Nvidia Kernel Channel

Josh Bialkowski 2018-01-08 00:00 Comments

Background

Relatively rarely but often enough to be a problem we see a kernel NULL pointer dereference or failed paging request. The error occurs in one of three locations (see failure points below). The problem seems to only occur on some exceptional condition (i.e. syncpt timeout). If the stream is completely nominal then we do not see this issue.

Hypothesis

The nvidia v4l2 camera driver contains a race condition in tegra/camera/channel.c. The struct tegra_channel contains a four-element ring buffer of struct vb2_buffer objects. The driver utilizes two kernel threads: the capture thread starts a frame capture, and the release thread concludes a frame capture. Nominally they operate on a shared ring buffer. One thread writes elements into the buffer, and the other thread reads elements out of the buffer. However both threads have some error condition where they reset the buffer, and I believe that this unsynchronized reset is the problem. My hypothesis is that one thread resets the buffer while another thread is in the process of reading/writing to it.

In particular it appears that the purpose of this buffer is to indicate "this is the set of frames to discard if we need to reset". It includes the set of frames that are in release as well as potentially one frame that is on it's way to begin capture.

Solution

The requirement satisfied by the buffer solution is the following: If an error is returned at either the soc_camera_capture_frame() or soc_camera_release_frame() calls, then the VI will be reset and so it doesn't make sense to keep processing frames. Some specific examples:

If there is a syncpt timeout error in the release thread while waiting for the frame to finish then we want the capture thread to reset, and any frames currently in flight we want to be released immediately without passing them to the VI.
If there is a frame start error in the capture thread, then will reset the VI so we want to flush any frames that are "in flight" without waiting for the VI to finish filling them.

One way of solving this is to keep track of an atomic reset_version integer. When the capture thread restarts the stream, it increments this count. Each time it starts capture on a buffer it stamps the buffer with the current reset_version. Ever time the release thread starts to wait on a frame, it verifies that the reset_version of the buffer matches the current reset_version. If it is different, it flushes the buffer without waiting for it to finish receiving (because it was queued before the VI was reset). Every time the capture thread preps a buffer for capture it checks to see if the reset_version has changed. If it has, then it will reset the VI first.

Failure points

There are two kernel threads. One to capture data to buffer, and a second to release the buffer. Presumably they do their work at start of frame and at end of frame.

The entry points for the two threads are

tegra_channel_kthread_capture_start():
tegra_channel_kthread_release():

However note that some of the functions executed here might actually be executed in a third thread. For instance (stack 1) to indicate it's actually the userspace thread calling into an ioctl that is leading to the call.

The crash seems to generally occur in one of these three places. My hypothesis is that there is race condition, due to the fact that we see the error consistently on a failed stream closure.

stack 1:

[ 1400.657205] [<ffffffc000750044>] tegra_channel_queued_buf_done+0x64/0x160
[ 1400.665275] [<ffffffc000750354>] tegra_channel_stop_streaming+0x54/0xc8
[ 1400.673150] [<ffffffc00073d5b0>] __vb2_queue_cancel+0x30/0xa8
[ 1400.680135] [<ffffffc00073d834>] vb2_streamoff+0xac/0x124
[ 1400.686744] [<ffffffc00073f014>] vb2_ioctl_streamoff+0x44/0x50
[ 1400.693768] [<ffffffc000729ba0>] v4l_streamoff+0x1c/0x24
[ 1400.700246] [<ffffffc00072dd90>] __video_do_ioctl+0x174/0x284
[ 1400.707136] [<ffffffc00072dafc>] video_usercopy+0x1e4/0x2e8
[ 1400.713831] [<ffffffc00072dc14>] video_ioctl2+0x14/0x1c
[ 1400.720155] [<ffffffc000728990>] v4l2_ioctl+0x70/0x134
[ 1400.726365] [<ffffffc0001be4c4>] vfs_ioctl+0x1c/0x44
[ 1400.732373] [<ffffffc0001bf194>] do_vfs_ioctl+0x220/0x22c
[ 1400.738795] [<ffffffc0001bf274>] SyS_ioctl+0xd4/0x17c

stack 2:

May  5 10:01:37 spitmule3 kernel: [ 7675.570947] [<ffffffc00074fb7c>] dequeue_buffer+0x3c/0x7c
May  5 10:01:37 spitmule3 kernel: [ 7675.576347] [<ffffffc000750ed8>] tegra_channel_kthread_capture_start+0x154/0x1c4
May  5 10:01:37 spitmule3 kernel: [ 7675.583741] [<ffffffc0000d04b8>] kthread+0xc0/0xc8

stack 3:

May  4 09:42:21 deadfire3 kernel: [ 6656.704312] [<ffffffc00074fd94>] free_ring_buffers+0x3c/0xd0
May  4 09:42:21 deadfire3 kernel: [ 6656.709971] [<ffffffc00074ffe8>] tegra_channel_release_frame+0xa0/0xac
May  4 09:42:21 deadfire3 kernel: [ 6656.716495] [<ffffffc00075055c>] tegra_channel_kthread_release+0x178/0x1a4
May  4 09:42:21 deadfire3 kernel: [ 6656.723366] [<ffffffc0000d04b8>] kthread+0xc0/0xc8

Program flow

Life of a buffer

tegra_channel_buffer_queue(): inserts a buffer into capture
- buf_queue member of vb2_ops, I believe this is called throught he v4l2 ioctl to enqueue a buffer.
dequeue_buffer(): removes a buffer from capture and adds it to buffer
tegra_channel_ring_buffer(): nominally adds a buffer release, but may also call free_ring_buffers()
tegra_channel_kthread_release: removes a frame from release
free_ring_buffers(): removes a buffer from buffer and marks it as done, I believe returning it to v4l2 and allowing it to be retreived with the v4l2 ioctl to dequeue a buffer.

