ODEBUG: free active (active state 1) object type: rcu_head hint:           (null)
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4786 at lib/debugobjects.c:287 debug_print_object.cold+0xa7/0xdb lib/debugobjects.c:287
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 4786 Comm: syz-executor.5 Not tainted 4.14.167-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x142/0x197 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x2f/0x2f kernel/panic.c:547
 report_bug+0x216/0x254 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x1bb/0x310 arch/x86/kernel/traps.c:295
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:963
RIP: 0010:debug_print_object.cold+0xa7/0xdb lib/debugobjects.c:287
RSP: 0018:ffff888056627110 EFLAGS: 00010086
RAX: 0000000000000051 RBX: 0000000000000003 RCX: 0000000000000000
RDX: 00000000000329e7 RSI: ffffffff814b6655 RDI: ffffed100acc4e18
RBP: ffff888056627138 R08: 0000000000000051 R09: 0000000000000000
R10: 0000000000000000 R11: ffff88805bde8600 R12: ffffffff86cb86e0
R13: 0000000000000000 R14: 0000000000000001 R15: ffff888092a26890
 __debug_check_no_obj_freed lib/debugobjects.c:747 [inline]
 debug_check_no_obj_freed+0x3f5/0x7b7 lib/debugobjects.c:776
 kfree+0xbd/0x270 mm/slab.c:3814
 free_tcf+0x13c/0x190 net/sched/act_api.c:73
 tcf_idr_remove net/sched/act_api.c:82 [inline]
 __tcf_idr_release net/sched/act_api.c:101 [inline]
 __tcf_idr_release+0x213/0x260 net/sched/act_api.c:85
 tcf_idr_release include/net/act_api.h:150 [inline]
 tcf_sample_init+0x7f2/0x960 net/sched/act_sample.c:80
 tcf_action_init_1+0x53c/0xaa0 net/sched/act_api.c:682
 tcf_action_init+0x2ab/0x480 net/sched/act_api.c:751
 tcf_action_add net/sched/act_api.c:1079 [inline]
 tc_ctl_action+0x30a/0x548 net/sched/act_api.c:1131
 rtnetlink_rcv_msg+0x3da/0xb70 net/core/rtnetlink.c:4306
 netlink_rcv_skb+0x14f/0x3c0 net/netlink/af_netlink.c:2432
 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:4318
 netlink_unicast_kernel net/netlink/af_netlink.c:1286 [inline]
 netlink_unicast+0x44d/0x650 net/netlink/af_netlink.c:1312
 netlink_sendmsg+0x7c4/0xc60 net/netlink/af_netlink.c:1877
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xce/0x110 net/socket.c:656
 ___sys_sendmsg+0x70a/0x840 net/socket.c:2062
 __sys_sendmsg+0xb9/0x140 net/socket.c:2096
 SYSC_sendmsg net/socket.c:2107 [inline]
 SyS_sendmsg+0x2d/0x50 net/socket.c:2103
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45b349
RSP: 002b:00007f0c8b56cc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f0c8b56d6d4 RCX: 000000000045b349
RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000003
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000099f R14: 00000000004cb163 R15: 000000000075bf2c

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