platform vkms: vblank wait timed out on crtc 0 WARNING: CPU: 1 PID: 4679 at drivers/gpu/drm/drm_vblank.c:1269 drm_wait_one_vblank+0x8c8/0x940 drivers/gpu/drm/drm_vblank.c:1269 Modules linked in: CPU: 1 PID: 4679 Comm: syz-executor.3 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 RIP: 0010:drm_wait_one_vblank+0x8c8/0x940 drivers/gpu/drm/drm_vblank.c:1269 Code: 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 3f ad 49 fd 4d 8b 27 48 c7 c7 c0 9d 8d 8a 4c 89 f6 4c 89 e2 89 d9 e8 b8 b2 40 05 <0f> 0b 4c 8b 64 24 08 e9 fb fb ff ff 44 89 f1 80 e1 07 80 c1 03 38 RSP: 0018:ffffc9000325faa0 EFLAGS: 00010246 RAX: 88b291eefafdc900 RBX: 0000000000000000 RCX: ffff88807a888000 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc9000325fbe0 R08: ffffffff901ee11f R09: 1ffffffff203dc23 R10: dffffc0000000000 R11: fffffbfff203dc24 R12: ffff888146c00578 R13: dffffc0000000000 R14: ffffffff8a9c7260 R15: ffff88802092e010 FS: 00007f05eb3e76c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa1a0023000 CR3: 0000000024b83000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: drm_fb_helper_ioctl+0x112/0x140 drivers/gpu/drm/drm_fb_helper.c:1196 do_fb_ioctl+0x281/0x850 drivers/video/fbdev/core/fbmem.c:1192 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f05ec056079 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 d0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f05eb3e70b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f05ec194f80 RCX: 00007f05ec056079 RDX: 0000000000000000 RSI: 0000000040044620 RDI: 0000000000000003 RBP: 00007f05ec0b7498 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f05ec194f80 R15: 00007ffe2c2ca368