Re: [Qemu-devel] valgrind functionality in qemu?

[Sylvain Petreolle <spetreolle@yahoo.fr>]

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Talking about qemu and valgrind,
qemu immediately exits if you run it under valgrind.
I tried it with latest qemu CVS and valgrind 2.2.0.

Actual cmdline was :
valgrind --tool=memcheck --leak-check=yes qemu -boot d -cdrom /home/syl/qemu_images/tccboot.iso
(I attached the result)

> On Sat, 20 Nov 2004, Marc E. Fiuczynski wrote:
> 
> > Just curious whether anyone has thought about putting things like the
> > memory profiling, thread debugging, etc. features of valgrind
> > (http://valgrind.kde.org/) into qemu?!
> 

=====
Sylvain Petreolle (spetreolle_at_users_dot_sourceforge_dot_net)
humans are like computers,
yesterday the BIOS was all
- today its just a word

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==3247== Memcheck, a memory error detector for x86-linux.
==3247== Copyright (C) 2002-2004, and GNU GPL'd, by Julian Seward et al.
==3247== Using valgrind-2.2.0, a program supervision framework for x86-linux.
==3247== Copyright (C) 2000-2004, and GNU GPL'd, by Julian Seward et al.
==3247== For more details, rerun with: -v
==3247== 
==3247== Warning: set address range perms: large range 138739712, a 0, v 1
==3247== Syscall param write(buf) contains uninitialised or unaddressable byte(s)
==3247==    at 0x1BAB6723: __write_nocancel (in /lib/tls/libc-2.3.3.so)
==3247==    by 0x1BC2E12F: (within /usr/X11R6/lib/libX11.so.6.2)
==3247==    by 0x1BC2EECE: _X11TransWrite (in /usr/X11R6/lib/libX11.so.6.2)
==3247==    by 0x1BC0E721: (within /usr/X11R6/lib/libX11.so.6.2)
==3247==  Address 0x1BCCC30E is 14 bytes inside a block of size 16384 alloc'd
==3247==    at 0x1B9053FD: calloc (vg_replace_malloc.c:176)
==3247==    by 0x1BC0055D: XOpenDisplay (in /usr/X11R6/lib/libX11.so.6.2)
==3247==    by 0x1B994913: (within /usr/lib/libSDL-1.2.so.0.7.0)
==3247==    by 0x1B989E03: SDL_VideoInit (in /usr/lib/libSDL-1.2.so.0.7.0)
==3247== 
==3247== ERROR SUMMARY: 3 errors from 1 contexts (suppressed: 39 from 1)
==3247== malloc/free: in use at exit: 139106106 bytes in 354 blocks.
==3247== malloc/free: 1407 allocs, 1053 frees, 139234616 bytes allocated.
==3247== For counts of detected errors, rerun with: -v
==3247== searching for pointers to 354 not-freed blocks.
==3247== checked 19790712 bytes.
==3247== 
==3247== 
==3247== 8 bytes in 1 blocks are definitely lost in loss record 1 of 29
==3247==    at 0x1B9054EA: realloc (vg_replace_malloc.c:197)
==3247==    by 0x1BC50FF2: (within /usr/X11R6/lib/libX11.so.6.2)
==3247==    by 0x1BC5260E: (within /usr/X11R6/lib/libX11.so.6.2)
==3247==    by 0x1BC5341B: (within /usr/X11R6/lib/libX11.so.6.2)
==3247== 
==3247== LEAK SUMMARY:
==3247==    definitely lost: 8 bytes in 1 blocks.
==3247==    possibly lost:   0 bytes in 0 blocks.
==3247==    still reachable: 139105898 bytes in 352 blocks.
==3247==         suppressed: 200 bytes in 1 blocks.
==3247== Reachable blocks (those to which a pointer was found) are not shown.
==3247== To see them, rerun with: --show-reachable=yes