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ODEBUG: free active (active state 0) object: ffff88801cada490 object type: timer_list hint: rose_t0timer_expiry+0x0/0x560
WARNING: lib/debugobjects.c:615 at debug_check_no_obj_freed+0x405/0x550, CPU#0: syz.1.4734/23199
Modules linked in:
CPU: 0 UID: 0 PID: 23199 Comm: syz.1.4734 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 37 6f 77 fd 48 8b 44 24 20 4c 8b 4d 00 4c 89 ef 48 c7 c6 40 b0 27 8c 48 c7 c2 c0 b5 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: 0000:ffffc9000cf87a88 EFLAGS: 00010246
RAX: ffffffff8a956630 RBX: ffffffff9a524cc0 RCX: 0000000000000000
RDX: ffffffff8c27b5c0 RSI: ffffffff8c27b040 RDI: ffffffff901c4580
RBP: ffffffff8bcf3c40 R08: ffff88801cada490 R09: ffffffff8bcf4f60
R10: dffffc0000000000 R11: ffffffff81b1d860 R12: ffff88801cada600
R13: ffffffff901c4580 R14: ffff88801cada000 R15: ffff88801cada490
FS:  000055555ea83500(0000) GS:ffff88818de64000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3041eff8 CR3: 000000019beda000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 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
 __irq_exit_rcu+0x5f/0x150
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0x57/0xc0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0033:0x7f2ea8470de0
Code: fe c6 44 24 0e 01 45 31 ed 45 31 f6 89 7c 24 08 85 c0 0f 84 10 01 00 00 66 90 48 8b 3c 24 49 8b 54 24 40 4c 89 f0 4a 03 14 ef <80> 3d c1 6f 3a 00 00 49 89 d6 48 89 d3 74 28 25 ff 0f 00 00 83 f0
RSP: 002b:00007ffff9e2bb40 EFLAGS: 00000286
RAX: ffffffff8ba95600 RBX: ffffffff8ba95600 RCX: ffffffff8ba95600
RDX: ffffffff8ba95714 RSI: ffffffff8ba95600 RDI: 00007f2ea7fff008
RBP: 0000000000000611 R08: 00007f2ea8800000 R09: 00007f2ea8802000
R10: 000000008ba95604 R11: 0000000000000002 R12: 00007f2ea8816038
R13: 0000000000037fff R14: ffffffff8ba95600 R15: 00007f2ea9345720
 </TASK>