Capture thread

The capture thread loop is basically:

dequeue_buf(): Retrieve a buffer that is ready to be filled
tegra_channel_capture_frame(chan, buf): Start filling the buffer with frame data.

Release thread

The release thread is basically

list_del_init(&buf->queue): remove the buffer from the chan->release list
tegra_channel_release_frame(chan, buf): release the frame to userspace

Frame Buffers

The vb2 buffer objects are stored in the buffers field of the struct tegra_channel. This is a fixed size array of four elements. It is used as a ring buffer through the indices save_index and free_index:

``save_index``: The "write" head of the ring buffer. If we need to add an element to the ring this is where we add it, and the increment (with wrap-around).
``free_index``: THe "read" head of the ring buffer. If we want to remove an element of the ring this where we remove from, and increment (with wrap-around).

Possible races

``free_ring_buffers()``, called by:

capture thread:
- stack 1 (CAPTURE_ERROR)
  - free_ring_buffers()
  - tegra_channel_ring_buffer()
  - tegra_channel_capture_frame()
  - tegra_channel_kthread_capture_start()
- stack 2 (capture state unspecified)
  - free_ring_buffers()
  - tegra_channel_ring_buffer()
  - tegra_channel_capture_frame()
  - tegra_channel_kthread_capture_start()
release thread
- stack 1 (CAPTURE_SUCCESS):
  - free_ring_buffers()
  - tegra_channel_release_frame()
- stack 2 (CAPTURE_TIMEOUT):
  - free_ring_buffers()
  - tegra_channel_ring_buffer()
  - tegra_channel_release_frame()
v4l userspace thread:
- stack 1 (CAPTURE_GOOD)
  - free_ring_buffers()
  - tegra_channel_ring_buffer()
  - tegra_channel_capture_done()
  - tegra_channel_stop_streaming()
- stack 2 (always)
  - free_ring_buffers()
  - tegra_channel_stop_streaming()

``add_buffer_to_ring()``, called by:

stack 1
- add_buffer_to_ring()
- dequeue_buffer()
- tegra_channel_capture_done()
- tegra_channel_stop_streaming()
stack 2
- add_buffer_to_ring()
- dequeue_buffer()
- tegra_channel_kthread_capture_start()

Some relevant notes:

tegra_channel_stop_streaming() calls tegra_channel_stop_kthreads() before it calls free_ring_buffers() and tegra_channel_stop_threads() does wait on a completion indicating the thread has exited before it continues.
that tegra_channel_ring_buffer is called by both tegra_channel_capture_frame() and tegra_channel_release_frame() so there is a second path to free_ring_buffers() from the release thread.
tegra_channel_ring_buffer() takes a int state argument, which is not used. I suspect the intent was to communicate the capture state, but this is stored instead in chan->capture_state (where chan is a struct tegra_channel).
Unable to handle kernel paging request at virual address... is likely an indicator of a corrupt stack. Perhaps a buffer overflow. The dead address prefix likely indicates that the pointer was cleared out or invalidated somehow (i.e. free()ed?
Several functions will set chan->capture_state to something other than CAPTURE_GOOD but there are no functions in channel.c that set it to CAPTURE_GOOD. This is done instead in vi2_channel_capture_frame() defined in vi2_fops.c. This function is assigned as the soc_channel_capture_frame member of the chan->fops vtable which is called at the end of tegra_channel_enable_stream().
If free_ring_buffers() is called from tegra_channel_ring_buffer() or tegra_channel_stop_streaming() then the number of buffers to free is chan->num_buffers. If called from tegra_channel_release_frame() then the number of buffers to free is one.

Some notes on kernel code

Freezing of tasks

From here

This is how user space processes and some kernel threads are controlled during hybernation or system-wide susped.

All freezable tasks must react to that by calling try_to_freeze(), which results in a call to __refrigerator() (defined in kernel/freezer.c), which sets the task's PF_FROZEN flag, changes its state to TASK_UNINTERRUPTIBLE and makes it loop until PF_FROZEN is cleared for it.

Sleeping

From here

The preferred alternative is wait_event_interruptible, which can be interrupted by signals. This version returns an integer value that you should check; a nonzero value means your sleep was interrupted by some sort of signal, and your driver should probably return -ERESTARTSYS.

In particular tegra_channel_kthread_capture_start sleeps until the following condition is true:

!list_empty(&chan->capture) || kthread_should_stop()

Which I interpret to mean, in english "Sleep until there is a buffer available to fill we are supposed to die."

Completion

From here

Completions are a code synchronization mechanism which is preferable to any misuse of locks. Any time you think of using yield() or some quirky msleep(1) loop to allow something else to proceed, you probably want to look into using one of the wait_for_completion*() calls instead. The advantage of using completions is clear intent of the code, but also more efficient code as both threads can continue until the result is actually needed.

