FRTOS_ERR_QUEUE_CORRUPT embedded runtime_error ai_generated true

FreeRTOS：队列发送因内部损坏而失败，pxQueue->uxMessagesWaiting = 0xDEAD

FreeRTOS: Queue send failed due to internal corruption, pxQueue->uxMessagesWaiting = 0xDEAD

ID: embedded/freertos-queue-overflow-corruption

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75%修复率
90%置信度
1证据数
2024-06-12首次发现

版本兼容性

版本状态引入弃用备注
FreeRTOS v10.4.6 active — — —
ARM GCC v12.2.1 active — — —

根因分析

队列控制块内存损坏，通常由其他任务的缓冲区溢出或释放后使用导致。

English

Memory corruption in the queue control block, often caused by a buffer overflow or use-after-free in another task.

generic

官方文档

https://www.freertos.org/implementation/a00011.html

解决方案

  1. Add assertions to check queue integrity before each send: `configASSERT(pxQueue->uxMessagesWaiting <= pxQueue->uxLength);` and debug the memory overwrite source
  2. Use a memory protection unit (MPU) to guard queue control block memory, e.g., `mpu_set_region(MPU_REGION_QUEUE, (uint32_t)queue_cb, MPU_RW_PRIVILEGED);`

无效尝试

常见但无效的做法:

  1. 80% 失败

    Increasing queue length does not fix memory corruption; the control block is still overwritten by the same bug.

  2. 75% 失败

    Timing changes may mask the corruption temporarily but do not eliminate the root cause (e.g., buffer overflow).