[GHC] #11234: GHCi on Windows segfaults
#11234: GHCi on Windows segfaults
----------------------------------------+-------------------------------
Reporter: Phyx- | Owner: Phyx-
Type: bug | Status: new
Priority: high | Milestone: 8.0.1
Component: Runtime System | Version: 7.11
Keywords: | Operating System: Windows
Architecture: Unknown/Multiple | Type of failure: GHCi crash
Test Case: | Blocked By:
Blocking: | Related Tickets:
Differential Rev(s): | Wiki Page:
----------------------------------------+-------------------------------
GHCi on Windows has had a segfault for while now on `x86_64`. During the
upgrade of `GCC` in Phab:D1123 I noticed that test `prog003` was failing
with a segfault.
Currently the segfault exist in both versions but on `x86` it's
particularly easy to trigger.
In my case I can't even start ghci.
{{{
$ inplace/bin/GHC-stage2.exe --interactive
GHCi, version 7.11.20151213: http://www.haskell.org/ghc/ :? for help
Segmentation fault/access violation in generated code
}}}
The segfault does not seem to happen when linked to the debug rts, and
running with `+RTS -Ds -RTS` doesn't report anything special.
Compiling with `devel2` so the rts gets compiled with `-g` the stack trace
is not very useful.
{{{
(gdb) run --interactive
Starting program: /home/Tamar/ghc/inplace/bin/ghc-stage2 --interactive
[New Thread 108480.0x1960c]
[New Thread 108480.0x19b2c]
[New Thread 108480.0x19c30]
[New Thread 108480.0x1a0a8]
[New Thread 108480.0x1a93c]
[New Thread 108480.0x13954]
[New Thread 108480.0x14440]
GHCi, version 7.11.20151213: http://www.haskell.org/ghc/ :? for help
Program received signal SIGSEGV, Segmentation fault.
0x06843aa5 in ?? ()
(gdb) bt
#0 0x06843aa5 in ?? ()
#1 0x04b82cfc in ?? ()
#2 0x8d078902 in ?? ()
#3 0xc689fd47 in ?? ()
#4 0xff04c583 in ?? ()
#5 0x83c70065 in ?? ()
#6 0x0000033c in ?? ()
#7 0x00000008 in ?? ()
#8 0x04e9c689 in ?? ()
Backtrace stopped: Cannot access memory at address 0x47c70cc8
}}}
And the output of `p4`
{{{
(gdb) p4 0x06843aa5
0x6843ab0: 0x330073
0x6843aac: 0x790073
#11234: GHCi on Windows segfaults -------------------------------------+------------------------------------- Reporter: Phyx- | Owner: Phyx- Type: bug | Status: new Priority: highest | Milestone: 8.0.1 Component: Runtime System | Version: 7.11 Resolution: | Keywords: Operating System: Windows | Architecture: | Unknown/Multiple Type of failure: GHCi crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by simonmar): * priority: high => highest Comment: I guess we should consider this a release blocker. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11234#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#11234: GHCi on Windows segfaults -------------------------------------+------------------------------------- Reporter: Phyx- | Owner: Phyx- Type: bug | Status: patch Priority: highest | Milestone: 8.0.1 Component: Runtime System | Version: 7.11 Resolution: | Keywords: Operating System: Windows | Architecture: | Unknown/Multiple Type of failure: GHCi crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D1683 Wiki Page: | -------------------------------------+------------------------------------- Changes (by Phyx-): * status: new => patch * differential: => Phab:D1683 -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11234#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#11234: GHCi on Windows segfaults
-------------------------------------+-------------------------------------
Reporter: Phyx- | Owner: Phyx-
Type: bug | Status: patch
Priority: highest | Milestone: 8.0.1
Component: Runtime System | Version: 7.11
Resolution: | Keywords:
Operating System: Windows | Architecture:
| Unknown/Multiple
Type of failure: GHCi crash | Test Case:
Blocked By: | Blocking:
Related Tickets: | Differential Rev(s): Phab:D1683
Wiki Page: |
-------------------------------------+-------------------------------------
Comment (by Tamar Christina
#11234: GHCi on Windows segfaults -------------------------------------+------------------------------------- Reporter: Phyx- | Owner: Phyx- Type: bug | Status: closed Priority: highest | Milestone: 8.0.1 Component: Runtime System | Version: 7.11 Resolution: fixed | Keywords: Operating System: Windows | Architecture: | Unknown/Multiple Type of failure: GHCi crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D1683 Wiki Page: | -------------------------------------+------------------------------------- Changes (by Phyx-): * status: patch => closed * resolution: => fixed Comment: That should be it for the startup segfault. `prog003` seems to run on HEAD already. So that must have been fix by some other commit. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11234#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#11234: GHCi on Windows segfaults -------------------------------------+------------------------------------- Reporter: Phyx- | Owner: Phyx- Type: bug | Status: closed Priority: highest | Milestone: 8.0.1 Component: Runtime System | Version: 7.11 Resolution: fixed | Keywords: Operating System: Windows | Architecture: | Unknown/Multiple Type of failure: GHCi crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D1683 Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): Tamar, THANK YOU for sorting this out. Really helpful. Simon -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11234#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#11234: GHCi on Windows segfaults -------------------------------------+------------------------------------- Reporter: Phyx- | Owner: Phyx- Type: bug | Status: closed Priority: highest | Milestone: 8.0.1 Component: Runtime System | Version: 7.11 Resolution: fixed | Keywords: Operating System: Windows | Architecture: | Unknown/Multiple Type of failure: GHCi crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D1683 Wiki Page: | -------------------------------------+------------------------------------- Comment (by Phyx-): Cheers :) -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11234#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
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