==================================================================
BUG: KASAN: stack-out-of-bounds in timerqueue_add+0x249/0x2b0 lib/timerqueue.c:52
Read of size 8 at addr ffff8801b211fcf8 by task syz-executor6/28056
PANIC: double fault, error_code: 0x0

CPU: 1 PID: 28044 Comm: syz-executor2 Not tainted 4.18.0-rc3+ #47
CPU: 0 PID: 28056 Comm: syz-executor6 Not tainted 4.18.0-rc3+ #47
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
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Code: 41 
Call Trace:
57 41 
 <IRQ>
89 
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
cf 41 
56 41 
55 49 
89 
fd 41 
 print_address_description+0x6c/0x20b mm/kasan/report.c:256
54 45 
89 cc 
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412
53 65 
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433
4c 
 timerqueue_add+0x249/0x2b0 lib/timerqueue.c:52
8b 
 enqueue_hrtimer+0x18e/0x540 kernel/time/hrtimer.c:960
34 
25 40 
ee 01 
00 48 
83 
 __run_hrtimer kernel/time/hrtimer.c:1413 [inline]
 __hrtimer_run_queues+0xc07/0x10c0 kernel/time/hrtimer.c:1460
e4 
f0 
48 81 
ec 60 
03 
00 00 
48 
8b 45 
10 
<89> 94 
 hrtimer_interrupt+0x2f3/0x750 kernel/time/hrtimer.c:1518
24 80 
 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
00 00 
00 48 
ba 00 
00 
00 
00 
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:863
00 fc 
 </IRQ>
ff df 
RIP: 0010:check_memory_region+0x1e/0x1b0 mm/kasan/kasan.c:266
48 89 
Code: 
84 
66 
24 98 
90 
RSP: 0018:ffff8801b07ffe50 EFLAGS: 00010086
66 
2e 0f 
RAX: 0000000000000000 RBX: 1ffff10036100046 RCX: 0000000000000002
1f 
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff88f92620
84 
RBP: ffff8801b08001d8 R08: 0000000000000000 R09: 0000000000000000
00 
R10: ffff8801b287f1b8 R11: ffff8801daf236b3 R12: 0000000000000000
R13: ffffffff88f92620 R14: ffff88019f3441c0 R15: 0000000000000002
00 
FS:  00007f1fa06ed700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
00 
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
00 
CR2: ffff8801b07ffe48 CR3: 00000001a3801000 CR4: 00000000001406e0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
00 
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
48