Alex Henrie : dbghelp: Allocate real_path with the CRT and copy it to the module heap.
Module: wine Branch: master Commit: 00df1bea9a965695bff48541b57b6791a58fd02d URL: https://gitlab.winehq.org/wine/wine/-/commit/00df1bea9a965695bff48541b57b679... Author: Alex Henrie <alexhenrie24(a)gmail.com> Date: Mon Jun 26 20:39:27 2023 -0600 dbghelp: Allocate real_path with the CRT and copy it to the module heap. Fixes both a memory leak and an alloc/free mismatch, and the module heap is the most appropriate place to hold the variable long-term. --- dlls/dbghelp/dbghelp_private.h | 1 + dlls/dbghelp/module.c | 1 - dlls/dbghelp/pe_module.c | 76 ++++++++++++++++++++---------------------- dlls/dbghelp/storage.c | 7 ++++ 4 files changed, 45 insertions(+), 40 deletions(-) diff --git a/dlls/dbghelp/dbghelp_private.h b/dlls/dbghelp/dbghelp_private.h index 1ceefcdbde6..1ce221a0f27 100644 --- a/dlls/dbghelp/dbghelp_private.h +++ b/dlls/dbghelp/dbghelp_private.h @@ -44,6 +44,7 @@ void pool_destroy(struct pool* a) DECLSPEC_HIDDEN; void* pool_alloc(struct pool* a, size_t len) __WINE_ALLOC_SIZE(2) __WINE_MALLOC DECLSPEC_HIDDEN; void* pool_realloc(struct pool* a, void* ptr, size_t len) __WINE_ALLOC_SIZE(3) DECLSPEC_HIDDEN; char* pool_strdup(struct pool* a, const char* str) __WINE_MALLOC DECLSPEC_HIDDEN; +WCHAR* pool_wcsdup(struct pool* a, const WCHAR* str) __WINE_MALLOC DECLSPEC_HIDDEN; struct vector { diff --git a/dlls/dbghelp/module.c b/dlls/dbghelp/module.c index bae4a77f16e..1493d3006cc 100644 --- a/dlls/dbghelp/module.c +++ b/dlls/dbghelp/module.c @@ -1068,7 +1068,6 @@ BOOL module_remove(struct process* pcs, struct module* module) hash_table_destroy(&module->ht_types); HeapFree(GetProcessHeap(), 0, module->sources); HeapFree(GetProcessHeap(), 0, module->addr_sorttab); - HeapFree(GetProcessHeap(), 0, module->real_path); pool_destroy(&module->pool); /* native dbghelp doesn't invoke registered callback(,CBA_SYMBOLS_UNLOADED,) here * so do we diff --git a/dlls/dbghelp/pe_module.c b/dlls/dbghelp/pe_module.c index 3364498e0c7..6c07bf5826a 100644 --- a/dlls/dbghelp/pe_module.c +++ b/dlls/dbghelp/pe_module.c @@ -760,13 +760,10 @@ struct builtin_search static BOOL search_builtin_pe(void *param, HANDLE handle, const WCHAR *path) { struct builtin_search *search = param; - size_t size; if (!pe_map_file(handle, &search->fmap, DMT_PE)) return FALSE; - size = (lstrlenW(path) + 1) * sizeof(WCHAR); - if ((search->path = heap_alloc(size))) - memcpy(search->path, path, size); + search->path = wcsdup(path); return TRUE; } @@ -818,47 +815,48 @@ struct module* pe_load_native_module(struct process* pcs, const WCHAR* name, } if (name) lstrcpyW(loaded_name, name); } - if (!(modfmt = HeapAlloc(GetProcessHeap(), 0, sizeof(struct module_format) + sizeof(struct pe_module_info)))) - return NULL; - modfmt->u.pe_info = (struct pe_module_info*)(modfmt + 1); - if (pe_map_file(hFile, &modfmt->u.pe_info->fmap, DMT_PE)) + + if ((modfmt = HeapAlloc(GetProcessHeap(), 0, sizeof(struct module_format) + sizeof(struct pe_module_info)))) { - struct builtin_search builtin = { NULL }; - if (opened && modfmt->u.pe_info->fmap.u.pe.builtin && - search_dll_path(pcs, loaded_name, modfmt->u.pe_info->fmap.u.pe.file_header.Machine, search_builtin_pe, &builtin)) - { - TRACE("reloaded %s from %s\n", debugstr_w(loaded_name), debugstr_w(builtin.path)); - image_unmap_file(&modfmt->u.pe_info->fmap); - modfmt->u.pe_info->fmap = builtin.fmap; - real_path = builtin.path; - } - if (!base) base = PE_FROM_OPTHDR(&modfmt->u.pe_info->fmap, ImageBase); - if (!size) size = PE_FROM_OPTHDR(&modfmt->u.pe_info->fmap, SizeOfImage); - - module = module_new(pcs, loaded_name, DMT_PE, FALSE, base, size, - modfmt->u.pe_info->fmap.u.pe.file_header.TimeDateStamp, - PE_FROM_OPTHDR(&modfmt->u.pe_info->fmap, CheckSum), - modfmt->u.pe_info->fmap.u.pe.file_header.Machine); - if (module) - { - module->real_path = real_path; - modfmt->module = module; - modfmt->remove = pe_module_remove; - modfmt->loc_compute = NULL; - module->format_info[DFI_PE] = modfmt; - module->reloc_delta = base - PE_FROM_OPTHDR(&modfmt->u.pe_info->fmap, ImageBase); - } - else + modfmt->u.pe_info = (struct pe_module_info*)(modfmt + 1); + if (pe_map_file(hFile, &modfmt->u.pe_info->fmap, DMT_PE)) { - ERR("could not load the module '%s'\n", debugstr_w(loaded_name)); - heap_free(real_path); - image_unmap_file(&modfmt->u.pe_info->fmap); + struct builtin_search builtin = { NULL }; + if (opened && modfmt->u.pe_info->fmap.u.pe.builtin && + search_dll_path(pcs, loaded_name, modfmt->u.pe_info->fmap.u.pe.file_header.Machine, search_builtin_pe, &builtin)) + { + TRACE("reloaded %s from %s\n", debugstr_w(loaded_name), debugstr_w(builtin.path)); + image_unmap_file(&modfmt->u.pe_info->fmap); + modfmt->u.pe_info->fmap = builtin.fmap; + real_path = builtin.path; + } + if (!base) base = PE_FROM_OPTHDR(&modfmt->u.pe_info->fmap, ImageBase); + if (!size) size = PE_FROM_OPTHDR(&modfmt->u.pe_info->fmap, SizeOfImage); + + module = module_new(pcs, loaded_name, DMT_PE, FALSE, base, size, + modfmt->u.pe_info->fmap.u.pe.file_header.TimeDateStamp, + PE_FROM_OPTHDR(&modfmt->u.pe_info->fmap, CheckSum), + modfmt->u.pe_info->fmap.u.pe.file_header.Machine); + if (module) + { + module->real_path = real_path ? pool_wcsdup(&module->pool, real_path) : NULL; + modfmt->module = module; + modfmt->remove = pe_module_remove; + modfmt->loc_compute = NULL; + module->format_info[DFI_PE] = modfmt; + module->reloc_delta = base - PE_FROM_OPTHDR(&modfmt->u.pe_info->fmap, ImageBase); + } + else + { + ERR("could not load the module '%s'\n", debugstr_w(loaded_name)); + image_unmap_file(&modfmt->u.pe_info->fmap); + } } + if (!module) HeapFree(GetProcessHeap(), 0, modfmt); } - if (!module) HeapFree(GetProcessHeap(), 0, modfmt); if (opened) CloseHandle(hFile); - + free(real_path); return module; } diff --git a/dlls/dbghelp/storage.c b/dlls/dbghelp/storage.c index daed3aa8d99..038b625cf1c 100644 --- a/dlls/dbghelp/storage.c +++ b/dlls/dbghelp/storage.c @@ -55,6 +55,13 @@ char* pool_strdup(struct pool* pool, const char* str) return ret; } +WCHAR* pool_wcsdup(struct pool* pool, const WCHAR* str) +{ + WCHAR* ret; + if ((ret = pool_alloc(pool, (wcslen(str) + 1) * sizeof(WCHAR)))) wcscpy(ret, str); + return ret; +} + void vector_init(struct vector* v, unsigned esz, unsigned bucket_sz) { v->buckets = NULL;
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Alexandre Julliard