[syzbot] [media?] INFO: trying to register non-static key in __vb2_queue

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* [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel
@ 2026-07-15  3:16 syzbot
  2026-07-15  9:15 ` Forwarded: " syzbot
                   ` (9 more replies)
  0 siblings, 10 replies; 11+ messages in thread
From: syzbot @ 2026-07-15  3:16 UTC (permalink / raw)
  To: linux-kernel, linux-media, m.szyprowski, mchehab, syzkaller-bugs, tfiga

Hello,

syzbot found the following issue on:

HEAD commit:    cc2b5f627e8c Add linux-next specific files for 20260714
git tree:       linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=17fb04b9580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=2290ccbf984c524f
dashboard link: https://syzkaller.appspot.com/bug?extid=2302c5dc59995fbb8089
compiler:       Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12d598b9580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=14500789580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/6836f8efb1da/disk-cc2b5f62.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/0109d3477cc7/vmlinux-cc2b5f62.xz
kernel image: https://storage.googleapis.com/syzbot-assets/c2e49e350bbf/bzImage-cc2b5f62.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+2302c5dc59995fbb8089@syzkaller.appspotmail.com

em28xx 1-1:0.132: AC97 chip type couldn't be determined
em28xx 1-1:0.132: No AC97 audio processor
usb 1-1: Decoder not found
em28xx 1-1:0.132: failed to create media graph
em28xx 1-1:0.132: V4L2 device video103 deregistered
INFO: trying to register non-static key.
The code is fine but needs lockdep annotation, or maybe
you didn't initialize this object before use?
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 5649 Comm: kworker/1:3 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/25/2026
Workqueue: events request_module_async
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 assign_lock_key+0x133/0x150 kernel/locking/lockdep.c:1000
 register_lock_class+0xcc/0x2e0 kernel/locking/lockdep.c:1315
 __lock_acquire+0xaf/0x2e40 kernel/locking/lockdep.c:5128
 lock_acquire+0x115/0x350 kernel/locking/lockdep.c:5906
 rt_spin_lock+0x83/0x400 kernel/locking/spinlock_rt.c:56
 spin_lock include/linux/spinlock_rt.h:45 [inline]
 __wake_up_common_lock+0x2f/0x1f0 kernel/sched/wait.c:124
 __vb2_queue_cancel+0x2de/0xdc0 drivers/media/common/videobuf2/videobuf2-core.c:2244
 vb2_core_queue_release+0x2f/0x150 drivers/media/common/videobuf2/videobuf2-core.c:2677
 vb2_queue_release drivers/media/common/videobuf2/videobuf2-v4l2.c:956 [inline]
 vb2_video_unregister_device+0x15b/0x200 drivers/media/common/videobuf2/videobuf2-v4l2.c:1292
 em28xx_v4l2_init+0x1c60/0x3140 drivers/media/usb/em28xx/em28xx-video.c:3097
 em28xx_init_extension+0x120/0x1d0 drivers/media/usb/em28xx/em28xx-core.c:1248
 process_one_work+0xaaf/0x1480 kernel/workqueue.c:3379
 process_scheduled_works kernel/workqueue.c:3462 [inline]
 worker_thread+0xb05/0x10d0 kernel/workqueue.c:3543
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 UID: 0 PID: 5649 Comm: kworker/1:3 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/25/2026
Workqueue: events request_module_async
RIP: 0010:__wake_up_common kernel/sched/wait.c:104 [inline]
RIP: 0010:__wake_up_common_lock+0xd6/0x1f0 kernel/sched/wait.c:125
Code: 0f 84 d4 00 00 00 44 8b 7c 24 04 eb 13 48 ba 00 00 00 00 00 fc ff df 4c 39 ed 0f 84 ba 00 00 00 49 89 ee 48 89 e8 48 c1 e8 03 <80> 3c 10 00 74 12 4c 89 f7 e8 1c ce 93 00 48 ba 00 00 00 00 00 fc
RSP: 0018:ffffc9000595f908 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff8bcbd060 RDI: 00000000ffffffff
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1fa1890 R12: ffff88803e181b14
R13: ffff88803e181c28 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888125af2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005625301fb660 CR3: 000000003774e000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __vb2_queue_cancel+0x2de/0xdc0 drivers/media/common/videobuf2/videobuf2-core.c:2244
 vb2_core_queue_release+0x2f/0x150 drivers/media/common/videobuf2/videobuf2-core.c:2677
 vb2_queue_release drivers/media/common/videobuf2/videobuf2-v4l2.c:956 [inline]
 vb2_video_unregister_device+0x15b/0x200 drivers/media/common/videobuf2/videobuf2-v4l2.c:1292
 em28xx_v4l2_init+0x1c60/0x3140 drivers/media/usb/em28xx/em28xx-video.c:3097
 em28xx_init_extension+0x120/0x1d0 drivers/media/usb/em28xx/em28xx-core.c:1248
 process_one_work+0xaaf/0x1480 kernel/workqueue.c:3379
 process_scheduled_works kernel/workqueue.c:3462 [inline]
 worker_thread+0xb05/0x10d0 kernel/workqueue.c:3543
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__wake_up_common kernel/sched/wait.c:104 [inline]
RIP: 0010:__wake_up_common_lock+0xd6/0x1f0 kernel/sched/wait.c:125
Code: 0f 84 d4 00 00 00 44 8b 7c 24 04 eb 13 48 ba 00 00 00 00 00 fc ff df 4c 39 ed 0f 84 ba 00 00 00 49 89 ee 48 89 e8 48 c1 e8 03 <80> 3c 10 00 74 12 4c 89 f7 e8 1c ce 93 00 48 ba 00 00 00 00 00 fc
RSP: 0018:ffffc9000595f908 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff8bcbd060 RDI: 00000000ffffffff
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1fa1890 R12: ffff88803e181b14
R13: ffff88803e181c28 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888125af2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005625301fb660 CR3: 000000003774e000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	0f 84 d4 00 00 00    	je     0xda
   6:	44 8b 7c 24 04       	mov    0x4(%rsp),%r15d
   b:	eb 13                	jmp    0x20
   d:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
  14:	fc ff df
  17:	4c 39 ed             	cmp    %r13,%rbp
  1a:	0f 84 ba 00 00 00    	je     0xda
  20:	49 89 ee             	mov    %rbp,%r14
  23:	48 89 e8             	mov    %rbp,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	80 3c 10 00          	cmpb   $0x0,(%rax,%rdx,1) <-- trapping instruction
  2e:	74 12                	je     0x42
  30:	4c 89 f7             	mov    %r14,%rdi
  33:	e8 1c ce 93 00       	call   0x93ce54
  38:	48                   	rex.W
  39:	ba 00 00 00 00       	mov    $0x0,%edx
  3e:	00 fc                	add    %bh,%ah