Spin Locks

From here

Spinlocks are simple in concept. A spinlock is a mutual exclusion device that can have only two values: "locked" and "unlocked." It is usually implemented as a single bit in an integer value. Code wishing to take out a particular lock tests the relevant bit. If the lock is available, the "locked" bit is set and the code continues into the critical section. If, instead, the lock has been taken by somebody else, the code goes into a tight loop where it repeatedly checks the lock until it becomes available. This loop is the "spin" part of a spinlock.

List Operations

list_for_each_entry_safe doesn't really indicate whether or not the list may be empty. I think the answer is no (otherwise, it's not a well formed list). In particular, note that tegra_channel_kthread_release() and dequeue_buffer() both check !list_empty(...) instead of just iterating under the assumption that it is non-empty. list_entry get the struct for this entry

Channel State

The following is defined in mc_common.h. Comments have been moved from the header to the field for readability.

struct tegra_channel
{
  // list entry in a composite device dmas list
  struct list_head list;

  // V4L2 video device associated with the video channel
  struct video_device video;

  // media pad for the video device entity
  struct media_pad pad;

  // pipeline belonging to the channel
  struct media_pipeline pipe;
  struct mutex video_lock;

  // composite device DT node port number for the channel
  struct tegra_mc_vi *vi;
  struct v4l2_subdev *subdev[MAX_SUBDEVICES];
  struct v4l2_subdev *subdev_on_csi;

  struct v4l2_ctrl_handler ctrl_handler;
  struct v4l2_pix_format format;
  const struct tegra_video_format *fmtinfo;
  struct mutex stop_kthread_lock;

  unsigned char port[TEGRA_CSI_BLOCKS];
  unsigned int syncpt[2][TEGRA_CSI_BLOCKS];
  unsigned int syncpoint_fifo[2][TEGRA_CSI_BLOCKS];
  unsigned int buffer_offset[TEGRA_CSI_BLOCKS];
  unsigned int buffer_state[QUEUED_BUFFERS];
  struct vb2_buffer *buffers[QUEUED_BUFFERS];
  unsigned int timeout;

  // Next buffer slot available for insertion of a new
  // buffer. Incremented by add_buffer_to_ring()
  unsigned int save_index;

  // Next buffer slot containing a buffer ready go be
  // removed. Incremented by free_ring_buffers()
  unsigned int free_index;
  unsigned int num_buffers;
  unsigned int released_bufs;

  // kernel thread task structure for the capture thread
  struct task_struct *kthread_capture_start;

  // kernel thread task structure for the release thread
  struct task_struct *kthread_release;

  // wait queue for capture thread
  wait_queue_head_t start_wait;

  // wait queue for release thread
  wait_queue_head_t release_wait;

  // vb2 buffer queue
  struct vb2_queue queue;

  // allocation context for the vb2 queue
  void *alloc_ctx;

  // list of queued buffers for capture
  struct list_head capture;

  // list of queued buffers for release
  struct list_head release;

  spinlock_t start_lock;
  spinlock_t release_lock;
  struct completion capture_comp;
  struct completion release_comp;

  // csi register bases
  void __iomem *csibase[TEGRA_CSI_BLOCKS];

  // channel buffer stride alignment, default is 64
  unsigned int stride_align;

  // image width alignment, default is 4
  unsigned int width_align;
  unsigned int valid_ports;
  unsigned int total_ports;
  unsigned int numlanes;

  // Tegra IO rail ID of this video channel
  unsigned int io_id;
  unsigned int num_subdevs;

  // v4l2 buffers sequence number
  unsigned int sequence;
  unsigned int saved_ctx_bypass;
  unsigned int saved_ctx_pgmode;
  unsigned int gang_mode;
  unsigned int gang_mode_default;
  unsigned int gang_width;
  unsigned int gang_height;
  unsigned int gang_bytesperline;
  unsigned int gang_sizeimage;

  // formats supported
  DECLARE_BITMAP(fmts_bitmap, MAX_FORMAT_NUM);
  atomic_t power_on_refcnt;
  struct v4l2_fh *fh;

  // bypass flag for VI bypass mode
  bool bypass;
  bool bfirst_fstart;
  enum channel_capture_state capture_state;
  atomic_t is_streaming;
  int requested_kbyteps;
  unsigned long requested_hz;
  int grp_id;

  struct tegra_vi_channel_fops *fops;
};

Also note that the constant QUEUED_BUFFERS is = 4.

