From: Jason Xing Date: Mon, 4 Mar 2024 08:20:41 +0000 (+0800) Subject: netrom: Fix a data-race around sysctl_netrom_transport_busy_delay X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=5ac337138272d26d6d3d4f71bc5b1a87adf8b24d;p=people%2Faperard%2Flinux.git netrom: Fix a data-race around sysctl_netrom_transport_busy_delay [ Upstream commit 43547d8699439a67b78d6bb39015113f7aa360fd ] 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 Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin --- diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c index 7428ea436e318..ee6621c0d2e45 100644 --- a/net/netrom/af_netrom.c +++ b/net/netrom/af_netrom.c @@ -459,7 +459,7 @@ static int nr_create(struct net *net, struct socket *sock, int protocol, nr->n2 = msecs_to_jiffies(READ_ONCE(sysctl_netrom_transport_maximum_tries)); nr->t4 = - msecs_to_jiffies(sysctl_netrom_transport_busy_delay); + msecs_to_jiffies(READ_ONCE(sysctl_netrom_transport_busy_delay)); nr->idle = msecs_to_jiffies(sysctl_netrom_transport_no_activity_timeout); nr->window = sysctl_netrom_transport_requested_window_size;