[GHC] #13970: Segmentation fault inside threadPaused
GHC
ghc-devs at haskell.org
Fri Jul 14 09:23:04 UTC 2017
#13970: Segmentation fault inside threadPaused
-------------------------------------+-------------------------------------
Reporter: albertov | Owner: (none)
Type: bug | Status: new
Priority: normal | Milestone:
Component: Runtime System | Version: 8.2.1-rc3
Resolution: | Keywords:
Operating System: Unknown/Multiple | Architecture:
| Unknown/Multiple
Type of failure: None/Unknown | Test Case:
Blocked By: | Blocking:
Related Tickets: | Differential Rev(s):
Wiki Page: |
-------------------------------------+-------------------------------------
Comment (by albertov):
I've got a SEGFAULT in a new location which seems related to the same
issue:
{{{
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00007f747043a32f in stg_BLACKHOLE_info ()
from /nix/store/ka5975xi1b7vcw98a1agqhb0y4gxcwbj-
ghc-8.2.0.20170704/lib/ghc-8.2.0.20170704/rts/libHSrts_thr_debug-
ghc8.2.0.20170704.so
[Current thread is 1 (LWP 25315)]
warning: File "/nix/store/xfrkm34sk0a13ha9bpki61l2k5g1v8dh-
gcc-5.4.0-lib/lib/libstdc++.so.6.0.21-gdb.py" auto-loading has been
declined by your `auto-load safe-path' set to "$debugdir:$datadir/auto-
load".
(gdb) bt
#0 0x00007f747043a32f in stg_BLACKHOLE_info ()
from /nix/store/ka5975xi1b7vcw98a1agqhb0y4gxcwbj-
ghc-8.2.0.20170704/lib/ghc-8.2.0.20170704/rts/libHSrts_thr_debug-
ghc8.2.0.20170704.so
#1 0x0000000000000000 in ?? ()
(gdb) info locals
No symbol table info available.
(gdb) disassemble
Dump of assembler code for function stg_BLACKHOLE_info:
0x00007f747043a240 <+0>: mov 0x8(%rbx),%rax
0x00007f747043a244 <+4>: test $0x7,%al
0x00007f747043a246 <+6>: jne 0x7f747043a32c
<stg_BLACKHOLE_info+236>
0x00007f747043a24c <+12>: mov (%rax),%rcx
0x00007f747043a24f <+15>: cmp 0x2d7f2(%rip),%rcx #
0x7f7470467a48
0x00007f747043a256 <+22>: je 0x7f747043a240 <stg_BLACKHOLE_info>
0x00007f747043a258 <+24>: cmp 0x2d7e1(%rip),%rcx #
0x7f7470467a40
0x00007f747043a25f <+31>: je 0x7f747043a2a4
<stg_BLACKHOLE_info+100>
0x00007f747043a261 <+33>: cmp 0x2d7b0(%rip),%rcx #
0x7f7470467a18
0x00007f747043a268 <+40>: je 0x7f747043a2a4
<stg_BLACKHOLE_info+100>
0x00007f747043a26a <+42>: cmp 0x2d79f(%rip),%rcx #
0x7f7470467a10
0x00007f747043a271 <+49>: je 0x7f747043a2a4
<stg_BLACKHOLE_info+100>
0x00007f747043a273 <+51>: test $0x7,%al
0x00007f747043a275 <+53>: jne 0x7f747043a345
<stg_BLACKHOLE_info+261>
0x00007f747043a27b <+59>: mov (%rax),%rbx
0x00007f747043a27e <+62>: cmpl $0x1a,-0x8(%rbx)
0x00007f747043a282 <+66>: jb 0x7f747043a34b
<stg_BLACKHOLE_info+267>
0x00007f747043a288 <+72>: cmpl $0x1c,-0x8(%rbx)
0x00007f747043a28c <+76>: jb 0x7f747043a332
<stg_BLACKHOLE_info+242>
0x00007f747043a292 <+82>: cmpl $0x1d,-0x8(%rbx)
0x00007f747043a296 <+86>: jb 0x7f747043a33c
<stg_BLACKHOLE_info+252>
0x00007f747043a29c <+92>: mov %rbx,%rcx
0x00007f747043a29f <+95>: mov %rax,%rbx
0x00007f747043a2a2 <+98>: jmpq *%rcx
0x00007f747043a2a4 <+100>: lea -0xeebb(%rip),%rax #
0x7f747042b3f0 <allocate>
