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ODEBUG: free active (active state 0) object: ffff888024448090 object type: timer_list hint: rose_t0timer_expiry+0x0/0x350
WARNING: CPU: 0 PID: 13005 at lib/debugobjects.c:615 debug_print_object+0x16b/0x1e0
Modules linked in:
CPU: 0 UID: 0 PID: 13005 Comm: syz.2.1773 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_print_object+0x16b/0x1e0
Code: 4c 89 ff e8 47 a5 52 fd 4d 8b 0f 48 c7 c7 20 43 e3 8b 48 8b 34 24 4c 89 ea 89 e9 4d 89 f0 41 54 e8 1a cf b2 fc 48 83 c4 08 90 <0f> 0b 90 90 ff 05 17 56 d3 0a 48 83 c4 08 5b 41 5c 41 5d 41 5e 41
RSP: 0018:ffffc90000007a10 EFLAGS: 00010292
RAX: f90224781d82f800 RBX: dffffc0000000000 RCX: ffff8881094c1cc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfa1f4 R12: ffffffff8a6d0680
R13: ffffffff8be344a0 R14: ffff888024448090 R15: ffffffff8b8ce020
FS:  00007fba4b2256c0(0000) GS:ffff8880b8615000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000170 CR3: 0000000112220000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 debug_check_no_obj_freed+0x3a2/0x470
 kfree+0x112/0x440
 rose_timer_expiry+0x4cb/0x600
 call_timer_fn+0x17e/0x5f0
 __run_timer_base+0x61a/0x860
 run_timer_softirq+0xb7/0x180
 handle_softirqs+0x286/0x870
 __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:preempt_count_add+0x61/0x1a0
Code: 05 b4 10 11 65 01 3d fe b3 10 11 48 c7 c0 20 03 ac 99 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 ec 00 00 00 83 3d cf 06 1c 18 00 <75> 11 65 8b 05 d6 b3 10 11 0f b6 c0 3d f5 00 00 00 73 5e 65 8b 05
RSP: 0018:ffffc900040df2f8 EFLAGS: 00000246
RAX: 0000000000000004 RBX: 0000000000000080 RCX: ffffffff99ac0303
RDX: 0000000000000000 RSI: 0000000000022a45 RDI: 0000000000000001
RBP: ffffc900040df650 R08: ffffea00008a9147 R09: 1ffffd4000115228
R10: dffffc0000000000 R11: fffff94000115229 R12: dffffc0000000000
R13: 1ffffd400011522b R14: 0000000000022a45 R15: dffffc0000000000
 pfn_valid+0xb3/0x490
 page_table_check_clear+0x21/0x700
 unmap_page_range+0x3445/0x4370
 unmap_vmas+0x399/0x580
 exit_mmap+0x248/0xb50
 __mmput+0x118/0x430
 exit_mm+0x1da/0x2c0
 do_exit+0x648/0x2300
 do_group_exit+0x21c/0x2d0
 get_signal+0x1286/0x1340
 arch_do_signal_or_restart+0x9a/0x750
 exit_to_user_mode_loop+0x75/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fba4a38eba9
Code: Unable to access opcode bytes at 0x7fba4a38eb7f.
RSP: 002b:00007fba4b225038 EFLAGS: 00000246 ORIG_RAX: 000000000000014d
RAX: fffffffffffffdfe RBX: 00007fba4a5d5fa0 RCX: 00007fba4a38eba9
RDX: 0000000000000002 RSI: 0000000000000002 RDI: 00007fba4b1eb000
RBP: 00007fba4a411e19 R08: 0000200000000700 R09: 0000000000000000
R10: 00002000000000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fba4a5d6038 R14: 00007fba4a5d5fa0 R15: 00007ffda2664058
 </TASK>
