==================================================================
BUG: KASAN: stack-out-of-bounds in futex_wake+0x6b9/0x760 kernel/futex.c:1538
Read of size 8 at addr ffff88019d57f7b0 by task syz-executor1/12629
PANIC: double fault, error_code: 0x0

CPU: 1 PID: 12631 Comm: syz-executor2 Not tainted 4.18.0-rc3+ #46
CPU: 0 PID: 12629 Comm: syz-executor1 Not tainted 4.18.0-rc3+ #46
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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
Call Trace:
Code: 41 
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
57 
41 
89 
cf 
 print_address_description+0x6c/0x20b mm/kasan/report.c:256
41 
56 
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412
41 55 
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433
49 
 futex_wake+0x6b9/0x760 kernel/futex.c:1538
89 fd 
41 
54 
45 
89 
cc 
 do_futex+0x300/0x27d0 kernel/futex.c:3531
53 
65 
4c 
8b 
34 
25 40 
ee 
01 
00 
48 
83 
e4 f0 
48 
81 
ec 
60 03 
00 
00 
48 8b 
45 
10 
<89> 
94 
24 
80 
00 00 
00 
48 ba 
00 
 __do_sys_futex kernel/futex.c:3587 [inline]
 __se_sys_futex kernel/futex.c:3555 [inline]
 __x64_sys_futex+0x472/0x6a0 kernel/futex.c:3555
00 
00 
00 00 
fc 
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
ff 
df 
48 
89 
84 
24 
98 
RSP: 0018:ffff88019b91fda0 EFLAGS: 00010086
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455ab9
RAX: 0000000000000000 RBX: 1ffff10033724031 RCX: 0000000000000002
Code: 
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff88f92620
RBP: ffff88019b920130 R08: 0000000000000000 R09: 0000000000000000
1d 
R10: ffff88019d8471b8 R11: ffff8801daf236b3 R12: 0000000000000000
ba 
R13: ffffffff88f92620 R14: ffff8801a98f85c0 R15: 0000000000000002
fb 
FS:  00007ff2f0ed8700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
ff 
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
c3 
CR2: ffff88019b91fd98 CR3: 0000000008e6a000 CR4: 00000000001406e0
66 
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
2e 
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
0f 
Call Trace:
1f