When a program that has a virtio port opened and blocked for a write operation, a port hot-unplug event will later led to a crash when SIGTERM was sent to the program. Fix that.
Signed-off-by: Amit Shah <[email protected]> --- drivers/char/virtio_console.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index e3fb529..942a982 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -529,6 +529,10 @@ static bool will_write_block(struct port *port) { bool ret; + if (!port->guest_connected) { + /* Port got hot-unplugged. Let's exit. */ + return false; + } if (!port->host_connected) return true; -- 1.7.0.1 _______________________________________________ Virtualization mailing list [email protected] https://lists.linux-foundation.org/mailman/listinfo/virtualization
