WARNING: CPU: 0 PID: 679 at drivers/gpu/drm/drm_vblank.c:1269 drm_wait_one_vblank+0x958/0x9d0 drivers/gpu/drm/drm_vblank.c:1269
Modules linked in:
CPU: 0 PID: 679 Comm: syz-executor.1 Not tainted 6.1.38-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
RIP: 0010:drm_wait_one_vblank+0x958/0x9d0 drivers/gpu/drm/drm_vblank.c:1269
Code: df 80 3c 08 00 74 08 4c 89 ff e8 13 58 1b fd 49 8b 1f 48 c7 c7 c0 f7 4e 8b 4c 89 f6 48 89 da 8b 5c 24 0c 89 d9 e8 18 61 8d 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:ffffc90015a47ac0 EFLAGS: 00010246
RAX: f79631425742da00 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc90003c01000 RSI: 000000000003055e RDI: 000000000003055f
RBP: ffffc90015a47c00 R08: ffffffff81524cae R09: fffff52002b48f11
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92002b48f64
R13: 000000000000ef89 R14: ffffffff8b5fcd60 R15: ffff8880201e0010
FS:  00007f2f6fe89700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5ab39aafc0 CR3: 000000004b0bf000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 drm_fb_helper_ioctl+0x110/0x140 drivers/gpu/drm/drm_fb_helper.c:1267
 do_fb_ioctl+0x1d3/0x850 drivers/video/fbdev/core/fbmem.c:1190
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f2f6f08c389
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2f6fe89168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f2f6f1abf80 RCX: 00007f2f6f08c389
RDX: 0000000000000000 RSI: 0000000040044620 RDI: 0000000000000003
RBP: 00007f2f6f0d7493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcc78f02af R14: 00007f2f6fe89300 R15: 0000000000022000
 </TASK>