tun: add mutex_unlock() call and napi.skb clearing in tun_get_user()

[mirror_ubuntu-bionic-kernel.git] / drivers / net / tun.c

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 6d1c7e77dfec24c74b1949d21683d5c6aab0690a..83d267ded3465b9ce10e0eb2ba1ed9befd0670bd 100644 (file)
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1762,6 +1762,10 @@ drop:
                        if (ret != XDP_PASS) {
                                rcu_read_unlock();
                                local_bh_enable();
+                               if (frags) {
+                                       tfile->napi.skb = NULL;
+                                       mutex_unlock(&tfile->napi_mutex);
+                               }
                                return total_len;
                        }
                }