netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.0'. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 2718 at net/xfrm/xfrm_policy.c:797 xfrm_policy_insert+0x701/0x1140 net/xfrm/xfrm_policy.c:797 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 2718 Comm: syz-executor.0 Not tainted 4.9.141+ #1 ffff8801d2807398 ffffffff81b42e79 ffffffff82a38ce0 00000000ffffffff ffffffff82cb8900 0000000000000000 0000000000000009 ffff8801d2807458 ffffffff813f7125 0000000041b58ab3 ffffffff82e2b62b ffffffff813f6f66 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] panic+0x1bf/0x39f kernel/panic.c:179 [] __warn.cold.8+0x2f/0x2f kernel/panic.c:542 [] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585 [] xfrm_policy_insert+0x701/0x1140 net/xfrm/xfrm_policy.c:797 [] xfrm_add_policy+0x248/0x4f0 net/xfrm/xfrm_user.c:1624 [] xfrm_user_rcv_msg+0x3c4/0x640 net/xfrm/xfrm_user.c:2608 [] netlink_rcv_skb+0x145/0x370 net/netlink/af_netlink.c:2365 [] xfrm_netlink_rcv+0x6f/0x90 net/xfrm/xfrm_user.c:2616 [] netlink_unicast_kernel net/netlink/af_netlink.c:1285 [inline] [] netlink_unicast+0x4d8/0x6d0 net/netlink/af_netlink.c:1311 [] netlink_sendmsg+0x694/0xc30 net/netlink/af_netlink.c:1859 [] sock_sendmsg_nosec net/socket.c:648 [inline] [] sock_sendmsg+0xbb/0x110 net/socket.c:658 [] ___sys_sendmsg+0x6fc/0x840 net/socket.c:1982 [] __sys_sendmsg+0xd9/0x190 net/socket.c:2016 [] SYSC_sendmsg net/socket.c:2027 [inline] [] SyS_sendmsg+0x2d/0x50 net/socket.c:2023 [] do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285 [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Kernel Offset: disabled Rebooting in 86400 seconds..