---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@googlegroups.com.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.

If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title

If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.

If you want to overwrite report's subsystems, reply with:
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If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report

If you want to undo deduplication, reply with:
#syz undup

^ permalink raw reply	[flat|nested] 11+ messages in thread

* Forwarded: Re: [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel
  2026-07-15  3:16 [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel syzbot
@ 2026-07-15  9:15 ` syzbot
  2026-07-15 12:17 ` syzbot
                   ` (8 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: syzbot @ 2026-07-15  9:15 UTC (permalink / raw)
  To: linux-kernel

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***

Subject: Re: [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel
Author: gautambhadori9@gmail.com

#syz test:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
cc2b5f627e8ccbae1188ef2d8be3e451d7f933a5

^ permalink raw reply	[flat|nested] 11+ messages in thread

* Forwarded: Re: [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel
  2026-07-15  3:16 [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel syzbot
  2026-07-15  9:15 ` Forwarded: " syzbot
@ 2026-07-15 12:17 ` syzbot
  2026-07-15 14:15 ` syzbot
                   ` (7 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: syzbot @ 2026-07-15 12:17 UTC (permalink / raw)
  To: linux-kernel

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Subject: Re: [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel
Author: gautambhadori9@gmail.com

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
cc2b5f627e8ccbae1188ef2d8be3e451d7f933a5

^ permalink raw reply	[flat|nested] 11+ messages in thread

* Forwarded: Re: [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel
  2026-07-15  3:16 [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel syzbot
  2026-07-15  9:15 ` Forwarded: " syzbot
  2026-07-15 12:17 ` syzbot
@ 2026-07-15 14:15 ` syzbot
  2026-07-15 15:36 ` syzbot
                   ` (6 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: syzbot @ 2026-07-15 14:15 UTC (permalink / raw)
  To: linux-kernel

