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Code

netrom: Fix a data-race around sysctl_netrom_routing_control

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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>
This commit is contained in:
Jason Xing 2024-03-04 16:20:44 +08:00 committed by Paolo Abeni
parent f99b494b40
commit b5dffcb8f7
1 changed files with 1 additions and 1 deletions
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2
net/netrom/nr_route.c
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@ -780,7 +780,7 @@ int nr_route_frame(struct sk_buff *skb, ax25_cb *ax25)
return ret; return ret;
} }
if (!sysctl_netrom_routing_control && ax25 != NULL) if (!READ_ONCE(sysctl_netrom_routing_control) && ax25 != NULL)
return 0; return 0;
/* Its Time-To-Live has expired */ /* Its Time-To-Live has expired */