diff options
author | Stefan Agner <stefan.agner@toradex.com> | 2019-08-16 16:40:08 +0200 |
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committer | Stefan Agner <stefan.agner@toradex.com> | 2019-08-16 16:40:08 +0200 |
commit | 3758b8bd81966b63dc93093a323e9bdd734545fd (patch) | |
tree | 229bda2abe1a31d59da4b48e71aeefde934fe1d0 /net/ipv6/ip6_flowlabel.c | |
parent | d15d0b7a9f89cf5a905ad6802eb23100c8063939 (diff) | |
parent | dd209b062b86dd951cf1da93f20aa497fe99d52d (diff) |
Merge tag 'v4.19.59-rt24' into toradex_4.19.y-rttoradex_4.19.y-rt
Linux 4.19.59-rt24
Diffstat (limited to 'net/ipv6/ip6_flowlabel.c')
-rw-r--r-- | net/ipv6/ip6_flowlabel.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c index be5f3d7ceb96..f994f50e1516 100644 --- a/net/ipv6/ip6_flowlabel.c +++ b/net/ipv6/ip6_flowlabel.c @@ -254,9 +254,9 @@ struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk, __be32 label) rcu_read_lock_bh(); for_each_sk_fl_rcu(np, sfl) { struct ip6_flowlabel *fl = sfl->fl; - if (fl->label == label) { + + if (fl->label == label && atomic_inc_not_zero(&fl->users)) { fl->lastuse = jiffies; - atomic_inc(&fl->users); rcu_read_unlock_bh(); return fl; } @@ -622,7 +622,8 @@ int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen) goto done; } fl1 = sfl->fl; - atomic_inc(&fl1->users); + if (!atomic_inc_not_zero(&fl1->users)) + fl1 = NULL; break; } } |