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Subject: Re: [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel
Author: gautambhadori9@gmail.com

#syz test

^ permalink raw reply	[flat|nested] 11+ messages in thread

* Forwarded: Re: [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel
  2026-07-15  3:16 [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel syzbot
                   ` (2 preceding siblings ...)
  2026-07-15 14:15 ` syzbot
@ 2026-07-15 15:36 ` syzbot
  2026-07-16  4:35 ` syzbot
                   ` (5 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: syzbot @ 2026-07-15 15:36 UTC (permalink / raw)
  To: linux-kernel

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Subject: Re: [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel
Author: gautambhadori9@gmail.com

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
cc2b5f627e8ccbae1188ef2d8be3e451d7f933a5

^ permalink raw reply	[flat|nested] 11+ messages in thread

* Forwarded: Re: [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel
  2026-07-15  3:16 [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel syzbot
                   ` (3 preceding siblings ...)
  2026-07-15 15:36 ` syzbot
@ 2026-07-16  4:35 ` syzbot
  2026-07-16 11:24 ` syzbot
                   ` (4 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: syzbot @ 2026-07-16  4:35 UTC (permalink / raw)
  To: linux-kernel

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Subject: Re: [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel
Author: gautambhadori9@gmail.com

#syz test

^ permalink raw reply	[flat|nested] 11+ messages in thread

* Forwarded: Re: [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel
  2026-07-15  3:16 [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel syzbot
                   ` (4 preceding siblings ...)
  2026-07-16  4:35 ` syzbot
@ 2026-07-16 11:24 ` syzbot
  2026-07-17  6:50 ` syzbot
                   ` (3 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: syzbot @ 2026-07-16 11:24 UTC (permalink / raw)
  To: linux-kernel

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Subject: Re: [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel
Author: gautambhadori9@gmail.com

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
cc2b5f627e8ccbae1188ef2d8be3e451d7f933a5
diff --git a/drivers/media/usb/em28xx/em28xx-video.c
b/drivers/media/usb/em28xx/em28xx-video.c
index c418add65b..d93f1b5049 100644
--- a/drivers/media/usb/em28xx/em28xx-video.c
+++ b/drivers/media/usb/em28xx/em28xx-video.c
@@ -1410,6 +1410,9 @@ static int em28xx_vb2_setup(struct em28xx *dev)
  if (rc < 0)
  return rc;

+ if (!em28xx_vbi_supported(dev))
+ return 0;
+
  /* Setup Videobuf2 for VBI capture */
  q = &v4l2->vb_vbiq;
  q->type = V4L2_BUF_TYPE_VBI_CAPTURE;
@@ -2416,7 +2419,7 @@ static int em28xx_v4l2_fini(struct em28xx *dev)
  if (video_is_registered(&v4l2->radio_dev)) {
  dev_info(&dev->intf->dev, "V4L2 device %s deregistered\n",
  video_device_node_name(&v4l2->radio_dev));
- vb2_video_unregister_device(&v4l2->radio_dev);
+ video_unregister_device(&v4l2->radio_dev);
  }
  if (video_is_registered(&v4l2->vbi_dev)) {
  dev_info(&dev->intf->dev, "V4L2 device %s deregistered\n",
@@ -2954,6 +2957,7 @@ static int em28xx_v4l2_init(struct em28xx *dev)
  mutex_init(&v4l2->vb_vbi_queue_lock);
  v4l2->vdev.queue = &v4l2->vb_vidq;
  v4l2->vdev.queue->lock = &v4l2->vb_queue_lock;
+ v4l2->vb_vbiq.lock = &v4l2->vb_vbi_queue_lock;
  v4l2->vdev.device_caps = V4L2_CAP_READWRITE | V4L2_CAP_VIDEO_CAPTURE |
  V4L2_CAP_STREAMING;
  if (dev->int_audio_type != EM28XX_INT_AUDIO_NONE)
@@ -2983,6 +2987,11 @@ static int em28xx_v4l2_init(struct em28xx *dev)
  if (dev->chip_id == CHIP_ID_EM2828X || dev->board.decoder == EM28XX_BUILTIN)
  v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_ENUM_FRAMESIZES);

