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| author | katrinzhou <katrinzhou@tencent.com> | 2022-06-28 06:50:30 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-07-07 18:30:11 +0300 |
| commit | bb5584c25b7cef769690f64355a9941b822b4d30 (patch) | |
| tree | 234929d11123194712ae158b36ba8defafd5fe9d | |
| parent | c74f0e0243cbdf0244ba56c64c2d72edb49f3631 (diff) | |
| download | linux-bb5584c25b7cef769690f64355a9941b822b4d30.tar.xz | |
ipv6/sit: fix ipip6_tunnel_get_prl return value
commit adabdd8f6acabc0c3fdbba2e7f5a2edd9c5ef22d upstream.
When kcalloc fails, ipip6_tunnel_get_prl() should return -ENOMEM.
Move the position of label "out" to return correctly.
Addresses-Coverity: ("Unused value")
Fixes: 300aaeeaab5f ("[IPV6] SIT: Add SIOCGETPRL ioctl to get/dump PRL.")
Signed-off-by: katrinzhou <katrinzhou@tencent.com>
Reviewed-by: Eric Dumazet<edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20220628035030.1039171-1-zys.zljxml@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | net/ipv6/sit.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c index c87ce5da2cef..560aedccfa1a 100644 --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -308,8 +308,6 @@ static int ipip6_tunnel_get_prl(struct ip_tunnel *t, kcalloc(cmax, sizeof(*kp), GFP_KERNEL) : NULL; - rcu_read_lock(); - ca = min(t->prl_count, cmax); if (!kp) { @@ -325,7 +323,7 @@ static int ipip6_tunnel_get_prl(struct ip_tunnel *t, } } - c = 0; + rcu_read_lock(); for_each_prl_rcu(t->prl) { if (c >= cmax) break; @@ -337,7 +335,7 @@ static int ipip6_tunnel_get_prl(struct ip_tunnel *t, if (kprl.addr != htonl(INADDR_ANY)) break; } -out: + rcu_read_unlock(); len = sizeof(*kp) * c; @@ -346,7 +344,7 @@ out: ret = -EFAULT; kfree(kp); - +out: return ret; } |