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Full Discussion: Free() corrupted unsorted chunks
Operating Systems Linux Red Hat Free() corrupted unsorted chunks Post 302843421 by Karunx on Tuesday 13th of August 2013 06:21:58 AM
Old 08-13-2013
Free() corrupted unsorted chunks
We are migrating Pro*C code from SOLARIS to LINUX-Redhat.

While migrating we face memory de-allocation issue intermittently when accessing large volume of data.

Below is the part of the code(since code is big I am putting the part of the code where the issue comes):

------------------------------------------------------------

Code:
void free_frm_nde(node * nde_ptr)
{
static int num_ndes;
int i;

if (nde_ptr == NULL)
return;

if (nde_ptr->ptr_nxt != NULL)
free_frm_nde(nde_ptr->ptr_nxt);

for (i = 0; i < 7; i++)
{
if (nde_ptr->ptr_dwn[i] != NULL)
free_frm_nde(nde_ptr->ptr_dwn[i]); 
}
free(nde_ptr->ptr_dta); -- Error occurs here
free(nde_ptr);
}

------------------------------------------------------------

Below is the error message:

Code:
*** glibc detected *** : ./filename: free(): corrupted unsorted chunks: 0x0a068b80 ***
======= Backtrace: =========
/lib/libc.so.6[0xa044a5]
/lib/libc.so.6(cfree+0x59)[0xa048e9]
./filename[0x8051180]
./filename[0x805115c]
./filename[0x805115c]
./filename[0x805115c]
./filename[0x805115c]
./filename[0x804cb31]
./filename[0x804eea7]
./filename[0x804ed8f]
./filename[0x8049a27]
./filename[0x804966f]
/lib/libc.so.6(__libc_start_main+0xdc)[0x9b0e9c]
./[0x8048f21]
======= Memory map: ========
0097c000-00997000 r-xp 00000000 fd:03 229417 /lib/ld-2.5.so
00997000-00998000 r--p 0001a000 fd:03 229417 /lib/ld-2.5.so
00998000-00999000 rw-p 0001b000 fd:03 229417 /lib/ld-2.5.so
0099b000-00aef000 r-xp 00000000 fd:03 230066 /lib/libc-2.5.so
00aef000-00af0000 ---p 00154000 fd:03 230066 /lib/libc-2.5.so
00af0000-00af2000 r--p 00154000 fd:03 230066 /lib/libc-2.5.so
00af2000-00af3000 rw-p 00156000 fd:03 230066 /lib/libc-2.5.so
00af3000-00af6000 rw-p 00af3000 00:00 0
00af8000-00b0d000 r-xp 00000000 fd:03 230096 /lib/libpthread-2.5.so
00b0d000-00b0e000 ---p 00015000 fd:03 230096 /lib/libpthread-2.5.so

Any idea about this issue would be appreciated.

Thanks in advance.


Thanks in advance
Last edited by Don Cragun; 08-13-2013 at 08:36 AM.. Reason: Added CODE tags
 

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LEARN ABOUT OSX

libpthread

libpthread(3LIB)						Interface Libraries						  libpthread(3LIB)

NAME

       libpthread - POSIX threads library

SYNOPSIS

       cc -mt [ flag... ] file... -lpthread [ -lrt library... ]

DESCRIPTION

       Historically, functions in this library provided POSIX threading support. See standards(5).  This functionality now resides in libc(3LIB).

       This  library  is  maintained  to provide backward compatibility for both runtime and compilation environments. The shared object is imple-
       mented as a filter on libc.so.1. New application development needs to specify -lpthread only to obtain POSIX  semantics	for  fork(2)  that
       assumes the behavior of fork1(2) rather than the default behavior that forks all threads.

INTERFACES

       The  shared  object  libpthread.so.1 provides the public interfaces defined below. See intro(3) for additional information on shared object
       interfaces.

       __pthread_cleanup_pop		  __pthread_cleanup_push
       pthread_attr_destroy		  pthread_attr_getdetachstate
       pthread_attr_getguardsize	  pthread_attr_getinheritsched
       pthread_attr_getschedparam	  pthread_attr_getschedpolicy
       pthread_attr_getscope		  pthread_attr_getstackaddr
       pthread_attr_getstacksize	  pthread_attr_init
       pthread_attr_setdetachstate	  pthread_attr_setguardsize
       pthread_attr_setinheritsched	  pthread_attr_setschedparam
       pthread_attr_setschedpolicy	  pthread_attr_setscope
       pthread_attr_setstackaddr	  pthread_attr_setstacksize
       pthread_cancel			  pthread_cond_broadcast
       pthread_cond_destroy		  pthread_cond_init
       pthread_cond_reltimedwait_np	  pthread_cond_signal
       pthread_cond_timedwait		  pthread_cond_wait
       pthread_condattr_destroy 	  pthread_condattr_getpshared
       pthread_condattr_init		  pthread_condattr_setpshared
       pthread_create			  pthread_detach
       pthread_equal			  pthread_exit
       pthread_getconcurrency		  pthread_getschedparam
       pthread_getspecific		  pthread_join
       pthread_key_create		  pthread_key_delete
       pthread_kill			  pthread_mutex_consistent_np
       pthread_mutex_destroy		  pthread_mutex_getprioceiling
       pthread_mutex_init		  pthread_mutex_lock
       pthread_mutex_setprioceiling	  pthread_mutex_trylock
       pthread_mutex_unlock		  pthread_mutexattr_destroy
       pthread_mutexattr_getprioceiling   pthread_mutexattr_getprotocol
       pthread_mutexattr_getpshared	  pthread_mutexattr_getrobust_np
       pthread_mutexattr_gettype	  pthread_mutexattr_init
       pthread_mutexattr_setprioceiling   pthread_mutexattr_setprotocol
       pthread_mutexattr_setpshared	  pthread_mutexattr_setrobust_np
       pthread_mutexattr_settype	  pthread_once
       pthread_rwlock_destroy		  pthread_rwlock_init
       pthread_rwlock_rdlock		  pthread_rwlock_tryrdlock
       pthread_rwlock_trywrlock 	  pthread_rwlock_unlock
       pthread_rwlock_wrlock		  pthread_rwlockattr_destroy
       pthread_rwlockattr_getpshared	  pthread_rwlockattr_init
       pthread_rwlockattr_setpshared	  pthread_self
       pthread_setcancelstate		  pthread_setcanceltype
       pthread_setconcurrency		  pthread_setschedparam
       pthread_setspecific		  pthread_sigmask
       pthread_testcancel

FILES

       /lib/libpthread.so.1		       a filter on /lib/libc.so.1

       /lib/64/libpthread.so.1		       a filter on /lib/64/libc.so.1

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsl (32-bit)		   |
       +-----------------------------+-----------------------------+
       |			     |SUNWcslx (64-bit) 	   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       pvs(1), intro(2), intro(3), libc(3LIB), libc_db(3LIB), libthread(3LIB), attributes(5), standards(5), threads(5)

SunOS 5.10							    24 Mar 2004 						  libpthread(3LIB)
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