------------[ cut here ]------------
ODEBUG: free active (active state 0) object type: hrtimer hint: isotp_rx_timer_handler+0x0/0x170 include/linux/list.h:71
WARNING: CPU: 0 PID: 55 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505
Modules linked in:
CPU: 0 PID: 55 Comm: kworker/u4:2 Not tainted 5.13.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:505
Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 af 00 00 00 48 8b 14 dd 20 03 c3 89 4c 89 ee 48 c7 c7 20 f7 c2 89 e8 8d de 03 05 <0f> 0b 83 05 85 17 f6 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3
RSP: 0018:ffffc90000007c78 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: ffff888015db3880 RSI: ffffffff815ce2a5 RDI: fffff52000000f81
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815c810e R11: 0000000000000000 R12: ffffffff896da7c0
R13: ffffffff89c2fd60 R14: ffffffff816487b0 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c000ccd000 CR3: 0000000065ff3000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __debug_check_no_obj_freed lib/debugobjects.c:987 [inline]
 debug_check_no_obj_freed+0x301/0x420 lib/debugobjects.c:1018
 free_pages_prepare mm/page_alloc.c:1303 [inline]
 __free_pages_ok+0x254/0xce0 mm/page_alloc.c:1572
 sk_prot_free net/core/sock.c:1760 [inline]
 __sk_destruct+0x6c6/0x900 net/core/sock.c:1845
 sk_destruct+0xbd/0xe0 net/core/sock.c:1860
 __sk_free+0xef/0x3d0 net/core/sock.c:1871
 sk_free+0x78/0xa0 net/core/sock.c:1882
 sock_put include/net/sock.h:1813 [inline]
 can_rx_delete_receiver+0xbd/0xf0 net/can/af_can.c:497
 rcu_do_batch kernel/rcu/tree.c:2558 [inline]
 rcu_core+0x7ab/0x13b0 kernel/rcu/tree.c:2793
 __do_softirq+0x29b/0x9f6 kernel/softirq.c:559
 do_softirq.part.0+0xd9/0x130 kernel/softirq.c:460
 </IRQ>
 do_softirq kernel/softirq.c:452 [inline]
 __local_bh_enable_ip+0x102/0x120 kernel/softirq.c:384
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 get_next_corpse net/netfilter/nf_conntrack_core.c:2233 [inline]
 nf_ct_iterate_cleanup+0x15a/0x450 net/netfilter/nf_conntrack_core.c:2256
 nf_conntrack_cleanup_net_list+0x184/0x4f0 net/netfilter/nf_conntrack_core.c:2450
 ops_exit_list+0x10d/0x160 net/core/net_namespace.c:178
 cleanup_net+0x4ea/0xb10 net/core/net_namespace.c:595
 process_one_work+0x98d/0x1600 kernel/workqueue.c:2276
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2422
 kthread+0x3b1/0x4a0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294