------------[ cut here ]------------
ODEBUG: free active (active state 0) object: ffff888044797090 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.0.7056/927
Modules linked in:
CPU: 0 UID: 0 PID: 927 Comm: syz.0.7056 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 27 db 76 fd 48 8b 44 24 20 4c 8b 4d 00 4c 89 ef 48 c7 c6 40 c8 27 8c 48 c7 c2 c0 cd 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: ffffffff8a965ff0 RBX: ffffffff9a476500 RCX: 0000000000000000
RDX: ffffffff8c27cdc0 RSI: ffffffff8c27c840 RDI: ffffffff901c67f0
RBP: ffffffff8bcf3dc0 R08: ffff888044797090 R09: ffffffff8bcf50e0
R10: dffffc0000000000 R11: ffffffff81b1e960 R12: ffff888044797200
R13: ffffffff901c67f0 R14: ffff888044797000 R15: ffff888044797090
FS:  0000555579296500(0000) GS:ffff88818de5d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001a5c46000 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
 __irq_exit_rcu+0x5f/0x150
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50
Code: 90 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 2a aa f0 f5 48 89 df e8 62 1f f1 f5 e8 6d 77 1c f6 fb bf 01 00 00 00 <e8> 42 dc e2 f5 65 8b 05 9b 1f 6b 07 85 c0 74 07 5b e9 01 48 00 00
RSP: 0018:ffffc9002a867e78 EFLAGS: 00000206
RAX: 000000000000252b RBX: ffff88817691f200 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff8def76c1 RDI: 0000000000000001
RBP: dffffc0000000000 R08: ffffffff9011a3b7 R09: 1ffffffff2023476
R10: dffffc0000000000 R11: fffffbfff2023477 R12: 1ffff11033f32d35
R13: ffff8881733357c0 R14: ffff88819f996998 R15: ffff88819f9969ac
 do_group_exit+0x20b/0x2d0
 __x64_sys_exit_group+0x3f/0x40
 x64_sys_call+0x221a/0x2240
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f39de99c799
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:00007fff2d615a68 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f39de99c799
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fff2d615acc R08: 0000000000000000 R09: 00000000000927c0
R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000000949
R13: 00000000000927c0 R14: 000000000009fc0d R15: 00007fff2d615b20
 </TASK>
