now=93531904774 interval=0 ret_overrun=216994
------------[ cut here ]------------
WARNING: CPU: 1 PID: 7841 at drivers/gpu/drm/vkms/vkms_crtc.c:27 vkms_vblank_simulate.cold+0x1a/0x28 drivers/gpu/drm/vkms/vkms_crtc.c:24
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 7841 Comm: syz-executor.2 Not tainted 5.7.0-rc7-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+0x197/0x210 lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x3e kernel/panic.c:582
 report_bug+0x289/0x300 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:175 [inline]
 fixup_bug arch/x86/kernel/traps.c:170 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:vkms_vblank_simulate.cold+0x1a/0x28 drivers/gpu/drm/vkms/vkms_crtc.c:27
Code: 48 8b 45 d8 eb b6 e8 bd 11 99 fd e9 2f ff ff ff e8 03 14 5a fd 4c 89 e1 4c 89 fa 4c 89 ee 48 c7 c7 00 67 46 88 e8 42 fe 42 fd <0f> 0b e9 7f ee ff ff cc cc cc cc cc cc cc 55 48 89 e5 41 55 49 89
RSP: 0018:ffff8880aeb09dc0 EFLAGS: 00010086
RAX: 000000000000002d RBX: ffff888218d15830 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815eeb16 RDI: ffffed1015d613aa
RBP: ffff8880aeb09df0 R08: 000000000000002d R09: ffffed1015d666a9
R10: ffff8880aeb33547 R11: ffffed1015d666a8 R12: 0000000000034fa2
R13: 00000015c6ef9b06 R14: ffff888218d14ce0 R15: 0000000000000000
 __run_hrtimer kernel/time/hrtimer.c:1520 [inline]
 __hrtimer_run_queues+0x20f/0xf70 kernel/time/hrtimer.c:1584
 hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1646
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1113 [inline]
 smp_apic_timer_interrupt+0x160/0x610 arch/x86/kernel/apic/apic.c:1138
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:759 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x90/0xe0 kernel/locking/spinlock.c:191
Code: 48 c7 c0 a0 c3 34 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 39 48 83 3d b7 c0 a8 01 00 74 24 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 d1 6c c4 f9 65 8b 05 c2 1b 76 78
RSP: 0018:ffff8880965bfab0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff1269874 RBX: 0000000000000286 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000006 RDI: 0000000000000286
RBP: ffff8880965bfac0 R08: ffff8880958f0200 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888218d14338
R13: 0000000000000000 R14: ffff888218d14338 R15: ffff8880a3b11928
 spin_unlock_irqrestore include/linux/spinlock.h:408 [inline]
 drm_vblank_get+0x153/0x1e0 drivers/gpu/drm/drm_vblank.c:1101
 drm_wait_vblank_ioctl+0x41a/0x1940 drivers/gpu/drm/drm_vblank.c:1722
 drm_ioctl_kernel+0x244/0x300 drivers/gpu/drm/drm_ioctl.c:787
 drm_ioctl+0x54e/0xa60 drivers/gpu/drm/drm_ioctl.c:887
 vfs_ioctl fs/ioctl.c:47 [inline]
 ksys_ioctl+0x123/0x180 fs/ioctl.c:771
 __do_sys_ioctl fs/ioctl.c:780 [inline]
 __se_sys_ioctl fs/ioctl.c:778 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:778
 do_syscall_64+0xfa/0x7e0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x45a649
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fa97067ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a649
RDX: 0000000020000100 RSI: 00000000c018643a RDI: 0000000000000003
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa97067b6d4
R13: 00000000004c2a1e R14: 00000000004d6af8 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..