------------[ cut here ]------------
ODEBUG: free active (active state 0) object: ffff888170ea5c90 object type: timer_list hint: rose_t0timer_expiry+0x0/0x560
WARNING: lib/debugobjects.c:632 at debug_check_no_obj_freed+0x405/0x550, CPU#1: syz-executor/5803
Modules linked in:
CPU: 1 UID: 0 PID: 5803 Comm: syz-executor 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:ffffc90000a08b68 EFLAGS: 00010246
RAX: ffffffff8a969420 RBX: ffffffff9a536ea0 RCX: 0000000000000000
RDX: ffffffff8c27cdc0 RSI: ffffffff8c27c840 RDI: ffffffff901c68f0
RBP: ffffffff8bcf3dc0 R08: ffff888170ea5c90 R09: ffffffff8bcf50e0
R10: dffffc0000000000 R11: ffffffff81b1e960 R12: ffff888170ea5e00
R13: ffffffff901c68f0 R14: ffff888170ea5000 R15: ffff888170ea5c90
FS:  0000555595213500(0000) GS:ffff8882a945c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8ee41456b8 CR3: 0000000172444000 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_release+0x44/0x3d0
Code: 8b 05 60 85 7a 11 48 89 44 24 28 0f 1f 44 00 00 65 8b 05 63 85 7a 11 83 f8 08 0f 83 56 02 00 00 89 c0 48 0f a3 05 cc e9 6f 0e <73> 0d e8 75 f9 08 00 84 c0 0f 84 94 02 00 00 83 3d c6 1c 70 0e 00
RSP: 0018:ffffc900046d7260 EFLAGS: 00000297
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffff888172351d40
RDX: 0000000000000000 RSI: ffffffff823c29f8 RDI: ffffffff8e75e520
RBP: ffff888163165030 R08: ffff88816316502f R09: 1ffff1102c62ca05
R10: dffffc0000000000 R11: ffffed102c62ca06 R12: ffffffff823c29f8
R13: ffffffff823c29f8 R14: ffffffff8e75e520 R15: 0000000000000003
 page_table_check_set+0x4d7/0x610
 copy_pmd_range+0x4f5a/0x8050
 copy_page_range+0xbe8/0x11f0
 dup_mmap+0xf40/0x1d90
 copy_mm+0x13b/0x4a0
 copy_process+0x18b6/0x3cd0
 kernel_clone+0x248/0x8e0
 __x64_sys_clone+0x1b6/0x230
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8ee33c5212
Code: 89 e7 e8 71 8b f7 ff 45 31 c0 31 d2 31 f6 64 48 8b 04 25 10 00 00 00 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 66 89 c5 85 c0 75 3b 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffc01f4e220 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffc01f4e220 RCX: 00007f8ee33c5212
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffc01f4e3ac R08: 0000000000000000 R09: 0000000000000001
R10: 00005555952137d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 0000000000062a12 R15: 00007ffc01f4e400
 </TASK>
