------------[ cut here ]------------ faux_driver vkms: [drm] vblank wait timed out on crtc 0 WARNING: CPU: 1 PID: 29066 at drivers/gpu/drm/drm_vblank.c:1308 drm_wait_one_vblank+0x2f6/0x5b0 drivers/gpu/drm/drm_vblank.c:1308 Modules linked in: CPU: 1 UID: 0 PID: 29066 Comm: syz.2.5975 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:drm_wait_one_vblank+0x2f6/0x5b0 drivers/gpu/drm/drm_vblank.c:1308 Code: ed 0f 84 12 02 00 00 e8 a8 a3 35 fc 48 89 ef e8 40 09 90 00 44 89 e1 4c 89 ea 48 c7 c7 80 e5 2b 8c 48 89 c6 e8 ab 4a f4 fb 90 <0f> 0b 90 90 e9 4e fe ff ff e8 7c a3 35 fc 48 89 ef e8 f4 87 11 06 RSP: 0018:ffffc90003cefb20 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff888142b50000 RCX: ffffc900241ca000 RDX: 0000000000080000 RSI: ffffffff817a4395 RDI: 0000000000000001 RBP: ffff888142b48000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 000000000008c578 R12: 0000000000000000 R13: ffffffff8c410540 R14: 1ffff9200079df67 R15: 0000000000015eae FS: 00007fd2ec0cb6c0(0000) GS:ffff8881247b1000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000004 CR3: 0000000042f91000 CR4: 00000000003526f0 Call Trace: drm_fb_helper_ioctl+0x156/0x1a0 drivers/gpu/drm/drm_fb_helper.c:1108 do_fb_ioctl+0x3d5/0x7e0 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:598 [inline] __se_sys_ioctl fs/ioctl.c:584 [inline] __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:584 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4e0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd2eb18eec9 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:00007fd2ec0cb038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd2eb3e6180 RCX: 00007fd2eb18eec9 RDX: 0000000000000000 RSI: 0000000040044620 RDI: 0000000000000008 RBP: 00007fd2eb211f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fd2eb3e6218 R14: 00007fd2eb3e6180 R15: 00007ffebc199e98