From 0ec56645e54518a42ae70acc94653d3ac294ffc1 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Thu, 26 May 2022 10:23:13 -0500 Subject: [PATCH] net: ipa: fix page free in ipa_endpoint_trans_release() commit 155c0c90bca918de6e4327275dfc1d97fd604115 upstream. Currently the (possibly compound) page used for receive buffers are freed using __free_pages(). But according to this comment above the definition of that function, that's wrong: If you want to use the page's reference count to decide when to free the allocation, you should allocate a compound page, and use put_page() instead of __free_pages(). Convert the call to __free_pages() in ipa_endpoint_trans_release() to use put_page() instead. Fixes: ed23f02680caa ("net: ipa: define per-endpoint receive buffer size") Signed-off-by: Alex Elder Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman --- drivers/net/ipa/ipa_endpoint.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c index 55322800ba58e..158235f649fed 100644 --- a/drivers/net/ipa/ipa_endpoint.c +++ b/drivers/net/ipa/ipa_endpoint.c @@ -1385,11 +1385,8 @@ void ipa_endpoint_trans_release(struct ipa_endpoint *endpoint, } else { struct page *page = trans->data; - if (page) { - u32 buffer_size = endpoint->data->rx.buffer_size; - - __free_pages(page, get_order(buffer_size)); - } + if (page) + put_page(page); } } -- 2.47.3