batman_adv: batadv0: Removing interface: veth9 batman_adv: batadv0: Removing interface: veth11 batman_adv: batadv0: Removing interface: veth13 ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x90 kernel/workqueue.c:4850 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 22590 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: 22590 Comm: syz-executor.4 Not tainted 4.14.163-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:ffff8880981ef538 EFLAGS: 00010086 RAX: 0000000000000061 RBX: 0000000000000003 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff814b8c65 RDI: ffffed101303de9d RBP: ffff8880981ef560 R08: 0000000000000061 R09: 0000000000000000 R10: 0000000000000000 R11: ffff88809b7c4480 R12: ffffffff86cbf660 R13: ffffffff813d9570 R14: 0000000000000000 R15: ffff8880649be380 __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 kvfree+0x4d/0x60 mm/util.c:416 netdev_freemem+0x4c/0x60 net/core/dev.c:8039 netdev_release+0x72/0x90 net/core/net-sysfs.c:1497 device_release+0x163/0x1a0 drivers/base/core.c:825 kobject_cleanup lib/kobject.c:646 [inline] kobject_release lib/kobject.c:675 [inline] kref_put include/linux/kref.h:70 [inline] kobject_put.cold+0x269/0x2f9 lib/kobject.c:692 netdev_run_todo+0x4e4/0x770 net/core/dev.c:7944 rtnl_unlock net/core/rtnetlink.c:106 [inline] rtnetlink_rcv_msg+0x3ea/0xb70 net/core/rtnetlink.c:4308 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: 0033:0x45af49 RSP: 002b:00007fe38a225c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045af49 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000007 RBP: 000000000075c118 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe38a2266d4 R13: 00000000004ca9ed R14: 00000000004e3e60 R15: 00000000ffffffff ======================================================