add rxrpc patch.

diff --git a/queue-6.18/rxrpc-also-unshare-data-response-packets-when-paged-frags-are-present.patch b/queue-6.18/rxrpc-also-unshare-data-response-packets-when-paged-frags-are-present.patch
new file mode 100644 (file)
index 0000000..af4c605
--- /dev/null
+++ b/queue-6.18/rxrpc-also-unshare-data-response-packets-when-paged-frags-are-present.patch
@@ -0,0 +1,61 @@
+From aa54b1d27fe0c2b78e664a34fd0fdf7cd1960d71 Mon Sep 17 00:00:00 2001
+From: Hyunwoo Kim <imv4bel@gmail.com>
+Date: Fri, 8 May 2026 17:53:09 +0900
+Subject: rxrpc: Also unshare DATA/RESPONSE packets when paged frags are present
+
+From: Hyunwoo Kim <imv4bel@gmail.com>
+
+commit aa54b1d27fe0c2b78e664a34fd0fdf7cd1960d71 upstream.
+
+The DATA-packet handler in rxrpc_input_call_event() and the RESPONSE
+handler in rxrpc_verify_response() copy the skb to a linear one before
+calling into the security ops only when skb_cloned() is true.  An skb
+that is not cloned but still carries externally-owned paged fragments
+(e.g. SKBFL_SHARED_FRAG set by splice() into a UDP socket via
+__ip_append_data, or a chained skb_has_frag_list()) falls through to
+the in-place decryption path, which binds the frag pages directly into
+the AEAD/skcipher SGL via skb_to_sgvec().
+
+Extend the gate to also unshare when skb_has_frag_list() or
+skb_has_shared_frag() is true.  This catches the splice-loopback vector
+and other externally-shared frag sources while preserving the
+zero-copy fast path for skbs whose frags are kernel-private (e.g. NIC
+page_pool RX, GRO).  The OOM/trace handling already in place is reused.
+
+Fixes: d0d5c0cd1e71 ("rxrpc: Use skb_unshare() rather than skb_cow_data()")
+Cc: stable@vger.kernel.org
+Signed-off-by: Hyunwoo Kim <imv4bel@gmail.com>
+Reviewed-by: Jiayuan Chen <jiayuan.chen@linux.dev>
+Acked-by: David Howells <dhowells@redhat.com>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ net/rxrpc/call_event.c |    4 +++-
+ net/rxrpc/conn_event.c |    3 ++-
+ 2 files changed, 5 insertions(+), 2 deletions(-)
+
+--- a/net/rxrpc/call_event.c
++++ b/net/rxrpc/call_event.c
+@@ -334,7 +334,9 @@ bool rxrpc_input_call_event(struct rxrpc
+ 
+                       if (sp->hdr.type == RXRPC_PACKET_TYPE_DATA &&
+                           sp->hdr.securityIndex != 0 &&
+-                          skb_cloned(skb)) {
++                          (skb_cloned(skb) ||
++                           skb_has_frag_list(skb) ||
++                           skb_has_shared_frag(skb))) {
+                               /* Unshare the packet so that it can be
+                                * modified by in-place decryption.
+                                */
+--- a/net/rxrpc/conn_event.c
++++ b/net/rxrpc/conn_event.c
+@@ -245,7 +245,8 @@ static int rxrpc_verify_response(struct
+ {
+       int ret;
+ 
+-      if (skb_cloned(skb)) {
++      if (skb_cloned(skb) || skb_has_frag_list(skb) ||
++          skb_has_shared_frag(skb)) {
+               /* Copy the packet if shared so that we can do in-place
+                * decryption.
+                */

diff --git a/queue-6.18/series b/queue-6.18/series
new file mode 100644 (file)
index 0000000..c5932f2
--- /dev/null
+++ b/queue-6.18/series
@@ -0,0 +1 @@
+rxrpc-also-unshare-data-response-packets-when-paged-frags-are-present.patch