Error traces

May  2 14:11:20 deadfire3 kernel: [ 8675.391692] video4linux video3: frame start syncpt timeout!0
May  2 14:11:20 deadfire3 kernel: [ 8675.399203] Unable to handle kernel NULL pointer dereference at virtual address 0000004c
May  2 14:11:20 deadfire3 kernel: [ 8675.411531] pgd = ffffffc00007d000
May  2 14:11:21 deadfire3 kernel: [ 8675.414938] [0000004c] *pgd=000000017fc05003, *pmd=000000017fc06003, *pte=00e0000050041407
May  2 14:11:21 deadfire3 kernel: [ 8675.423853] Internal error: Oops: 96000046 [#1] PREEMPT SMP
May  2 14:11:21 deadfire3 kernel: [ 8675.429421] Enter nvdumper_crash_setup_regs
May  2 14:11:21 deadfire3 kernel: [ 8675.433608] nvdumper: all registers are saved.
May  2 14:11:21 deadfire3 kernel: [ 8675.433610] nvdumper: all registers are saved.
May  2 14:11:21 deadfire3 kernel: [ 8675.433611] nvdumper: all registers are saved.
May  2 14:11:21 deadfire3 kernel: [ 8675.446934] nvdumper: all registers are saved.
May  2 14:11:21 deadfire3 kernel: [ 8675.451375] Modules linked in: bcmdhd cfg80211 bluedroid_pm
May  2 14:11:21 deadfire3 kernel: [ 8675.457020] CPU: 2 PID: 20545 Comm: vi-output-4, tc Not tainted 3.10.96-skydio-gc145d3a6e8d-dirty #147
May  2 14:11:21 deadfire3 kernel: [ 8675.466318] task: ffffffc0fe172fc0 ti: ffffffc0d6310000 task.ti: ffffffc0d6310000
May  2 14:11:21 deadfire3 kernel: [ 8675.473802] PC is at free_ring_buffers+0x3c/0xd0
May  2 14:11:21 deadfire3 kernel: [ 8675.478420] LR is at tegra_channel_release_frame+0xa0/0xac
May  2 14:11:21 deadfire3 kernel: [ 8675.483902] pc : [<ffffffc00074fe10>] lr : [<ffffffc000750064>] pstate: 60000145
May  2 14:11:21 deadfire3 kernel: [ 8675.491290] sp : ffffffc0d6313d40
May  2 14:11:21 deadfire3 kernel: [ 8675.494609] x29: ffffffc0d6313d40 x28: ffffffc0d6310000
May  2 14:11:21 deadfire3 kernel: [ 8675.499947] x27: 0000000000000001 x26: ffffffc0fc82e1d0
May  2 14:11:21 deadfire3 kernel: [ 8675.505287] x25: ffffffc0d6313e20 x24: ffffffc0000d0ed8
May  2 14:11:21 deadfire3 kernel: [ 8675.510630] x23: ffffffc001003c90 x22: 0000000000000005
May  2 14:11:21 deadfire3 kernel: [ 8675.515969] x21: 0000000000000001 x20: 0000000000000001
May  2 14:11:21 deadfire3 kernel: [ 8675.521310] x19: ffffffc0fc82dbc0 x18: 000000000000013f
May  2 14:11:21 deadfire3 kernel: [ 8675.526649] x17: 0000007f993c130c x16: 0000000000000000
May  2 14:11:21 deadfire3 kernel: [ 8675.531985] x15: 0000000000000000 x14: 0000000000000001
May  2 14:11:21 deadfire3 kernel: [ 8675.537324] x13: 000000000000002b x12: 0000000000000150
May  2 14:11:21 deadfire3 kernel: [ 8675.542664] x11: 0000000000129fbe x10: 00000000ffa722d2
May  2 14:11:21 deadfire3 kernel: [ 8675.548001] x9 : ffffffc0d6313bc0 x8 : 00ffffffffffffff
May  2 14:11:21 deadfire3 kernel: [ 8675.553341] x7 : 0000000034155555 x6 : 00000000000021e2
May  2 14:11:21 deadfire3 kernel: [ 8675.558679] x5 : ffffffffc465ffff x4 : 000000000000c9ff
May  2 14:11:21 deadfire3 kernel: [ 8675.564015] x3 : 00000000000021e3 x2 : 0000000000099090
May  2 14:11:21 deadfire3 kernel: [ 8675.569352] x1 : 000000000009908f x0 : 0000000000000014
May  2 14:11:21 deadfire3 kernel: [ 8675.574691]
May  2 14:11:21 deadfire3 kernel: [ 8675.574691] PC: 0xffffffc00074fd90:
May  2 14:11:21 deadfire3 kernel: [ 8675.579652] fd90  f9400400 b94002a1 97f13b13 f9422a60 f9400400 b9400ea1 97f13b0f 91000694
May  2 14:11:21 deadfire3 kernel: [ 8675.587966] fdb0  910012b5 4b170280 6b0002df 54fffd8c a94153f3 a9425bf5 f9401bf7 a8c47bfd
May  2 14:11:21 deadfire3 kernel: [ 8675.596281] fdd0  d65f03c0 a9bd7bfd 910003fd a90153f3 a9025bf5 aa0003f3 2a0103f4 34000541
May  2 14:11:21 deadfire3 kernel: [ 8675.604594] fdf0  52800035 528000b6 b945da60 9102d800 f8607a60 b948d661 11000422 b908d662
May  2 14:11:21 deadfire3 kernel: [ 8675.612916] fe10  b9003801 b9001015 b9450e62 b9426001 34000041 b9005802 b9491661 7100043f
May  2 14:11:21 deadfire3 kernel: [ 8675.621228] fe30  54000081 b945e261 7100043f 54000088 b945da61 9105a021 b8217a76 b945da61
May  2 14:11:21 deadfire3 kernel: [ 8675.629545] fe50  11000422 b905da62 8b214a61 b945a021 97ffb6de b945da60 71000c1f 54000049
May  2 14:11:21 deadfire3 kernel: [ 8675.637852] fe70  b905da7f b945de60 51000400 b905de60 b945e260 11000400 b905e260 71000694
May  2 14:11:21 deadfire3 kernel: [ 8675.646160]
May  2 14:11:21 deadfire3 kernel: [ 8675.646160] LR: 0xffffffc00074ffe4:
May  2 14:11:21 deadfire3 kernel: [ 8675.651123] ffe4  d63f0060 34000160 aa1303e0 97ffff48 52800040 b9091660 aa1303e0 aa1403e1
May  2 14:11:21 deadfire3 kernel: [ 8675.659443] 0004  910083a2 528000a3 97ffffa6 14000015 f0006400 794bf400 36100160 f0006400
May  2 14:11:21 deadfire3 kernel: [ 8675.667753] 0024  91162000 91014000 91026261 f0004b62 91256042 b0002703 9104e063 9101e063
May  2 14:11:21 deadfire3 kernel: [ 8675.676071] 0044  97efd5f4 b945da60 9105a000 52800081 b8207a61 aa1303e0 52800021 97ffff5d
May  2 14:11:21 deadfire3 kernel: [ 8675.684381] 0064  a94153f3 a8c37bfd d65f03c0 a9ba7bfd 910003fd a90153f3 a9025bf5 a90363f7
