| commit | 7887f6201ff3fdc9a142eba14d61c563adb57596 | |
| author | Kevin Wolf <kwolf@redhat.com> | |
| Tue, 7 Jun 2011 15:51:21 +0000 (7 17:51 +0200) | ||
| committer | Kevin Wolf <kwolf@redhat.com> | |
| Wed, 15 Jun 2011 13:43:20 +0000 (15 15:43 +0200) | ||
| tree | d73ada91776eaaf7f87424c6514b0eeab7c1b31a | treesnapshot (tar.gz zip) |
| parent | ee752da74f5d07cf441f8d42455c4241d6051ae5 | commitdiff |
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>
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>
| async.c | diffblobblamehistory |