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MoarVM Panic when running e. g. t/04-nativecall/06-struct.t with a small nursery #777

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dogbert17 opened this issue Jan 5, 2018 · 1 comment
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MoarVM Panic when running e. g. t/04-nativecall/06-struct.t with a small nursery #777

dogbert17 opened this issue Jan 5, 2018 · 1 comment

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@dogbert17
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dogbert17 commented Jan 5, 2018 •
edited

Other tests which I have seen fail with very similar backtraces are
t/04-nativecall/14-rw-attrs.t
t/04-nativecall/11-cpp.t
t/04-nativecall/12-sizeof.t

dogbert@dogbert-VirtualBox ~/repos/rakudo $ ./perl6 -v
This is Rakudo version 2017.12-111-g8023d2129 built on MoarVM version 2017.12-20-g57103408
implementing Perl 6.c.

dogbert@dogbert-VirtualBox ~/repos/rakudo/nqp/MoarVM $ git diff
diff --git a/src/gc/collect.h b/src/gc/collect.h
index 123d9348..f3eaa463 100644
--- a/src/gc/collect.h
+++ b/src/gc/collect.h
@@ -1,6 +1,6 @@
 /* The maximum size of the nursery area. Note that since it's semi-space
  * copying, we could actually have double this amount allocated per thread. */
-#define MVM_NURSERY_SIZE 4194304
+#define MVM_NURSERY_SIZE (32768 * 2)
 
 /* The nursery size threads other than the main thread start out with. If
  * they fill it and trigger a GC run, then it is doubled. If they are
diff --git a/src/gc/debug.h b/src/gc/debug.h
index 9c613ca9..cfd3ae67 100644
--- a/src/gc/debug.h
+++ b/src/gc/debug.h
@@ -3,7 +3,7 @@
  * 1 = Checks on reference assignments and other relatively cheap cases
  * 2 = Checks on every object register access (slow)
  */
-#define MVM_GC_DEBUG 0
+#define MVM_GC_DEBUG 1
 
 #if MVM_GC_DEBUG
 #define MVM_ASSERT_NOT_FROMSPACE(tc, c) do { \


(gdb) r
Starting program: /home/dogbert/repos/rakudo/install/bin/moar --execname=./perl6-gdb-m --libpath=. --libpath=blib --libpath=/home/dogbert/repos/rakudo/install/share/nqp/lib --libpath=/home/dogbert/repos/rakudo/install/share/nqp/lib --libpath=/home/dogbert/repos/rakudo/install/share/nqp/lib /home/dogbert/repos/rakudo/perl6.moarvm --nqp-lib=blib t/04-nativecall/06-struct.t
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[New Thread 0xb1e7cb40 (LWP 3926)]