+ /* Initialize the queues before registering devices that reference them. */
+ ret = em28xx_vb2_setup(dev);
+ if (ret)
+ goto unregister_dev;
+
  /* register v4l2 video video_device */
  ret = video_register_device(&v4l2->vdev, VFL_TYPE_VIDEO,
      video_nr[dev->devno]);
@@ -3068,9 +3077,6 @@ static int em28xx_v4l2_init(struct em28xx *dev)
  /* Save some power by putting tuner to sleep */
  v4l2_device_call_all(&v4l2->v4l2_dev, 0, tuner, standby);

- /* initialize videobuf2 stuff */
- em28xx_vb2_setup(dev);
-
  dev_info(&dev->intf->dev,
  "V4L2 extension successfully initialized\n");

@@ -3082,7 +3088,7 @@ static int em28xx_v4l2_init(struct em28xx *dev)
  dev_info(&dev->intf->dev,
  "V4L2 device %s deregistered\n",
  video_device_node_name(&v4l2->radio_dev));
- vb2_video_unregister_device(&v4l2->radio_dev);
+ video_unregister_device(&v4l2->radio_dev);
  }
  if (video_is_registered(&v4l2->vbi_dev)) {
  dev_info(&dev->intf->dev,

^ permalink raw reply	[flat|nested] 11+ messages in thread

* Forwarded: Re: [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel
  2026-07-15  3:16 [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel syzbot
                   ` (5 preceding siblings ...)
  2026-07-16 11:24 ` syzbot
@ 2026-07-17  6:50 ` syzbot
  2026-07-18 13:47 ` Forwarded: [PATCH] drm/vkms: Advertise PREMULTI blend mode syzbot
                   ` (2 subsequent siblings)
  9 siblings, 0 replies; 11+ messages in thread
From: syzbot @ 2026-07-17  6:50 UTC (permalink / raw)
  To: linux-kernel

For archival purposes, forwarding an incoming command email to
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***

Subject: Re: [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel
Author: hokage.newbie@gmail.com

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
cc2b5f627e8ccbae1188ef2d8be3e451d7f933a5

^ permalink raw reply	[flat|nested] 11+ messages in thread

* Forwarded: [PATCH] drm/vkms: Advertise PREMULTI blend mode
  2026-07-15  3:16 [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel syzbot
                   ` (6 preceding siblings ...)
  2026-07-17  6:50 ` syzbot
@ 2026-07-18 13:47 ` syzbot
  2026-07-31 12:29 ` Forwarded: Re: [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel syzbot
  2026-11-08 18:16 ` [syzbot] [usb?] " syzbot
  9 siblings, 0 replies; 11+ messages in thread
From: syzbot @ 2026-07-18 13:47 UTC (permalink / raw)
  To: linux-kernel

For archival purposes, forwarding an incoming command email to
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***

Subject: [PATCH] drm/vkms: Advertise PREMULTI blend mode
Author: michail.tatas@gmail.com

#syz test

Since we only support pre-multiplied alpha blend mode,
advertise that.

Signed-off-by: Michail Tatas <michail.tatas@gmail.com>
---
 drivers/gpu/drm/vkms/vkms_plane.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c
index 68cb2a3335e6..8c67511d6e8c 100644
--- a/drivers/gpu/drm/vkms/vkms_plane.c
+++ b/drivers/gpu/drm/vkms/vkms_plane.c
@@ -246,6 +246,13 @@ struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev,
 					  DRM_COLOR_YCBCR_BT601,
 					  DRM_COLOR_YCBCR_FULL_RANGE);
 
+	/*
+	 * Since our composer only supports pre-multiplied alpha,
+	 * advertise only the PREMULTI blend mode.
+	 */
+	drm_plane_create_blend_mode_property(&plane->base,
+					     BIT(DRM_MODE_BLEND_PREMULTI));
+
 	if (vkms_config_plane_get_default_pipeline(plane_cfg))
 		vkms_initialize_colorops(&plane->base);
 
