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author | Thomas Gleixner <tglx@linutronix.de> | 2019-07-03 11:50:21 +0300 |
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committer | Thomas Gleixner <tglx@linutronix.de> | 2019-07-03 11:50:21 +0300 |
commit | 341924049558e5f7c1a148a2c461a417933d35d9 (patch) | |
tree | 1340b4f2131737ef4be63f18ee74cd73ad12cd3e /net/ipv6/ip6_flowlabel.c | |
parent | 516337048fa40496ae5ca9863c367ec991a44d9a (diff) | |
parent | 4a8f81b8c053aad250ee247b219904ada72df9a4 (diff) | |
download | linux-341924049558e5f7c1a148a2c461a417933d35d9.tar.xz |
Merge branch 'timers/vdso' into timers/core
so the hyper-v clocksource update can be applied.
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 2f3eb7dc45da..545e339b8c4f 100644 --- a/net/ipv6/ip6_flowlabel.c +++ b/net/ipv6/ip6_flowlabel.c @@ -250,9 +250,9 @@ 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; } @@ -618,7 +618,8 @@ 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; } } |