------------[ cut here ]------------
WARNING: CPU: 0 PID: 9656 at drivers/gpu/drm/vkms/vkms_crtc.c:21 vkms_vblank_simulate+0x31e/0x3b0 drivers/gpu/drm/vkms/vkms_crtc.c:21
Modules linked in:
CPU: 0 PID: 9656 Comm: syz-executor148 Not tainted 5.12.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:vkms_vblank_simulate+0x31e/0x3b0 drivers/gpu/drm/vkms/vkms_crtc.c:21
Code: 85 9e 00 00 00 48 8b 95 b8 01 00 00 4c 89 e1 bf 02 00 00 00 48 c7 c6 80 c7 d8 89 e8 8c 09 f0 ff e9 e5 fe ff ff e8 62 04 27 fd <0f> 0b e9 88 fd ff ff e8 76 b7 6a fd e9 11 fe ff ff 4c 89 ef e8 69
RSP: 0018:ffffc90000007df0 EFLAGS: 00010046
RAX: 0000000080010001 RBX: ffff888143755e58 RCX: 0000000000000000
RDX: ffff88802136d4c0 RSI: ffffffff844ced1e RDI: 0000000000000003
RBP: 0000000000000002 R08: 0000000000000001 R09: 0000000000000000
R10: ffffffff844ceaa3 R11: 0000000000000000 R12: ffff888143754d30
R13: 0000000000fe4c00 R14: ffff8880b9c26340 R15: ffffffff844cea00
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0063) knlGS:00000000f7fecb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00007feed8f02740 CR3: 00000000124e7000 CR4: 00000000001526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __run_hrtimer kernel/time/hrtimer.c:1537 [inline]
 __hrtimer_run_queues+0x609/0xe40 kernel/time/hrtimer.c:1601
 hrtimer_interrupt+0x330/0xa00 kernel/time/hrtimer.c:1663
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1106
 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:163 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:197
Code: f0 4d 89 03 e9 f2 fc ff ff b9 ff ff ff ff ba 08 00 00 00 4d 8b 03 48 0f bd ca 49 8b 45 00 48 63 c9 e9 64 ff ff ff 0f 1f 40 00 <65> 8b 05 39 fe 8d 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b
RSP: 0018:ffffc900082ff5d8 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88802136d4c0 RSI: ffffffff815c0bbf RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8fa9a8a7
R10: ffffffff815c0bb5 R11: 0000000000000000 R12: ffffffff84b28b70
R13: 0000000000000200 R14: dffffc0000000000 R15: ffffc900082ff638
 console_unlock+0x805/0xc80 kernel/printk/printk.c:2586
 vprintk_emit+0x1ca/0x560 kernel/printk/printk.c:2098
 vprintk_func+0x8d/0x1e0 kernel/printk/printk_safe.c:401
 printk+0xba/0xed kernel/printk/printk.c:2146
 set_target_expiration.cold+0xf0/0x160 arch/x86/kvm/lapic.c:1752
 __start_apic_timer arch/x86/kvm/lapic.c:1955 [inline]
 kvm_apic_set_state+0x77e/0xc40 arch/x86/kvm/lapic.c:2611
 kvm_vcpu_ioctl_set_lapic arch/x86/kvm/x86.c:4091 [inline]
 kvm_arch_vcpu_ioctl+0xbe6/0x2f90 arch/x86/kvm/x86.c:4730
 kvm_vcpu_ioctl+0x7b9/0xd90 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3468
 kvm_vcpu_compat_ioctl+0x1a2/0x340 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3512
 __do_compat_sys_ioctl+0x1d3/0x230 fs/ioctl.c:842
 do_syscall_32_irqs_on arch/x86/entry/common.c:77 [inline]
 __do_fast_syscall_32+0x56/0x90 arch/x86/entry/common.c:140
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:165
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7ff1549
Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f7fec6fc EFLAGS: 00000207 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 000000004400ae8f
RDX: 0000000020000580 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000