pbuf(packet buffer)是LwIP协议栈中用于表示数据包或数据缓冲区的结构体,ref是一个引用计数,用于跟踪有多少个实体正在使用这个缓冲区。当pbuf的引用计数不大于0时,调用pbuf_free来释放它是不合法的,因为这意味着该缓冲区可能已经被释放或者从未被正确引用,这会导致未定义的行为或程序崩溃。
The error appeared twice in 3 hours. assertion "pbuf_free: p->ref > 0" failed: file "/Users/ficeto/Desktop/ESP32/ESP32/esp-idf-public/components/lwip/core/pbuf.c", line 694, function: pbuf_free abort() was called at PC 0x400d825b on core 1 Backtrace: 0x400882f0:0x3ffd11c0 0x...
Security Insights Additional navigation options New issue Closed Description iloop2020 espressif-bot added Status: OpenedIssue is new on May 5, 2021 github-actions changed the titleassertion "pbuf_free: p->ref > 0" failed:assertion "pbuf_free: p->ref > 0" failed: (IDFGH-5213)on May 5, ...
LWIP2.1.2版本程序连续运行1个小时左右出现断言“Assertion "pbuf_free: p->ref > 0" failed at ...
Assertion "pbuf_free: p->ref > 0" failed at line 747 ../Middlewares/Third_Party/LwIP/src/core/pbuf.c Received too many bytes! Droping client. Hello Everyone, I am using STM32F429ZIT MCU and Modbus TCP library provided by FreeModbus....
Assertion "pbuf_free: p->ref > 0" failed at line 650 in ..\LWIP\lwip-1.4.1\src\core\pbuf.c这是什么问题lwip里正常运行都没问题,但运行久了,就会跳出这个问题,之 ...
count = 0; //记录被释放的pbuf数量 while (p != NULL) { u16_t ref; SYS_ARCH_DECL_PROTECT(old_level); //申请临界保护变量 SYS_ARCH_PROTECT(old_level); //进入临界区 LWIP_ASSERT("pbuf_free: p->ref > 0", p->ref > 0);
Has any one seen an issue with the following error durring run time: Assertion "pbuf_free: p->ref > 0" failed at line 567 in
pbuf_free():数据包释放函数 pbuf_ref():用于将pbuf中的ref加1 pbuf_chain():用于连接pbufs,连接两个pbuf(链表)为一个pbuf链表 pbuf_dechain():用于连接pbufs pbuf_copy():用于将一个任何类型的pbuf中的数据拷贝到一个PBUf_RAM类型的pbuf中 pbuf_take():用于向pbuf的数据区域拷贝数据 ...
case PBUF_LINK: // 如果是链路层申请pbuf内存,那么数据偏移位置就是0 break; case PBUF_RAW: break; default: ASSERT("pbuf_alloc: bad pbuf layer", 0); return NULL; } switch(flag) { case PBUF_POOL: /* Allocate head of pbuf chain into p. */ ...