kvm: pic: single mode not supported ================================================================== BUG: KASAN: stack-out-of-bounds in __read_once_size include/linux/compiler.h:188 [inline] BUG: KASAN: stack-out-of-bounds in unwind_next_frame.part.7+0x801/0x9e0 arch/x86/kernel/unwind_frame.c:326 Read of size 8 at addr ffff88017c386c78 by task syz-executor0/22016 CPU: 1 PID: 22016 Comm: syz-executor0 Not tainted 4.18.0-rc1+ #109 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+0x1c9/0x2b4 lib/dump_stack.c:113 print_address_description+0x6c/0x20b mm/kasan/report.c:256 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433 __read_once_size include/linux/compiler.h:188 [inline] unwind_next_frame.part.7+0x801/0x9e0 arch/x86/kernel/unwind_frame.c:326 unwind_next_frame+0x3e/0x50 arch/x86/kernel/unwind_frame.c:287 __save_stack_trace+0x7d/0xf0 arch/x86/kernel/stacktrace.c:44 save_stack_trace+0x1a/0x20 arch/x86/kernel/stacktrace.c:60 save_trace+0xe0/0x290 kernel/locking/lockdep.c:404 check_prev_add kernel/locking/lockdep.c:1915 [inline] check_prevs_add kernel/locking/lockdep.c:1980 [inline] validate_chain kernel/locking/lockdep.c:2421 [inline] __lock_acquire+0x39a8/0x5020 kernel/locking/lockdep.c:3435 lock_acquire+0x1e4/0x540 kernel/locking/lockdep.c:3924 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144 vprintk_emit+0x191/0xdf0 kernel/printk/printk.c:1848 vprintk_default+0x28/0x30 kernel/printk/printk.c:1948 vprintk_func+0x7a/0xe7 kernel/printk/printk_safe.c:382 printk+0xa7/0xcf kernel/printk/printk.c:1981 kasan_die_handler.cold.22+0x11/0x30 arch/x86/mm/kasan_init_64.c:251 notifier_call_chain+0x180/0x390 kernel/notifier.c:93 __atomic_notifier_call_chain kernel/notifier.c:183 [inline] atomic_notifier_call_chain+0x98/0x190 kernel/notifier.c:193 notify_die+0x1be/0x2e0 kernel/notifier.c:549 do_general_protection+0x248/0x2f0 arch/x86/kernel/traps.c:559 general_protection+0x1e/0x30 arch/x86/entry/entry_64.S:1159 RIP: 0010:msr_write_intercepted arch/x86/kvm/vmx.c:2327 [inline] RIP: 0010:vmx_vcpu_run+0x131a/0x2600 arch/x86/kvm/vmx.c:10149 Code: 00 00 10 89 de e8 36 65 5c 00 85 db 0f 84 91 00 00 00 e8 19 64 5c 00 48 8b 54 24 08 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 8c 10 00 00 48 8b 04 24 48 8b 98 40 57 00 00 48 RSP: 0018:ffff88017c387370 EFLAGS: 00010002 RAX: dffffc0000000000 RBX: 0000000010000000 RCX: ffffffff811f467a RDX: 000000000000045b RSI: ffffffff811f4687 RDI: 0000000000000005 RBP: ffff88017c3873a8 R08: ffff8801b0e4a080 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 The buggy address belongs to the page: page:ffffea0005f0e180 count:0 mapcount:0 mapping:0000000000000000 index:0xffff88017c386940 flags: 0x2fffc0000000000() raw: 02fffc0000000000 0000000000000000 dead000000000200 0000000000000000 raw: ffff88017c386940 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88017c386b00: f2 f2 f8 f2 f2 f2 f2 f2 f2 f2 00 f2 f2 f2 f2 f2 ffff88017c386b80: f2 f2 f8 f2 f2 f2 f2 f2 f2 f2 00 f2 f2 f2 f2 f2 >ffff88017c386c00: f2 f2 f8 f2 f2 f2 00 00 00 00 00 00 00 f2 f2 f2 ^ ffff88017c386c80: 00 f2 f2 f2 f2 f2 f2 f2 00 f2 f1 f1 f1 f1 00 f2 ffff88017c386d00: f2 f2 f2 f2 f2 f2 f8 f2 f2 f2 f2 f2 00 00 00 00 ==================================================================