------------[ cut here ]------------ platform vkms: [drm] vblank wait timed out on crtc 0 WARNING: CPU: 1 PID: 6144 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: 1 UID: 0 PID: 6144 Comm: syz.2.45 Not tainted 6.16.0-syzkaller-04405-g4b290aae788e #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 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 59 db b6 fc 4d 8b 2c 24 48 c7 c7 a0 73 f5 8b 4c 89 fe 4c 89 ea 44 89 f1 e8 40 61 18 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:ffffc9000b647ae0 EFLAGS: 00010246 RAX: 910a7e6e96881200 RBX: 1ffff110284f7c01 RCX: 0000000000080000 RDX: ffffc9000fd66000 RSI: 000000000007ffff RDI: 0000000000080000 RBP: ffffc9000b647be0 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1bfa5cc R12: ffff88802471f010 R13: ffff888140f30fa0 R14: 0000000000000000 R15: ffffffff8c09a7a0 FS: 00007f1cb393e6c0(0000) GS:ffff888125d86000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7aeb2e56c0 CR3: 00000000537cf000 CR4: 0000000000350ef0 Call Trace: drm_fb_helper_ioctl+0x116/0x140 drivers/gpu/drm/drm_fb_helper.c:1107 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+0xfc/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: 0033:0x7f1cb2b8e9a9 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:00007f1cb393e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f1cb2db6160 RCX: 00007f1cb2b8e9a9 RDX: 0000000000000000 RSI: 0000000040044620 RDI: 000000000000000a RBP: 00007f1cb2c10d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f1cb2db6160 R15: 00007ffdd47ba148