WARNING in vkms_get_vblank

Date	Name	Commit	Repro	Result
2024/10/14	upstream (ToT)	6485cf5ea253	C	[report] WARNING in vkms_get_vblank_timestamp

Date

Name

Commit

Repro

Result

2024/10/14

upstream (ToT)

6485cf5ea253

[report] WARNING in vkms_get_vblank_timestamp

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	WARNING in vkms_get_vblank_timestamp dri	syz	error		41	505d	565d	22/28	fixed on 2023/06/08 14:41
linux-6.1	WARNING in vkms_get_vblank_timestamp origin:upstream	C		error	2	38d	221d	0/3	upstream: reported C repro on 2024/03/14 22:37
upstream	WARNING in vkms_get_vblank_timestamp (2) dri	C	done		300	3d13h	497d	0/28	upstream: reported C repro on 2023/06/13 03:40

Created	Duration	User	Patch	Repo	Result
2024/10/20 07:27	17m	retest repro		linux-5.15.y	report log

Created

Duration

User

Patch

Repo

Result

2024/10/20 07:27

17m

retest repro

linux-5.15.y

report log

------------[ cut here ]------------ WARNING: CPU: 0 PID: 4048 at drivers/gpu/drm/vkms/vkms_crtc.c:103 vkms_get_vblank_timestamp+0x1a4/0x1d4 drivers/gpu/drm/vkms/vkms_crtc.c:103 Modules linked in: CPU: 0 PID: 4048 Comm: syz-executor350 Not tainted 5.15.167-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : vkms_get_vblank_timestamp+0x1a4/0x1d4 drivers/gpu/drm/vkms/vkms_crtc.c:103 lr : vkms_get_vblank_timestamp+0x1a4/0x1d4 drivers/gpu/drm/vkms/vkms_crtc.c:103 sp : ffff80001f9f6e90 x29: ffff80001f9f6e90 x28: ffff80001f9f6f50 x27: ffff0000cac94ee8 x26: ffff80001f9f6f40 x25: 1ffff00003f3edea x24: 0000000000000000 x23: ffff0000cac94000 x22: dfff800000000000 x21: 000000168b81d701 x20: 000000168b81d701 x19: ffff80001f9f6f50 x18: 0000000000000000 x17: 0000000000000000 x16: ffff80000830532c x15: 0000000000000008 x14: 1ffff0000295806a x13: dfff800000000000 x12: ffff700003f3ede4 x11: 0000000000000003 x10: 0000000000000000 x9 : ffff0000d91e0000 x8 : ffff80000b80caf4 x7 : ffff80000b71e5c0 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : ffff80001f9f6f50 x1 : 000000168b81d701 x0 : 000000168b81d701 Call trace: vkms_get_vblank_timestamp+0x1a4/0x1d4 drivers/gpu/drm/vkms/vkms_crtc.c:103 drm_get_last_vbltimestamp drivers/gpu/drm/drm_vblank.c:881 [inline] drm_update_vblank_count+0x23c/0xb10 drivers/gpu/drm/drm_vblank.c:303 drm_vblank_disable_and_save+0xc8/0x344 drivers/gpu/drm/drm_vblank.c:477 drm_crtc_vblank_off+0x254/0x7c4 drivers/gpu/drm/drm_vblank.c:1325 vkms_crtc_atomic_disable+0x20/0x30 drivers/gpu/drm/vkms/vkms_crtc.c:234 disable_outputs drivers/gpu/drm/drm_atomic_helper.c:1117 [inline] drm_atomic_helper_commit_modeset_disables+0xa10/0x1488 drivers/gpu/drm/drm_atomic_helper.c:1321 vkms_atomic_commit_tail+0x5c/0x20c drivers/gpu/drm/vkms/vkms_drv.c:71 commit_tail+0x274/0x3cc drivers/gpu/drm/drm_atomic_helper.c:1693 drm_atomic_helper_commit+0x5fc/0x644 drivers/gpu/drm/drm_atomic_helper.c:1912 drm_atomic_commit+0xd8/0xf8 drivers/gpu/drm/drm_atomic.c:1426 drm_client_modeset_commit_atomic+0x594/0x730 drivers/gpu/drm/drm_client_modeset.c:1055 drm_client_modeset_commit_locked+0xd0/0x4a8 drivers/gpu/drm/drm_client_modeset.c:1158 drm_client_modeset_commit+0x50/0x7c drivers/gpu/drm/drm_client_modeset.c:1184 __drm_fb_helper_restore_fbdev_mode_unlocked drivers/gpu/drm/drm_fb_helper.c:252 [inline] drm_fb_helper_restore_fbdev_mode_unlocked drivers/gpu/drm/drm_fb_helper.c:279 [inline] drm_fb_helper_lastclose drivers/gpu/drm/drm_fb_helper.c:2005 [inline] drm_fbdev_client_restore+0xe8/0x17c drivers/gpu/drm/drm_fb_helper.c:2408 drm_client_dev_restore+0x12c/0x248 drivers/gpu/drm/drm_client.c:226 drm_lastclose drivers/gpu/drm/drm_file.c:467 [inline] drm_release+0x4dc/0x654 drivers/gpu/drm/drm_file.c:498 __fput+0x1c4/0x800 fs/file_table.c:280 ____fput+0x20/0x30 fs/file_table.c:308 task_work_run+0x130/0x1e4 kernel/task_work.c:188 exit_task_work include/linux/task_work.h:33 [inline] do_exit+0x670/0x20bc kernel/exit.c:874 do_group_exit+0x110/0x268 kernel/exit.c:996 get_signal+0x634/0x1550 kernel/signal.c:2897 do_signal arch/arm64/kernel/signal.c:890 [inline] do_notify_resume+0x3d0/0x32b8 arch/arm64/kernel/signal.c:943 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 1078 hardirqs last enabled at (1077): [<ffff800011b98e34>] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (1077): [<ffff800011b98e34>] _raw_spin_unlock_irq+0x9c/0x134 kernel/locking/spinlock.c:202 hardirqs last disabled at (1078): [<ffff800011b98850>] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:126 [inline] hardirqs last disabled at (1078): [<ffff800011b98850>] _raw_spin_lock_irq+0x38/0x13c kernel/locking/spinlock.c:170 softirqs last enabled at (402): [<ffff8000080308b0>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (400): [<ffff80000803087c>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 76f20d82001b0d22 ]---

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2024/10/05 17:58	linux-5.15.y	3a5928702e71	d7906eff	.config	console log	report	syz / log	C		[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan-arm64	WARNING in vkms_get_vblank_timestamp

Crashes (1):

Assets (help?)