tree d73ada91776eaaf7f87424c6514b0eeab7c1b31a
parent ee752da74f5d07cf441f8d42455c4241d6051ae5
author Kevin Wolf <kwolf@redhat.com> 1307461881 +0200
committer Kevin Wolf <kwolf@redhat.com> 1308145400 +0200

Allow nested qemu_bh_poll() after BH deletion

Without this, qemu segfaults when a BH handler first deletes its BH and
then calls another function which involves a nested qemu_bh_poll() call.

This can be reproduced by generating an I/O error (e.g. with blkdebug) on
an IDE device and using rerror/werror=stop to stop the VM. When continuing
the VM, qemu segfaults.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>