May  2 14:11:21 deadfire3 kernel: [ 8675.692691] 0084  a9046bf9 f9002bfb aa0003fa 2a0103f5 9120e017 91212016 9121601b aa1b03e0
May  2 14:11:21 deadfire3 kernel: [ 8675.700999] 00a4  9410778f f9441f40 d10d2013 f9400014 d10d2294 eb0002ff 54000340 d2802019
May  2 14:11:21 deadfire3 kernel: [ 8675.709312] 00c4  d2804018 aa1303e0 2a1503e1 97ffb642 f941aa60 f941a662 f9000440 f9000002
May  2 14:11:21 deadfire3 kernel: [ 8675.717628]
May  2 14:11:21 deadfire3 kernel: [ 8675.717628] SP: 0xffffffc0d6313cc0:
May  2 14:11:21 deadfire3 kernel: [ 8675.722588] 3cc0  00000001 00000000 00000001 00000000 00000005 00000000 01003c90 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8675.730904] 3ce0  000d0ed8 ffffffc0 d6313e20 ffffffc0 fc82e1d0 ffffffc0 00000001 00000000
May  2 14:11:21 deadfire3 kernel: [ 8675.739213] 3d00  d6310000 ffffffc0 d6313d40 ffffffc0 00750064 ffffffc0 d6313d40 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8675.747528] 3d20  0074fe10 ffffffc0 60000145 00000000 fc82dbc0 ffffffc0 faff0400 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8675.755847] 3d40  d6313d70 ffffffc0 00750064 ffffffc0 fc82dbc0 ffffffc0 faff0400 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8675.764158] 3d60  fc82e41c ffffffc0 014179f0 ffffffc0 d6313da0 ffffffc0 007505d8 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8675.772466] 3d80  fc82dbc0 ffffffc0 faff0400 ffffffc0 000021e3 00000000 171ca58d 00000000
May  2 14:11:21 deadfire3 kernel: [ 8675.780775] 3da0  d6313e30 ffffffc0 000d04b8 ffffffc0 d19a7b50 ffffffc0 01415b28 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8675.789088]
May  2 14:11:21 deadfire3 kernel: [ 8675.789088] X5: 0xffffffffc465ff7f:
May  2 14:11:21 deadfire3 kernel: [ 8675.794048] ff7c  ******** ******** ******** ******** ******** ******** ******** ********
May  2 14:11:21 deadfire3 kernel: [ 8675.802375] ff9c  ******** ******** ******** ******** ******** ******** ******** ********
May  2 14:11:21 deadfire3 kernel: [ 8675.810687] ffbc  ******** ******** ******** ******** ******** ******** ******** ********
May  2 14:11:21 deadfire3 kernel: [ 8675.819006] ffdc  ******** ******** ******** ******** ******** ******** ******** ********
May  2 14:11:21 deadfire3 kernel: [ 8675.827325] fffc  ******** ******** ******** ******** ******** ******** ******** ********
May  2 14:11:21 deadfire3 kernel: [ 8675.835638] 001c  ******** ******** ******** ******** ******** ******** ******** ********
May  2 14:11:21 deadfire3 kernel: [ 8675.843951] 003c  ******** ******** ******** ******** ******** ******** ******** ********
May  2 14:11:21 deadfire3 kernel: [ 8675.852279] 005c  ******** ******** ******** ******** ******** ******** ******** ********
May  2 14:11:21 deadfire3 kernel: [ 8675.860607] 007c  ******** ******** ******** ******** ******** ******** ******** ********
May  2 14:11:21 deadfire3 kernel: [ 8675.868929]
May  2 14:11:21 deadfire3 kernel: [ 8675.868929] X9: 0xffffffc0d6313b40:
May  2 14:11:21 deadfire3 kernel: [ 8675.873893] 3b40  d6313ba0 ffffffc0 000813a8 ffffffc0 00000000 00000000 00000400 00000000
May  2 14:11:21 deadfire3 kernel: [ 8675.882220] 3b60  d6313b70 ffffffc0 00081214 ffffffc0 d6313d40 ffffffc0 00084c30 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8675.890536] 3b80  fc82dbc0 ffffffc0 00000001 00000000 d6313d40 ffffffc0 0074fe10 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8675.898846] 3ba0  40000000 00000000 d6310000 ffffffc0 d6313d10 ffffffc0 00084e1c ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8675.907164] 3bc0  d6313c00 ffffffc0 0039fe4c ffffffc0 00000002 00000000 fdda90a0 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8675.915484] 3be0  00000000 00000000 0003de80 00000000 d6313d90 ffffffc0 00000005 00000000
May  2 14:11:21 deadfire3 kernel: [ 8675.923795] 3c00  d6313ce0 ffffffc0 003a03fc ffffffc0 00000002 00000000 0003de80 00000000
May  2 14:11:21 deadfire3 kernel: [ 8675.932117] 3c20  00000014 00000000 0009908f 00000000 00099090 00000000 000021e3 00000000
May  2 14:11:21 deadfire3 kernel: [ 8675.940405]
May  2 14:11:21 deadfire3 kernel: [ 8675.940405] X19: 0xffffffc0fc82db40:
May  2 14:11:21 deadfire3 kernel: [ 8675.945450] db40  00000040 00000001 00000001 00000001 00000002 00000000 00000001 00000000
May  2 14:11:21 deadfire3 kernel: [ 8675.953766] db60  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8675.962082] db80  00008119 00000000 00000000 00000000 fd15d240 ffffffc0 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8675.970388] dba0  00000000 00000000 00000000 00000000 00000004 00000000 012a8368 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8675.978696] dbc0  00000000 00000000 00000000 00000000 fd59c958 ffffffc0 fc82d298 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8675.987008] dbe0  fc8280e8 ffffffc0 00000004 00000000 fc82df20 ffffffc0 00010001 00000000
May  2 14:11:21 deadfire3 kernel: [ 8675.995321] dc00  00000000 00000000 00000000 00010001 00010001 00000000 fc82dfd0 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.003639] dc20  fd6ddac0 ffffffc0 00000000 00000000 00000001 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.011955]
