Yes. It crashed.

qdeng@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 <eranian@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 <ddqqyy@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 <eranian@googlemail.com>
> wrote:
>>
>> On Thu, Sep 24, 2009 at 9:29 AM, Qingyuan Deng <ddqqyy@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
>> > <eranian@googlemail.com>
>> > wrote:
>> >>
>> >> What does ldd pfmon say?
>> >>
>> >>
>> >> On Thu, Sep 24, 2009 at 9:01 AM, Qingyuan Deng <ddqqyy@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:
>> >> >
>> >> >
>> >> > qdeng@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'
>> >> > qdeng@qdeng-desktop:~/pmu/perfmon2/pfmon-3.9$ pfmon --help
>> >> > Segmentation fault
>> >> > qdeng@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
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>> >> > developing skills, take BlackBerry mobile applications to market and
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>> >> > ahead of the curve. Join us from November 9&#45;12, 2009. Register
>> >> > now&#33;
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>> >> > _______________________________________________
>> >> > perfmon2-devel mailing list
>> >> > perfmon2-devel@lists.sourceforge.net
>> >> > https://lists.sourceforge.net/lists/listinfo/perfmon2-devel
>> >> >
>> >> >
>> >
>> >
>
>