Since we handle close async in a bh, do_write and thus write can get called after receiving a close event. This patch adds a check to the usb-redir write callback to not call qemu_chr_fe_write on a closed backend.
Signed-off-by: Hans de Goede <hdego...@redhat.com> --- usb-redir.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/usb-redir.c b/usb-redir.c index 24fdd31..fb91c92 100644 --- a/usb-redir.c +++ b/usb-redir.c @@ -225,6 +225,10 @@ static int usbredir_write(void *priv, uint8_t *data, int count) { USBRedirDevice *dev = priv; + if (!dev->cs->opened) { + return 0; + } + return qemu_chr_fe_write(dev->cs, data, count); } -- 1.7.7.3