------------[ cut here ]------------ platform vkms: vblank wait timed out on crtc 0 WARNING: CPU: 0 PID: 5134 at drivers/gpu/drm/drm_vblank.c:1269 drm_wait_one_vblank+0x95a/0x9e0 drivers/gpu/drm/drm_vblank.c:1269 Modules linked in: CPU: 1 PID: 5134 Comm: syz.4.213 Not tainted 5.15.173-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:drm_wait_one_vblank+0x95a/0x9e0 drivers/gpu/drm/drm_vblank.c:1269 Code: df 80 3c 08 00 74 08 4c 89 ff e8 41 ee 23 fd 49 8b 1f 48 c7 c7 60 02 0d 8b 4c 89 f6 48 89 da 8b 5c 24 0c 89 d9 e8 b6 b1 a5 fc <0f> 0b 49 be 00 00 00 00 00 fc ff df e9 80 fb ff ff 44 89 e9 80 e1 RSP: 0018:ffffc9000300fac0 EFLAGS: 00010246 RAX: b8072ffce45ec800 RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc9000e49a000 RSI: 0000000000021620 RDI: 0000000000021621 RBP: ffffc9000300fc00 R08: ffffffff81669a1c R09: fffffbfff213102c R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000601f64 R13: 0000000000002370 R14: ffffffff8b1bc540 R15: ffff88801fe1f010 FS: 00007fd3d2f546c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f369b8ecfac CR3: 0000000055052000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: drm_fb_helper_ioctl+0x110/0x140 drivers/gpu/drm/drm_fb_helper.c:1196 do_fb_ioctl+0x1d2/0x890 drivers/video/fbdev/core/fbmem.c:1191 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fd3d50de849 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:00007fd3d2f54058 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd3d52a3fa0 RCX: 00007fd3d50de849 RDX: 0000000000000000 RSI: 0000000040044620 RDI: 0000000000000003 RBP: 00007fd3d5151986 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fd3d52a3fa0 R15: 00007fff891ebc48