Breakpoint 1, MVM_panic (exitCode=1, messageFormat=0xb60ba1a0 "Adding pointer %p to past fromspace to GC worklist") at src/core/exceptions.c:822
822	    fprintf(stderr, "MoarVM panic: ");
(gdb) bt
#0  MVM_panic (exitCode=1, messageFormat=0xb60ba1a0 "Adding pointer %p to past fromspace to GC worklist") at src/core/exceptions.c:822
#1  0xb5e8bb95 in gc_mark_repr_data (tc=0xb5403c80, st=0xb2c86308, worklist=0x99b1ad10) at src/6model/reprs/CStruct.c:635
#2  0xb5d8d0d6 in MVM_gc_mark_collectable (tc=0xb5403c80, worklist=0x99b1ad10, new_addr=0xb2c86308) at src/gc/collect.c:408
#3  0xb5d7c12a in MVM_gc_root_add_gen2s_to_worklist (tc=0xb5403c80, worklist=0x99b1ad10) at src/gc/roots.c:302
#4  0xb5d83e38 in MVM_gc_collect (tc=0xb5403c80, what_to_do=0 '\000', gen=0 '\000') at src/gc/collect.c:155
#5  0xb5d68a83 in run_gc (tc=0xb5403c80, what_to_do=0 '\000') at src/gc/orchestrate.c:369
#6  0xb5d69725 in MVM_gc_enter_from_allocator (tc=0xb5403c80) at src/gc/orchestrate.c:486
#7  0xb5d6a253 in MVM_gc_allocate_nursery (tc=0xb5403c80, size=40) at src/gc/allocation.c:32
#8  0xb5d6a027 in MVM_gc_allocate (tc=0xb5403c80, size=40) at src/gc/allocation.h:13
#9  0xb5d6a333 in MVM_gc_allocate_zeroed (tc=0xb5403c80, size=40) at src/gc/allocation.c:49
#10 0xb5d6ac4a in MVM_gc_allocate_object (tc=0xb5403c80, st=0xb2c01b50) at src/gc/allocation.c:86
#11 0xb5ddcfc5 in MVM_repr_alloc_init (tc=0xb5403c80, type=0xb3401650) at src/6model/reprconv.c:17
#12 0xb5e522b2 in MVM_iter (tc=0xb5403c80, target=0xb2639f38) at src/6model/reprs/MVMIter.c:203
#13 0xb5c8ab63 in MVM_interp_run (tc=0xb5403c80, initial_invoke=0xb602ed3f <toplevel_initial_invoke>, invoke_data=0xb13008c0) at src/core/interp.c:2778
#14 0xb602f1f8 in MVM_vm_run_file (instance=0xb5603480, filename=0xbffff2dd "/home/dogbert/repos/rakudo/perl6.moarvm") at src/moar.c:401
#15 0x080494f9 in main (argc=10, argv=0xbfffefe4) at src/main.c:256
(gdb) info threads
  Id   Target Id         Frame 
  2    Thread 0xb1e7cb40 (LWP 3926) "moar" 0xb7fdccb0 in ?? ()
* 1    Thread 0xb584b940 (LWP 3920) "moar" MVM_panic (exitCode=1, messageFormat=0xb60ba1a0 "Adding pointer %p to past fromspace to GC worklist") at src/core/exceptions.c:822
(gdb) f 1
#1  0xb5e8bb95 in gc_mark_repr_data (tc=0xb5403c80, st=0xb2c86308, worklist=0x99b1ad10) at src/6model/reprs/CStruct.c:635
635	                MVM_gc_worklist_add(tc, worklist, &map[i].name_map);
(gdb) p MVM_dump_backtrace(tc)
   at gen/moar/stage2/QRegex.nqp:2190  (/home/dogbert/repos/rakudo/install/share/nqp/lib/QRegex.moarvm:MATCH)
 from <unknown>:1  (/home/dogbert/repos/rakudo/install/share/nqp/lib/QRegex.moarvm:!cursor_pass)
 from <unknown>:1  (blib/Perl6/Grammar.moarvm:value:sym<quote>)
 from gen/moar/stage2/QRegex.nqp:1722  (/home/dogbert/repos/rakudo/install/share/nqp/lib/QRegex.moarvm:!protoregex)
 from <unknown>:1  (blib/Perl6/Grammar.moarvm:value)
 from <unknown>:1  (blib/Perl6/Grammar.moarvm:term:sym<value>)
 from gen/moar/stage2/QRegex.nqp:1722  (/home/dogbert/repos/rakudo/install/share/nqp/lib/QRegex.moarvm:!protoregex)
 from <unknown>:1  (blib/Perl6/Grammar.moarvm:term)
 from src/Perl6/Grammar.nqp:4001  (blib/Perl6/Grammar.moarvm:termish)
 from gen/moar/stage2/NQPHLL.nqp:883  (/home/dogbert/repos/rakudo/install/share/nqp/lib/NQPHLL.moarvm:EXPR)
 from src/Perl6/Grammar.nqp:4041  (blib/Perl6/Grammar.moarvm:EXPR)
 from src/Perl6/Grammar.nqp:1334  (blib/Perl6/Grammar.moarvm:statement)
 from <unknown>:1  (blib/Perl6/Grammar.moarvm:semilist)
 from <unknown>:1  (blib/Perl6/Grammar.moarvm:circumfix:sym<( )>)
