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BUG: KASAN: stack-out-of-bounds in csd_lock_record+0xd2/0xe0 kernel/smp.c:119
Read of size 8 at addr ffffc9000d29f978 by task syz-executor.1/11068

CPU: 1 PID: 11068 Comm: syz-executor.1 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+0xd2/0xe0 kernel/smp.c:119
 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_pc+0x52/0x60 kernel/kcov.c:205
Code: 74 2b 8b 82 e8 13 00 00 83 f8 02 75 20 48 8b 8a f0 13 00 00 8b 92 ec 13 00 00 48 8b 01 48 83 c0 01 48 39 c2 76 07 48 89 34 c1 <48> 89 01 c3 66 2e 0f 1f 84 00 00 00 00 00 41 55 41 54 49 89 fc 55
RSP: 0018:ffffc90007f37598 EFLAGS: 00000212
RAX: 000000000000adf9 RBX: 0000000000000003 RCX: ffffc90004349000
RDX: 0000000000040000 RSI: ffffffff83646081 RDI: 0000000000000001
RBP: ffff88809186c400 R08: 0000000000000001 R09: ffffffff8cad1e87
R10: 0000000000000010 R11: 0000000000000000 R12: 0000000000000010
R13: 0000000000000045 R14: dffffc0000000000 R15: 0000000000000000
 tomoyo_domain_quota_is_ok+0x2f1/0x550 security/tomoyo/util.c:1071
 tomoyo_supervisor+0x2d4/0xeb0 security/tomoyo/common.c:2089
 tomoyo_audit_path_log security/tomoyo/file.c:168 [inline]
 tomoyo_path_permission security/tomoyo/file.c:587 [inline]
 tomoyo_path_permission+0x25c/0x360 security/tomoyo/file.c:573
 tomoyo_check_open_permission+0x30f/0x380 security/tomoyo/file.c:780
 tomoyo_file_open security/tomoyo/tomoyo.c:313 [inline]
 tomoyo_file_open+0xa3/0xd0 security/tomoyo/tomoyo.c:308
 security_file_open+0x52/0x3f0 security/security.c:1574
 do_dentry_open+0x358/0x11b0 fs/open.c:809
 do_open fs/namei.c:3249 [inline]
 path_openat+0x1bb9/0x2750 fs/namei.c:3366
 do_filp_open+0x17e/0x3c0 fs/namei.c:3393
 do_sys_openat2+0x16f/0x3b0 fs/open.c:1173
 do_sys_open fs/open.c:1189 [inline]
 __do_sys_openat fs/open.c:1203 [inline]
 __se_sys_openat fs/open.c:1198 [inline]
 __x64_sys_openat+0x13f/0x1f0 fs/open.c:1198
 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:00007f72658c1c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00000000004f8220 RCX: 000000000045cb29
RDX: 0000000000020002 RSI: 0000000020000100 RDI: ffffffffffffff9c
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000007ae R14: 00000000004ca9c6 R15: 00007f72658c26d4


Memory state around the buggy address:
 ffffc9000d29f800: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1
 ffffc9000d29f880: 00 00 00 00 00 00 00 00 00 00 00 f3 f3 f3 f3 f3
>ffffc9000d29f900: 00 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1
                                                                ^
 ffffc9000d29f980: f1 00 00 00 f3 f3 f3 f3 f3 00 00 00 00 00 00 00
 ffffc9000d29fa00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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