------------[ cut here ]------------
ODEBUG: free active (active state 0) object: ffff8881101ac090 object type: timer_list hint: rose_t0timer_expiry+0x0/0x350
WARNING: lib/debugobjects.c:615 at debug_check_no_obj_freed+0x405/0x550, CPU#0: syz-executor/5839
Modules linked in:
CPU: 0 UID: 0 PID: 5839 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 1f 87 fd 48 8b 44 24 20 4c 8b 4d 00 4c 89 ef 48 c7 c6 c0 3e e7 8b 48 c7 c2 40 44 e7 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:ffffc90000007b70 EFLAGS: 00010246
RAX: ffffffff8a66b330 RBX: ffffffff99fac700 RCX: 0000000000000000
RDX: ffffffff8be74440 RSI: ffffffff8be73ec0 RDI: ffffffff8fd93ff0
RBP: ffffffff8b8f3e40 R08: ffff8881101ac090 R09: ffffffff8b8f5160
R10: dffffc0000000000 R11: ffffffff81af7940 R12: ffff8881101ac200
R13: ffffffff8fd93ff0 R14: ffff8881101ac000 R15: ffff8881101ac090
FS:  000055555dd67500(0000) GS:ffff88818e324000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3882f2 CR3: 0000000160ea2000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 kfree+0x139/0x650
 rose_timer_expiry+0x4cb/0x600
 call_timer_fn+0x192/0x5a0
 __run_timer_base+0x652/0x8b0
 run_timer_softirq+0xb7/0x170
 handle_softirqs+0x22a/0x7c0
 __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:copy_pmd_range+0x9e0/0x7f80
Code: 01 0f 85 0e 72 00 00 4c 89 f7 be 08 00 00 00 e8 06 ab 18 00 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 80 a8 18 00 <4c> 89 f0 4c 8b 74 24 60 4d 29 fe 49 c1 ee 0c 48 8b 18 83 e3 40 31
RSP: 0018:ffffc90004cd73e0 EFLAGS: 00000246
RAX: 1ffffd40008bf7b0 RBX: 0000000000000000 RCX: ffffffff8210f53a
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffea00045fbd80
RBP: ffffc90004cd7670 R08: ffffea00045fbd87 R09: 1ffffd40008bf7b0
R10: dffffc0000000000 R11: fffff940008bf7b1 R12: ffffea00045fbd80
R13: dffffc0000000000 R14: ffffea00045fbd80 R15: 00007fb63d2f3000
 copy_page_range+0xb8d/0x11c0
 dup_mmap+0xf70/0x1bb0
 copy_mm+0x13b/0x4b0
 copy_process+0x166e/0x3980
 kernel_clone+0x248/0x870
 __x64_sys_clone+0x1b6/0x230
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb63d9c3752
Code: 89 e7 e8 f1 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:00007fff393e5490 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fff393e5490 RCX: 00007fb63d9c3752
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007fff393e561c R08: 0000000000000000 R09: 0000000000000001
R10: 000055555dd677d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 000000000006537b R15: 00007fff393e5670
 </TASK>
