diff options
| author | Eric Dumazet <edumazet@google.com> | 2025-06-30 12:19:26 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-07-02 14:32:29 -0700 |
| commit | 36229b2caca2228b834c03fb83867022485a0563 (patch) | |
| tree | 3fa283264347b44f58eacb15f19dbc836e0d5f1b /net/ipv4/route.c | |
| parent | 8a402bbe54760dea67f1b2980c727761b47994d7 (diff) | |
net: dst: annotate data-races around dst->expires
(dst_entry)->expires is read and written locklessly,
add corresponding annotations.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20250630121934.3399505-3-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/ipv4/route.c')
| -rw-r--r-- | net/ipv4/route.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c index d32af8c16727..d7a534a5f1ff 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -844,7 +844,7 @@ static void ipv4_negative_advice(struct sock *sk, if ((READ_ONCE(dst->obsolete) > 0) || (rt->rt_flags & RTCF_REDIRECTED) || - rt->dst.expires) + READ_ONCE(rt->dst.expires)) sk_dst_reset(sk); } @@ -1033,7 +1033,8 @@ static void __ip_rt_update_pmtu(struct rtable *rt, struct flowi4 *fl4, u32 mtu) } if (rt->rt_pmtu == mtu && !lock && - time_before(jiffies, dst->expires - net->ipv4.ip_rt_mtu_expires / 2)) + time_before(jiffies, READ_ONCE(dst->expires) - + net->ipv4.ip_rt_mtu_expires / 2)) goto out; if (fib_lookup(net, fl4, &res, 0) == 0) { @@ -3010,7 +3011,7 @@ static int rt_fill_info(struct net *net, __be32 dst, __be32 src, } } - expires = rt->dst.expires; + expires = READ_ONCE(rt->dst.expires); if (expires) { unsigned long now = jiffies; |