------------[ cut here ]------------ faux_driver vkms: [drm] vblank wait timed out on crtc 0 WARNING: CPU: 0 PID: 9236 at drivers/gpu/drm/drm_vblank.c:1308 drm_wait_one_vblank+0x571/0x5b0 drivers/gpu/drm/drm_vblank.c:1308 Modules linked in: CPU: 0 UID: 0 PID: 9236 Comm: syz.3.644 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:drm_wait_one_vblank+0x571/0x5b0 drivers/gpu/drm/drm_vblank.c:1308 Code: ff df 80 3c 08 00 74 08 4c 89 e7 e8 19 4c be fc 4d 8b 2c 24 48 c7 c7 a0 a2 74 8b 4c 89 fe 4c 89 ea 44 89 f1 e8 40 d6 23 fc 90 <0f> 0b 90 90 49 bd 00 00 00 00 00 fc ff df e9 a7 fc ff ff 44 89 f9 RSP: 0018:ffffc90003fd7ae0 EFLAGS: 00010246 RAX: fdf2e981c2d68400 RBX: 1ffff110048a9c01 RCX: 0000000000080000 RDX: ffffc900114c0000 RSI: 00000000000006a7 RDI: 00000000000006a8 RBP: ffffc90003fd7be0 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: ffffed1017104863 R12: ffff888142b2e000 R13: ffffffff8b785260 R14: 0000000000000000 R15: ffffffff8b79eea0 FS: 00007f932fbc46c0(0000) GS:ffff8881268bc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb832913235 CR3: 000000005dd76000 CR4: 00000000003526f0 Call Trace: drm_fb_helper_ioctl+0x116/0x140 drivers/gpu/drm/drm_fb_helper.c:1108 do_fb_ioctl+0x45c/0x750 drivers/video/fbdev/core/fb_chrdev.c:155 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:598 [inline] __se_sys_ioctl+0xff/0x170 fs/ioctl.c:584 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f933199ec29 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:00007f932fbc4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f9331be6180 RCX: 00007f933199ec29 RDX: 0000000000000000 RSI: 0000000040044620 RDI: 0000000000000005 RBP: 00007f9331a21e41 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f9331be6218 R14: 00007f9331be6180 R15: 00007ffe4a7702e8