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| MIME-Version: 1.0 | |
| Content-Type: text/plain; charset=UTF-8; | |
| format=flowed | |
| Content-Transfer-Encoding: 7bit | |
| Date: Fri, 07 Jul 2017 12:18:45 -0400 | |
| From: Justin DeVuyst <justin@devuyst.com> | |
| To: <rakudobug@perl.org> | |
| Subject: [BUG] Segfault seemingly related to MVMCallCapture's | |
| =?UTF-8?Q?gc=5Fmark=2C=20and=20async?= | |
| Message-ID: <14024834675b6a5e6e2c3daea3c56e26@mail.devuyst.com> | |
| X-Sender: justin@devuyst.com | |
| User-Agent: Roundcube Webmail/0.6 | |
| I golfed it as much as I could. See Below. | |
| jdv@new-host-2 t]$ cat html_decode.pl | |
| use strict; | |
| use warnings; | |
| use HTML::Entities; | |
| use JSON::XS; | |
| my $in = decode_json(join('', <STDIN>)); | |
| decode_entities($in->{html}) for 1..($in->{iterations} // 1); | |
| print JSON::XS->new->utf8->canonical->pretty->encode( | |
| { html => $in->{html} }); | |
| [jdv@new-host-2 t]$ | |
| [jdv@new-host-2 t]$ cat 01-basic.t | |
| use v6; | |
| use XML; | |
| class Agent::RedditAgent { | |
| method html-decode (:$html is copy, :$iterations = 1) { | |
| my $p = run 'perl', './html_decode.pl', :in, | |
| :out; | |
| $p.in.print(to-json({ :$html, :$iterations })); | |
| $p.in.close; | |
| from-json($p.out.slurp-rest)<html>; | |
| } | |
| method run { loop { | |
| sleep 1; | |
| my $content = run( 'curl', '-s', '-A', '', | |
| <https://www.reddit.com/r/perl6/.rss>, :out | |
| ).out.slurp(:close); | |
| my %entries = map { | |
| self.html-decode(html => '', :2iterations); | |
| |(); | |
| }, from-xml($content).lookfor(:TAG<entry>); | |
| } } | |
| } | |
| await start { Agent::RedditAgent.new.run } | |
| [jdv@new-host-2 t]$ | |
| [jdv@new-host-2 t]$ perl6-gdb-m 01-basic.t | |
| ================================================================================================ | |
| This is Rakudo Perl 6 running in the GNU debugger, which often allows | |
| the user to generate useful back- | |
| traces to debug or report issues in Rakudo, the MoarVM backend or the | |
| currently running code. | |
| This Rakudo version is 2017.06.170.gb.0.c.8.e.18 built on MoarVM | |
| version 2017.06.37.g.4.e.29.e.4.c, | |
| running on fedora (25.Workstation.Edition) / linux | |
| (4.11.5.200.fc.25.x.86._.64) | |
| Type `bt full` to generate a backtrace if applicable, type `q` to quit | |
| or `help` for help. | |
| ------------------------------------------------------------------------------------------------ | |
| Reading symbols from /home/jdv/rakudo/install/bin/moar...done. | |
| Starting program: /home/jdv/rakudo/install/bin/moar | |
| --execname=/home/jdv/rakudo/install/bin/perl6-gdb-m | |
| --libpath=/home/jdv/rakudo/install/share/nqp/lib | |
| --libpath=/home/jdv/rakudo/install/share/perl6/lib | |
| --libpath=/home/jdv/rakudo/install/share/perl6/runtime | |
| /home/jdv/rakudo/install/share/perl6/runtime/perl6.moarvm 01-basic.t | |
| [Thread debugging using libthread_db enabled] | |
| Using host libthread_db library "/lib64/libthread_db.so.1". | |
| [New Thread 0x7ffff453b700 (LWP 28134)] | |
| [New Thread 0x7ffff3939700 (LWP 28136)] | |
| [New Thread 0x7ffff2d37700 (LWP 28137)] | |
| Detaching after fork from child process 28138. | |
| [New Thread 0x7ffff2135700 (LWP 28139)] | |
| [New Thread 0x7ffff1533700 (LWP 28142)] | |
| [New Thread 0x7fffdb3fc700 (LWP 28148)] | |
| Detaching after fork from child process 28149. | |
| [New Thread 0x7fffda7fa700 (LWP 28150)] | |
| [New Thread 0x7fffd9bf8700 (LWP 28151)] | |
| [New Thread 0x7fffd8ff6700 (LWP 28152)] | |
| [New Thread 0x7fffcbfff700 (LWP 28153)] | |
