fix(coredump): increase sanity check before get summary

Closes espressif#13594

Author: erhankur

components/espcoredump/src/core_dump_elf.c

@@ -762,39 +762,23 @@ typedef struct {
     void *n_ptr;
 } elf_note_content_t;
 
+esp_err_t esp_core_dump_partition_and_size_get(const esp_partition_t **partition, uint32_t* size);
+
 /* Below are the helper function to parse the core dump ELF stored in flash */
 static esp_err_t elf_core_dump_image_mmap(esp_partition_mmap_handle_t* core_data_handle, const void **map_addr)
 {
-    size_t out_size;
+    const esp_partition_t *core_part = NULL;
+    uint32_t out_size;
     assert(core_data_handle);
     assert(map_addr);
 
-    /* Find the partition that could potentially contain a (previous) core dump. */
-    const esp_partition_t *core_part = esp_partition_find_first(ESP_PARTITION_TYPE_DATA,
-                                                                ESP_PARTITION_SUBTYPE_DATA_COREDUMP,
-                                                                NULL);
-    if (!core_part) {
-        ESP_COREDUMP_LOGE("Core dump partition not found!");
-        return ESP_ERR_NOT_FOUND;
-    }
-    if (core_part->size < sizeof(uint32_t)) {
-        ESP_COREDUMP_LOGE("Core dump partition too small!");
-        return ESP_ERR_INVALID_SIZE;
-    }
-    /* Data read from the mmapped core dump partition will be garbage if flash
-     * encryption is enabled in hardware and core dump partition is not encrypted
-     */
-    if (esp_flash_encryption_enabled() && !core_part->encrypted) {
-        ESP_COREDUMP_LOGE("Flash encryption enabled in hardware and core dump partition is not encrypted!");
-        return ESP_ERR_NOT_SUPPORTED;
-    }
-    /* Read the size of the core dump file from the partition */
-    esp_err_t ret = esp_partition_read(core_part, 0, &out_size, sizeof(uint32_t));
-    if (ret != ESP_OK) {
-        ESP_COREDUMP_LOGE("Failed to read core dump data size");
-        return ret;
+    /* Retrieve the partition and size. */
+    esp_err_t err = esp_core_dump_partition_and_size_get(&core_part, &out_size);
+    if (err != ESP_OK) {
+        return err;
     }
-    /* map the full core dump parition, including the checksum. */
+
+    /* map the full core dump partition, including the checksum. */
     return esp_partition_mmap(core_part, 0, out_size, ESP_PARTITION_MMAP_DATA,
                               map_addr, core_data_handle);
 }

components/espcoredump/src/core_dump_flash.c

@@ -55,7 +55,7 @@ esp_err_t esp_core_dump_write_data(core_dump_write_data_t *wr_data, void *data,
 #define ESP_COREDUMP_FLASH_ERASE(_off_, _len_)                   esp_flash_erase_region(esp_flash_default_chip, _off_, _len_)
 
 esp_err_t esp_core_dump_image_check(void);
-static esp_err_t esp_core_dump_partition_and_size_get(const esp_partition_t **partition, uint32_t* size);
+esp_err_t esp_core_dump_partition_and_size_get(const esp_partition_t **partition, uint32_t* size);
 
 static void esp_core_dump_flash_print_write_start(void)
 {
@@ -258,7 +258,7 @@ static esp_err_t esp_core_dump_flash_write_prepare(core_dump_write_data_t *wr_da
         padding = COREDUMP_CACHE_SIZE - modulo;
     }
 
-    /* Now we can check whether we have enough space in our core dump parition
+    /* Now we can check whether we have enough space in our core dump partition
      * or not. */
     if ((*data_len + padding + cs_len) > s_core_flash_config.partition.size) {
         ESP_COREDUMP_LOGE("Not enough space to save core dump!");
@@ -488,7 +488,7 @@ esp_err_t esp_core_dump_image_erase(void)
     return err;
 }
 
-static esp_err_t esp_core_dump_partition_and_size_get(const esp_partition_t **partition, uint32_t* size)
+esp_err_t esp_core_dump_partition_and_size_get(const esp_partition_t **partition, uint32_t* size)
 {
     uint32_t core_size = 0;
     const esp_partition_t *core_part = NULL;