On Sat, 10 Oct 2015 06:03:52 -0700, nicholas wrote:
> On Thu, Oct 08, 2015 at 05:43:11AM -0700, Carlin Bingham wrote:
>
> > Doesn't seem to happen if the main program thread is still running
> > when
> > the thread exits.
> >
> >
> > use v6;
> >
> > Thread.start({
> > my $fh = open('/dev/urandom');
> > say $fh.read(16);
> > say "alive";
> > });
> >
> > say "main program ending";
>
> ASAN suggests that it's a "regular" SEGV - ie there are no bad memory
> accesses
> leading up to the crash:
>
> $ ./perl6-m -Ilib 126297
> main program ending
> Buf[uint8]:0x<76 35 16 81 97 9f 8c 3f 77 f7 d4 02 00 ff bb 47>
> alive
> ASAN:SIGSEGV
> =================================================================
> ==17783==ERROR: AddressSanitizer: SEGV on unknown address
> 0x000000000000 (pc 0x7fc605dfa929 sp 0x7fff1a3952e0 bp 0x7fff1a395310
> T0)
> #0 0x7fc605dfa928 in MVM_gc_root_add_temps_to_worklist
> src/gc/roots.c:171
> #1 0x7fc605dff068 in MVM_gc_collect src/gc/collect.c:103
> #2 0x7fc605df36fa in run_gc src/gc/orchestrate.c:292
> #3 0x7fc605df404f in MVM_gc_enter_from_allocator
> src/gc/orchestrate.c:427
> #4 0x7fc605da9ab7 in try_join src/core/threads.c:156
> #5 0x7fc605daa136 in MVM_thread_join_foreground
> src/core/threads.c:243
> #6 0x7fc605fd01e9 in MVM_vm_exit src/moar.c:263
> #7 0x401a82 in main src/main.c:198
> #8 0x7fc605563d5c in __libc_start_main (/lib64/libc.so.6+0x1ed5c)
> #9 0x401058 (/home/nicholas/Sandpit/moar-san/bin/moar+0x401058)
>
> AddressSanitizer can not provide additional info.
> SUMMARY: AddressSanitizer: SEGV src/gc/roots.c:171
> MVM_gc_root_add_temps_to_worklist
> ==17783==ABORTING
>
> Nicholas Clark
Fixed as part of jnthn's reframe work in May 2016. Relevant commits are,
AlexDaniel++,
743e7a3dc9a46a2599663e0d448267071831c62c
925336ab25a2e6cd1b6865ce6bbdec97c5be85b8
cebcdd5031c6b6c6e866beee4b52a6a2fd23fcaa
260d5bd2ddd453c31a9e4f2cc9dc0c53bbdd5eea
8b6a4f1fc85846d8d017686a79257b88b165943e
1100877064943356599966c0a241a09b73c99b16
