ragator segfaults
Russell Fulton
r.fulton at auckland.ac.nz
Thu Feb 3 23:15:57 EST 2005
hmmm... .debug does not seem to work any more. I nobbled the make files
in common and client to compile with symbols.
-bash-3.00$ gdb bin/ragator ragator.core
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This GDB was configured as "i386-unknown-openbsd3.6"...
Core was generated by `ragator'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /usr/lib/libm.so.2.0...done.
Loaded symbols for /usr/lib/libm.so.2.0
Reading symbols from /usr/lib/libc.so.34.1...done.
Loaded symbols for /usr/lib/libc.so.34.1
Reading symbols from /usr/libexec/ld.so...done.
Loaded symbols for /usr/libexec/ld.so
#0 0x1c02c973 in ArgusCalloc (nitems=1, size=124)
at ./argus_filter.c:5210
5210 *retn = 0x45672381;
(gdb) l
5205
5206 if (size) {
5207 ArgusCallocTotal++;
5208 retn = (unsigned int *) calloc (1, bytes + 4);
5209
5210 *retn = 0x45672381;
5211 retn++;
5212 }
5213
5214 #ifdef ARGUSDEBUG
(gdb) p retn
$1 = (unsigned int *) 0x0
So yes, it seems to be running out of memory get a lousy 4 byte int!
and the calloc return is not checked.
This is weird since the box has 300MB of free memory and the file I am
processing is about 15 MB.
Is it possible that the memory is being allocated out of some limited
kernel pool?
OS is OBSD 3.6
One more thing, it does work with file of under 10MB.
Russell.
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