libudev: monitor - do not filter messages with wrong magic

diff --git a/udev/lib/libudev-monitor.c b/udev/lib/libudev-monitor.c
index d8b375c713d41bea120c9e9af5e63128d71630c4..211aa12f62b1b770aa09edff05acfdda525ff202 100644 (file)
--- a/udev/lib/libudev-monitor.c
+++ b/udev/lib/libudev-monitor.c
@@ -241,8 +241,8 @@ static int filter_apply(struct udev_monitor *udev_monitor)
        bpf_stmt(ins, &i, BPF_LD|BPF_W|BPF_ABS, offsetof(struct udev_monitor_netlink_header, magic));
        /* jump if magic matches */
        bpf_jmp(ins, &i, BPF_JMP|BPF_JEQ|BPF_K, UDEV_MONITOR_MAGIC, 1, 0);
-       /* wrong magic, drop packet */
-       bpf_stmt(ins, &i, BPF_RET|BPF_K, 0);
+       /* wrong magic, pass packet */
+       bpf_stmt(ins, &i, BPF_RET|BPF_K, 0xffffffff);
 
        /* add all subsystem match values */
        udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_monitor->filter_subsystem_list)) {