------------[ cut here ]------------ WARNING: CPU: 1 PID: 25251 at drivers/gpu/drm/vkms/vkms_crtc.c:100 vkms_get_vblank_timestamp+0x183/0x1b0 drivers/gpu/drm/vkms/vkms_crtc.c:100 Modules linked in: CPU: 1 PID: 25251 Comm: syz-executor.1 Not tainted 6.9.0-next-20240517-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:vkms_get_vblank_timestamp+0x183/0x1b0 drivers/gpu/drm/vkms/vkms_crtc.c:100 Code: 42 80 3c 30 00 74 08 48 89 ef e8 68 b2 16 fc 48 89 5d 00 b0 01 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 3e cd b0 fb 90 <0f> 0b 90 eb e4 89 d9 80 e1 07 38 c1 0f 8c cd fe ff ff 48 89 df e8 RSP: 0018:ffffc9000bc977c8 EFLAGS: 00010293 RAX: ffffffff85e59922 RBX: 000000e1e67ea9f1 RCX: ffff88801fbd3c00 RDX: 0000000000000000 RSI: 000000e1e67ea9f1 RDI: 000000e1e67ea9f1 RBP: ffffc9000bc97960 R08: ffffffff85e5988f R09: 0000000000000000 R10: ffffc90004012000 R11: ffffffff85e597a0 R12: 000000e1e67ea9f1 R13: ffff8880183ae150 R14: 1ffff92001792f2c R15: ffff88801fd08000 FS: 0000555569b19480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffc1519098 CR3: 0000000079532000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: drm_crtc_get_last_vbltimestamp drivers/gpu/drm/drm_vblank.c:880 [inline] drm_crtc_next_vblank_start+0x22d/0x480 drivers/gpu/drm/drm_vblank.c:1014 set_fence_deadline drivers/gpu/drm/drm_atomic_helper.c:1558 [inline] drm_atomic_helper_wait_for_fences+0x277/0x8d0 drivers/gpu/drm/drm_atomic_helper.c:1605 drm_atomic_helper_commit+0x53a/0x9f0 drivers/gpu/drm/drm_atomic_helper.c:2034 drm_atomic_commit+0x2ac/0x310 drivers/gpu/drm/drm_atomic.c:1514 drm_client_modeset_commit_atomic+0x676/0x7e0 drivers/gpu/drm/drm_client_modeset.c:1063 drm_client_modeset_commit_locked+0xe0/0x520 drivers/gpu/drm/drm_client_modeset.c:1166 drm_client_modeset_commit+0x4a/0x70 drivers/gpu/drm/drm_client_modeset.c:1192 __drm_fb_helper_restore_fbdev_mode_unlocked drivers/gpu/drm/drm_fb_helper.c:251 [inline] drm_fb_helper_restore_fbdev_mode_unlocked drivers/gpu/drm/drm_fb_helper.c:278 [inline] drm_fb_helper_lastclose+0xbb/0x180 drivers/gpu/drm/drm_fb_helper.c:2005 drm_fbdev_generic_client_restore+0x34/0x40 drivers/gpu/drm/drm_fbdev_generic.c:257 drm_client_dev_restore+0x132/0x270 drivers/gpu/drm/drm_client.c:260 drm_lastclose drivers/gpu/drm/drm_file.c:406 [inline] drm_release+0x47c/0x560 drivers/gpu/drm/drm_file.c:437 __fput+0x406/0x8b0 fs/file_table.c:422 __do_sys_close fs/open.c:1555 [inline] __se_sys_close fs/open.c:1540 [inline] __x64_sys_close+0x7f/0x110 fs/open.c:1540 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6456a7bdda Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 03 7f 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 63 7f 02 00 8b 44 24 RSP: 002b:00007ffff2f7c830 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f6456a7bdda RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007ffff2f7c908 R08: 00007f6456a00000 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000293 R12: 00000000000ece29 R13: 00007f6456babf8c R14: 00007f6456babf80 R15: 0000000000000032