*** glibc detected *** malloc(): memory corruption: 0x09eab988 *** 发现是由于memset越界写引起的. 在Linux Server上不好模拟出来:不过若是先malloc,再越界memset,再free此内存块,然后malloc新内存块就会出现类似错误. #include<stdio.h> #include<stdlib.h> #include<string.h> int main() { char *p…

前段时间开发的一个后端C模块上线后,线上出core,初始时,因为訪问压力不大,所以崩溃是上线3天左右出现的.当时用gdb跟进调用堆栈并检查源代码,发现出core位置的代码沒有啥问题.因为当时开发任务较重,且该模块不保存状态(崩溃重新启动不影响对外服务),所以沒有深入跟进.后来随着client版本号逐渐放量导致訪问压力上升,噩梦開始了... 该模块会不定时core掉,并且差点儿每次崩溃时的调用堆栈都不一样,关键是最后几层堆栈非常多都位于差点儿不可能出问题的代码中,比方库函数或厂里的公共库. 好在在…

Buffer overflow in the read_server_hello function in lib/gnutls_handshake.c in GnuTLS before 3.1.25, 3.2.x before3.2.15, and 3.3.x before 3.3.4 allows remote servers to cause a denial of service (memory corruption) or possiblyexecute arbitrary code v…

作者:字节跳动终端技术--庞翔宇 内容摘要 ​ MemCorruption工具是字节跳动AppHealth (Client Infrastructure - AppHealth) 团队开发的一款用于定位野指针(UseAfterFree).内存越界(HeapBufferOverflow).重复释放(DoubleFree)类问题检测工具.广泛用于字节跳动旗下各大 App 线上问题检测.本文将通过方案原理和实践案例来介绍此工具. 背景 ​ 随着 Android App 开发的技术栈不断向Native层…

今天遇到了一个比较弱的问题,但是涉及到一些东西,所以记录一下. 问题表现为,系统BOSD,在析构函数进行free的时候,有的时候是在使用buffer的过程中就BSOD. 之前是怀疑因为分配的是paged buffer,所以在一些比较高级的IRQ的时候,会出现问题.但是ksproperty一般都是passive level的.然后就试了试unpaged buffer,发现问题依旧存在. 而后就去查,发现是有指针写越界了.这样,在释放这个指针的时候,就会出现把存放指针size的那个buffer给覆盖…

今天在调试一个程序时发生如题所示的错误,在malloc时报错. 经查是由于前面有内存越界,导致内存结构遭到破坏,才发生这样的错误.…

/* *  linux/mm/memory.c * *  Copyright (C) 1991, 1992  Linus Torvalds */ /* * demand-loading started 01.12.91 - seems it is high on the list of * things wanted, and it should be easy to implement. - Linus */ /* * Ok, demand-loading was easy, shared p…

Memory leakage has been a permanent annoyance for C/C++ programmers. Under MSVC, one useful feature of MFC is report memory leaks at the exit of an application (to the debugger output window, which can be displayed by the integration environment or a…

原文链接:http://www.linuxjournal.com/article/6556?page=0,0 An earlier article [“Memory Leak Detection in Embedded Systems”, LJ, September 2002, available atwww.linuxjournal.com/article/6059] discussed the detection of memory leaks when using C as the pro…

May 01, 2003  By Gianluca Insolvibile  in Embedded Software Call some useful fuctions of the GNU C library to save precious memory and to find nasty bugs. Dealing with dynamic memory traditionally has been one of the most awkward issues of C and C++…