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From: Jim C. <cl...@cc...> - 2008-10-10 19:21:51
|
Hi,
I've written a tool that piggy backs onto of exp-ptrcheck and it seems
to be working pretty well. However, the tool is crashing when run on
several of the SPEC CINT2000 apps with the following error:
get_IntRegInfo(x86):failing on (13,1)
exp-ptrcheck: h_main.c:1350 (get_IntRegInfo): the 'impossible' happened.
It looks like there's a missing case (EBX+1) in the partial access to
integer register section. I added the following code at line 1314 in
h_main.c
if (o == GOF(EBX)+1 && is21) { o -= 1; o -= 0; goto contains_o; }
and it seems to fix the crash. Does that look correct? or is there
some other reason why this case was missing.
Thanks,
~Jim
|
|
From: Sérgio D. J. <ser...@li...> - 2008-10-10 18:51:47
|
Hi Bart, On Thu, 2008-10-09 at 08:23 +0200, Bart Van Assche wrote: > In the Valgrind trunk there are two thread error detection tools > present, namely Helgrind and DRD. Both support OpenMP. With regard to > OpenMP, DRD has the advantage that it works with unmodified GNU OpenMP > runtime source code. > > For instructions on how to build DRD and its documentation, see also > http://www.nabble.com/-ANNOUNCEMENT--DRD,-a-Thread-Error-Detector-td18336351.html Thanks a lot for this information! DRD seems a good tool for the job, indeed. But I have some questions. I've read the documentation that comes with the program (specially the OpenMP section), and tried to run some tests using DRD. These tests are very simple, and they are correct AFAIK. However, DRD reported some errors regarding printf() function. One of these errors is pasted below: ==31740== Conflicting load by thread 2/2 at 0x041930b8 size 4 ==31740== at 0x40A1C2D: vfprintf (in /lib/libc-2.6.1.so) ==31740== by 0x40AA9F2: printf (in /lib/libc-2.6.1.so) ==31740== by 0x80487F5: main.omp_fn.0 (omp_bug5fix.c:39) ==31740== by 0x402E7E7: gomp_thread_start (team.c:108) ==31740== by 0x402651E: vg_thread_wrapper (drd_pthread_intercepts.c:189) ==31740== by 0x405418A: start_thread (in /lib/libpthread-2.6.1.so) ==31740== by 0x412709D: clone (in /lib/libc-2.6.1.so) ==31740== Allocation context: BSS section of /lib/libc-2.6.1.so AFAIK, if I declare something private in OpenMP, it makes a copy of this variable for every thread running. The piece of code which DRD is telling that has a conflicting load is something like: ... int tid; #pragma omp parallel private(tid) { tid = omp_get_thread_num(); printf ("Thread %d\n", tid); ... } Please correct me if I'm wrong, but DRD should not complain about this, right? Can you provide me some light on why it's generating an error message for this code? There's a note on DRD documentation saying: Note: DRD reports errors on the libgomp library included with gcc 4.2.0 up to and including 4.3.1. This might indicate a race condition in the POSIX version of libgomp. But I think it's not the case in this sittuation, right? I'm really confused about it :-(. Thanks in advance, -- Sérgio Durigan Júnior Linux on Power Toolchain - Software Engineer Linux Technology Center - LTC IBM Brazil |
|
From: Tom H. <th...@cy...> - 2008-10-10 03:28:14
|
