iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

netrom: Fix a data-race around sysctl_netrom_link_fails_count

Browse Source 
[ Upstream commit bc76645ebdd01be9b9994dac39685a3d0f6f7985 ]

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>
This commit is contained in:
Jason Xing 2024-03-04 16:20:45 +08:00 committed by Sasha Levin
parent d732b83251
commit db364859ce
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

@ -728,7 +728,7 @@ void nr_link_failed(ax25_cb *ax25, int reason)
nr_neigh->ax25 = NULL;
ax25_cb_put(ax25);
if (++nr_neigh->failed < sysctl_netrom_link_fails_count) {
if (++nr_neigh->failed < READ_ONCE(sysctl_netrom_link_fails_count)) {
nr_neigh_put(nr_neigh);
return;
}