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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 ffffc90008067978 by task systemd-udevd/3879

CPU: 1 PID: 3879 Comm: systemd-udevd 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_const_cmp4+0x4/0x20 kernel/kcov.c:284
Code: 84 00 00 00 00 00 48 8b 0c 24 0f b7 d6 0f b7 f7 bf 03 00 00 00 e9 cc fe ff ff 66 90 66 2e 0f 1f 84 00 00 00 00 00 48 8b 0c 24 <89> f2 89 fe bf 05 00 00 00 e9 ae fe ff ff 0f 1f 40 00 66 2e 0f 1f
RSP: 0018:ffffc90001277860 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff83646097
RDX: ffff88809f8d8180 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffff8880945a1e80 R08: 0000000000000001 R09: ffffffff8cad1e87
R10: 0000000000000010 R11: 0000000000000000 R12: 0000000000000022
R13: 00000000000000b8 R14: dffffc0000000000 R15: 0000000000000001
 tomoyo_domain_quota_is_ok+0x307/0x550 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_path_perm+0x2e7/0x3f0 security/tomoyo/file.c:838
 security_inode_getattr+0xcf/0x140 security/security.c:1278
 vfs_getattr fs/stat.c:121 [inline]
 vfs_statx+0x170/0x390 fs/stat.c:206
 vfs_lstat include/linux/fs.h:3161 [inline]
 __do_sys_newlstat+0x91/0x110 fs/stat.c:374
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:367
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f51d4faa335
Code: Bad RIP value.
RSP: 002b:00007ffd47d01748 EFLAGS: 00000246 ORIG_RAX: 0000000000000006
RAX: ffffffffffffffda RBX: 00005561ba564270 RCX: 00007f51d4faa335
RDX: 00007ffd47d01780 RSI: 00007ffd47d01780 RDI: 00005561ba563270
RBP: 00007ffd47d01840 R08: 00007f51d5269178 R09: 0000000000001010
R10: 00007f51d5268b58 R11: 0000000000000246 R12: 00005561ba563270
R13: 00005561ba563290 R14: 00005561ba55101b R15: 00005561ba551020


Memory state around the buggy address:
 ffffc90008067800: 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00
 ffffc90008067880: 00 00 00 00 00 00 00 00 00 00 f3 f3 f3 f3 f3 00
>ffffc90008067900: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1
                                                                ^
 ffffc90008067980: 00 00 00 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00
 ffffc90008067a00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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