0x00007f747043a2ab <+107>: lea -0x18(%r13),%rcx
0x00007f747043a2af <+111>: mov $0x4,%edx
0x00007f747043a2b4 <+116>: sub $0x8,%rsp
0x00007f747043a2b8 <+120>: mov %rdx,%rsi
0x00007f747043a2bb <+123>: mov %rcx,%rdi
0x00007f747043a2be <+126>: mov %rax,%rcx
0x00007f747043a2c1 <+129>: xor %eax,%eax
0x00007f747043a2c3 <+131>: callq *%rcx
0x00007f747043a2c5 <+133>: add $0x8,%rsp
0x00007f747043a2c9 <+137>: lea 0x6e0(%rip),%rcx #
0x7f747043a9b0 <stg_MSG_BLACKHOLE_info>
0x00007f747043a2d0 <+144>: mov %rcx,(%rax)
0x00007f747043a2d3 <+147>: mov 0x368(%r13),%rcx
0x00007f747043a2da <+154>: mov %rcx,0x10(%rax)
0x00007f747043a2de <+158>: mov %rbx,0x18(%rax)
0x00007f747043a2e2 <+162>: lea -0x2e299(%rip),%rcx #
0x7f747040c050 <messageBlackHole>
0x00007f747043a2e9 <+169>: lea -0x18(%r13),%rdx
0x00007f747043a2ed <+173>: mov %rax,%rsi
0x00007f747043a2f0 <+176>: sub $0x8,%rsp
0x00007f747043a2f4 <+180>: mov %rdx,%rdi
0x00007f747043a2f7 <+183>: mov %rax,%rdx
0x00007f747043a2fa <+186>: xor %eax,%eax
0x00007f747043a2fc <+188>: mov %rdx,%r14
0x00007f747043a2ff <+191>: callq *%rcx
0x00007f747043a301 <+193>: add $0x8,%rsp
0x00007f747043a305 <+197>: test %rax,%rax
0x00007f747043a308 <+200>: je 0x7f747043a240 <stg_BLACKHOLE_info>
0x00007f747043a30e <+206>: mov 0x368(%r13),%rax
0x00007f747043a315 <+213>: movw $0x2,0x22(%rax)
0x00007f747043a31b <+219>: mov 0x368(%r13),%rax
0x00007f747043a322 <+226>: mov %r14,0x28(%rax)
0x00007f747043a326 <+230>: jmpq 0x7f7470438d58
<stg_block_blackhole>
0x00007f747043a32b <+235>: nop
0x00007f747043a32c <+236>: mov %rax,%rbx
=> 0x00007f747043a32f <+239>: jmpq *0x0(%rbp)
0x00007f747043a332 <+242>: cmpl $0x1b,-0x8(%rbx)
0x00007f747043a336 <+246>: jb 0x7f747043a29c
<stg_BLACKHOLE_info+92>
0x00007f747043a33c <+252>: mov 0x8(%rax),%rax
0x00007f747043a340 <+256>: jmpq 0x7f747043a273
<stg_BLACKHOLE_info+51>
0x00007f747043a345 <+261>: mov %rax,%rbx
0x00007f747043a348 <+264>: jmpq *0x0(%rbp)
0x00007f747043a34b <+267>: cmpl $0xf,-0x8(%rbx)
0x00007f747043a34f <+271>: jb 0x7f747043a36d
<stg_BLACKHOLE_info+301>
0x00007f747043a351 <+273>: cmpl $0x19,-0x8(%rbx)
0x00007f747043a355 <+277>: jb 0x7f747043a35d
<stg_BLACKHOLE_info+285>
0x00007f747043a357 <+279>: mov %rax,%rbx
0x00007f747043a35a <+282>: jmpq *0x0(%rbp)
0x00007f747043a35d <+285>: movslq -0x8(%rbx),%rcx
0x00007f747043a361 <+289>: cmp $0x17,%rcx
0x00007f747043a365 <+293>: jne 0x7f747043a29c
<stg_BLACKHOLE_info+92>
0x00007f747043a36b <+299>: jmp 0x7f747043a357
<stg_BLACKHOLE_info+279>
0x00007f747043a36d <+301>: cmpl $0x8,-0x8(%rbx)
0x00007f747043a371 <+305>: jb 0x7f747043a29c
<stg_BLACKHOLE_info+92>
0x00007f747043a377 <+311>: movslq -0x8(%rbx),%rbx
0x00007f747043a37b <+315>: add $0xfffffffffffffff8,%rbx
0x00007f747043a37f <+319>: lea 0x1eca2(%rip),%rcx #
0x7f7470459028
0x00007f747043a386 <+326>: movslq (%rcx,%rbx,8),%rbx
0x00007f747043a38a <+330>: add %rbx,%rcx
0x00007f747043a38d <+333>: jmpq *%rcx
End of assembler dump.
}}}
--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13970#comment:9>
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