On 04/27/2018 05:19 PM, xiangxia.m....@gmail.com wrote:
From: Tonghao Zhang <xiangxia.m....@gmail.com>
When qemu close the unix socket fd of the vhostuser as a
server, and then immediately delete the vhostuser port on
openvswitch. There will be a deadlock.
A thread (fdset event thread): B thread:
1. fdset_event_dispatch rte_vhost_driver_unregister
2. set the fd busy to 1. lock vsocket->conn_mutex
3. vhost_user_read_cb fdset_del waits busy changed to 0.
4. vhost peer closed, remove the
conn from vsocket->conn_list:
lock vsocket->conn_mutex
5. set the fd busy to 0
Fixes: 65388b43 ("vhost: fix fd leaks for vhost-user server mode")
Cc: sta...@dpdk.org
Cc: Yuanhan Liu <y...@fridaylinux.org>
Signed-off-by: Tonghao Zhang <xiangxia.m....@gmail.com>
---
lib/librte_vhost/fd_man.c | 32 ++++++++++++++++++++++++++++++++
lib/librte_vhost/fd_man.h | 1 +
lib/librte_vhost/socket.c | 13 ++++++++++++-
3 files changed, 45 insertions(+), 1 deletion(-)
Applied to dpdk-next-virtio/master.
Please next time add a cover-letter and run check-git-log.sh and
checkpatch.sh scripts before submitting.
Thanks!
Maxime
