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ODEBUG: assert_init not available (active state 0) object type: timer_list hint:           (null)
WARNING: CPU: 0 PID: 28510 at lib/debugobjects.c:325 debug_print_object+0x160/0x250 lib/debugobjects.c:325
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 28510 Comm: syz-executor.1 Not tainted 4.19.121-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x188/0x20d lib/dump_stack.c:118
 panic+0x26a/0x50e kernel/panic.c:186
 __warn.cold+0x20/0x46 kernel/panic.c:541
 report_bug+0x262/0x2a0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1037
RIP: 0010:debug_print_object+0x160/0x250 lib/debugobjects.c:325
Code: dd c0 11 cb 87 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd c0 11 cb 87 48 c7 c7 00 07 cb 87 e8 3b 1f e5 fd <0f> 0b 83 05 63 c0 55 06 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89
RSP: 0018:ffff8881eee76d58 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8152fab1 RDI: ffffed103ddced9d
RBP: 0000000000000001 R08: ffff88803061c400 R09: ffffed1015cc3ee3
R10: ffffed1015cc3ee2 R11: ffff8880ae61f717 R12: ffffffff88d9fae0
R13: ffffffff81584560 R14: 1ffff1103ddcedb8 R15: ffff888182d9d740
 debug_object_assert_init lib/debugobjects.c:694 [inline]
 debug_object_assert_init+0x23a/0x2f0 lib/debugobjects.c:665
 debug_timer_assert_init kernel/time/timer.c:724 [inline]
 debug_assert_init kernel/time/timer.c:776 [inline]
 del_timer+0x6d/0x100 kernel/time/timer.c:1198
 try_to_grab_pending+0x2d5/0x6f0 kernel/workqueue.c:1223
 __cancel_work_timer+0xa6/0x4f0 kernel/workqueue.c:2974
 batadv_nc_mesh_free+0x41/0x116 net/batman-adv/network-coding.c:1891
 batadv_mesh_free+0x7d/0x170 net/batman-adv/main.c:242
 batadv_mesh_init+0x5b7/0x690 net/batman-adv/main.c:223
 batadv_softif_init_late+0xad9/0xd90 net/batman-adv/soft-interface.c:863
 register_netdevice+0x2d2/0xf50 net/core/dev.c:8640
 rtnl_newlink+0x126f/0x1440 net/core/rtnetlink.c:3154
 rtnetlink_rcv_msg+0x453/0xaf0 net/core/rtnetlink.c:4777
 netlink_rcv_skb+0x160/0x410 net/netlink/af_netlink.c:2455
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x4d7/0x6a0 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x80b/0xcd0 net/netlink/af_netlink.c:1909
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:632
 __sys_sendto+0x21a/0x330 net/socket.c:1787
 __do_sys_sendto net/socket.c:1799 [inline]
 __se_sys_sendto net/socket.c:1795 [inline]
 __x64_sys_sendto+0xdd/0x1b0 net/socket.c:1795
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x416583
Code: ff 0f 83 b0 19 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 0d 1f 89 00 00 75 17 49 89 ca b8 2c 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 81 19 00 00 c3 48 83 ec 08 e8 87 fa ff ff
RSP: 002b:00007fffb5628e98 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000ca2200 RCX: 0000000000416583
RDX: 000000000000003c RSI: 0000000000ca2250 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007fffb5628ea0 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000ca2250 R15: 0000000000000003
Kernel Offset: disabled
Rebooting in 86400 seconds..