#endif
}
void SysStackWalk(void** stack, int* depth) {
if (stack == nullptr || depth == nullptr || *depth <= 0) {
if (depth != nullptr) {
*depth = 0;
}
return;
}
if (!OnOwnStack()) {
*depth = 0;
return;
}
const int n = ::backtrace(stack, *depth);
*depth = (n < 0 ? 0 : n);
}
void SysStackUsagePrint(sys_dbg_stack_info_t& stack) {
printf("stack: (0x%" PRIx64 ", %" PRIu64 ")\n", static_cast<uint64_t>(stack.commited_addr),
static_cast<uint64_t>(stack.commited_size));
printf("code: (0x%" PRIx64 ", %" PRIu64 ")\n", static_cast<uint64_t>(stack.code_addr),
static_cast<uint64_t>(stack.code_size));
}
void SysStackUsage(sys_dbg_stack_info_t& s) {
pid_t pid = getpid();
src/common/platform/sysWindowsDbg.cpp
-12
View File
@@ -15,18 +15,6 @@
#include "common/assert.h"
#include "common/platform/sysDbg.h"
void SysStackWalk(void** stack, int* depth) {
*depth = static_cast<int>(CaptureStackBackTrace(0, static_cast<DWORD>(*depth), stack, nullptr));
}
void SysStackUsagePrint(sys_dbg_stack_info_t& stack) {
printf("stack: (0x%" PRIx64 ", %" PRIu64 ") + (0x%" PRIx64 ", %" PRIu64 ") + (0x%" PRIx64
", %" PRIu64 ")\n",
static_cast<uint64_t>(stack.reserved_addr), static_cast<uint64_t>(stack.reserved_size),
static_cast<uint64_t>(stack.guard_addr), static_cast<uint64_t>(stack.guard_size),
static_cast<uint64_t>(stack.commited_addr), static_cast<uint64_t>(stack.commited_size));
}
void SysStackUsage(sys_dbg_stack_info_t& s) {
MEMORY_BASIC_INFORMATION mbi {};
[[maybe_unused]] size_t ss = VirtualQuery(&mbi, &mbi, sizeof(mbi));