WARNING: CPU: 1 PID: 4851 at drivers/gpu/drm/drm_vblank.c:1269 drm_wait_one_vblank+0x932/0x9b0 drivers/gpu/drm/drm_vblank.c:-1
Modules linked in:
CPU: 1 PID: 4851 Comm: syz-executor.2 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:drm_wait_one_vblank+0x932/0x9b0 drivers/gpu/drm/drm_vblank.c:1269
Code: df 80 3c 08 00 74 08 48 89 df e8 d9 68 4e fd 4c 8b 3b 48 c7 c7 20 52 8d 8a 4c 89 f6 4c 89 fa 44 89 e1 e8 01 64 41 05 44 89 e6 <0f> 0b 49 bf 00 00 00 00 00 fc ff df e9 ac fb ff ff 89 d9 80 e1 07
RSP: 0018:ffffc900031dfaa0 EFLAGS: 00010246
RAX: c835c565ed492600 RBX: ffff888146de4010 RCX: ffff8880790fd940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900031dfbe0 R08: ffffffff901d211f R09: 1ffffffff203a423
R10: dffffc0000000000 R11: fffffbfff203a424 R12: 0000000000000000
R13: 1ffff9200063bf60 R14: ffffffff8a9c2520 R15: ffff888146b9b230
FS:  00007f81584876c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff7bb237ff8 CR3: 000000007b4da000 CR4: 00000000003506f0
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+0x281/0x850 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: 0033:0x7f81590f5fb9
Code: 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 d0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f81584870b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f8159234f80 RCX: 00007f81590f5fb9
RDX: 0000000000000000 RSI: 0000000040044620 RDI: 0000000000000003
RBP: 00007f815916bb38 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f8159234f80 R15: 00007ffe61ac36e8
 </TASK>