WARNING: CPU: 1 PID: 9648 at drivers/gpu/drm/drm_vblank.c:1307 drm_wait_one_vblank+0x97c/0xa00 drivers/gpu/drm/drm_vblank.c:1307
Modules linked in:

CPU: 1 UID: 0 PID: 9648 Comm: syz.8.679 Not tainted 6.12.0-rc6-syzkaller-00225-g50643bbc9eb6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:drm_wait_one_vblank+0x97c/0xa00 drivers/gpu/drm/drm_vblank.c:1307
Code: 80 3c 08 00 74 08 4c 89 ff e8 90 d7 92 fc 49 8b 1f 48 c7 c7 a0 a1 73 8c 4c 89 f6 48 89 da 8b 5c 24 0c 89 d9 e8 95 07 ea fb 90 <0f> 0b 90 90 49 be 00 00 00 00 00 fc ff df e9 68 fb ff ff 44 89 e9
RSP: 0018:ffffc9000b8afac0 EFLAGS: 00010246

RAX: 84d81d682bb82100 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc9000cac8000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc9000b8afc00 R08: ffffffff8155d312 R09: 1ffffffff2859b0b
R10: dffffc0000000000 R11: fffffbfff2859b0c R12: 1ffff92001715f64
R13: 0000000000002ca7 R14: ffffffff8c86df60 R15: ffff88814270d010
FS:  00007fea7099a6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2c11fffc CR3: 0000000079a58000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 drm_fb_helper_ioctl+0x114/0x140 drivers/gpu/drm/drm_fb_helper.c:1093
 do_fb_ioctl+0x40a/0x7b0 drivers/video/fbdev/core/fb_chrdev.c:155
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fea6fb7e719
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:00007fea7099a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fea6fd35f80 RCX: 00007fea6fb7e719
RDX: 0000000000000000 RSI: 0000000040044620 RDI: 0000000000000003
RBP: 00007fea6fbf139e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fea6fd35f80 R15: 00007fea6fe5fa28
 </TASK>