From: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
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@xxxxxxxxxxxxxxx>
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
Link: https://lore.kernel.org/r/0d86027b8eeed8e6360bc3d52bcdb328ff9bdca1.1620544055.git.christophe.jaillet@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/uio/uio_hv_generic.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/uio/uio_hv_generic.c
+++ b/drivers/uio/uio_hv_generic.c
@@ -291,7 +291,7 @@ 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,
@@ -351,6 +351,8 @@ hv_uio_probe(struct hv_device *dev,
fail_close:
hv_uio_cleanup(dev, pdata);
+fail_free_ring:
+ vmbus_free_ring(dev->channel);
return ret;
}