May  2 14:11:21 deadfire3 kernel: [ 8676.011955] X23: 0xffffffc001003c10:
May  2 14:11:21 deadfire3 kernel: [ 8676.017003] 3c10  67697326 61773e2d 635f7469 65646c68 00746978 00000000 67697326 72673e2d
May  2 14:11:21 deadfire3 kernel: [ 8676.025326] 3c30  5f70756f 65737772 0000006d 00000000 67697326 72633e2d 675f6465 64726175
May  2 14:11:21 deadfire3 kernel: [ 8676.033642] 3c50  74756d5f 00007865 6d6f682f 6b732f65 6f696479 69766e2f 5f616964 6e72656b
May  2 14:11:21 deadfire3 kernel: [ 8676.041957] 3c70  692f6c65 756c636e 6c2f6564 78756e69 636f692f 65746e6f 682e7478 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.050273] 3c90  6d6f682f 6b732f65 6f696479 69766e2f 5f616964 6e72656b 692f6c65 756c636e
May  2 14:11:21 deadfire3 kernel: [ 8676.058584] 3cb0  6c2f6564 78756e69 6572662f 72657a65 0000682e 00000000 6b736174 7274735f
May  2 14:11:21 deadfire3 kernel: [ 8676.066901] 3cd0  00746375 00000000 7465735f 6469745f 6464615f 73736572 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.075215] 3cf0  2d6d6d26 616d6d3e 65735f70 0000006d 3e2d7826 74696177 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.083537]
May  2 14:11:21 deadfire3 kernel: [ 8676.083537] X24: 0xffffffc0000d0e58:
May  2 14:11:21 deadfire3 kernel: [ 8676.088587] 0e58  910003e1 9272c424 f9400884 f900009f 942a7540 aa0003f5 91006264 f9400e65
May  2 14:11:21 deadfire3 kernel: [ 8676.096899] 0e78  eb05009f 540000e0 f9400483 f90004a3 f9000065 f9000e64 f9000484 14000009
May  2 14:11:21 deadfire3 kernel: [ 8676.105217] 0e98  91002280 f9400681 eb00003f 540000a0 aa1403e0 2a1703e1 aa1603e2 94002435
May  2 14:11:21 deadfire3 kernel: [ 8676.113529] 0eb8  aa1403e0 aa1503e1 942a75a6 a94153f3 a9425bf5 f9401bf7 a8c47bfd d65f03c0
May  2 14:11:21 deadfire3 kernel: [ 8676.121842] 0ed8  a9be7bfd 910003fd f9000bf3 aa0003f3 940045e3 34000100 91006261 f9401262
May  2 14:11:21 deadfire3 kernel: [ 8676.130150] 0ef8  f9400e63 f9000462 f9000043 f9000e61 f9000421 f9400bf3 a8c27bfd d65f03c0
May  2 14:11:21 deadfire3 kernel: [ 8676.138460] 0f18  a9bf7bfd 910003fd aa0003e4 f85f0005 f9400066 52800000 eb0600bf 54000201
May  2 14:11:21 deadfire3 kernel: [ 8676.146766] 0f38  b85f8086 b9400867 6b0700df 54000181 1100fcc0 6b1f00df 1a86b000 13067c00
May  2 14:11:21 deadfire3 kernel: [ 8676.155093]
May  2 14:11:21 deadfire3 kernel: [ 8676.155093] X25: 0xffffffc0d6313da0:
May  2 14:11:21 deadfire3 kernel: [ 8676.160147] 3da0  d6313e30 ffffffc0 000d04b8 ffffffc0 d19a7b50 ffffffc0 01415b28 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.168486] 3dc0  01003d00 ffffffc0 fc82dbc0 ffffffc0 00750460 ffffffc0 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.176804] 3de0  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.185115] 3e00  d19a7b50 ffffffc0 00000000 00000000 fe172fc0 ffffffc0 000d0ed8 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.193427] 3e20  d6313e20 ffffffc0 d6313e20 ffffffc0 00000000 00000000 00085520 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.201735] 3e40  000d03f8 ffffffc0 d19a7b50 ffffffc0 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.210050] 3e60  00000000 00000000 000dcc5c ffffffc0 d6313eb0 ffffffc0 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.218364] 3e80  1fe585c0 ffffffc0 fc82dbc0 ffffffc0 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.226676]
May  2 14:11:21 deadfire3 kernel: [ 8676.226676] X26: 0xffffffc0fc82e150:
May  2 14:11:21 deadfire3 kernel: [ 8676.231725] e150  00000000 00000000 00000000 00000000 00000005 00000005 00000005 00000005
May  2 14:11:21 deadfire3 kernel: [ 8676.240036] e170  00000004 ffffffc0 faff0400 ffffffc0 d3572800 ffffffc0 fb3e3800 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.248351] e190  00000014 00000000 00000002 fd96d6ac 0269bf88 00000000 fe3fb0c0 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.256661] e1b0  fe172fc0 ffffffc0 f82df82d 00000000 fc82e1c0 ffffffc0 fc82e1c0 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.264971] e1d0  a1f7a1f7 00000000 fc82e1d8 ffffffc0 fc82e1d8 ffffffc0 00000001 00000017
May  2 14:11:21 deadfire3 kernel: [ 8676.273293] e1f0  00000000 00000000 fc82dfe8 ffffffc0 d51bb540 ffffffc0 00c315d8 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.281618] e210  00c2fa00 ffffffc0 fc82dbc0 ffffffc0 00000378 00002000 00000000 00000002
May  2 14:11:21 deadfire3 kernel: [ 8676.289932] e230  fab3c800 ffffffc0 faff0400 ffffffc0 d3572800 ffffffc0 fb3e3800 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.298251]
May  2 14:11:21 deadfire3 kernel: [ 8676.298251] X28: 0xffffffc0d630ff80:
May  2 14:11:21 deadfire3 kernel: [ 8676.303298] ff80  cfc4c4cf c2cfc4c2 c3c2cfc4 cbbfc1ce becbbfbe bfbecbbf cbbfbecb becbbfbe
May  2 14:11:21 deadfire3 kernel: [ 8676.311611] ffa0  c1bfccc1 cbbfbfcc becbbfbe c1becac1 c9bebeca bdc8bdbf bcbac7bc c8bfbac7
May  2 14:11:21 deadfire3 kernel: [ 8676.319925] ffc0  bbc8bfbb bfbdc7bf c6bbbdc7 b9c6bbb9 bab8c5ba c6bbb8c5 b8c5bab9 bab9c6bb
