This is a note to let you know that I've just added the patch titled
net: ipa: fix page free in ipa_endpoint_trans_release()
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-ipa-fix-page-free-in-ipa_endpoint_trans_release.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 155c0c90bca918de6e4327275dfc1d97fd604115 Mon Sep 17 00:00:00 2001
From: Alex Elder <elder@xxxxxxxxxx>
Date: Thu, 26 May 2022 10:23:13 -0500
Subject: net: ipa: fix page free in ipa_endpoint_trans_release()
From: Alex Elder <elder@xxxxxxxxxx>
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 <elder@xxxxxxxxxx>
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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
@@ -1389,7 +1389,7 @@ void ipa_endpoint_trans_release(struct i
struct page *page = trans->data;
if (page)
- __free_pages(page, get_order(IPA_RX_BUFFER_SIZE));
+ put_page(page);
}
}
Patches currently in stable-queue which might be from elder@xxxxxxxxxx are
queue-5.15/net-ipa-ignore-endianness-if-there-is-no-header.patch
queue-5.15/net-ipa-fix-page-free-in-ipa_endpoint_replenish_one.patch
queue-5.15/net-ipa-fix-page-free-in-ipa_endpoint_trans_release.patch
