------------[ cut here ]------------ platform vkms: [drm] vblank wait timed out on crtc 0 WARNING: CPU: 0 PID: 9361 at drivers/gpu/drm/drm_vblank.c:1307 drm_wait_one_vblank+0x333/0x550 drivers/gpu/drm/drm_vblank.c:1307 Modules linked in: CPU: 0 UID: 0 PID: 9361 Comm: syz.2.904 Not tainted 6.11.0-rc7-syzkaller-00097-g196145c606d0 #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+0x333/0x550 drivers/gpu/drm/drm_vblank.c:1307 Code: 85 ed 0f 84 54 01 00 00 e8 aa e9 68 fc 4c 89 e7 e8 d2 84 85 00 89 e9 4c 89 ea 48 c7 c7 40 9f c6 8b 48 89 c6 e8 be 34 2b fc 90 <0f> 0b 90 90 e9 0e fe ff ff e8 7f e9 68 fc 90 48 8d 7b 08 48 b8 00 RSP: 0018:ffffc90006477b28 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff88802546c000 RCX: ffffc90029532000 RDX: 0000000000040000 RSI: ffffffff814e1d16 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff888025514010 R13: ffff8880243b55c0 R14: 1ffff92000c8ef67 R15: 0000000000002826 FS: 00007f9c765786c0(0000) GS:ffff88806a600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555568ea9808 CR3: 000000002bbf2000 CR4: 0000000000350ef0 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:1099 do_fb_ioctl+0x3d4/0x7d0 drivers/video/fbdev/core/fb_chrdev.c:155 fb_ioctl+0xf1/0x160 drivers/video/fbdev/core/fb_chrdev.c:169 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __x64_sys_ioctl+0x193/0x220 fs/ioctl.c:893 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: 0033:0x7f9c7577def9 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:00007f9c76578038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f9c75935f80 RCX: 00007f9c7577def9 RDX: 0000000000000000 RSI: 0000000040044620 RDI: 0000000000000003 RBP: 00007f9c757f0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f9c75935f80 R15: 00007ffef298c578