github/kata-containers
1
0
Fork 1
mirror of https://github.com/kata-containers/kata-containers.git synced 2025-06-23 22:17:19 +00:00
Code Issues Projects Releases Wiki Activity

dragonball: fix EPOLLHUP/EPOLLERR events handling in vsock

Browse Source 
1. EPOLLHUP events also need to be read and will be got len 0.
2. We should kill the connection when EPOLLERR events are received.

Signed-off-by: Tim Zhang <tim@hyper.sh>
Signed-off-by: Fupan Li <fupan.lfp@antgroup.com>
This commit is contained in:
Tim Zhang 2024-04-16 20:09:57 +08:00
parent 7b11fd2546
commit 221c5b51fe
1 changed files with 15 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
src/dragonball/src/dbs_virtio_devices/src/vsock/csm/connection.rs
View File

@ -460,7 +460,8 @@ impl VsockEpollListener for VsockConnection {
/// Notify the connection about an event (or set of events) that it was
/// interested in.
fn notify(&mut self, evset: epoll::Events) {
if evset.contains(epoll::Events::EPOLLIN) {
// EPOLLHUP also needs to be read and will be got len 0
if evset.contains(epoll::Events::EPOLLIN) || evset.contains(epoll::Events::EPOLLHUP) {
// Data can be read from the host stream. Setting a Rw pending
// indication, so that the muxer will know to call `recv_pkt()`
// later.
@ -514,6 +515,19 @@ impl VsockEpollListener for VsockConnection {
self.pending_rx.insert(PendingRx::CreditUpdate);
}
}
// The host stream has encountered an error. We'll kill this
// connection.
if evset.contains(epoll::Events::EPOLLERR)
&& !evset.contains(epoll::Events::EPOLLIN)
&& !evset.contains(epoll::Events::EPOLLOUT)
{
warn!(
"vsock: connection received EPOLLERR event: lp={}, pp={}",
self.local_port, self.peer_port
);
self.kill();
}
}
}