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ODEBUG: free active (active state 0) object: ffff88816d03ac90 object type: timer_list hint: rose_t0timer_expiry+0x0/0x350
WARNING: lib/debugobjects.c:615 at 0x0, CPU#0: swapper/0/0
Modules linked in:
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 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 c7 de 92 fd 48 8b 44 24 20 4c 8b 4d 00 4c 89 ef 48 c7 c6 a0 cc bf 8b 48 c7 c2 c0 d1 bf 8b 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:ffffc90000007a70 EFLAGS: 00010246
RAX: ffffffff8a3bd800 RBX: ffffffff99a5e2b0 RCX: 0000000000000000
RDX: ffffffff8bbfd1c0 RSI: ffffffff8bbfcca0 RDI: ffffffff8f8aa470
RBP: ffffffff8b6d24a0 R08: ffff88816d03ac90 R09: ffffffff8b6d3600
R10: dffffc0000000000 R11: ffffffff81ae6210 R12: ffff88816d03ae00
R13: ffffffff8f8aa470 R14: ffff88816d03a000 R15: ffff88816d03ac90
FS:  0000000000000000(0000) GS:ffff88818eab1000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000d000 CR3: 000000000dd3a000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 kfree+0x13b/0x660
 rose_timer_expiry+0x4cb/0x600
 call_timer_fn+0x16e/0x590
 __run_timer_base+0x61a/0x860
 run_timer_softirq+0xb7/0x180
 handle_softirqs+0x27d/0x850
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:pv_native_safe_halt+0x13/0x20
Code: 53 ec 02 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d 53 0d 1f 00 f3 0f 1e fa fb f4 <c3> cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffffff8dc07d80 EFLAGS: 00000286
RAX: d8656d4ef6af2600 RBX: ffffffff8197438a RCX: d8656d4ef6af2600
RDX: 0000000000000001 RSI: ffffffff8d76bd39 RDI: ffffffff8bbfc660
RBP: ffffffff8dc07ea8 R08: ffff88812123359b R09: 1ffff110242466b3
R10: dffffc0000000000 R11: ffffed10242466b4 R12: ffffffff8f805a70
R13: 1ffffffff1b92a50 R14: 0000000000000000 R15: 0000000000000000
 default_idle+0x13/0x20
 default_idle_call+0x73/0xb0
 do_idle+0x1ea/0x520
 cpu_startup_entry+0x44/0x60
 rest_init+0x2de/0x300
 start_kernel+0x3ae/0x410
 x86_64_start_reservations+0x24/0x30
 x86_64_start_kernel+0x143/0x1c0
 common_startup_64+0x13e/0x147
 </TASK>
