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I am creating an application, where I will read data from /proc/stat file which contains cpu uasge data and plot the values of cpu usage with respect to time.

For this I am writing a Timer event which for every 1 sec it opens the file and read the data and plot.

In my application I am calling the timer event 126 times.

At the 30 th iteration of the timer event the apllication is segmenting withe following message .

/**********************************************************/

*** glibc detected *** ./cpu: malloc(): memory corruption: 0x0000000000679e90 ***
======= Backtrace: =========
/lib64/libc.so.6[0x36c4c6f0e4]
/lib64/libc.so.6(__libc_malloc+0x7d)[0x36c4c7086d]
/lib64/libc.so.6[0x36c4c5ecda]
./cpu(_ZN7QWidget11qt_propertyEiiP8QVariant+0xf06)[0x4059be]
/usr/lib64/qt-3.3/lib/libqt-mt.so.3(_ZN7QObject5eventEP6QEvent+0x66)[0x3e79
560ff6]
/usr/lib64/qt-3.3/lib/libqt-mt.so.3(_ZN7QWidget5eventEP6QEvent+0x2 [0x3e79598518]
/usr/lib64/qt-3.3/lib/libqt-mt.so.3(_ZN12QApplication14internalNotifyEP7QOb
jectP6QEvent+0x85)[0x3e795007d5]
/usr/lib64/qt-3.3/lib/libqt-mt.so.3(_ZN12QApplication6notifyEP7QObjectP6QEv
ent+0xa4)[0x3e79501ca4]
/usr/lib64/qt-3.3/lib/libqt-mt.so.3(_ZN10QEventLoop14activateTimersEv+0x21c
)[0x3e794f5bbc]
/usr/lib64/qt-3.3/lib/libqt-mt.so.3(_ZN10QEventLoop13processEventsEj+0x4e1)
[0x3e794af351]
/usr/lib64/qt-3.3/lib/libqt-mt.so.3(_ZN10QEventLoop9enterLoopEv+0x41)[0x3e7
9517f91]
/usr/lib64/qt-3.3/lib/libqt-mt.so.3(_ZN10QEventLoop4execEv+0x22)[0x3e79517e
72]
./cpu(_ZN7QWidget5closeEb+0x253)[0x40552b]
/lib64/libc.so.6(__libc_start_main+0xf4)[0x36c4c1da44]
./cpu(_ZN7QWidget5closeEb+0xc1)[0x405399]
======= Memory map: ========
00400000-00407000 r-xp 00000000 08:03 622657 /DEMO/cpu/cpu
00607000-00608000 rw-p 00007000 08:03 622657 /DEMO/cpu/cpu
00608000-006aa000 rw-p 00608000 00:00 0 [heap]
36c4800000-36c481a000 r-xp 00000000 08:03 98887 /lib64/ld-2.5.so
36c4a19000-36c4a1a000 r--p 00019000 08:03 98887 /lib64/ld-2.5.so
36c4a1a000-36c4a1b000 rw-p 0001a000 08:03 98887 /lib64/ld-2.5.so
36c4c00000-36c4d44000 r-xp 00000000 08:03 98888 /lib64/libc-2.5.so
36c4d44000-36c4f44000 ---p 00144000 08:03 98888 /lib64/libc-2.5.so

/*********************************************************/


From the above meesage I feel that memory corruption is happening , But how to resolve this memory corruption.

Please help me .