------------[ cut here ]------------
platform vkms: [drm] vblank wait timed out on crtc 0
WARNING: CPU: 3 PID: 10350 at drivers/gpu/drm/drm_vblank.c:1307 drm_wait_one_vblank+0x334/0x550 drivers/gpu/drm/drm_vblank.c:1307
Modules linked in:
CPU: 3 UID: 0 PID: 10350 Comm: syz.2.1126 Not tainted 6.12.0-rc7-syzkaller-00212-g4a5df3796467 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:drm_wait_one_vblank+0x334/0x550 drivers/gpu/drm/drm_vblank.c:1307
Code: 85 ed 0f 84 54 01 00 00 e8 89 45 61 fc 4c 89 e7 e8 71 fd 86 00 89 e9 4c 89 ea 48 c7 c7 80 6b e7 8b 48 89 c6 e8 ed 36 22 fc 90 <0f> 0b 90 90 e9 0d fe ff ff e8 5e 45 61 fc 90 48 8d 7b 08 48 b8 00
RSP: 0018:ffffc90004897b28 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff888025090000 RCX: ffffffff814e6e79
RDX: ffff88803057c880 RSI: ffffffff814e6e86 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888106ea0010
R13: ffff888022cbe9c0 R14: 1ffff92000912f67 R15: 000000000000112e
FS:  00007f17dc43f6c0(0000) GS:ffff88806a900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f17dc3fdd58 CR3: 0000000044ba8000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 drm_fb_helper_ioctl+0x156/0x1a0 drivers/gpu/drm/drm_fb_helper.c:1093
 do_fb_ioctl+0x3d4/0x7d0 drivers/video/fbdev/core/fb_chrdev.c:155
 fb_ioctl+0xe5/0x150 drivers/video/fbdev/core/fb_chrdev.c:169
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl fs/ioctl.c:893 [inline]
 __x64_sys_ioctl+0x18f/0x220 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f17db57e719
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f17dc43f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f17db735f80 RCX: 00007f17db57e719
RDX: 0000000000000000 RSI: 0000000040044620 RDI: 0000000000000003
RBP: 00007f17db5f175e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f17db735f80 R15: 00007ffcd3c2e298
 </TASK>