Re: [perfmon2] segmentation fault while running pfmon

Qingyuan Deng Thu, 24 Sep 2009 13:22:14 -0700

Yes. It crashed.

qd...@qdeng-desktop:~/pmu/perfmon2/libpfm-3.9/examples_v2.x$ ./self
sycall base 333
major version 2
minor version 82
Segmentation fault



On Thu, Sep 24, 2009 at 4:18 PM, stephane eranian <eran...@googlemail.com>wrote:

> What about you try libpfm/examples_v2.x/self.
> Does it crash too?
>
>
> On Thu, Sep 24, 2009 at 10:13 PM, Qingyuan Deng <ddq...@gmail.com> wrote:
> > Hi Stephane,
> > Do you mean mean the i value in "for(i =0; i <pfm_current->pme_count;
> i++) "
> > in pfmlib_common.c?
> >
> > Then it is 0 while the program stops.
> >
> > Thanks!
> > --------------------------------------------------------------------
> > (gdb) b 1899
> > Breakpoint 1 at 0x804ead1: file pfmon.c, line 1899.
> > (gdb) r --help
> > Starting program: /usr/local/bin/pfmon --help
> > [Thread debugging using libthread_db enabled]
> > [New Thread 0xb7de48d0 (LWP 20951)]
> > [Switching to Thread 0xb7de48d0 (LWP 20951)]
> >
> > Breakpoint 1, main (argc=2, argv=0xbf841dc4) at pfmon.c:1900
> > 1900        pfmon_initialize(argv);
> > (gdb) s
> > pfmon_initialize (argv=0xbf841dc4) at pfmon.c:1387
> > 1387        pfmon_get_version();
> > (gdb) n
> > 1389        ret = pfmon_api_probe();
> > (gdb) n
> > 1390        if (ret) {
> > (gdb) n
> > 1402        if (options.pfm_version != PERFMON_VERSION_20)
> > (gdb) n
> > 1403            options.opt_has_sets = 1;
> > (gdb) n
> > 1408        pfmon_arch_initialize();
> > (gdb) n
> > 1410        setup_common_signals();
> > (gdb) n
> > 1413        if (pfm_initialize() != PFMLIB_SUCCESS)
> > (gdb) n
> > 1416        pfm_get_version(&version);
> > (gdb) n
> > 1417        if (PFM_VERSION_MAJOR(version) < 3 ||
> PFM_VERSION_MINOR(version)
> > < 2)
> > (gdb) n
> > 1421        options.arg_mem_max = pfmon_get_perfmon_arg_mem_max();
> > (gdb) n
> > 1423        ret = pfm_get_pmu_type(&options.pmu_type);
> > (gdb) n
> > 1424        if (ret != PFMLIB_SUCCESS) {
> > (gdb) n
> > 1428        ret = pfm_get_num_counters(&options.max_counters);
> > (gdb) n
> > 1429        if (ret != PFMLIB_SUCCESS) {
> > (gdb) n
> > 1433        if (check_forced_generic(argv[0])) {
> > (gdb) n
> > 1442        pfmon_detect();
> > (gdb) n
> > 1444        options.session_timeout = PFMON_NO_TIMEOUT;
> > (gdb) n
> > 1445        options.interval = PFMON_NO_TIMEOUT;
> > (gdb) n
> > 1450        long_val = sysconf(_SC_NPROCESSORS_ONLN);
> > (gdb) n
> > 1451        if (long_val == -1)
> > (gdb) n
> > 1454        options.online_cpus = long_val;
> > (gdb) n
> > 1456        long_val = sysconf(_SC_NPROCESSORS_CONF);
> > (gdb) n
> > 1457        if (long_val == -1)
> > (gdb) n
> > 1460        options.config_cpus = long_val;
> > (gdb) n
> > 1462        pfmon_get_phys_cpu_mask();
> > (gdb) n
> > 1464        clock_getres(CLOCK_MONOTONIC, &ts);
> > (gdb) n
> > 1465        options.clock_res  = ts.tv_sec * 1000000000 + ts.tv_nsec;
> > (gdb) n
> > 1466        options.page_size  = getpagesize();
> > (gdb) n
> > 1467        options.cpu_mhz    = pfmon_find_cpu_speed();
> > (gdb) n
> > 1469        pfm_get_max_event_name_len(&len);
> > (gdb) s
> > pfm_get_max_event_name_len (len=0xbf841cc0) at pfmlib_common.c:907
> > 907        if (PFMLIB_INITIALIZED() == 0)
> > (gdb) n
> > 909        if (len == NULL)
> > (gdb) n
