lkml.org 
[lkml]   [2024]   [Mar]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 5.15 17/76] netrom: Fix a data-race around sysctl_netrom_obsolescence_count_initialiser
Date
From: Jason Xing <kernelxing@tencent.com>

[ Upstream commit cfd9f4a740f772298308b2e6070d2c744fb5cf79 ]

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@tencent.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/netrom/nr_route.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/netrom/nr_route.c b/net/netrom/nr_route.c
index 55cd51977fbc2..e5d24462d5100 100644
--- a/net/netrom/nr_route.c
+++ b/net/netrom/nr_route.c
@@ -766,7 +766,7 @@ int nr_route_frame(struct sk_buff *skb, ax25_cb *ax25)
if (ax25 != NULL) {
ret = nr_add_node(nr_src, "", &ax25->dest_addr, ax25->digipeat,
ax25->ax25_dev->dev, 0,
- sysctl_netrom_obsolescence_count_initialiser);
+ READ_ONCE(sysctl_netrom_obsolescence_count_initialiser));
if (ret)
return ret;
}
--
2.43.0

\
 
 \ /
  Last update: 2024-03-13 18:25    [W:0.424 / U:3.776 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site