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From: Nicholas N. <nj...@cs...> - 2008-03-26 21:38:43
|
On Wed, 26 Mar 2008, Bart Van Assche wrote: > After having commented out the VG_(needs_var_info)() call in exp-drd, > I can run Firefox 3 under exp-drd. Is there much scope for compacting the var info, Julian? N |
|
From: Bart V. A. <bar...@gm...> - 2008-03-26 17:52:55
|
On Mon, Mar 3, 2008 at 12:51 AM, Julian Seward <js...@ac...> wrote: > > * VG_(needs_var_info) has been added Hello Julian, Although I still consider it as a great feature that it is now possible in Valgrind tools to obtain detailed information about variables, I will disable this by default in exp-drd. The problem is that reading all the variable info at once in memory takes up a lot of space. E.g. for Firefox 3 more than 2 GB is needed to read in all variables. My PC does not have so much memory. After having commented out the VG_(needs_var_info)() call in exp-drd, I can run Firefox 3 under exp-drd. Bart. |
|
From: <sv...@va...> - 2008-03-26 17:39:57
|
Author: bart
Date: 2008-03-26 17:39:52 +0000 (Wed, 26 Mar 2008)
New Revision: 7792
Log:
Added support for --trace-malloc.
Modified:
trunk/exp-drd/drd_main.c
Modified: trunk/exp-drd/drd_main.c
===================================================================
--- trunk/exp-drd/drd_main.c 2008-03-25 20:18:40 UTC (rev 7791)
+++ trunk/exp-drd/drd_main.c 2008-03-26 17:39:52 UTC (rev 7792)
@@ -48,8 +48,10 @@
#include "pub_tool_libcproc.h"
#include "pub_tool_machine.h"
#include "pub_tool_options.h" // command line options
+#include "pub_tool_replacemalloc.h"
#include "pub_tool_threadstate.h" // VG_(get_running_tid)()
#include "pub_tool_tooliface.h"
+#include "pub_tool_replacemalloc.h"
// Function declarations.
@@ -102,7 +104,7 @@
else VG_BOOL_CLO(arg, "--trace-suppression", trace_suppression)
else VG_STR_CLO (arg, "--trace-address", trace_address)
else
- return False;
+ return VG_(replacement_malloc_process_cmd_line_option)(arg);
if (segment_merging != -1)
thread_set_segment_merging(segment_merging);
|
|
From: Nuno L. <nun...@sa...> - 2008-03-26 15:38:39
|
>>>> 20 movl 0x2A8(%ebp),%edx ; load %vr30 from memory >>>> 21 andl $0xFFFF,%edx >>>> 22 movl 0x2A8(%ebp),%edx ; <-- %vr30 is in %edx, not in memory >>>> 23 movl %edi,%eax >>>> 24 call[2] 0x38006C30 >>>> >>>> So the problem is that the register allocator gets confused somehow and >>>> loads %vr30 twice, destroying its value (i.e. the line 22 is bogus and >>>> could be removed altogether). >>> >>> That's very strange. After the reload on line 20, it should indeed >>> have noted that %vr30 is now in %edx, so then there would be no need >>> to incorrectly reload it again at line 22. I have no idea why. >> >> So well, any idea on how to debug that problem? I have zero knowledge >> about >> register allocation algorithms, hence my relutance to get my hands on >> it.. > > So this patch almost fixes the problem: > http://web.ist.utl.pt/nuno.lopes/vex_regalloc_mov_vr.txt > It removes mov instructions between a virtual register and a real > register, > as long as the virtual register is mapped to the real register. But then > it > fails the sanity check at line 939 (rreg_state[k].disp == Unavail) for the > rreg of the previous mov instruction we had just skip. > So, the idea seems ok, but the patch needs some work to fix that > assertion. > Julian, could you take a look at it, please? never mind. I've already discovered the problem and updated the patch accordingly (link above). Can you please check if the patch is ok (and commit it if it's ok)? Thanks, Nuno |
|
From: Nuno L. <nun...@sa...> - 2008-03-26 13:23:35
|
