From: Sai Pavan Boddu <sai.pavan.bo...@xilinx.com> In tcp_chr_sync_read function, there is a possibility of socket disconnection during blocking read, then tcp_chr_hup function would clean up the qio channel pointers(i.e ioc, sioc).
Signed-off-by: Sai Pavan Boddu <sai.pavan.bo...@xilinx.com> Message-Id: <1587289900-29485-1-git-send-email-sai.pavan.bo...@xilinx.com> Reviewed-by: Daniel P. Berrangé <berra...@redhat.com> Signed-off-by: Paolo Bonzini <pbonz...@redhat.com> --- chardev/char-socket.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/chardev/char-socket.c b/chardev/char-socket.c index db253d4024..dd3d3ed8d6 100644 --- a/chardev/char-socket.c +++ b/chardev/char-socket.c @@ -550,7 +550,9 @@ static int tcp_chr_sync_read(Chardev *chr, const uint8_t *buf, int len) qio_channel_set_blocking(s->ioc, true, NULL); size = tcp_chr_recv(chr, (void *) buf, len); - qio_channel_set_blocking(s->ioc, false, NULL); + if (s->state != TCP_CHARDEV_STATE_DISCONNECTED) { + qio_channel_set_blocking(s->ioc, false, NULL); + } if (size == 0) { /* connection closed */ tcp_chr_disconnect(chr); -- 2.26.2