syzbot

platform vkms: vblank wait timed out on crtc 0
WARNING: CPU: 1 PID: 3617 at drivers/gpu/drm/drm_vblank.c:1269 drm_wait_one_vblank+0x2bc/0x500 drivers/gpu/drm/drm_vblank.c:1269
Modules linked in:

CPU: 1 PID: 3617 Comm: syz-executor274 Not tainted 5.18.0-rc6-syzkaller-00085-gf3f19f939c11 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:drm_wait_one_vblank+0x2bc/0x500 drivers/gpu/drm/drm_vblank.c:1269
Code: 85 f6 0f 84 a3 01 00 00 e8 91 34 04 fd 4c 89 ef e8 39 17 16 00 44 89 e1 4c 89 f2 48 c7 c7 40 3b 3b 8a 48 89 c6 e8 c4 f9 b3 04 <0f> 0b e9 87 fe ff ff e8 68 34 04 fd 31 ff 4c 89 ee e8 ee 36 04 fd
RSP: 0018:ffffc9000305fb40 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000aa5 RCX: 0000000000000000
RDX: ffff8880734ee040 RSI: ffffffff815f4a18 RDI: fffff5200060bf5a
RBP: ffff888019e80000 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff815ef3ee R11: 0000000000000000 R12: 0000000000000000
R13: ffff888148622010 R14: ffff88801bab1e00 R15: ffff88801b89f030
FS:  000055555720b300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f888321b01d CR3: 0000000072f57000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 drm_fb_helper_ioctl+0x159/0x1a0 drivers/gpu/drm/drm_fb_helper.c:1229
 do_fb_ioctl+0x1d5/0x6c0 drivers/video/fbdev/core/fbmem.c:1174
 fb_ioctl+0xe7/0x150 drivers/video/fbdev/core/fbmem.c:1188
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f88831d7139
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc254f6468 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f88831d7139
RDX: 0000000000000000 RSI: 0000000040044620 RDI: 0000000000000003
RBP: 00007ffc254f6480 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 00007ffc254f647c R14: 00007ffc254f64a0 R15: 00007ffc254f6490
 </TASK>