netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'.
ODEBUG: free active (active state 0) object type: rcu_head hint:           (null)
------------[ cut here ]------------
WARNING: CPU: 1 PID: 10300 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: 10300 Comm: syz-executor.3 Not tainted 4.14.302-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x44 kernel/panic.c:547
 report_bug+0x208/0x250 lib/bug.c:183
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967
RIP: 0010:debug_print_object.cold+0xa7/0xdb lib/debugobjects.c:287
RSP: 0018:ffff8880ba507d00 EFLAGS: 00010082
RAX: 0000000000000051 RBX: 0000000000000003 RCX: 0000000000000000
RDX: 0000000000000100 RSI: 0000000000000002 RDI: ffffed10174a0f96
RBP: ffffffff878b2140 R08: 0000000000000051 R09: 0000000000000000
R10: 0000000000000000 R11: ffff888042a6c480 R12: 0000000000000000
R13: 0000000000000000 R14: ffff8880425d45c0 R15: ffff8880b4d50968
 __debug_check_no_obj_freed lib/debugobjects.c:747 [inline]
 debug_check_no_obj_freed+0x3b7/0x680 lib/debugobjects.c:776
 kfree+0xb9/0x250 mm/slab.c:3814
 __tcindex_destroy+0x2e/0x70 net/sched/cls_tcindex.c:253
 __rcu_reclaim kernel/rcu/rcu.h:195 [inline]
 rcu_do_batch kernel/rcu/tree.c:2699 [inline]
 invoke_rcu_callbacks kernel/rcu/tree.c:2962 [inline]
 __rcu_process_callbacks kernel/rcu/tree.c:2929 [inline]
 rcu_process_callbacks+0x780/0x1180 kernel/rcu/tree.c:2946
 __do_softirq+0x24d/0x9ff kernel/softirq.c:288
 invoke_softirq kernel/softirq.c:368 [inline]
 irq_exit+0x193/0x240 kernel/softirq.c:409
 exiting_irq arch/x86/include/asm/apic.h:638 [inline]
 smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1106
 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:796
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline]
RIP: 0010:console_unlock+0xbeb/0xf20 kernel/printk/printk.c:2417
RSP: 0018:ffff8880426bf440 EFLAGS: 00000216 ORIG_RAX: ffffffffffffff10
RAX: 0000000000040000 RBX: 0000000000000200 RCX: ffffc90007a19000
RDX: 0000000000015381 RSI: ffffffff81441324 RDI: 0000000000000216
RBP: 0000000000000000 R08: ffffffff8b9be200 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff83d275d0
R13: ffffffff8961e7d0 R14: dffffc0000000000 R15: 000000000000005f
 vprintk_emit+0x224/0x620 kernel/printk/printk.c:1925
 vprintk_func+0x58/0x160 kernel/printk/printk_safe.c:409
 printk+0x9e/0xbc kernel/printk/printk.c:1998
 nla_parse.cold+0x26/0x2b lib/nlattr.c:244
 nlmsg_parse include/net/netlink.h:398 [inline]
 rtnl_newlink+0x1c1/0x1830 net/core/rtnetlink.c:2540
 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4322
 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2454
 netlink_unicast_kernel net/netlink/af_netlink.c:1296 [inline]
 netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1322
 netlink_sendmsg+0x648/0xbc0 net/netlink/af_netlink.c:1893
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xb5/0x100 net/socket.c:656
 SYSC_sendto net/socket.c:1763 [inline]
 SyS_sendto+0x1c7/0x2c0 net/socket.c:1731
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7ff55cbdb0fc
RSP: 002b:00007ff55b19a000 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007ff55b19a0f0 RCX: 00007ff55cbdb0fc
RDX: 0000000000000024 RSI: 00007ff55b19a140 RDI: 0000000000000005
RBP: 0000000000000000 R08: 00007ff55b19a054 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 00007ff55b19a0a8
R13: 00007ff55b19a140 R14: 0000000000000005 R15: 0000000000000000

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