Hi, I have an embedded linux system similar to the BeagleBone. It runs buildroot on it.
# uname -a Linux xenon 4.4.21 #1 PREEMPT Thu Dec 8 12:19:53 CET 2016 armv7l GNU/Linux Within the last days, I enabled valgrind in buildroot (version 3.11.0) to examine memory issues in some programs. Most of the time, when I start valgrind like this: # valgrind --tool=memcheck <path to my program> it exits with a segmentation fault. I tried different programs, small and big, but this does not really seem to make a difference. Most of the time, the output isn't really verbose: # valgrind --tool=memcheck /path/to/program ==470== Memcheck, a memory error detector ==470== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al. ==470== Using Valgrind-3.11.0 and LibVEX; rerun with -h for copyright info ==470== Command: /path/to/program ==470== Segmentation fault (core dumped) But sometimes I have crashes like this: # valgrind /path/to/otherprogram ==443== Memcheck, a memory error detector ==443== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al. ==443== Using Valgrind-3.11.0 and LibVEX; rerun with -h for copyright info ==443== Command: /path/to/otherprogram ==443== --443-- warning: DiCfSI 0x38012f58 .. 0x38952f73 is huge; length = 9699356 (NONE) --443-- DWARF2 CFI reader: unhandled CFI instruction 0:36 --443-- VALGRIND INTERNAL ERROR: Valgrind received a signal 11 (SIGSEGV) - exiting --443-- si_code=1; Faulting address: 0x4200D858; sp: 0x624b4da0 valgrind: the 'impossible' happened: Killed by fatal signal host stacktrace: ==443== at 0x38061360: vgPlain_allocEltPA (m_poolalloc.c:126) sched status: running_tid=1 Thread 1: status = VgTs_Runnable (lwpid 443) ==443== at 0x4019AA4: mmap (mmap.c:36) For me, it looks like an internal error. But perhaps I just missed some important setting to let valgrind run successfully? Any ideas? best regards, Frank ------------------------------------------------------------------------------ Developer Access Program for Intel Xeon Phi Processors Access to Intel Xeon Phi processor-based developer platforms. With one year of Intel Parallel Studio XE. Training and support from Colfax. Order your platform today.http://sdm.link/xeonphi _______________________________________________ Valgrind-users mailing list Valgrind-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/valgrind-users
