linux-kernel - [PATCH net v2 0/2] net: ipa: fix page free in two spots

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Message-Id: <20220526152314.1405629-1-elder@linaro.org>
Date:   Thu, 26 May 2022 10:23:12 -0500
From:   Alex Elder <elder@...aro.org>
To:     davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com
Cc:     mka@...omium.org, evgreen@...omium.org, bjorn.andersson@...aro.org,
        quic_cpratapa@...cinc.com, quic_avuyyuru@...cinc.com,
        quic_jponduru@...cinc.com, quic_subashab@...cinc.com,
        elder@...nel.org, netdev@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH net v2 0/2] net: ipa: fix page free in two spots

When a receive buffer is not wrapped in an SKB and passed to the
network stack, the (compound) page gets freed within the IPA driver.
This is currently quite rare.

The pages are freed using __free_pages(), but they should instead be
freed using page_put().  This series fixes this, in two spots.

These patches work for the current linus/master branch, but won't
apply cleanly to earlier stable branches.  (Nevertheless, the fix is
a trivial substitution everwhere __free_pages() is called.)

Version 2 is just rebased on today's net/master branch.

					-Alex

Alex Elder (2):
  net: ipa: fix page free in ipa_endpoint_trans_release()
  net: ipa: fix page free in ipa_endpoint_replenish_one()

 drivers/net/ipa/ipa_endpoint.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

-- 
2.32.0