netlink: 1 bytes leftover after parsing attributes in process `syz-executor7'. ------------[ cut here ]------------ WARNING: CPU: 1 PID: 9037 at net/core/sock_reuseport.c:41 reuseport_alloc+0x223/0x290 net/core/sock_reuseport.c:39 multiple allocations for the same socket[ 93.122944] Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 9037 Comm: syz-executor0 Not tainted 4.9.60-g6d14481 #79 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801c8e97a88 ffffffff81d91449 ffffffff83a46ba0 ffff8801c8e97b60 ffffffff83ee8a00 ffffffff82f94533 0000000000000009 ffff8801c8e97b50 ffffffff8142e451 0000000041b58ab3 ffffffff84185be8 ffffffff8142e295 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready qtaguid: iface_stat: create6(lo): no inet dev netlink: 1 bytes leftover after parsing attributes in process `syz-executor7'. selinux_nlmsg_perm: 5 callbacks suppressed SELinux: unrecognized netlink message: protocol=0 nlmsg_type=56166 sclass=netlink_route_socket pig=9060 comm=syz-executor4 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=56166 sclass=netlink_route_socket pig=9061 comm=syz-executor4 netlink: 1 bytes leftover after parsing attributes in process `syz-executor6'. [] panic+0x1bc/0x3a8 kernel/panic.c:179 [] __warn+0x1c4/0x1e0 kernel/panic.c:542 [] warn_slowpath_fmt+0xc4/0x110 kernel/panic.c:565 [] reuseport_alloc+0x223/0x290 net/core/sock_reuseport.c:39 [] __reuseport_attach_prog net/core/filter.c:1212 [inline] [] sk_reuseport_attach_filter+0x1c1/0x2a0 net/core/filter.c:1300 [] sock_setsockopt+0x5f7/0x18e0 net/core/sock.c:912 [] SYSC_setsockopt net/socket.c:1767 [inline] [] SyS_setsockopt+0x216/0x250 net/socket.c:1750 [] entry_SYSCALL_64_fastpath+0x23/0xc6 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..