On Wed, 2017-01-04 at 13:43 +0100, frank_w...@web.de wrote: > Happy new year! > > > Am 08.12.2016 14:34 schrieb John Reiser: > > [...] > > Most of the time? Then run valgrind under gdb, get the traceback > > at the time of the SIGSEGV, and file a bug report against valgrind. > > $ gdb valgrind > > (gdb) run --tool=memcheck /path/to/the/smallest/program/which/fails > > SIGSEGV > > (gdb) bt > > > > > > It took some weeks until I found time to set things up, but now I have a > backtrace with the actual valgrind version (please ignore the python errors, > they exist only because of some mis-configuration of gdb build for the > target) - see below. > For me, this looks like there is an issue very early related to detection of > the hardware architecture - any idea? According to the above, your problem is a SIGSEGV. But the trace below is a SIGILL. I think that this last signal is used during hw detection. You should continue execution till you encounter the 'problematic' SIGSEGV. Note also that during execution, some 'normal' SIGSEGV are raised. On amd64, the bt looks like the below (in generated code).
Program received signal SIGSEGV, Segmentation fault. 0x0000000803646dae in ?? () (gdb) bt #0 0x0000000803646dae in ?? () #1 0x0000000802ea5f30 in ?? () #2 0x0000000802008390 in ?? () #3 0x0000000000405eaa in ?? () #4 0x0000000802008390 in ?? () #5 0x0000000000001c00 in ?? () #6 0x0000000000000000 in ?? () (gdb) Also, have you upgraded to 3.12, as suggested by John ? Do you have the same problem with the none tool ? Also, try with --read-inline-info=no Philippe > > best regards, > Frank > > > > --------------------------------------------------------------------------- > > > # gdb valgrind > Python Exception <type 'exceptions.ImportError'> No module named gdb: > gdb: warning: > Could not load the Python gdb module from `/usr/share/gdb/python'. > Limited Python support is available from the _gdb module. > Suggest passing --data-directory=/path/to/gdb/data-directory. > GNU gdb (GDB) 7.10.1 > Copyright (C) 2015 Free Software Foundation, Inc. > License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> > This is free software: you are free to change and redistribute it. > There is NO WARRANTY, to the extent permitted by law. Type "show copying" > and "show warranty" for details. > This GDB was configured as "arm-buildroot-linux-gnueabihf". > Type "show configuration" for configuration details. > For bug reporting instructions, please see: > <http://www.gnu.org/software/gdb/bugs/>. > Find the GDB manual and other documentation resources online at: > <http://www.gnu.org/software/gdb/documentation/>. > For help, type "help". > Type "apropos word" to search for commands related to "word"... > Reading symbols from valgrind...(no debugging symbols found)...done. > (gdb) run --tool=memcheck /usr/bin/FanCtrl > Starting program: /usr/bin/valgrind --tool=memcheck /usr/bin/FanCtrl > Python Exception <type 'exceptions.NameError'> Installation error: > gdb.execute_unwinders function is missing: > Python Exception <type 'exceptions.NameError'> Installation error: > gdb.execute_unwinders function is missing: > Python Exception <type 'exceptions.NameError'> Installation error: > gdb.execute_unwinders function is missing: > Python Exception <type 'exceptions.NameError'> Installation error: > gdb.execute_unwinders function is missing: > Python Exception <type 'exceptions.NameError'> Installation error: > gdb.execute_unwinders function is missing: > process 401 is executing new program: /usr/lib/valgrind/memcheck-arm-linux > Python Exception <type 'exceptions.NameError'> Installation error: > gdb.execute_unwinders function is missing: > Program received signal SIGILL, Illegal instruction. > 0x38051308 in vgPlain_machine_get_hwcaps () at m_machine.c:1608 > 1608 m_machine.c: No such file or directory. > (gdb) bt > Python Exception <type 'exceptions.NameError'> Installation error: > gdb.execute_unwinders function is missing: > Python Exception <type 'exceptions.ImportError'> No module named gdb.frames: > #0 0x38051308 in vgPlain_machine_get_hwcaps () at m_machine.c:1608 > #1 0x380527d0 in valgrind_main (envp=0xbeff6ca4, argv=0xbeff6c94, argc=3) at > m_main.c:1830 > Python Exception <type 'exceptions.NameError'> Installation error: > gdb.execute_unwinders function is missing: > #2 _start_in_C_linux (pArgc=0xbeff6c90) at m_main.c:3407 > #3 0x00000000 in ?? () > Python Exception <type 'exceptions.NameError'> Installation error: > gdb.execute_unwinders function is missing: > Backtrace stopped: previous frame identical to this frame (corrupt stack?) > > > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, SlashDot.org! http://sdm.link/slashdot > _______________________________________________ > Valgrind-users mailing list > Valgrind-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/valgrind-users ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Valgrind-users mailing list Valgrind-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/valgrind-users
