From: Christophe JAILLET christophe.jaillet@wanadoo.fr

commit 0b0226be3a52dadd965644bc52a807961c2c26df upstream.

Memory allocated by 'vmbus_alloc_ring()' at the beginning of the probe function is never freed in the error handling path.

Add the missing 'vmbus_free_ring()' call.

Note that it is already freed in the .remove function.

Fixes: cdfa835c6e5e ("uio_hv_generic: defer opening vmbus until first use") Cc: stable stable@vger.kernel.org Signed-off-by: Christophe JAILLET christophe.jaillet@wanadoo.fr Link: https://lore.kernel.org/r/0d86027b8eeed8e6360bc3d52bcdb328ff9bdca1.162054405... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org [Shivani: Modified to apply on 5.10.y] Signed-off-by: Shivani Agarwal shivani.agarwal@broadcom.com --- drivers/uio/uio_hv_generic.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/uio/uio_hv_generic.c b/drivers/uio/uio_hv_generic.c index 6625d340f..865a5b289 100644 --- a/drivers/uio/uio_hv_generic.c +++ b/drivers/uio/uio_hv_generic.c @@ -306,7 +306,7 @@ hv_uio_probe(struct hv_device *dev, pdata->recv_buf = vzalloc(RECV_BUFFER_SIZE); if (pdata->recv_buf == NULL) { ret = -ENOMEM; - goto fail_close; + goto fail_free_ring; }

ret = vmbus_establish_gpadl(channel, pdata->recv_buf, @@ -366,6 +366,8 @@ hv_uio_probe(struct hv_device *dev,

fail_close: hv_uio_cleanup(dev, pdata); +fail_free_ring: + vmbus_free_ring(dev->channel);

return ret; }