diff --git a/queue-7.0/rxrpc-also-unshare-data-response-packets-when-paged-frags-are-present.patch b/queue-7.0/rxrpc-also-unshare-data-response-packets-when-paged-frags-are-present.patch
new file mode 100644 (file)
index 0000000..c06a383
--- /dev/null
+++ b/queue-7.0/rxrpc-also-unshare-data-response-packets-when-paged-frags-are-present.patch
@@ -0,0 +1,68 @@
+From aa54b1d27fe0c2b78e664a34fd0fdf7cd1960d71 Mon Sep 17 00:00:00 2001
+From: Hyunwoo Kim <imv4bel@gmail.com>
+Date: Fri, 8 May 2026 17:53:09 +0900
+Subject: rxrpc: Also unshare DATA/RESPONSE packets when paged frags are present
+
+From: Hyunwoo Kim <imv4bel@gmail.com>
+
+commit aa54b1d27fe0c2b78e664a34fd0fdf7cd1960d71 upstream.
+
+The DATA-packet handler in rxrpc_input_call_event() and the RESPONSE
+handler in rxrpc_verify_response() copy the skb to a linear one before
+calling into the security ops only when skb_cloned() is true.  An skb
+that is not cloned but still carries externally-owned paged fragments
+(e.g. SKBFL_SHARED_FRAG set by splice() into a UDP socket via
+__ip_append_data, or a chained skb_has_frag_list()) falls through to
+the in-place decryption path, which binds the frag pages directly into
+the AEAD/skcipher SGL via skb_to_sgvec().
+
+Extend the gate to also unshare when skb_has_frag_list() or
+skb_has_shared_frag() is true.  This catches the splice-loopback vector
+and other externally-shared frag sources while preserving the
+zero-copy fast path for skbs whose frags are kernel-private (e.g. NIC
+page_pool RX, GRO).  The OOM/trace handling already in place is reused.
+
+Fixes: d0d5c0cd1e71 ("rxrpc: Use skb_unshare() rather than skb_cow_data()")
+Cc: stable@vger.kernel.org
+Signed-off-by: Hyunwoo Kim <imv4bel@gmail.com>
+Reviewed-by: Jiayuan Chen <jiayuan.chen@linux.dev>
+Acked-by: David Howells <dhowells@redhat.com>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ net/rxrpc/call_event.c | 4 +++-
+ net/rxrpc/conn_event.c | 3 ++-
+ 2 files changed, 5 insertions(+), 2 deletions(-)
+
+diff --git a/net/rxrpc/call_event.c b/net/rxrpc/call_event.c
+index fdd683261226..2b19b252225e 100644
+--- a/net/rxrpc/call_event.c
++++ b/net/rxrpc/call_event.c
+@@ -334,7 +334,9 @@ bool rxrpc_input_call_event(struct rxrpc_call *call)
+ 
+                       if (sp->hdr.type == RXRPC_PACKET_TYPE_DATA &&
+                           sp->hdr.securityIndex != 0 &&
+-                          skb_cloned(skb)) {
++                          (skb_cloned(skb) ||
++                           skb_has_frag_list(skb) ||
++                           skb_has_shared_frag(skb))) {
+                               /* Unshare the packet so that it can be
+                                * modified by in-place decryption.
+                                */
+diff --git a/net/rxrpc/conn_event.c b/net/rxrpc/conn_event.c
+index a2130d25aaa9..442414d90ba1 100644
+--- a/net/rxrpc/conn_event.c
++++ b/net/rxrpc/conn_event.c
+@@ -245,7 +245,8 @@ static int rxrpc_verify_response(struct rxrpc_connection *conn,
+ {
+       int ret;
+ 
+-      if (skb_cloned(skb)) {
++      if (skb_cloned(skb) || skb_has_frag_list(skb) ||
++          skb_has_shared_frag(skb)) {
+               /* Copy the packet if shared so that we can do in-place
+                * decryption.
+                */
+-- 
+2.54.0
+

diff --git a/queue-7.0/series b/queue-7.0/series
new file mode 100644 (file)
index 0000000..c5932f2
--- /dev/null
+++ b/queue-7.0/series
@@ -0,0 +1 @@
+rxrpc-also-unshare-data-response-packets-when-paged-frags-are-present.patch