WARNING: CPU: 0 PID: 27591 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: 0 UID: 0 PID: 27591 Comm: syz.3.5571 Not tainted 6.12.0-syzkaller-10553-gb86545e02e8c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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 60 f4 90 fc 49 8b 1f 48 c7 c7 c0 fc 73 8c 4c 89 f6 48 89 da 8b 5c 24 0c 89 d9 e8 45 b2 e6 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:ffffc900039afac0 EFLAGS: 00010246

RAX: 77dd93e466085400 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000d1e0000 RSI: 000000000002c56a RDI: 000000000002c56b
RBP: ffffc900039afc00 R08: ffffffff81568c22 R09: 1ffffffff2864b1b
R10: dffffc0000000000 R11: fffffbfff2864b1c R12: 1ffff92000735f64
R13: 000000000000d18a R14: ffffffff8c8770a0 R15: ffff888142fc3010
FS:  00007f793db916c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002000f000 CR3: 000000005a7fc000 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:1099
 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:906 [inline]
 __se_sys_ioctl+0xf5/0x170 fs/ioctl.c:892
 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: 0033:0x7f793cd80809
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:00007f793db91058 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f793cf45fa0 RCX: 00007f793cd80809
RDX: 0000000000000000 RSI: 0000000040044620 RDI: 0000000000000007
RBP: 00007f793cdf393e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f793cf45fa0 R15: 00007f793d06fa38
 </TASK>