May  2 14:11:21 deadfire3 kernel: [ 8676.328234] ffe0  c5bab8c5 b9c6bbb8 b9b7c4b9 c3bab7c4 b8c1b9b9 bab9c3ba c3bab9c3 bac4bbb9
May  2 14:11:21 deadfire3 kernel: [ 8676.336550] 0000  00000002 00000000 ffffffff ffffffff fe172fc0 ffffffc0 000bce50 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.344860] 0020  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.353174] 0040  00000000 00000000 00000002 00000002 00000100 00000000 57ac6e9d 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.361500] 0060  3f37363d 343e3535 38364038 41393640 36403838 38364038 41393640 36403838
May  2 14:11:21 deadfire3 kernel: [ 8676.369811]
May  2 14:11:21 deadfire3 kernel: [ 8676.369811] X29: 0xffffffc0d6313cc0:
May  2 14:11:21 deadfire3 kernel: [ 8676.374859] 3cc0  00000001 00000000 00000001 00000000 00000005 00000000 01003c90 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.383182] 3ce0  000d0ed8 ffffffc0 d6313e20 ffffffc0 fc82e1d0 ffffffc0 00000001 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.391504] 3d00  d6310000 ffffffc0 d6313d40 ffffffc0 00750064 ffffffc0 d6313d40 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.399822] 3d20  0074fe10 ffffffc0 60000145 00000000 fc82dbc0 ffffffc0 faff0400 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.408149] 3d40  d6313d70 ffffffc0 00750064 ffffffc0 fc82dbc0 ffffffc0 faff0400 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.416461] 3d60  fc82e41c ffffffc0 014179f0 ffffffc0 d6313da0 ffffffc0 007505d8 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.424782] 3d80  fc82dbc0 ffffffc0 faff0400 ffffffc0 000021e3 00000000 171ca58d 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.433094] 3da0  d6313e30 ffffffc0 000d04b8 ffffffc0 d19a7b50 ffffffc0 01415b28 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.441410]
May  2 14:11:21 deadfire3 kernel: [ 8676.442904] Process vi-output-4, tc (pid: 20545, stack limit = 0xffffffc0d6310058)
May  2 14:11:21 deadfire3 kernel: [ 8676.450467] Stack: (0xffffffc0d6313d40 to 0xffffffc0d6314000)
May  2 14:11:21 deadfire3 kernel: [ 8676.456212] 3d40: d6313d70 ffffffc0 00750064 ffffffc0 fc82dbc0 ffffffc0 faff0400 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.464382] 3d60: fc82e41c ffffffc0 014179f0 ffffffc0 d6313da0 ffffffc0 007505d8 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.472553] 3d80: fc82dbc0 ffffffc0 faff0400 ffffffc0 000021e3 00000000 171ca58d 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.480723] 3da0: d6313e30 ffffffc0 000d04b8 ffffffc0 d19a7b50 ffffffc0 01415b28 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.488893] 3dc0: 01003d00 ffffffc0 fc82dbc0 ffffffc0 00750460 ffffffc0 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.497062] 3de0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.505234] 3e00: d19a7b50 ffffffc0 00000000 00000000 fe172fc0 ffffffc0 000d0ed8 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.513406] 3e20: d6313e20 ffffffc0 d6313e20 ffffffc0 00000000 00000000 00085520 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.521576] 3e40: 000d03f8 ffffffc0 d19a7b50 ffffffc0 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.529748] 3e60: 00000000 00000000 000dcc5c ffffffc0 d6313eb0 ffffffc0 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.537918] 3e80: 1fe585c0 ffffffc0 fc82dbc0 ffffffc0 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.546088] 3ea0: d6313ea0 ffffffc0 d6313ea0 ffffffc0 00000000 00000000 00000000 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.554258] 3ec0: d6313ec0 ffffffc0 d6313ec0 ffffffc0 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.562428] 3ee0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.570599] 3f00: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.578769] 3f20: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.586940] 3f40: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.595110] 3f60: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.603282] 3f80: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.611450] 3fa0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.619620] 3fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000005 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.627792] 3fe0: 00000000 00000000 00000000 00000000 565c4b45 7f797f5c a79a9499 797fa8a2
May  2 14:11:21 deadfire3 kernel: [ 8676.635960] Call trace:
May  2 14:11:21 deadfire3 kernel: [ 8676.638409] [<ffffffc00074fe10>] free_ring_buffers+0x3c/0xd0
May  2 14:11:21 deadfire3 kernel: [ 8676.644065] [<ffffffc000750064>] tegra_channel_release_frame+0xa0/0xac
May  2 14:11:21 deadfire3 kernel: [ 8676.650587] [<ffffffc0007505d8>] tegra_channel_kthread_release+0x178/0x1a4
May  2 14:11:21 deadfire3 kernel: [ 8676.657455] [<ffffffc0000d04b8>] kthread+0xc0/0xc8
May  2 14:11:21 deadfire3 kernel: [ 8676.662245] Code: f8607a60 b948d661 11000422 b908d662 (b9003801)
May  2 14:11:21 deadfire3 kernel: [ 8676.674126] ---[ end trace 7a9d03f4c84d921b ]---