Nightly build on alvis ( i686, Red Hat 7.3 ) started at 2008-10-10 03:15:02 BST Results unchanged from 24 hours ago Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 366 tests, 80 stderr failures, 2 stdout failures, 29 post failures == exp-ptrcheck/tests/bad_percentify (stderr) exp-ptrcheck/tests/base (stderr) exp-ptrcheck/tests/ccc (stderr) exp-ptrcheck/tests/fp (stderr) exp-ptrcheck/tests/globalerr (stderr) exp-ptrcheck/tests/hackedbz2 (stderr) exp-ptrcheck/tests/hp_bounds (stderr) exp-ptrcheck/tests/hp_dangle (stderr) exp-ptrcheck/tests/justify (stderr) exp-ptrcheck/tests/partial_bad (stderr) exp-ptrcheck/tests/partial_good (stderr) exp-ptrcheck/tests/pth_create (stderr) exp-ptrcheck/tests/pth_specific (stderr) exp-ptrcheck/tests/realloc (stderr) exp-ptrcheck/tests/stackerr (stderr) exp-ptrcheck/tests/strcpy (stderr) exp-ptrcheck/tests/supp (stderr) exp-ptrcheck/tests/tricky (stderr) exp-ptrcheck/tests/unaligned (stderr) exp-ptrcheck/tests/zero (stderr) helgrind/tests/hg01_all_ok (stderr) helgrind/tests/hg02_deadlock (stderr) helgrind/tests/hg03_inherit (stderr) helgrind/tests/hg04_race (stderr) helgrind/tests/hg05_race2 (stderr) helgrind/tests/hg06_readshared (stderr) helgrind/tests/tc01_simple_race (stderr) helgrind/tests/tc02_simple_tls (stderr) helgrind/tests/tc03_re_excl (stderr) helgrind/tests/tc05_simple_race (stderr) helgrind/tests/tc06_two_races (stderr) helgrind/tests/tc07_hbl1 (stderr) helgrind/tests/tc08_hbl2 (stderr) helgrind/tests/tc09_bad_unlock (stderr) helgrind/tests/tc11_XCHG (stderr) helgrind/tests/tc12_rwl_trivial (stderr) helgrind/tests/tc14_laog_dinphils (stderr) helgrind/tests/tc16_byterace (stderr) helgrind/tests/tc17_sembar (stderr) helgrind/tests/tc18_semabuse (stderr) helgrind/tests/tc19_shadowmem (stderr) helgrind/tests/tc20_verifywrap (stderr) helgrind/tests/tc21_pthonce (stderr) helgrind/tests/tc22_exit_w_lock (stderr) helgrind/tests/tc23_bogus_condwait (stderr) helgrind/tests/tc24_nonzero_sem (stderr) massif/tests/alloc-fns-A (post) massif/tests/alloc-fns-B (post) massif/tests/basic (post) massif/tests/basic2 (post) massif/tests/big-alloc (post) massif/tests/culling1 (stderr) massif/tests/culling2 (stderr) massif/tests/custom_alloc (post) massif/tests/deep-A (post) massif/tests/deep-B (stderr) massif/tests/deep-B (post) massif/tests/deep-C (stderr) massif/tests/deep-C (post) massif/tests/deep-D (post) massif/tests/ignoring (post) massif/tests/insig (post) massif/tests/long-names (post) massif/tests/long-time (post) massif/tests/new-cpp (post) massif/tests/null (post) massif/tests/one (post) massif/tests/overloaded-new (post) massif/tests/peak (post) massif/tests/peak2 (stderr) massif/tests/peak2 (post) massif/tests/realloc (stderr) massif/tests/realloc (post) massif/tests/thresholds_0_0 (post) massif/tests/thresholds_0_10 (post) massif/tests/thresholds_10_0 (post) massif/tests/thresholds_10_10 (post) massif/tests/thresholds_5_0 (post) massif/tests/thresholds_5_10 (post) massif/tests/zero1 (post) massif/tests/zero2 (post) memcheck/tests/file_locking (stderr) memcheck/tests/leak-0 (stderr) memcheck/tests/leak-cycle (stderr) memcheck/tests/leak-regroot (stderr) memcheck/tests/leak-tree (stderr) memcheck/tests/long_namespace_xml (stderr) memcheck/tests/malloc_free_fill (stderr) memcheck/tests/origin1-yes (stderr) memcheck/tests/origin4-many (stderr) memcheck/tests/origin5-bz2 (stderr) memcheck/tests/pointer-trace (stderr) memcheck/tests/stack_changes (stderr) memcheck/tests/varinfo1 (stderr) memcheck/tests/varinfo2 (stderr) memcheck/tests/varinfo3 (stderr) memcheck/tests/varinfo4 (stderr) memcheck/tests/varinfo5 (stderr) memcheck/tests/varinfo6 (stderr) memcheck/tests/x86/bug152022 (stderr) memcheck/tests/x86/scalar (stderr) memcheck/tests/x86/scalar_supp (stderr) memcheck/tests/x86/xor-undef-x86 (stderr) memcheck/tests/xml1 (stderr) none/tests/blockfault (stderr) none/tests/cmdline2 (stdout) none/tests/mremap2 (stdout) none/tests/shell (stderr) none/tests/shell_valid1 (stderr) none/tests/shell_valid2 (stderr) none/tests/shell_valid3 (stderr) |