> > 912        for(i=0; i < pfm_current->pme_count; i++) {
> > (gdb) n
> > 913            str = pfm_current->get_event_name(i);
> > (gdb) p i
> > $1 = 0
> > (gdb) n
> > 914            if (!str)
> > (gdb) n
> > 916            l = strlen(str);
> > (gdb) n
> >
> > Program received signal SIGSEGV, Segmentation fault.
> > 0xb7e5c613 in strlen () from /lib/tls/i686/cmov/libc.so.6
> > (gdb)
> >
> >
> > On Thu, Sep 24, 2009 at 4:20 AM, stephane eranian <
> eran...@googlemail.com>
> > wrote:
> >>
> >> On Thu, Sep 24, 2009 at 9:29 AM, Qingyuan Deng <ddq...@gmail.com>
> wrote:
> >> > I tracked into the program and found the segmentation fault happened
> at:
> >> >
> >> > in pfmon.c
> >> > pfmon_initialize()->pfm_get_max_event_name_len(&len)
> >> >
> >> > then it jumped into pfmlib_common.c
> >> >
> >> > pfm_get_max_event_name_len (len=0xbffd9460) at pfmlib_common.c:907
> >> > 907        if (PFMLIB_INITIALIZED() == 0)
> >> > (gdb) n
> >> > 909        if (len == NULL)
> >> > (gdb) n
> >> > 912        for(i=0; i < pfm_current->pme_count; i++) {
> >> > (gdb) n
> >> > 913            str = pfm_current->get_event_name(i);
> >> > (gdb) n
> >> > 914            if (!str)
> >> > (gdb) n
> >> > 916            l = strlen(str);
> >> > (gdb) n
> >> >
> >> > Program received signal SIGSEGV, Segmentation fault.
> >> > 0xb7ef5613 in strlen () from /lib/tls/i686/cmov/libc.so.6
> >> >
> >> > Here is the backtrace:
> >> >
> >> > Program received signal SIGSEGV, Segmentation fault.
> >> > [Switching to Thread 0xb7e7a8d0 (LWP 5257)]
> >> > 0xb7ef2613 in strlen () from /lib/tls/i686/cmov/libc.so.6
> >> > (gdb) backtrace
> >> > #0  0xb7ef2613 in strlen () from /lib/tls/i686/cmov/libc.so.6
> >> > #1  0xb7fed411 in pfm_get_max_event_name_len (len=0xbf8d5d60)
> >> >     at pfmlib_common.c:916
> >> > #2  0x0804dd45 in pfmon_initialize (argv=0xbf8d5e64) at pfmon.c:1469
> >> > #3  0x0804eadf in main (argc=1, argv=0xbf8d5e64) at pfmon.c:1900
> >> > (gdb)
> >>
> >>
> >> I have seen this problem on an other machine as well. But I don't
> remember
> >> what
> >> the cause was. It has to do with the event table.
> >> Could you print the value of i (the event index) so we know where it
> >> stops?
> >>
> >> >
> >> > On Thu, Sep 24, 2009 at 3:25 AM, stephane eranian
> >> > <eran...@googlemail.com>
> >> > wrote:
> >> >>
> >> >> What does ldd pfmon say?
> >> >>
> >> >>
> >> >> On Thu, Sep 24, 2009 at 9:01 AM, Qingyuan Deng <ddq...@gmail.com>
> >> >> wrote:
> >> >> > Hello,
> >> >> >
> >> >> > I patched the kernel and installed both libpfm and perfmon, however
> I
> >> >> > got
> >> >> > segmentation fault while I tried running command: "pfmon --help'.
> >> >> > Could
> >> >> > anyone help me to figure it out please?
> >> >> >
> >> >> > I am running Ubuntu 9.04 on kernel 2.6.29. I downloaded the latest
> >> >> > version
> >> >> > of libpfm, perfmon, and the base system patch from the sourceforge
> >> >> > page.
> >> >> > My
> >> >> > processor is Intel core i7 920 and I adjusted related configuration
> >> >> > when
> >> >> > I
> >> >> > configured the kernel.  Following is the debug message from gdb:
> >> >> >
> >> >> >
> >> >> > qd...@qdeng-desktop:~/pmu/perfmon2/pfmon-3.9$ sudo make install
> >> >> > [sudo] password for qdeng:
> >> >> > make[1]: Entering directory
> >> >> > `/home/qdeng/pmu/perfmon2/pfmon-3.9/pfmon'
> >> >> > make[2]: Entering directory
