android/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

netrom: Fix a data-race around sysctl_netrom_routing_control

Browse Source 
[ Upstream commit b5dffcb8f71bdd02a4e5799985b51b12f4eeaf76 ]

We need to protect the reader reading the sysctl value because the
value can be changed concurrently.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Jason Xing <kernelxing@tencent.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jason Xing 2024-03-04 16:20:44 +08:00 committed by Sasha Levin
parent 01d4e3afe2
commit b7d33e083f
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
net/netrom/nr_route.c
View File

@ -777,7 +777,7 @@ int nr_route_frame(struct sk_buff *skb, ax25_cb *ax25)
return ret;
}
if (!sysctl_netrom_routing_control && ax25 != NULL)
if (!READ_ONCE(sysctl_netrom_routing_control) && ax25 != NULL)
return 0;
/* Its Time-To-Live has expired */