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[Qemu-devel] [Bug 1299858] Re: qemu all apps crash on OS X 10.6.8


From: Peter Maydell
Subject: [Qemu-devel] [Bug 1299858] Re: qemu all apps crash on OS X 10.6.8
Date: Tue, 01 Apr 2014 09:44:56 -0000

Unfortunately the gthreads backend is pretty strongly disrecommended --
it is really mostly there as a debug convenience when working with the
block code, as there are some bad interactions between signal masking
and coroutine switches that mean it's likely to cause problems when
using QEMU proper.

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https://bugs.launchpad.net/bugs/1299858

Title:
  qemu all apps crash on OS X 10.6.8

Status in QEMU:
  New

Bug description:
  qemu-2.0.0-rc0 (and 1.7.1) crashes with SIGABORT in all apps when
  configured with --with-coroutine=sigaltstack (which is what configure
  selects by default) but all  run fine if configured with --with-
  coroutine=gthread.

  Crash is at line 253 (last line of Coroutine
  *qemu_coroutine_new(void)) in coroutine-sigaltstack.c in 2.0.0-rc0
  tarball.

  Platform is OS X 10.6.8 (Darwin Kernel Version 10.8.0), compiler gcc
  4.2.1

  Sorry for the sparse report but I'm short on time today.

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