Hello All
I am trying to build a new tool using valgrind. I'm also trying to use mmap
system call to get huge memory block in my tool. When I use do_syscall in my
tool I get an error message like this. I tried several other calls (getpid,
etc) and every time I get this segmentation fault error.
===================================================================================================
--24479-- VALGRIND INTERNAL ERROR: Valgrind received a signal 11 (SIGSEGV) -
exiting
--24479-- si_code=1; Faulting address: 0x52; sp: 0x629a2dc0
valgrind: the 'impossible' happened:
Killed by fatal signal
==24479== at 0x38059A25: vgPlain_do_syscall (m_syscall.c:72)
==24479== by 0x3808E5E1: handle_syscall (scheduler.c:1057)
===================================================================================================
I tried to search for examples using system call in tools but it seems
they(memcheck, massif, lackey) don't use it.
My question is, is it allowed to use system call in a valgrind tool? Is it
recommended not to use system call? If it is allowed to use system call in a
tool, what should I do to make this thing work?
I use valgrind-3.8.0.SVN, and 32 bit Ubuntu 12.04, which is a VM.
Thank you,
Wonjoon Song
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