diff options
| author | Eric Dumazet <edumazet@google.com> | 2025-06-30 12:19:27 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-07-02 14:32:29 -0700 |
| commit | 8f2b2282d04a5d5bcbec22f91572bb6803cfc771 (patch) | |
| tree | b78b4203652884e4eea1c2002f4a13a2db2ce1a2 /net/core | |
| parent | net: dst: annotate data-races around dst->expires (diff) | |
| download | linux-8f2b2282d04a5d5bcbec22f91572bb6803cfc771.tar.gz linux-8f2b2282d04a5d5bcbec22f91572bb6803cfc771.zip | |
net: dst: annotate data-races around dst->lastuse
(dst_entry)->lastuse 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/20250630121934.3399505-4-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/rtnetlink.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index c57692eb8da9..a9555bfc372f 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -1026,9 +1026,11 @@ int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id, .rta_error = error, .rta_id = id, }; + unsigned long delta; if (dst) { - ci.rta_lastuse = jiffies_delta_to_clock_t(jiffies - dst->lastuse); + delta = jiffies - READ_ONCE(dst->lastuse); + ci.rta_lastuse = jiffies_delta_to_clock_t(delta); ci.rta_used = dst->__use; ci.rta_clntref = rcuref_read(&dst->__rcuref); } |