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ODEBUG: free active (active state 0) object: ffff888110bf9890 object type: timer_list hint: rose_t0timer_expiry+0x0/0x560
WARNING: lib/debugobjects.c:632 at debug_check_no_obj_freed+0x405/0x550, CPU#0: syz.0.2320/14372
Modules linked in:
CPU: 0 UID: 0 PID: 14372 Comm: syz.0.2320 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:debug_check_no_obj_freed+0x44a/0x550
Code: 89 44 24 20 e8 67 82 76 fd 48 8b 44 24 20 4c 8b 4d 00 4c 89 ef 48 c7 c6 40 d7 27 8c 48 c7 c2 c0 dc 27 8c 8b 0c 24 4d 89 f8 50 <67> 48 0f b9 3a 48 83 c4 08 4c 8b 6c 24 18 48 b9 00 00 00 00 00 fc
RSP: 0018:ffffc90000007b68 EFLAGS: 00010246
RAX: ffffffff8a973bd0 RBX: ffffffff9a4c5a00 RCX: 0000000000000000
RDX: ffffffff8c27dcc0 RSI: ffffffff8c27d740 RDI: ffffffff901c95b0
RBP: ffffffff8bcf3f60 R08: ffff888110bf9890 R09: ffffffff8bcf5280
R10: dffffc0000000000 R11: ffffffff81b1f7f0 R12: ffff888110bf9a00
R13: ffffffff901c95b0 R14: ffff888110bf9000 R15: ffff888110bf9890
FS:  000055556e50b500(0000) GS:ffff88818de57000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000002280 CR3: 0000000116108000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 kfree+0x13a/0x630
 rose_timer_expiry+0x4cb/0x600
 call_timer_fn+0x192/0x640
 __run_timer_base+0x652/0x8b0
 run_timer_softirq+0xb7/0x170
 handle_softirqs+0x22a/0x870
 do_softirq+0x76/0xd0
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0xf8/0x130
 netif_set_real_num_tx_queues+0x83f/0xb10
 __tun_detach+0xdc6/0x15d0
 tun_chr_close+0x10a/0x1c0
 __fput+0x44f/0xa70
 task_work_run+0x1d9/0x270
 exit_to_user_mode_loop+0xed/0x480
 do_syscall_64+0x32d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f48e3f9c819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdfe9fd8f8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007ffdfe9fd9e0 RCX: 00007f48e3f9c819
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 000000000003e669 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b2eb20000 R11: 0000000000000246 R12: 00007ffdfe9fda20
R13: 00007f48e4215fac R14: 000000000003e6bb R15: 00007f48e4215fa0
 </TASK>
