------------[ cut here ]------------
ODEBUG: free active (active state 0) object: ffff888053d6f890 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.1.35685/14570
Modules linked in:
CPU: 0 UID: 0 PID: 14570 Comm: syz.1.35685 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 a7 a7 76 fd 48 8b 44 24 20 4c 8b 4d 00 4c 89 ef 48 c7 c6 c0 d0 27 8c 48 c7 c2 40 d6 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: ffffffff8a9803b0 RBX: ffffffff9a4f63e8 RCX: 0000000000000000
RDX: ffffffff8c27d640 RSI: ffffffff8c27d0c0 RDI: ffffffff901c51d0
RBP: ffffffff8bcf3fa0 R08: ffff888053d6f890 R09: ffffffff8bcf52c0
R10: dffffc0000000000 R11: ffffffff81b1f6d0 R12: ffff888053d6fa00
R13: ffffffff901c51d0 R14: ffff888053d6f000 R15: ffff888053d6f890
FS:  00007f06411006c0(0000) GS:ffff88818de54000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c27c1e8 CR3: 000000000e54c000 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:lock_acquire+0x20b/0x2e0
Code: e9 30 ff ff ff e8 45 e5 0f 0a f7 c3 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 c1 32 7b 11 48 3b 44 24 30 75 33 fb 48 83 c4 38 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d be 51 73
RSP: 0018:ffffc9002c517310 EFLAGS: 00000292
RAX: 7ddcbe997dc5d600 RBX: 0000000000000246 RCX: 0000000080000001
RDX: 000000005499a9ec RSI: ffffffff8e19bdeb RDI: ffffffff8c27ca80
RBP: 0000000000000000 R08: ffffffff823c3384 R09: ffffffff8e75e620
R10: dffffc0000000000 R11: fffff94000d796a9 R12: 0000000000000002
R13: ffffffff8e75e620 R14: 0000000000000000 R15: 0000000000000000
 page_table_check_clear+0x164/0x5f0
 unmap_page_range+0x33b3/0x48f0
 unmap_vmas+0x48f/0x6a0
 exit_mmap+0x280/0xa10
 __mmput+0x118/0x430
 exit_mm+0x168/0x220
 do_exit+0x6a2/0x23c0
 do_group_exit+0x21b/0x2d0
 get_signal+0x1284/0x1330
 arch_do_signal_or_restart+0xbc/0x830
 exit_to_user_mode_loop+0x86/0x480
 do_syscall_64+0x32d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f064019c819
Code: Unable to access opcode bytes at 0x7f064019c7ef.
RSP: 002b:00007f06411000e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f0640415fa8 RCX: 00007f064019c819
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f0640415fa8
RBP: 00007f0640415fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0640416038 R14: 00007ffcab9129c0 R15: 00007ffcab912aa8
 </TASK>
