I use memprof-0.5.1.tar.gz (ubuntu 8.10)
./configure; make ; sudo makeinstall
gdb -args memprof a.out
(gdb) set follow-fork-mode child
(gdb) r
Starting program: /usr/local/bin/memprof ./a.out
[Thread debugging using libthread_db enabled]
[New Thread 0xb6cda960 (LWP 28442)]
[Thread debugging using libthread_db enabled]
[New Thread 0xb6cda960 (LWP 28445)]
[New process 28445]
Executing new program: /home/wangxuguang/a.out
warning: Cannot initialize thread debugging library: generic error
warning: Cannot initialize thread debugging library: generic error
[New process 28445]
memintercept (28445): _MEMPROF_SOCKET = /tmp/memprof.iotqZL
memintercept (28445): New process, operation = NEW, old_pid = 0
Program received signal SIGSEGV, Segmentation fault.
(gdb) bt
#0 0xb7f3392f in ?? () from /lib/ld-linux.so.2
#1 0xb7f3d8e7 in ?? () from /lib/ld-linux.so.2
#2 0xb7f39716 in ?? () from /lib/ld-linux.so.2
#3 0xb7f3d2ee in ?? () from /lib/ld-linux.so.2
#4 0xb7ecb0a2 in ?? () from /lib/tls/i686/cmov/libc.so.6
#5 0xb7f39716 in ?? () from /lib/ld-linux.so.2
#6 0xb7ecb265 in __libc_dlopen_mode () from /lib/tls/i686/cmov/libc.so.6
#7 0xb7ea53be in backtrace () from /lib/tls/i686/cmov/libc.so.6
#8 0xb7f275a3 in mi_call_with_backtrace (to_skip=2, callback=0xb7f265c2
<write_stack>, data=0xbf449678) at stack-frame.c:54
#9 0xb7f266fe in do_malloc (size=45, to_skip=1) at memintercept.c:354
#10 0xb7f26741 in malloc (size=45) at memintercept.c:369
#11 0xb7f39824 in ?? () from /lib/ld-linux.so.2
#12 0xb7f34236 in ?? () from /lib/ld-linux.so.2
#13 0xb7f3d8e7 in ?? () from /lib/ld-linux.so.2
#14 0xb7f39716 in ?? () from /lib/ld-linux.so.2
#15 0xb7f3d2ee in ?? () from /lib/ld-linux.so.2
#16 0xb7ecb0a2 in ?? () from /lib/tls/i686/cmov/libc.so.6
#17 0xb7f39716 in ?? () from /lib/ld-linux.so.2
#18 0xb7ecb265 in __libc_dlopen_mode () from /lib/tls/i686/cmov/libc.so.6
#19 0xb7ea53be in backtrace () from /lib/tls/i686/cmov/libc.so.6
#20 0xb7f275a3 in mi_call_with_backtrace (to_skip=2, callback=0xb7f265c2
<write_stack>, data=0xbf44a314) at stack-frame.c:54
#21 0xb7f266fe in do_malloc (size=45, to_skip=1) at memintercept.c:354
#22 0xb7f26741 in malloc (size=45) at memintercept.c:369
.....
# more than 3000
the source of a.out is :
int main ()
{
while (1)
{
malloc (100);
sleep (1);
printf ("aaaaaaaaaaaaaaaaaaaaaaa\n");
}
return 0;
}
I watch the source of memprof, the calling list is
--->domalloc --> mi_call_with_backtrace --> backtrace (in the c library it
call malloc)-----
|
|
|____________________________________________________________________________________________|
so the loop call causeing stack overflowing.
In memprof 0.4.1 the function "stack trace" doesnt's call "backtrace", it
compute stack frame by itself.
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