>>> 20 movl 0x2A8(%ebp),%edx ; load %vr30 from memory >>> 21 andl $0xFFFF,%edx >>> 22 movl 0x2A8(%ebp),%edx ; <-- %vr30 is in %edx, not in memory >>> 23 movl %edi,%eax >>> 24 call[2] 0x38006C30 >>> >>> So the problem is that the register allocator gets confused somehow and >>> loads %vr30 twice, destroying its value (i.e. the line 22 is bogus and >>> could be removed altogether). >> >> That's very strange. After the reload on line 20, it should indeed >> have noted that %vr30 is now in %edx, so then there would be no need >> to incorrectly reload it again at line 22. I have no idea why. > > So well, any idea on how to debug that problem? I have zero knowledge > about > register allocation algorithms, hence my relutance to get my hands on it.. So this patch almost fixes the problem: http://web.ist.utl.pt/nuno.lopes/vex_regalloc_mov_vr.txt It removes mov instructions between a virtual register and a real register, as long as the virtual register is mapped to the real register. But then it fails the sanity check at line 939 (rreg_state[k].disp == Unavail) for the rreg of the previous mov instruction we had just skip. So, the idea seems ok, but the patch needs some work to fix that assertion. Julian, could you take a look at it, please? Thanks, Nuno ------------------- output of regalloc showing the bug: ====----====---- Insn 15 ----====----==== ---- movl %vr30,%edx Initial state: rreg_state[ 0] = %eax Free rreg_state[ 1] = %ebx BoundTo %vr8 rreg_state[ 2] = %ecx Free rreg_state[ 3] = %edx BoundTo %vr30 rreg_state[ 4] = %esi BoundTo %vr68 rreg_state[ 5] = %edi BoundTo %vr1 rreg_state[ 6] = %fake0 Free rreg_state[ 7] = %fake1 Free rreg_state[ 8] = %fake2 Free rreg_state[ 9] = %fake3 Free rreg_state[10] = %fake4 Free rreg_state[11] = %fake5 Free rreg_state[12] = %xmm0 Free rreg_state[13] = %xmm1 Free rreg_state[14] = %xmm2 Free rreg_state[15] = %xmm3 Free rreg_state[16] = %xmm4 Free rreg_state[17] = %xmm5 Free rreg_state[18] = %xmm6 Free rreg_state[19] = %xmm7 Free vreg_state[0 .. 77]: [1] -> 5 [8] -> 1 [30] -> 3 [68] -> 4 need to free up rreg: %edx After pre-insn actions for fixed regs: rreg_state[ 0] = %eax Free rreg_state[ 1] = %ebx BoundTo %vr8 rreg_state[ 2] = %ecx Free rreg_state[ 3] = %edx Unavail rreg_state[ 4] = %esi BoundTo %vr68 rreg_state[ 5] = %edi BoundTo %vr1 rreg_state[ 6] = %fake0 Free rreg_state[ 7] = %fake1 Free rreg_state[ 8] = %fake2 Free rreg_state[ 9] = %fake3 Free rreg_state[10] = %fake4 Free rreg_state[11] = %fake5 Free rreg_state[12] = %xmm0 Free rreg_state[13] = %xmm1 Free rreg_state[14] = %xmm2 Free rreg_state[15] = %xmm3 Free rreg_state[16] = %xmm4 Free rreg_state[17] = %xmm5 Free rreg_state[18] = %xmm6 Free rreg_state[19] = %xmm7 Free vreg_state[0 .. 77]: [1] -> 5 [8] -> 1 [68] -> 4 ** movl 0x2A8(%ebp),%edx After dealing with current insn: rreg_state[ 0] = %eax Free rreg_state[ 1] = %ebx BoundTo %vr8 rreg_state[ 2] = %ecx Free rreg_state[ 3] = %edx Unavail rreg_state[ 4] = %esi BoundTo %vr68 rreg_state[ 5] = %edi BoundTo %vr1 rreg_state[ 6] = %fake0 Free rreg_state[ 7] = %fake1 Free rreg_state[ 8] = %fake2 Free rreg_state[ 9] = %fake3 Free rreg_state[10] = %fake4 Free rreg_state[11] = %fake5 Free rreg_state[12] = %xmm0 Free rreg_state[13] = %xmm1 Free rreg_state[14] = %xmm2 Free rreg_state[15] = %xmm3 Free rreg_state[16] = %xmm4 Free rreg_state[17] = %xmm5 Free rreg_state[18] = %xmm6 Free rreg_state[19] = %xmm7 Free vreg_state[0 .. 77]: [1] -> 5 [8] -> 1 [68] -> 4 After post-insn actions for fixed regs: rreg_state[ 0] = %eax Free rreg_state[ 1] = %ebx BoundTo %vr8 rreg_state[ 2] = %ecx Free rreg_state[ 3] = %edx Unavail rreg_state[ 4] = %esi BoundTo %vr68 rreg_state[ 5] = %edi BoundTo %vr1 rreg_state[ 6] = %fake0 Free rreg_state[ 7] = %fake1 Free rreg_state[ 8] = %fake2 Free rreg_state[ 9] = %fake3 Free rreg_state[10] = %fake4 Free rreg_state[11] = %fake5 Free rreg_state[12] = %xmm0 Free rreg_state[13] = %xmm1 Free rreg_state[14] = %xmm2 Free rreg_state[15] = %xmm3 Free rreg_state[16] = %xmm4 Free rreg_state[17] = %xmm5 Free rreg_state[18] = %xmm6 Free rreg_state[19] = %xmm7 Free vreg_state[0 .. 77]: [1] -> 5 [8] -> 1 [68] -> 4 |
