| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.17 755/772] net: ipa: fix page free in ipa_endpoint_replenish_one() | Date | Tue, 7 Jun 2022 19:05:47 +0200 |
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From: Alex Elder <elder@linaro.org>
commit 70132763d5d2e94cd185e3aa92ac6a3ba89068fa upstream.
Currently the (possibly compound) pages 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_replenish_one() to use put_page() instead.
Fixes: 6a606b90153b8 ("net: ipa: allocate transaction in replenish loop") Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/net/ipa/ipa_endpoint.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ipa/ipa_endpoint.c +++ b/drivers/net/ipa/ipa_endpoint.c @@ -1062,7 +1062,7 @@ static int ipa_endpoint_replenish_one(st err_trans_free: gsi_trans_free(trans); err_free_pages: - __free_pages(page, get_order(IPA_RX_BUFFER_SIZE)); + put_page(page); return -ENOMEM; }
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