 from gen/moar/stage2/QRegex.nqp:1721  (/home/dogbert/repos/rakudo/install/share/nqp/lib/QRegex.moarvm:!protoregex)
 from <unknown>:1  (/home/dogbert/repos/rakudo/install/share/nqp/lib/NQPHLL.moarvm:circumfix)
 from src/Perl6/Grammar.nqp:3360  (blib/Perl6/Grammar.moarvm:trait_mod:sym<is>)
 from gen/moar/stage2/QRegex.nqp:1721  (/home/dogbert/repos/rakudo/install/share/nqp/lib/QRegex.moarvm:!protoregex)
 from <unknown>:1  (blib/Perl6/Grammar.moarvm:trait_mod)
 from <unknown>:1  (blib/Perl6/Grammar.moarvm:trait)
 from src/Perl6/Grammar.nqp:2796  (blib/Perl6/Grammar.moarvm:routine_def)
 from <unknown>:1  (blib/Perl6/Grammar.moarvm:routine_declarator:sym<sub>)
 from gen/moar/stage2/QRegex.nqp:1721  (/home/dogbert/repos/rakudo/install/share/nqp/lib/QRegex.moarvm:!protoregex)
 from <unknown>:1  (blib/Perl6/Grammar.moarvm:routine_declarator)
 from <unknown>:1  (blib/Perl6/Grammar.moarvm:term:sym<routine_declarator>)
 from gen/moar/stage2/QRegex.nqp:1721  (/home/dogbert/repos/rakudo/install/share/nqp/lib/QRegex.moarvm:!protoregex)
 from <unknown>:1  (blib/Perl6/Grammar.moarvm:term)
 from src/Perl6/Grammar.nqp:4001  (blib/Perl6/Grammar.moarvm:termish)
 from gen/moar/stage2/NQPHLL.nqp:883  (/home/dogbert/repos/rakudo/install/share/nqp/lib/NQPHLL.moarvm:EXPR)
 from src/Perl6/Grammar.nqp:4041  (blib/Perl6/Grammar.moarvm:EXPR)
 from src/Perl6/Grammar.nqp:1334  (blib/Perl6/Grammar.moarvm:statement)
 from src/Perl6/Grammar.nqp:1266  (blib/Perl6/Grammar.moarvm:statementlist)
 from gen/moar/stage2/NQPHLL.nqp:1113  (/home/dogbert/repos/rakudo/install/share/nqp/lib/NQPHLL.moarvm:LANG)
 from src/Perl6/Grammar.nqp:1700  (blib/Perl6/Grammar.moarvm:FOREIGN_LANG)
 from src/Perl6/Grammar.nqp:1230  (blib/Perl6/Grammar.moarvm:comp_unit)
 from src/Perl6/Grammar.nqp:532  (blib/Perl6/Grammar.moarvm:TOP)
 from gen/moar/stage2/QRegex.nqp:2330  (/home/dogbert/repos/rakudo/install/share/nqp/lib/QRegex.moarvm:parse)
 from gen/moar/stage2/NQPHLL.nqp:1881  (/home/dogbert/repos/rakudo/install/share/nqp/lib/NQPHLL.moarvm:parse)
 from gen/moar/stage2/NQPHLL.nqp:1797  (/home/dogbert/repos/rakudo/install/share/nqp/lib/NQPHLL.moarvm:execute_stage)
 from gen/moar/stage2/NQPHLL.nqp:1830  (/home/dogbert/repos/rakudo/install/share/nqp/lib/NQPHLL.moarvm:run)
 from gen/moar/stage2/NQPHLL.nqp:1833  (/home/dogbert/repos/rakudo/install/share/nqp/lib/NQPHLL.moarvm:)
 from gen/moar/stage2/NQPHLL.nqp:1819  (/home/dogbert/repos/rakudo/install/share/nqp/lib/NQPHLL.moarvm:compile)
 from gen/moar/stage2/NQPHLL.nqp:1519  (/home/dogbert/repos/rakudo/install/share/nqp/lib/NQPHLL.moarvm:eval)
 from gen/moar/stage2/NQPHLL.nqp:1774  (/home/dogbert/repos/rakudo/install/share/nqp/lib/NQPHLL.moarvm:evalfiles)
 from gen/moar/stage2/NQPHLL.nqp:1666  (/home/dogbert/repos/rakudo/install/share/nqp/lib/NQPHLL.moarvm:command_eval)
 from src/Perl6/Compiler.nqp:42  (blib/Perl6/Compiler.moarvm:command_eval)
 from gen/moar/stage2/NQPHLL.nqp:1625  (/home/dogbert/repos/rakudo/install/share/nqp/lib/NQPHLL.moarvm:command_line)
 from gen/moar/main.nqp:47  (/home/dogbert/repos/rakudo/perl6.moarvm:MAIN)
 from gen/moar/main.nqp:38  (/home/dogbert/repos/rakudo/perl6.moarvm:<mainline>)
 from <unknown>:1  (/home/dogbert/repos/rakudo/perl6.moarvm:<main>)
 from <unknown>:1  (/home/dogbert/repos/rakudo/perl6.moarvm:<entry>)
$1 = void
(gdb)
@dogbert17
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Fixed by jnthn++ with commit 85fc758

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@dogbert17