I wrote a kde/qt project and it gives me with: valgrind -v --tool=callgrind ./kade this: unhandled instruction bytes: 0xF3 0x48 0xF 0xBD 0xC8 0xB8 using amd_64 platform gentoo-linux
vex amd64->IR: unhandled instruction bytes: 0xF3 0x48 0xF 0xBD 0xC8 0xB8 ==4932== valgrind: Unrecognised instruction at address 0x9f37ae7. ........ ==4932== Process terminating with default action of signal 4 (SIGILL) ==4932== Illegal opcode at address 0x9F37AE7 ==4932== at 0x9F37AE7: ??? (in /usr/lib64/libglib-2.0.so.0.2200.2) So i did a: objdump -d /usr/lib64/libglib-2.0.so.0.2200.2 | grep "f3 48 0f bd" and it gave me: 6622a: f3 48 0f bd c8 lzcnt %rax,%rcx 66ae7: f3 48 0f bd c8 lzcnt %rax,%rcx 8110a: f3 48 0f bd c7 lzcnt %rdi,%rax but nothing if I run with grep "f3 48 0f bd c8 b8" Maybe the above helps :-)
I tried to compile glib with -O2 and now it works but my app crashes with : vex amd64->IR: unhandled instruction bytes: 0xF3 0x41 0xF 0xB8 0x52 0xC and I cannot find anything in the executable file with objdump
I found the last bytes to be opcode: f3 41 0f b8 52 0c popcnt 0xc(%r10),%edx in /usr/lib64/libfontconfig.so.1.4.3
This bug occurs on my machine, too. Valgrind-3.5.0 and LibVEX vex amd64->IR: unhandled instruction bytes: 0xF3 0x48 0xF 0xBD 0xC8 0xB8 ==29709== Process terminating with default action of signal 4 (SIGILL) ==29709== Illegal opcode at address 0x818DFC0 ==29709== at 0x818DFC0: ??? (in /usr/lib64/libglib-2.0.so.0.2000.5) ==29709== by 0x818F688: g_slice_alloc (in /usr/lib64/libglib-2.0.so.0.2000.5) ==29709== by 0x814DEDC: g_array_sized_new (in /usr/lib64/libglib-2.0.so.0.2000.5) ==29709== by 0x819A2E8: g_static_private_set (in /usr/lib64/libglib-2.0.so.0.2000.5) ==29709== by 0x815AEC2: g_get_filename_charsets (in /usr/lib64/libglib-2.0.so.0.2000.5) ==29709== by 0x815AF2D: ??? (in /usr/lib64/libglib-2.0.so.0.2000.5) ==29709== by 0x819A55B: g_thread_init_glib (in /usr/lib64/libglib-2.0.so.0.2000.5) ==29709== by 0x7A69956: QEventDispatcherGlibPrivate::QEventDispatcherGlibPrivate(_GMainContext*) (in /usr/lib64/qt4/libQtCore.so.4.5.3) ==29709== by 0x57CDCAA: ??? (in /usr/lib64/qt4/libQtGui.so.4.5.3) ==29709== by 0x57CDD5F: ??? (in /usr/lib64/qt4/libQtGui.so.4.5.3) ==29709== by 0x579DE01: QApplicationPrivate::createEventDispatcher() (in /usr/lib64/qt4/libQtGui.so.4.5.3) ==29709== by 0x7A46B81: QCoreApplication::init() (in /usr/lib64/qt4/libQtCore.so.4.5.3) As in the first post, this is also a qt project, version is qt-4.5.3 glib version is 2.20.5 glib has been compiled using CFLAGS="-O2 -march=amdfam10 -pipe -fomit-frame-pointer"
I don't know is it related, but I have a similar problem with linuxdcpp: vex amd64->IR: unhandled instruction bytes: 0xF3 0x48 0xF 0xBD 0xC0 0x41 ==7924== valgrind: Unrecognised instruction at address 0x6e5ed48. ==7924== Process terminating with default action of signal 4 (SIGILL) ==7924== Illegal opcode at address 0x6E5ED48 ==7924== at 0x6E5ED48: slab_allocator_alloc_chunk (gutils.h:358) ==7924== by 0x6E5F4C2: g_slice_alloc (gslice.c:673) ==7924== by 0x6E1BEBC: g_array_sized_new (garray.c:187) ==7924== by 0x6E6ABD0: g_static_private_set (gthread.c:1697) ==7924== by 0x6E29E2A: g_get_filename_charsets (gconvert.c:1199) ==7924== by 0x6E29EAD: _g_convert_thread_init (gconvert.c:1304) ==7924== by 0x6E6B399: g_thread_init_glib (gthread.c:937) ==7924== by 0x5A5FAB: main (wulfor.cc:65) ==7924== Invalid free() / delete / delete[] ==7924== at 0x4C25A2D: free (vg_replace_malloc.c:325) ==7924== by 0x7740A3A: ??? (in /lib64/libc-2.12.1.so) ==7924== by 0x77405D1: ??? (in /lib64/libc-2.12.1.so) ==7924== by 0x4A2060C: _vgnU_freeres (vg_preloaded.c:62) ==7924== by 0x76C9B84: opendir (opendir.c:119) ==7924== by 0x4A9F60: ShareManager::buildTree(std::string const&, ShareManager::Directory* ) (ShareManager.cpp:587) ==7924== by 0x4AA6B0: ShareManager::buildTree(std::string const&, ShareManager::Directory* ) (ShareManager.cpp:696) ==7924== by 0x4AB0BA: ShareManager::run() (ShareManager.cpp:801) ==7924== by 0x4C9C89: Thread::starter(void*) (Thread.h:137) ==7924== by 0x4E32C39: start_thread (pthread_create.c:301) ==7924== by 0x76FDA9C: clone (clone.S:115) ==7924== Address 0x4061ed0 is not stack'd, malloc'd or (recently) free'd ==7924== AMD Athlon II x4 objdump -d /usr/lib64/libglib-2.0.so.0.2400.2 | grep "f3 48 0f bd" 5b5a8: f3 48 0f bd d2 lzcnt %rdx,%rdx 5bd48: f3 48 0f bd c0 lzcnt %rax,%rax 7390a: f3 48 0f bd ff lzcnt %rdi,%rdi Valgrind 3.5.0 CFLAGS="-march=amdfam10 -O2 -ggdb -pipe" CHOST="x86_64-pc-linux-gnu"
It is duplicate of bug 212335
*** This bug has been marked as a duplicate of bug 212335 ***