WARNING: CPU: 1 PID: 6043 at drivers/gpu/drm/drm_vblank.c:1269 drm_wait_one_vblank+0x91f/0x9a0 drivers/gpu/drm/drm_vblank.c:-1
Modules linked in:
CPU: 1 PID: 6043 Comm: syz.3.437 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:drm_wait_one_vblank+0x91f/0x9a0 drivers/gpu/drm/drm_vblank.c:1269
Code: 3c 08 00 74 08 48 89 df e8 5e 30 58 fd 4c 8b 3b 48 c7 c7 00 c0 6c 8a 4c 89 f6 4c 89 fa 8b 5c 24 0c 89 d9 e8 d3 85 3a 05 89 de <0f> 0b 49 bf 00 00 00 00 00 fc ff df e9 9c fb ff ff 89 d9 80 e1 07
RSP: 0018:ffffc9000300faa0 EFLAGS: 00010246
RAX: 1fa61ca89eadbc00 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000f04b000 RSI: 0000000000000000 RDI: 000000000006e8a8
RBP: ffffc9000300fbe0 R08: dffffc0000000000 R09: fffffbfff1ff7a24
R10: fffffbfff1ff7a24 R11: 1ffffffff1ff7a23 R12: 0000000000000000
R13: 1ffff92000601f60 R14: ffffffff8a7b8960 R15: ffff888146d9cd98
FS:  00007f47f2b186c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 0000000061108000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 drm_fb_helper_ioctl+0x112/0x140 drivers/gpu/drm/drm_fb_helper.c:1196
 do_fb_ioctl+0x1d3/0x720 drivers/video/fbdev/core/fbmem.c:1192
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f47f48d1fc9
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:00007f47f2b18038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f47f4b29090 RCX: 00007f47f48d1fc9
RDX: 0000000000000000 RSI: 0000000040044620 RDI: 0000000000000004
RBP: 00007f47f4954f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f47f4b29128 R14: 00007f47f4b29090 R15: 00007ffc17495328
 </TASK>