This is a note to let you know that I've just added the patch titled
tls: get psock ref after taking rxlock to avoid leak
to the 6.8-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:
tls-get-psock-ref-after-taking-rxlock-to-avoid-leak.patch
and it can be found in the queue-6.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 1fce83d0b6de5a7217fdde308d1d48c666a26d9a
Author: Sabrina Dubroca <sd@xxxxxxxxxxxxxxx>
Date: Mon Mar 25 16:56:48 2024 +0100
tls: get psock ref after taking rxlock to avoid leak
[ Upstream commit 417e91e856099e9b8a42a2520e2255e6afe024be ]
At the start of tls_sw_recvmsg, we take a reference on the psock, and
then call tls_rx_reader_lock. If that fails, we return directly
without releasing the reference.
Instead of adding a new label, just take the reference after locking
has succeeded, since we don't need it before.
Fixes: 4cbc325ed6b4 ("tls: rx: allow only one reader at a time")
Signed-off-by: Sabrina Dubroca <sd@xxxxxxxxxxxxxxx>
Reviewed-by: Simon Horman <horms@xxxxxxxxxx>
Link: https://lore.kernel.org/r/fe2ade22d030051ce4c3638704ed58b67d0df643.1711120964.git.sd@xxxxxxxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c
index 14faf6189eb14..b783231668c65 100644
--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -1976,10 +1976,10 @@ int tls_sw_recvmsg(struct sock *sk,
if (unlikely(flags & MSG_ERRQUEUE))
return sock_recv_errqueue(sk, msg, len, SOL_IP, IP_RECVERR);
- psock = sk_psock_get(sk);
err = tls_rx_reader_lock(sk, ctx, flags & MSG_DONTWAIT);
if (err < 0)
return err;
+ psock = sk_psock_get(sk);
bpf_strp_enabled = sk_psock_strp_enabled(psock);
/* If crypto failed the connection is broken */