| [New Thread 0x7fffca7fb700 (LWP 28155)] | |
| [New Thread 0x7fffcaffc700 (LWP 28154)] | |
| [New Thread 0x7fffc9bf9700 (LWP 28156)] | |
| [New Thread 0x7fffc8bf6700 (LWP 28157)] | |
| [New Thread 0x7fffb3fff700 (LWP 28158)] | |
| Detaching after fork from child process 28159. | |
| [New Thread 0x7fffb33fd700 (LWP 28160)] | |
| [New Thread 0x7fffb27fb700 (LWP 28161)] | |
| Detaching after fork from child process 28162. | |
| ... | |
| Detaching after fork from child process 28490. | |
| Thread 2 "moar" received signal SIGSEGV, Segmentation fault. | |
| [Switching to Thread 0x7ffff453b700 (LWP 28134)] | |
| 0x00007ffff782e2b7 in gc_mark (tc=0x38fd470, st=<optimized out>, | |
| data=<optimized out>, worklist=0x7fffeea2ecc0) | |
| at src/6model/reprs/MVMCallCapture.c:54 | |
| 54 if (flag_map[flag] & MVM_CALLSITE_ARG_NAMED) { | |
| Missing separate debuginfos, use: dnf debuginfo-install | |
| glibc-2.24-6.fc25.x86_64 | |
| (gdb) bt | |
| #0 0x00007ffff782e2b7 in gc_mark (tc=0x38fd470, st=<optimized out>, | |
| data=<optimized out>, worklist=0x7fffeea2ecc0) | |
| at src/6model/reprs/MVMCallCapture.c:54 | |
| #1 0x00007ffff7808bd0 in process_worklist (tc=tc@entry=0x38fd470, | |
| worklist=worklist@entry=0x7fffeea2ecc0, | |
| wtp=wtp@entry=0x7ffff453a990, | |
| gen=gen@entry=0 '\000') at src/gc/collect.c:313 | |
| #2 0x00007ffff780926d in MVM_gc_collect (tc=0x38fd470, | |
| what_to_do=<optimized out>, | |
| gen=gen@entry=0 '\000') at src/gc/collect.c:129 | |
| #3 0x00007ffff7805085 in run_gc (tc=tc@entry=0x38fd470, | |
| what_to_do=what_to_do@entry=0 '\000') at src/gc/orchestrate.c:357 | |
| #4 0x00007ffff7805a31 in MVM_gc_enter_from_allocator | |
| (tc=tc@entry=0x38fd470) | |
| at src/gc/orchestrate.c:470 | |
| #5 0x00007ffff7805c28 in MVM_gc_allocate_nursery (tc=0x38fd470, | |
| size=56) | |
| at src/gc/allocation.c:32 | |
| #6 0x00007ffff7805e64 in MVM_gc_allocate_object (tc=0x38fd470, | |
| st=<optimized out>) | |
| at src/gc/allocation.c:86 | |
| #7 0x00007ffff7818a03 in MVM_repr_alloc_init (tc=0x38fd470, | |
| type=<optimized out>) | |
| at src/6model/reprconv.c:13 | |
| #8 0x00007ffff5d8437a in p6scalarfromdesc () | |
| from | |
| /home/jdv/rakudo/install/share/perl6/runtime/dynext/libperl6_ops_moar.so | |
| #9 0x00007ffff5c06c89 in ?? () | |
| #10 0x0000000000000008 in ?? () | |
| #11 0x00007ffff78c34c8 in ?? () | |
| from //home/jdv/rakudo/nqp/MoarVM/install/lib/libmoar.so | |
| #12 0x00007fffece09d10 in ?? () | |
| #13 0x00007ffff77ec942 in MVM_frame_invoke (tc=<optimized out>, | |
| static_frame=<optimized out>, callsite=<optimized out>, | |
| args=<optimized out>, | |
| outer=<optimized out>, code_ref=<optimized out>, | |
| spesh_cand=<optimized out>) | |
| at src/core/frame.c:571 | |
| #14 0x0000000000e5e0f8 in ?? () | |
| #15 0x00007ffff58c6c46 in ?? () | |
| #16 0x00007ffff786eb19 in MVM_jit_enter_code (tc=<optimized out>, | |
| cu=<optimized out>, code=<optimized out>) at src/jit/compile.c:139 | |
| #17 0x00007ffff77d7733 in MVM_interp_run (tc=tc@entry=0x38fd470, | |
| initial_invoke=0x7fffee90fbb0, invoke_data=0x7fffeea53a68, | |
| invoke_data@entry=0x38fc700) at src/core/interp.c:5499 | |
| #18 0x00007ffff77f40fe in start_thread (data=0x38fc700) at | |
| src/core/threads.c:85 | |
| #19 0x00007ffff78bc847 in uv.thread_start () | |
| from //home/jdv/rakudo/nqp/MoarVM/install/lib/libmoar.so | |
| #20 0x00007ffff6d7973a in start_thread () from /lib64/libpthread.so.0 | |
| #21 0x00007ffff73a0e7f in clone () from /lib64/libc.so.6 | |
| (gdb) jdv@new-host-2 t]$ |
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