================================================================== BUG: KASAN: out-of-bounds in csd_lock_record+0xcb/0xe0 kernel/smp.c:118 Read of size 8 at addr ffffc900018a77b0 by task syz-executor.3/6003 CPU: 1 PID: 6003 Comm: syz-executor.3 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: __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 __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:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:196 Code: 48 89 ef 5d e9 91 19 3f 00 5d be 03 00 00 00 e9 a6 66 25 02 66 0f 1f 44 00 00 48 8b be b0 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 <65> 48 8b 14 25 c0 fe 01 00 65 8b 05 70 f7 8d 7e a9 00 01 ff 00 48 RSP: 0018:ffffc9000462fa20 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000004 RCX: ffffffff83646097 RDX: 0000000000000001 RSI: ffff88809556c280 RDI: 0000000000000005 RBP: ffff888097717d00 R08: 0000000000000001 R09: ffffffff8cad1e87 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000030 R13: 0000000000000362 R14: dffffc0000000000 R15: 0000000000000001 tomoyo_domain_quota_is_ok+0x311/0x550 security/tomoyo/util.c:1072 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:00007fc49246dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000004f37a0 RCX: 000000000045cb29 RDX: 0000000020000040 RSI: 0000000000008933 RDI: 0000000000000003 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000684 R14: 00000000004d5318 R15: 00007fc49246e6d4 Memory state around the buggy address: ffffc900018a7680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc900018a7700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffffc900018a7780: f1 f1 f1 f1 00 00 00 00 f3 f3 f3 f3 00 00 00 00 ^ ffffc900018a7800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc900018a7880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================