|
From: Tom H. <th...@cy...> - 2008-03-26 06:01:57
|
Nightly build on alvis ( i686, Red Hat 7.3 ) started at 2008-03-26 03:15:25 GMT 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 == 330 tests, 76 stderr failures, 1 stdout failure, 29 post failures == memcheck/tests/addressable (stderr) memcheck/tests/badjump (stderr) memcheck/tests/describe-block (stderr) memcheck/tests/erringfds (stderr) memcheck/tests/leak-0 (stderr) memcheck/tests/leak-cycle (stderr) memcheck/tests/leak-pool-0 (stderr) memcheck/tests/leak-pool-1 (stderr) memcheck/tests/leak-pool-2 (stderr) memcheck/tests/leak-pool-3 (stderr) memcheck/tests/leak-pool-4 (stderr) memcheck/tests/leak-pool-5 (stderr) memcheck/tests/leak-regroot (stderr) memcheck/tests/leak-tree (stderr) memcheck/tests/long_namespace_xml (stderr) memcheck/tests/lsframe1 (stderr) memcheck/tests/lsframe2 (stderr) memcheck/tests/malloc_free_fill (stderr) memcheck/tests/match-overrun (stderr) memcheck/tests/noisy_child (stderr) memcheck/tests/partial_load_dflt (stderr) memcheck/tests/partial_load_ok (stderr) memcheck/tests/partiallydefinedeq (stderr) memcheck/tests/pointer-trace (stderr) memcheck/tests/sigkill (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) 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) none/tests/blockfault (stderr) none/tests/faultstatus (stderr) none/tests/mremap (stderr) none/tests/mremap2 (stdout) none/tests/shell (stderr) none/tests/shell_valid1 (stderr) none/tests/shell_valid2 (stderr) none/tests/shell_valid3 (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) |
|
From: Tom H. <th...@cy...> - 2008-03-26 04:31:29
|
Nightly build on lloyd ( x86_64, Fedora 7 ) started at 2008-03-26 03:05:05 GMT 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 == 413 tests, 6 stderr failures, 2 stdout failures, 0 post failures == memcheck/tests/pointer-trace (stderr) memcheck/tests/vcpu_fnfns (stdout) memcheck/tests/x86/scalar (stderr) none/tests/faultstatus (stderr) none/tests/mremap (stderr) none/tests/mremap2 (stdout) helgrind/tests/tc20_verifywrap (stderr) helgrind/tests/tc22_exit_w_lock (stderr) |
|
From: Tom H. <th...@cy...> - 2008-03-26 03:53:07
|
Nightly build on aston ( x86_64, Fedora Core 5 ) started at 2008-03-26 03:20:05 GMT Results differ from 24 hours ago Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 419 tests, 9 stderr failures, 1 stdout failure, 0 post failures == memcheck/tests/malloc_free_fill (stderr) memcheck/tests/pointer-trace (stderr) memcheck/tests/x86/scalar (stderr) none/tests/blockfault (stderr) none/tests/faultstatus (stderr) none/tests/mremap (stderr) none/tests/mremap2 (stdout) helgrind/tests/tc20_verifywrap (stderr) helgrind/tests/tc21_pthonce (stderr) helgrind/tests/tc22_exit_w_lock (stderr) ================================================= == Results from 24 hours ago == ================================================= Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 419 tests, 9 stderr failures, 2 stdout failures, 0 post failures == memcheck/tests/malloc_free_fill (stderr) memcheck/tests/pointer-trace (stderr) memcheck/tests/x86/scalar (stderr) none/tests/blockfault (stderr) none/tests/faultstatus (stderr) none/tests/mremap (stderr) none/tests/mremap2 (stdout) helgrind/tests/tc08_hbl2 (stdout) helgrind/tests/tc20_verifywrap (stderr) helgrind/tests/tc21_pthonce (stderr) helgrind/tests/tc22_exit_w_lock (stderr) ================================================= == Difference between 24 hours ago and now == ================================================= *** old.short Wed Mar 26 03:36:37 2008 --- new.short Wed Mar 26 03:53:09 2008 *************** *** 8,10 **** ! == 419 tests, 9 stderr failures, 2 stdout failures, 0 post failures == memcheck/tests/malloc_free_fill (stderr) --- 8,10 ---- ! == 419 tests, 9 stderr failures, 1 stdout failure, 0 post failures == memcheck/tests/malloc_free_fill (stderr) *************** *** 16,18 **** none/tests/mremap2 (stdout) - helgrind/tests/tc08_hbl2 (stdout) helgrind/tests/tc20_verifywrap (stderr) --- 16,17 ---- |
