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BUG: KASAN: stack-out-of-bounds in csd_lock_record+0xcb/0xe0 kernel/smp.c:118
Read of size 8 at addr ffffc90007f8fb70 by task syz-executor.0/15427

CPU: 1 PID: 15427 Comm: syz-executor.0 Not tainted 5.8.0-rc3-next-20200703-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x18f/0x20d lib/dump_stack.c:118
 print_address_description.constprop.0.cold+0x5/0x436 mm/kasan/report.c:383
 __kasan_report mm/kasan/report.c:513 [inline]
 kasan_report.cold+0x1f/0x37 mm/kasan/report.c:530
 csd_lock_record+0xcb/0xe0 kernel/smp.c:118
 flush_smp_call_function_queue+0x285/0x730 kernel/smp.c:391
 __sysvec_call_function_single+0x98/0x490 arch/x86/kernel/smp.c:248
 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline]
 sysvec_call_function_single+0xe0/0x120 arch/x86/kernel/smp.c:243
 asm_sysvec_call_function_single+0x12/0x20 arch/x86/include/asm/idtentry.h:604
RIP: 0010:__sanitizer_cov_trace_switch+0x45/0x70 kernel/kcov.c:319
Code: 43 48 83 f8 10 75 28 bf 03 00 00 00 4c 8b 65 00 31 db 4d 85 e4 74 18 48 8b 74 dd 10 48 83 c3 01 48 8b 4c 24 18 e8 3b fe ff ff <49> 39 dc 75 e8 5b 5d 41 5c c3 48 83 f8 40 bf 07 00 00 00 74 cd 5b
RSP: 0018:ffffc90003807a08 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffffff83645f59
RDX: 0000000000000000 RSI: ffff8880481d2580 RDI: 0000000000000001
RBP: ffffffff888d26e0 R08: 0000000000000001 R09: ffffffff8cad1e87
R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000007
R13: 000000000000013a R14: dffffc0000000000 R15: 0000000000000000
 tomoyo_domain_quota_is_ok+0x1c9/0x550 security/tomoyo/util.c:1039
 tomoyo_supervisor+0x2d4/0xeb0 security/tomoyo/common.c:2089
 tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline]
 tomoyo_path_number_perm+0x3ed/0x4d0 security/tomoyo/file.c:734
 security_file_ioctl+0x50/0xb0 security/security.c:1480
 ksys_ioctl+0x50/0x180 fs/ioctl.c:747
 __do_sys_ioctl fs/ioctl.c:762 [inline]
 __se_sys_ioctl fs/ioctl.c:760 [inline]
 __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:760
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:367
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45cb29
Code: Bad RIP value.
RSP: 002b:00007f0a2f81dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004f0ca0 RCX: 000000000045cb29
RDX: 0000000000000000 RSI: 0000000040045567 RDI: 0000000000000005
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000005d8 R14: 00000000004c8aed R15: 00007f0a2f81e6d4


Memory state around the buggy address:
 ffffc90007f8fa00: 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00
 ffffc90007f8fa80: 00 00 00 00 00 00 00 00 00 00 f3 f3 f3 f3 f3 00
>ffffc90007f8fb00: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1
                                                             ^
 ffffc90007f8fb80: 00 00 00 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00
 ffffc90007f8fc00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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