@@ -645,14 +645,15 @@ static void rt6_probe(struct fib6_nh *fib6_nh)
write_lock_bh(&neigh->lock);
if (!(neigh->nud_state & NUD_VALID) &&
time_after(jiffies,
- neigh->updated + idev->cnf.rtr_probe_interval)) {
+ neigh->updated +
+ READ_ONCE(idev->cnf.rtr_probe_interval))) {
work = kmalloc(sizeof(*work), GFP_ATOMIC);
if (work)
__neigh_set_probe_once(neigh);
}
write_unlock_bh(&neigh->lock);
} else if (time_after(jiffies, last_probe +
- idev->cnf.rtr_probe_interval)) {
+ READ_ONCE(idev->cnf.rtr_probe_interval))) {
work = kmalloc(sizeof(*work), GFP_ATOMIC);
}
Use READ_ONCE() while reading idev->cnf.rtr_probe_interval while its value could be changed. Signed-off-by: Eric Dumazet <edumazet@google.com> --- net/ipv6/route.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)