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[Bug 1472650] Re: [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

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** Summary changed:

- [arm64] lxd crashes on startup
+ [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

** Package changed: lxd (Ubuntu) => gcc-4.9 (Ubuntu)

** Changed in: gcc-4.9 (Ubuntu)
       Status: New => Confirmed

** Also affects: gcc-4.8 (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: gcc-4.8 (Ubuntu)
       Status: New => Confirmed

-- 
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https://bugs.launchpad.net/bugs/1472650

Title:
  [arm64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4

Status in gcc-4.8 package in Ubuntu:
  Confirmed
Status in gcc-4.9 package in Ubuntu:
  Confirmed

Bug description:
  lxd 0.12-0ubuntu2
  libgo7/5.1.1-12ubuntu1

  Jul 08 00:11:16 vital-beggar systemd[1]: Starting Container hypervisor based on LXC...
  -- Subject: Unit lxd.service has begun start-up
  -- Defined-By: systemd
  -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
  -- 
  -- Unit lxd.service has begun starting up.
  Jul 08 00:11:16 vital-beggar lxd[1712]: p=0xffff98d18000
  Jul 08 00:11:16 vital-beggar lxd[1712]: fatal error: runtime_lfstackpush: invalid pointer
  Jul 08 00:11:16 vital-beggar lxd[1712]: runtime stack:
  Jul 08 00:11:16 vital-beggar lxd[1712]: runtime_dopanic
  Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/panic.c:135
  Jul 08 00:11:16 vital-beggar lxd[1712]: runtime_throw
  Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/panic.c:193
  Jul 08 00:11:16 vital-beggar lxd[1712]: runtime.lfstackpush
  Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/lfstack.goc:40
  Jul 08 00:11:16 vital-beggar lxd[1712]: getempty
  Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/mgc0.c:1377
  Jul 08 00:11:16 vital-beggar lxd[1712]: enqueue1
  Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/mgc0.c:1255
  Jul 08 00:11:16 vital-beggar lxd[1712]: markroot
  Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/mgc0.c:1285
  Jul 08 00:11:16 vital-beggar lxd[1712]: runtime_parfordo
  Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/parfor.c:88
  Jul 08 00:11:16 vital-beggar lxd[1712]: gc
  Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/mgc0.c:2266
  Jul 08 00:11:16 vital-beggar lxd[1712]: mgc
  Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/mgc0.c:2211
  Jul 08 00:11:16 vital-beggar lxd[1712]: runtime_mstart
  Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/proc.c:1076
  Jul 08 00:11:16 vital-beggar lxd[1712]: goroutine 16 [garbage collection]:
  Jul 08 00:11:16 vital-beggar systemd[1]: lxd.service: Main process exited, code=exited, status=2/INVALIDARGUMENT
  Jul 08 00:11:16 vital-beggar systemd[1]: lxd.service: Unit entered failed state.
  Jul 08 00:11:16 vital-beggar systemd[1]: lxd.service: Failed with result 'exit-code'.
  Jul 08 00:11:16 vital-beggar lxd[1712]: runtime_mcall
  Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/proc.c:295
  Jul 08 00:11:16 vital-beggar lxd[1712]: runtime_gc
  Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/mgc0.c:2187
  Jul 08 00:11:16 vital-beggar lxd[1712]: runtime_mallocgc
  Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/malloc.goc:259
  Jul 08 00:11:16 vital-beggar lxd[1712]: :0
  Jul 08 00:11:16 vital-beggar lxd[1712]: :0
  Jul 08 00:11:16 vital-beggar lxd[1712]: runtime_main
  Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/proc.c:626
  Jul 08 00:11:16 vital-beggar lxd[1712]: goroutine 17 [runnable]:
  Jul 08 00:11:16 vital-beggar lxd[1712]: kickoff
  Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/proc.c:232
  Jul 08 00:11:16 vital-beggar lxd[1712]: created by runtime_main
  Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/proc.c:598
  Jul 08 00:11:16 vital-beggar lxd[1712]: goroutine 18 [runnable]:
  Jul 08 00:11:16 vital-beggar lxd[1712]: kickoff
  Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/proc.c:232
  Jul 08 00:11:16 vital-beggar lxd[1712]: created by runtime_createfing
  Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/mgc0.c:2572
  Jul 08 00:11:16 vital-beggar lxd[1712]: goroutine 19 [runnable]:
  Jul 08 00:11:16 vital-beggar lxd[1712]: kickoff
  Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/runtime/proc.c:232
  Jul 08 00:11:16 vital-beggar lxd[1712]: created by os_signal..import
  Jul 08 00:11:16 vital-beggar lxd[1712]: ../../../src/libgo/go/os/signal/signal_unix.go:25
  Jul 08 00:11:16 vital-beggar systemd[1]: lxd.service: Service hold-off time over, scheduling restart.
  Jul 08 00:11:16 vital-beggar systemd[1]: lxd.service: Start request repeated too quickly.
  Jul 08 00:11:16 vital-beggar systemd[1]: Failed to start Container hypervisor based on LXC.
  -- Subject: Unit lxd.service has failed
  -- Defined-By: systemd
  -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
  -- 
  -- Unit lxd.service has failed.
  -- 
  -- The result is failed.
  Jul 08 00:11:16 vital-beggar systemd[1]: lxd.service: Unit entered failed state.
  Jul 08 00:11:16 vital-beggar systemd[1]: lxd.service: Failed with result 'start-limit'.

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