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FAILED: patch "[PATCH] rxrpc: Fix key quota calculation for multitoken keys" failed to apply to 6.12-stable tree

PATCH New [email protected] 2 participants 2 messages Apr 13

Subsystems (3)
Networking Stable branch Rxrpc sockets (AF_RXRPC)
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author maintainer
#0 lore raw

The patch below does not apply to the 6.12-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.12.y
git checkout FETCH_HEAD
git cherry-pick -x bdbfead6d38979475df0c2f4bad2b19394fe9bdc
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<[email protected]>' --in-reply-to '2026041335-acetone-cesspool-822e@gregkh' --subject-prefix 'PATCH 6.12.y' HEAD^..

Possible dependencies:

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From bdbfead6d38979475df0c2f4bad2b19394fe9bdc Mon Sep 17 00:00:00 2001
From: David Howells <[email protected]>
Date: Wed, 8 Apr 2026 13:12:29 +0100
Subject: [PATCH] rxrpc: Fix key quota calculation for multitoken keys

In the rxrpc key preparsing, every token extracted sets the proposed quota value, but for multitoken keys, this will overwrite the previous proposed quota, losing it.

Fix this by adding to the proposed quota instead.

Fixes 8a7a3eb4ddbe ("KEYS: RxRPC: Use key preparsing")
Closes https://sashiko.dev/#/patchset/20260319150150.4189381-1-dhowells%40redhat.com
Signed-off-by David Howells <[email protected]>
cc Marc Dionne <[email protected]>
cc Jeffrey Altman <[email protected]>
cc Simon Horman <[email protected]>
cc [email protected]
cc [email protected]
Link https://patch.msgid.link/[email protected] open here
Signed-off-by Jakub Kicinski <[email protected]>
net/rxrpc/key.c +4 -3
index 85078114b2dd..af403f0ccab5 100644
@@ -72,7 +72,7 @@ static int rxrpc_preparse_xdr_rxkad(struct key_preparsed_payload *prep,
 		return -EKEYREJECTED;
 
 	plen = sizeof(*token) + sizeof(*token->kad) + tktlen;
-	prep->quotalen = datalen + plen;
+	prep->quotalen += datalen + plen;
 
 	plen -= sizeof(*token);
 	token = kzalloc_obj(*token);

@@ -199,7 +199,7 @@ static int rxrpc_preparse_xdr_yfs_rxgk(struct key_preparsed_payload *prep,
 	}
 
 	plen = sizeof(*token) + sizeof(*token->rxgk) + tktlen + keylen;
-	prep->quotalen = datalen + plen;
+	prep->quotalen += datalen + plen;
 
 	plen -= sizeof(*token);
 	token = kzalloc_obj(*token);

@@ -460,6 +460,7 @@ static int rxrpc_preparse(struct key_preparsed_payload *prep)
 	memcpy(&kver, prep->data, sizeof(kver));
 	prep->data += sizeof(kver);
 	prep->datalen -= sizeof(kver);
+	prep->quotalen = 0;
 
 	_debug("KEY I/F VERSION: %u", kver);
 

@@ -497,7 +498,7 @@ static int rxrpc_preparse(struct key_preparsed_payload *prep)
 		goto error;
 
 	plen = sizeof(*token->kad) + v1->ticket_length;
-	prep->quotalen = plen + sizeof(*token);
+	prep->quotalen += plen + sizeof(*token);
 
 	ret = -ENOMEM;
 	token = kzalloc_obj(*token);
maintainer
#1 lore raw

PATCH 1/1 rxrpc: Fix key quota calculation for multitoken keys

From: David Howells <[email protected]>

[ Upstream commit bdbfead6d38979475df0c2f4bad2b19394fe9bdc ]

In the rxrpc key preparsing, every token extracted sets the proposed quota value, but for multitoken keys, this will overwrite the previous proposed quota, losing it.

Fix this by adding to the proposed quota instead.

Fixes 8a7a3eb4ddbe ("KEYS: RxRPC: Use key preparsing")
Closes https://sashiko.dev/#/patchset/20260319150150.4189381-1-dhowells%40redhat.com
Signed-off-by David Howells <[email protected]>
cc Marc Dionne <[email protected]>
cc Jeffrey Altman <[email protected]>
cc Simon Horman <[email protected]>
cc [email protected]
cc [email protected]
Link https://patch.msgid.link/[email protected] open here
Signed-off-by Jakub Kicinski <[email protected]>
[ dropped hunk for rxrpc_preparse_xdr_yfs_rxgk() ]
Signed-off-by Sasha Levin <[email protected]>
---
 net/rxrpc/key.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
net/rxrpc/key.c +3 -2
index 33e8302a79e33..215e661676381 100644
@@ -72,7 +72,7 @@ static int rxrpc_preparse_xdr_rxkad(struct key_preparsed_payload *prep,
 		return -EKEYREJECTED;
 
 	plen = sizeof(*token) + sizeof(*token->kad) + tktlen;
-	prep->quotalen = datalen + plen;
+	prep->quotalen += datalen + plen;
 
 	plen -= sizeof(*token);
 	token = kzalloc(sizeof(*token), GFP_KERNEL);

@@ -303,6 +303,7 @@ static int rxrpc_preparse(struct key_preparsed_payload *prep)
 	memcpy(&kver, prep->data, sizeof(kver));
 	prep->data += sizeof(kver);
 	prep->datalen -= sizeof(kver);
+	prep->quotalen = 0;
 
 	_debug("KEY I/F VERSION: %u", kver);
 

@@ -340,7 +341,7 @@ static int rxrpc_preparse(struct key_preparsed_payload *prep)
 		goto error;
 
 	plen = sizeof(*token->kad) + v1->ticket_length;
-	prep->quotalen = plen + sizeof(*token);
+	prep->quotalen += plen + sizeof(*token);
 
 	ret = -ENOMEM;
 	token = kzalloc(sizeof(*token), GFP_KERNEL);
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