All of lore.kernel.org
 help / color / mirror / Atom feed
From: Alex Elder <elder@linaro.org>
To: davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
	pabeni@redhat.com
Cc: mka@chromium.org, evgreen@chromium.org,
	bjorn.andersson@linaro.org, quic_cpratapa@quicinc.com,
	quic_avuyyuru@quicinc.com, quic_jponduru@quicinc.com,
	quic_subashab@quicinc.com, elder@kernel.org,
	netdev@vger.kernel.org, linux-arm-msm@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH net 2/2] net: ipa: fix page free in ipa_endpoint_replenish_one()
Date: Sat, 21 May 2022 19:59:59 -0500	[thread overview]
Message-ID: <20220522005959.1175181-3-elder@linaro.org> (raw)
In-Reply-To: <20220522005959.1175181-1-elder@linaro.org>

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>
---
 drivers/net/ipa/ipa_endpoint.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c
index 675b7135644b8..dac4845cf596c 100644
--- a/drivers/net/ipa/ipa_endpoint.c
+++ b/drivers/net/ipa/ipa_endpoint.c
@@ -1062,7 +1062,7 @@ static int ipa_endpoint_replenish_one(struct ipa_endpoint *endpoint,
 
 	ret = gsi_trans_page_add(trans, page, len, offset);
 	if (ret)
-		__free_pages(page, get_order(buffer_size));
+		put_page(page);
 	else
 		trans->data = page;	/* transaction owns page now */
 
-- 
2.32.0


  parent reply	other threads:[~2022-05-22  1:00 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-22  0:59 [PATCH net 0/2] net: ipa: fix page free in two spots Alex Elder
2022-05-22  0:59 ` [PATCH net 1/2] net: ipa: fix page free in ipa_endpoint_trans_release() Alex Elder
2022-05-22  0:59 ` Alex Elder [this message]
2022-05-22 12:46 ` [PATCH net 0/2] net: ipa: fix page free in two spots Alex Elder
2022-05-22 20:00 ` David Miller

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20220522005959.1175181-3-elder@linaro.org \
    --to=elder@linaro.org \
    --cc=bjorn.andersson@linaro.org \
    --cc=davem@davemloft.net \
    --cc=edumazet@google.com \
    --cc=elder@kernel.org \
    --cc=evgreen@chromium.org \
    --cc=kuba@kernel.org \
    --cc=linux-arm-msm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mka@chromium.org \
    --cc=netdev@vger.kernel.org \
    --cc=pabeni@redhat.com \
    --cc=quic_avuyyuru@quicinc.com \
    --cc=quic_cpratapa@quicinc.com \
    --cc=quic_jponduru@quicinc.com \
    --cc=quic_subashab@quicinc.com \
    --subject='Re: [PATCH net 2/2] net: ipa: fix page free in ipa_endpoint_replenish_one()' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.