This is a note to let you know that I've just added the patch titled
netrom: Fix a data-race around sysctl_netrom_transport_timeout
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:
netrom-fix-a-data-race-around-sysctl_netrom_transpor.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.
commit 6ed6d5f3bdfe4fac7253d54e289528c2e77618a6
Author: Jason Xing <kernelxing@xxxxxxxxxxx>
Date: Mon Mar 4 16:20:38 2024 +0800
netrom: Fix a data-race around sysctl_netrom_transport_timeout
[ Upstream commit 60a7a152abd494ed4f69098cf0f322e6bb140612 ]
We need to protect the reader reading the sysctl value because the
value can be changed concurrently.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Jason Xing <kernelxing@xxxxxxxxxxx>
Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
index 24747163122bb..6857510967448 100644
--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -453,7 +453,7 @@ static int nr_create(struct net *net, struct socket *sock, int protocol,
nr_init_timers(sk);
nr->t1 =
- msecs_to_jiffies(sysctl_netrom_transport_timeout);
+ msecs_to_jiffies(READ_ONCE(sysctl_netrom_transport_timeout));
nr->t2 =
msecs_to_jiffies(sysctl_netrom_transport_acknowledge_delay);
nr->n2 =