|
From: Tom H. <th...@cy...> - 2008-03-26 03:40:34
|
Nightly build on trojan ( x86_64, Fedora Core 6 ) started at 2008-03-26 03:25:04 GMT 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 == 417 tests, 8 stderr failures, 5 stdout failures, 0 post failures == 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/cmdline1 (stdout) none/tests/cmdline2 (stdout) none/tests/faultstatus (stderr) none/tests/mremap (stderr) none/tests/mremap2 (stdout) helgrind/tests/tc20_verifywrap (stderr) helgrind/tests/tc21_pthonce (stderr) helgrind/tests/tc22_exit_w_lock (stderr) |
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From: Tom H. <th...@cy...> - 2008-03-26 03:33:07
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Nightly build on dellow ( x86_64, Fedora 8 ) started at 2008-03-26 03:10:06 GMT Results differ from 24 hours ago Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 413 tests, 9 stderr failures, 2 stdout failures, 0 post failures == memcheck/tests/pointer-trace (stderr) memcheck/tests/vcpu_fnfns (stdout) memcheck/tests/x86/scalar (stderr) none/tests/faultstatus (stderr) none/tests/mremap (stderr) none/tests/mremap2 (stdout) helgrind/tests/tc17_sembar (stderr) helgrind/tests/tc18_semabuse (stderr) helgrind/tests/tc20_verifywrap (stderr) helgrind/tests/tc21_pthonce (stderr) helgrind/tests/tc22_exit_w_lock (stderr) ================================================= == Results from 24 hours ago == ================================================= Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 413 tests, 9 stderr failures, 3 stdout failures, 0 post failures == memcheck/tests/pointer-trace (stderr) memcheck/tests/vcpu_fnfns (stdout) memcheck/tests/x86/scalar (stderr) none/tests/faultstatus (stderr) none/tests/mremap (stderr) none/tests/mremap2 (stdout) helgrind/tests/tc08_hbl2 (stdout) helgrind/tests/tc17_sembar (stderr) helgrind/tests/tc18_semabuse (stderr) helgrind/tests/tc20_verifywrap (stderr) helgrind/tests/tc21_pthonce (stderr) helgrind/tests/tc22_exit_w_lock (stderr) ================================================= == Difference between 24 hours ago and now == ================================================= *** old.short Wed Mar 26 03:21:45 2008 --- new.short Wed Mar 26 03:33:11 2008 *************** *** 8,10 **** ! == 413 tests, 9 stderr failures, 3 stdout failures, 0 post failures == memcheck/tests/pointer-trace (stderr) --- 8,10 ---- ! == 413 tests, 9 stderr failures, 2 stdout failures, 0 post failures == memcheck/tests/pointer-trace (stderr) *************** *** 15,17 **** none/tests/mremap2 (stdout) - helgrind/tests/tc08_hbl2 (stdout) helgrind/tests/tc17_sembar (stderr) --- 15,16 ---- |
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From: Tom H. <th...@cy...> - 2008-03-26 03:17:02
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Nightly build on gill ( x86_64, Fedora Core 2 ) started at 2008-03-26 03:00:02 GMT 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 == 419 tests, 31 stderr failures, 3 stdout failures, 0 post failures == memcheck/tests/malloc_free_fill (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/faultstatus (stderr) none/tests/fdleak_fcntl (stderr) none/tests/mremap (stderr) none/tests/mremap2 (stdout) none/tests/x86/insn_ssse3 (stdout) none/tests/x86/insn_ssse3 (stderr) none/tests/x86/ssse3_misaligned (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) |