------------[ cut here ]------------ platform vkms: [drm] vblank wait timed out on crtc 0 WARNING: CPU: 1 PID: 11003 at drivers/gpu/drm/drm_vblank.c:1307 drm_wait_one_vblank+0x334/0x550 drivers/gpu/drm/drm_vblank.c:1307 Modules linked in: CPU: 1 UID: 0 PID: 11003 Comm: syz.6.1476 Not tainted 6.12.0-syzkaller-03657-g43fb83c17ba2 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:drm_wait_one_vblank+0x334/0x550 drivers/gpu/drm/drm_vblank.c:1307 Code: 85 ed 0f 84 54 01 00 00 e8 c9 68 5f fc 4c 89 e7 e8 d1 12 87 00 89 e9 4c 89 ea 48 c7 c7 e0 a3 e7 8b 48 89 c6 e8 7d 10 20 fc 90 <0f> 0b 90 90 e9 0d fe ff ff e8 9e 68 5f fc 90 48 8d 7b 08 48 b8 00 RSP: 0018:ffffc9000435fb28 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff888024948000 RCX: ffffc9000cfe4000 RDX: 0000000000080000 RSI: ffffffff814e8a56 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 6d726f6674616c70 R12: ffff888106c24010 R13: ffff888105fc2f80 R14: 1ffff9200086bf67 R15: 0000000000000bf0 FS: 00007fa8fecd16c0(0000) GS:ffff88806a700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2c41fffc CR3: 000000004effa000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: drm_fb_helper_ioctl+0x156/0x1a0 drivers/gpu/drm/drm_fb_helper.c:1093 do_fb_ioctl+0x3d4/0x7d0 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:906 [inline] __se_sys_ioctl fs/ioctl.c:892 [inline] __x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa8fdf7e819 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:00007fa8fecd1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fa8fe135fa0 RCX: 00007fa8fdf7e819 RDX: 0000000000000000 RSI: 0000000040044620 RDI: 0000000000000004 RBP: 00007fa8fdff175e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fa8fe135fa0 R15: 00007ffe1ca5ce78