|
From: Tom H. <th...@cy...> - 2008-10-10 03:04:48
|
Nightly build on lloyd ( x86_64, Fedora 7 ) started at 2008-10-10 03:05:07 BST Results unchanged from 24 hours ago Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 460 tests, 11 stderr failures, 3 stdout failures, 0 post failures == exp-ptrcheck/tests/base (stderr) exp-ptrcheck/tests/ccc (stderr) exp-ptrcheck/tests/pth_create (stderr) exp-ptrcheck/tests/pth_specific (stderr) helgrind/tests/tc20_verifywrap (stderr) helgrind/tests/tc22_exit_w_lock (stderr) memcheck/tests/file_locking (stderr) memcheck/tests/malloc_free_fill (stderr) memcheck/tests/pointer-trace (stderr) memcheck/tests/vcpu_fnfns (stdout) memcheck/tests/x86/scalar (stderr) none/tests/blockfault (stderr) none/tests/cmdline2 (stdout) none/tests/mremap2 (stdout) |
|
From: Tom H. <th...@cy...> - 2008-10-10 02:47:35
|
Nightly build on trojan ( x86_64, Fedora Core 6 ) started at 2008-10-10 03:25:04 BST Results unchanged from 24 hours ago Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 464 tests, 13 stderr failures, 5 stdout failures, 0 post failures == exp-ptrcheck/tests/ccc (stderr) exp-ptrcheck/tests/pth_create (stderr) exp-ptrcheck/tests/pth_specific (stderr) helgrind/tests/tc17_sembar (stderr) helgrind/tests/tc20_verifywrap (stderr) helgrind/tests/tc21_pthonce (stderr) helgrind/tests/tc22_exit_w_lock (stderr) memcheck/tests/file_locking (stderr) memcheck/tests/malloc_free_fill (stderr) memcheck/tests/pointer-trace (stderr) memcheck/tests/vcpu_fnfns (stdout) memcheck/tests/x86/bug133694 (stdout) memcheck/tests/x86/bug133694 (stderr) memcheck/tests/x86/scalar (stderr) none/tests/blockfault (stderr) none/tests/cmdline1 (stdout) none/tests/cmdline2 (stdout) none/tests/mremap2 (stdout) |
|
From: Tom H. <th...@cy...> - 2008-10-10 02:27:35
|
Nightly build on gill ( x86_64, Fedora Core 2 ) started at 2008-10-10 03:00:02 BST Results unchanged from 24 hours ago Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 466 tests, 34 stderr failures, 4 stdout failures, 0 post failures == drd/tests/pth_cancel_locked (stderr) exp-ptrcheck/tests/ccc (stderr) exp-ptrcheck/tests/hackedbz2 (stderr) helgrind/tests/hg01_all_ok (stderr) helgrind/tests/hg02_deadlock (stderr) helgrind/tests/hg03_inherit (stderr) helgrind/tests/hg04_race (stderr) helgrind/tests/hg05_race2 (stderr) helgrind/tests/tc01_simple_race (stderr) helgrind/tests/tc05_simple_race (stderr) helgrind/tests/tc06_two_races (stderr) helgrind/tests/tc09_bad_unlock (stderr) helgrind/tests/tc14_laog_dinphils (stderr) helgrind/tests/tc16_byterace (stderr) helgrind/tests/tc17_sembar (stderr) helgrind/tests/tc19_shadowmem (stderr) helgrind/tests/tc20_verifywrap (stderr) helgrind/tests/tc21_pthonce (stderr) helgrind/tests/tc22_exit_w_lock (stderr) helgrind/tests/tc23_bogus_condwait (stderr) memcheck/tests/file_locking (stderr) memcheck/tests/malloc_free_fill (stderr) memcheck/tests/origin5-bz2 (stderr) memcheck/tests/pointer-trace (stderr) memcheck/tests/stack_switch (stderr) memcheck/tests/varinfo6 (stderr) memcheck/tests/x86/scalar (stderr) memcheck/tests/x86/scalar_supp (stderr) none/tests/amd64/insn_ssse3 (stdout) none/tests/amd64/insn_ssse3 (stderr) none/tests/amd64/ssse3_misaligned (stderr) none/tests/blockfault (stderr) none/tests/cmdline2 (stdout) none/tests/fdleak_fcntl (stderr) none/tests/mremap2 (stdout) none/tests/x86/insn_ssse3 (stdout) none/tests/x86/insn_ssse3 (stderr) none/tests/x86/ssse3_misaligned (stderr) |