Problems with memory allocation in dynamic modules

StackOverflow https://stackoverflow.com/questions/7109262

  •  25-12-2020
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Question

My programm successfully load a library (dlopen(..., RTLD_GLOBAL | RTLD_NOW);). Inside library I have a one function which calls malloc() function. When I try to allocate a small piece of memory (for example, 120 bytes), the function works well. But if I try to get more (for example, 1024 bytes), my application will die with a long report like:

*** glibc detected *** /home/darkamateur/NetBeansProjects/PureServer/dist/Debug/GNU-Linux-x86/pureserver: corrupted double-linked list: 0x00000000006267d0 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x731fd)[0x7ffff76d81fd]
/lib64/libc.so.6(+0x7363d)[0x7ffff76d863d]
/lib64/libc.so.6(+0x75994)[0x7ffff76da994]
/lib64/libc.so.6(__libc_malloc+0x62)[0x7ffff76dcfc2]
./libs/omps.blob(systemRun+0x12)[0x7ffff71cd9be]
/home/darkamateur/NetBeansProjects/PureServer/dist/Debug/GNU-Linux-x86/pureserver[0x401f48]
/lib64/libc.so.6(__libc_start_main+0xec)[0x7ffff7683d4c]
/home/darkamateur/NetBeansProjects/PureServer/dist/Debug/GNU-Linux-x86/pureserver[0x400fa9]

There is no any data exchange, shared variables, threads and so on.

Are there some differents between memory allocation in main application and it's dynamic libraries?

Was it helpful?

Solution

Probably has nothing to do with the dynamic libraries -- you're corrupting memory somewhere. valgrind is your friend

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