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Diffstat (limited to 'net/xfrm/xfrm_policy.c')
-rw-r--r--net/xfrm/xfrm_policy.c14
1 files changed, 10 insertions, 4 deletions
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index e9eb82c5457d..5c61ec04b839 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -336,7 +336,7 @@ static void xfrm_policy_timer(struct timer_list *t)
}
if (xp->lft.hard_use_expires_seconds) {
time64_t tmo = xp->lft.hard_use_expires_seconds +
- (xp->curlft.use_time ? : xp->curlft.add_time) - now;
+ (READ_ONCE(xp->curlft.use_time) ? : xp->curlft.add_time) - now;
if (tmo <= 0)
goto expired;
if (tmo < next)
@@ -354,7 +354,7 @@ static void xfrm_policy_timer(struct timer_list *t)
}
if (xp->lft.soft_use_expires_seconds) {
time64_t tmo = xp->lft.soft_use_expires_seconds +
- (xp->curlft.use_time ? : xp->curlft.add_time) - now;
+ (READ_ONCE(xp->curlft.use_time) ? : xp->curlft.add_time) - now;
if (tmo <= 0) {
warn = 1;
tmo = XFRM_KM_TIMEOUT;
@@ -3661,7 +3661,8 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
return 1;
}
- pol->curlft.use_time = ktime_get_real_seconds();
+ /* This lockless write can happen from different cpus. */
+ WRITE_ONCE(pol->curlft.use_time, ktime_get_real_seconds());
pols[0] = pol;
npols++;
@@ -3676,7 +3677,9 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
xfrm_pol_put(pols[0]);
return 0;
}
- pols[1]->curlft.use_time = ktime_get_real_seconds();
+ /* This write can happen from different cpus. */
+ WRITE_ONCE(pols[1]->curlft.use_time,
+ ktime_get_real_seconds());
npols++;
}
}
@@ -3742,6 +3745,9 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
goto reject;
}
+ if (if_id)
+ secpath_reset(skb);
+
xfrm_pols_put(pols, npols);
return 1;
}