-- 
2.43.0


^ permalink raw reply	[flat|nested] 11+ messages in thread

* Forwarded: Re: [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel
  2026-07-15  3:16 [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel syzbot
                   ` (7 preceding siblings ...)
  2026-07-18 13:47 ` Forwarded: [PATCH] drm/vkms: Advertise PREMULTI blend mode syzbot
@ 2026-07-31 12:29 ` syzbot
  2026-11-08 18:16 ` [syzbot] [usb?] " syzbot
  9 siblings, 0 replies; 11+ messages in thread
From: syzbot @ 2026-07-31 12:29 UTC (permalink / raw)
  To: linux-kernel, syzkaller-bugs

For archival purposes, forwarding an incoming command email to
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***

Subject: Re: [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel
Author: gautambhadori9@gmail.com

#syz test

On Wed, Jul 15, 2026 at 8:45 PM Gautam Bhadoria
<gautambhadori9@gmail.com> wrote:
>
> it was an empty test without any patch so why is still giving me
> " syzbot has tested the proposed patch but the reproducer is still triggering an issue:
> lost connection to test machine  "
>
> On Wed, Jul 15, 2026 at 8:23 PM syzbot <syzbot+2302c5dc59995fbb8089@syzkaller.appspotmail.com> wrote:
>>
>> Hello,
>>
>> syzbot has tested the proposed patch but the reproducer is still triggering an issue:
>> lost connection to test machine
>>
>>
>>
>> Tested on:
>>
>> commit:         cc2b5f62 Add linux-next specific files for 20260714
>> git tree:       linux-next
>> console output: https://syzkaller.appspot.com/x/log.txt?x=10b844b9580000
>> kernel config:  https://syzkaller.appspot.com/x/.config?x=2290ccbf984c524f
>> dashboard link: https://syzkaller.appspot.com/bug?extid=2302c5dc59995fbb8089
>> compiler:       Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
>>
>> Note: no patches were applied.

^ permalink raw reply	[flat|nested] 11+ messages in thread

* Re: [syzbot] [usb?] [media?] INFO: trying to register non-static key in __vb2_queue_cancel
  2026-07-15  3:16 [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel syzbot
                   ` (8 preceding siblings ...)
  2026-07-31 12:29 ` Forwarded: Re: [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel syzbot
@ 2026-11-08 18:16 ` syzbot
  9 siblings, 0 replies; 11+ messages in thread
From: syzbot @ 2026-11-08 18:16 UTC (permalink / raw)
  To: gautambhadori9, hokage.newbie, hverkuil+cisco, linux-kernel,
	linux-media, linux-usb, m.szyprowski, mchehab+huawei, mchehab,
	michail.tatas, pimyn, syzkaller-bugs, tfiga

syzbot has bisected this issue to:

commit 288254383674be25b26cf137bc12bfe38fefbad6
Author: Hans Verkuil <hverkuil+cisco@kernel.org>
Date:   Tue May 19 10:07:59 2026 +0000

    media: em28xx: use v4l2_device release callback

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=11227f8d580000
start commit:   f909e534f5e3 Merge tag 'scsi-fixes' of git://git.kernel.or..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=13227f8d580000
console output: https://syzkaller.appspot.com/x/log.txt?x=15227f8d580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=b38d39c45202f4fa
dashboard link: https://syzkaller.appspot.com/bug?extid=2302c5dc59995fbb8089
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=170e74e1580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15c43da9580000

Reported-by: syzbot+2302c5dc59995fbb8089@syzkaller.appspotmail.com
Fixes: 288254383674 ("media: em28xx: use v4l2_device release callback")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection

^ permalink raw reply	[flat|nested] 11+ messages in thread

end of thread, other threads:[~2026-11-08 18:16 UTC | newest]

Thread overview: 11+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2026-07-15  3:16 [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel syzbot
2026-07-15  9:15 ` Forwarded: " syzbot
2026-07-15 12:17 ` syzbot
2026-07-15 14:15 ` syzbot
2026-07-15 15:36 ` syzbot
2026-07-16  4:35 ` syzbot
2026-07-16 11:24 ` syzbot
2026-07-17  6:50 ` syzbot
2026-07-18 13:47 ` Forwarded: [PATCH] drm/vkms: Advertise PREMULTI blend mode syzbot
2026-07-31 12:29 ` Forwarded: Re: [syzbot] [media?] INFO: trying to register non-static key in __vb2_queue_cancel syzbot
2026-11-08 18:16 ` [syzbot] [usb?] " syzbot

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