> >> >> > `/home/qdeng/pmu/perfmon2/pfmon-3.9/pfmon/smpl_mod'
> >> >> > make[2]: Nothing to be done for `all'.
> >> >> > make[2]: Leaving directory
> >> >> > `/home/qdeng/pmu/perfmon2/pfmon-3.9/pfmon/smpl_mod'
> >> >> > cc -o pfmon pfmon.o pfmon_smpl.o pfmon_util.o pfmon_system.o
> >> >> > pfmon_task.o
> >> >> > pfmon_symbols.o pfmon_results.o pfmon_hash.o pfmon_smpl_dfl.o
> >> >> > pfmon_os.o
> >> >> > pfmon_os_v2x.o pfmon_util_x86.o pfmon_i386_p6.o pfmon_gen_ia32.o
> >> >> > pfmon_amd64.o pfmon_core.o pfmon_intel_atom.o pfmon_intel_nhm.o
> >> >> > pfmon_pentium4.o  -g -ggdb -Wall -Werror -D_REENTRANT
> >> >> > -I/usr/local/include
> >> >> > -DCONFIG_PFMON_I386 -DPFMON_DEBUG
> >> >> > -DDATADIR=\"/usr/local/share/pfmon\"
> >> >> > -I.
> >> >> > -I/usr/include/libelf -D_GNU_SOURCE -DPFMON_DEBUG -g
> >> >> > smpl_mod/libsmplfmt.a
> >> >> > -lpthread -lm -lrt -Wl,-Bstatic -lelf -Wl,-Bdynamic
> -L/usr/local/lib
> >> >> > -lpfm
> >> >> > mkdir -p /usr/local/bin
> >> >> > install -m 755 pfmon /usr/local/bin/pfmon
> >> >> > ln -sf /usr/local/bin/pfmon /usr/local/bin/pfmon_gen
> >> >> > make[1]: Leaving directory
> `/home/qdeng/pmu/perfmon2/pfmon-3.9/pfmon'
> >> >> > make[1]: Entering directory
> >> >> > `/home/qdeng/pmu/perfmon2/pfmon-3.9/tests'
> >> >> > mkdir -p /usr/local/bin
> >> >> > install -m 755 pfdbg /usr/local/bin/pfdbg
> >> >> > make[1]: Leaving directory
> `/home/qdeng/pmu/perfmon2/pfmon-3.9/tests'
> >> >> > make[1]: Entering directory
> `/home/qdeng/pmu/perfmon2/pfmon-3.9/docs'
> >> >> > mkdir -p /usr/local/share/man/man1
> >> >> > install -m 644 pfmon.1 /usr/local/share/man/man1
> >> >> > make[1]: Leaving directory
> `/home/qdeng/pmu/perfmon2/pfmon-3.9/docs'
> >> >> > qd...@qdeng-desktop:~/pmu/perfmon2/pfmon-3.9$ pfmon --help
> >> >> > Segmentation fault
> >> >> > qd...@qdeng-desktop:~/pmu/perfmon2/pfmon-3.9$ gdb pfmon
> >> >> > GNU gdb 6.8-debian
> >> >> > Copyright (C) 2008 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 "i486-linux-gnu"...
> >> >> > (gdb) run --help
> >> >> > Starting program: /usr/local/bin/pfmon --help
> >> >> > [Thread debugging using libthread_db enabled]
> >> >> > [New Thread 0xb7e598d0 (LWP 4437)]
> >> >> >
> >> >> > Program received signal SIGSEGV, Segmentation fault.
> >> >> > [Switching to Thread 0xb7e598d0 (LWP 4437)]
> >> >> > 0xb7ed1613 in strlen () from /lib/tls/i686/cmov/libc.so.6
> >> >> > (gdb)
> >> >> >
> >> >> > Thanks!
> >> >> > Qingyuan
> >> >> >
> >> >> >
> >> >> >
> >> >> >
> ------------------------------------------------------------------------------
> >> >> > Come build with us! The BlackBerry&reg; Developer Conference in SF,
> >> >> > CA
> >> >> > is the only developer event you need to attend this year. Jumpstart
> >> >> > your
> >> >> > developing skills, take BlackBerry mobile applications to market
> and
> >> >> > stay
> >> >> > ahead of the curve. Join us from November 9&#45;12, 2009. Register
> >> >> > now&#33;
> >> >> > http://p.sf.net/sfu/devconf
> >> >> > _______________________________________________
> >> >> > perfmon2-devel mailing list
> >> >> > perfmon2-devel@lists.sourceforge.net
> >> >> > https://lists.sourceforge.net/lists/listinfo/perfmon2-devel
> >> >> >
> >> >> >
> >> >
> >> >
> >
> >
>

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Re: [perfmon2] segmentation fault while running pfmon

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