------------[ cut here ]------------ WARNING: CPU: 1 PID: 19294 at net/xfrm/xfrm_user.c:2210 xfrm_add_acquire+0x7a1/0x9c0 net/xfrm/xfrm_user.c:2210() BAD policy passed Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 19294 Comm: syz-executor.1 Not tainted 4.4.174+ #4 0000000000000000 ba9b1cf0d915c440 ffff8801d20573f0 ffffffff81aad1a1 ffff8801d2057540 ffffffff82835ee0 ffffffff82a9d500 00000000000008a2 ffffffff825836c1 ffff8801d20574d0 ffffffff813a48c2 0000000041b58ab3 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [] panic+0x1b9/0x37b kernel/panic.c:112 [] warn_slowpath_common kernel/panic.c:455 [inline] [] warn_slowpath_common.cold+0x20/0x20 kernel/panic.c:435 [] warn_slowpath_fmt+0xbf/0x100 kernel/panic.c:471 [] xfrm_add_acquire+0x7a1/0x9c0 net/xfrm/xfrm_user.c:2210 [] xfrm_user_rcv_msg+0x37c/0x630 net/xfrm/xfrm_user.c:2563 [] netlink_rcv_skb+0xd4/0x2e0 net/netlink/af_netlink.c:2361 [] xfrm_netlink_rcv+0x70/0x90 net/xfrm/xfrm_user.c:2571 [] netlink_unicast_kernel net/netlink/af_netlink.c:1277 [inline] [] netlink_unicast+0x4d7/0x700 net/netlink/af_netlink.c:1303 [] netlink_sendmsg+0x6b6/0xc80 net/netlink/af_netlink.c:1859 [] sock_sendmsg_nosec net/socket.c:638 [inline] [] sock_sendmsg+0xbe/0x110 net/socket.c:648 [] ___sys_sendmsg+0x769/0x890 net/socket.c:1975 [] __sys_sendmsg+0xc5/0x160 net/socket.c:2009 [] SYSC_sendmsg net/socket.c:2020 [inline] [] SyS_sendmsg+0x2d/0x50 net/socket.c:2016 [] entry_SYSCALL_64_fastpath+0x1e/0x9a Kernel Offset: disabled Rebooting in 86400 seconds..