tree dce8f296c822d08bb22b65e134d8235e6e6c659f
parent 59ed3fe8d334e3247abb703b8f2eb7c0ac7afc62
author Markus Armbruster <armbru@redhat.com> 1543308103 +0100
committer Peter Maydell <peter.maydell@linaro.org> 1543343972 +0000

vfio-helpers: Fix qemu_vfio_open_pci() crash

qemu_vfio_open_common() initializes s->lock only after passing s to
qemu_vfio_dma_map() via qemu_vfio_init_ramblock().
qemu_vfio_dma_map() tries to lock the uninitialized lock and crashes.

Fix by initializing s->lock first.

RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=1645840
Fixes: 418026ca43bc2626db092d7558258f9594366f28
Cc: qemu-stable@nongnu.org
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20181127084143.1113-1-armbru@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>