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authorZhike Wang <wangzk320@163.com>2019-11-13 19:03:28 +0800
committerDavid Marchand <david.marchand@redhat.com>2019-11-15 14:25:48 +0100
commit1407b0752eee2353160701d0182c7e911ccb538a (patch)
tree6c7a190af5a0be29822dacb29d9959465d6e94d3 /MAINTAINERS
parentf43d3dbbd90c9e195d26d18ac7da9ca2854c3f1e (diff)
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vhost: fix vring requests validation broken if no FDHEADmaster
When VHOST_USER_VRING_NOFD_MASK is set, the fd_num is 0, so validate_msg_fds() will return error. In this case, the negotiation of vring message between vhost user front end and back end would fail, and as a result, vhost user link could NOT be up. How to reproduce: 1.Run dpdk testpmd insides VM, which locates at host with ovs+dpdk. 2.Notice that inside ovs there are endless logs regarding failure to handle VHOST_USER_SET_VRING_CALL, and link of vm could NOT be up. Fixes: bf472259dde6 ("vhost: fix possible denial of service by leaking FDs") Cc: stable@dpdk.org Signed-off-by: Zhike Wang <wangzk320@163.com> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com> Reviewed-by: Tiwei Bie <tiwei.bie@intel.com>
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