==================================================================
BUG: KASAN: use-after-scope in lookup_object lib/debugobjects.c:157 [inline]
BUG: KASAN: use-after-scope in debug_object_deactivate+0x425/0x450 lib/debugobjects.c:540
Read of size 8 at addr ffff88019d1a5ec0 by task syz-executor3/13445

CPU: 0 PID: 13445 Comm: syz-executor3 Not tainted 4.18.0-rc3+ #45
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
PANIC: double fault, error_code: 0x0
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
CPU: 1 PID: 13451 Comm: syz-executor7 Not tainted 4.18.0-rc3+ #45
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__lock_acquire+0x2e/0x5020 kernel/locking/lockdep.c:3294
Code: 
41 57 
 print_address_description+0x6c/0x20b mm/kasan/report.c:256
41 89 
cf 41 
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412
56 41 
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433
55 
 lookup_object lib/debugobjects.c:157 [inline]
 debug_object_deactivate+0x425/0x450 lib/debugobjects.c:540
49 89 
fd 
41 54 
45 
 debug_hrtimer_deactivate kernel/time/hrtimer.c:421 [inline]
 debug_deactivate kernel/time/hrtimer.c:471 [inline]
 __run_hrtimer kernel/time/hrtimer.c:1368 [inline]
 __hrtimer_run_queues+0x2bf/0x10c0 kernel/time/hrtimer.c:1460
89 cc 
53 
65 
4c 8b 
34 25 
40 
ee 
01 
00 
48 
 hrtimer_interrupt+0x2f3/0x750 kernel/time/hrtimer.c:1518
83 e4 
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1025 [inline]
 smp_apic_timer_interrupt+0x165/0x730 arch/x86/kernel/apic/apic.c:1050
f0 
48 
81 ec 
60 
03 00 
00 48 
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:863
8b 
 </IRQ>
45 
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:783 [inline]
RIP: 0010:kmem_cache_free+0xb3/0x2d0 mm/slab.c:3757
10 <89> 
Code: 
94 24 
84 
80 
f1 00 
00 00 
00 
00 
00 
48 
41 
ba 00 
f7 
00 
c5 
00 
00 
00 
02 
00 fc 
00 
ff 
00 
df 
0f 
48 
84 
89 
c2 
84 24 
00 
98 
00 
00 
RSP: 0018:ffff880199163ec0 EFLAGS: 00010086
e8 
b0 
RAX: 0000000000000000 RBX: 1ffff1003322c855 RCX: 0000000000000002
fb 
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff88f92620
a4 
RBP: ffff880199164250 R08: 0000000000000000 R09: 0000000000000000
ff 
R10: ffff88019e5171b8 R11: ffff8801daf236b3 R12: 0000000000000000
48 
R13: ffffffff88f92620 R14: ffff8801b1e00080 R15: 0000000000000002
83 
FS:  00007f6b584e4700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
3d 
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
e0 
CR2: ffff880199163eb8 CR3: 0000000008e6a000 CR4: 00000000001406e0
03 
DR0: 00000000200001c0 DR1: 0000000000000000 DR2: 0000000000000000
38 
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
07 
Call Trace:
00