Userspace thread

May  2 14:11:20 deadfire3 kernel: [ 8675.391692] video4linux video3: frame start syncpt timeout!0
May  2 14:11:20 deadfire3 kernel: [ 8675.399203] Unable to handle kernel NULL pointer dereference at virtual address 0000004c
May  2 14:11:20 deadfire3 kernel: [ 8675.411531] pgd = ffffffc00007d000
May  2 14:11:21 deadfire3 kernel: [ 8675.414938] [0000004c] *pgd=000000017fc05003, *pmd=000000017fc06003, *pte=00e0000050041407
May  2 14:11:21 deadfire3 kernel: [ 8675.423853] Internal error: Oops: 96000046 [#1] PREEMPT SMP
May  2 14:11:21 deadfire3 kernel: [ 8675.429421] Enter nvdumper_crash_setup_regs
May  2 14:11:21 deadfire3 kernel: [ 8675.433608] nvdumper: all registers are saved.
May  2 14:11:21 deadfire3 kernel: [ 8675.433610] nvdumper: all registers are saved.
May  2 14:11:21 deadfire3 kernel: [ 8675.433611] nvdumper: all registers are saved.
May  2 14:11:21 deadfire3 kernel: [ 8675.446934] nvdumper: all registers are saved.
May  2 14:11:21 deadfire3 kernel: [ 8675.451375] Modules linked in: bcmdhd cfg80211 bluedroid_pm
May  2 14:11:21 deadfire3 kernel: [ 8675.457020] CPU: 2 PID: 20545 Comm: vi-output-4, tc Not tainted 3.10.96-skydio-gc145d3a6e8d-dirty #147
May  2 14:11:21 deadfire3 kernel: [ 8675.466318] task: ffffffc0fe172fc0 ti: ffffffc0d6310000 task.ti: ffffffc0d6310000
May  2 14:11:21 deadfire3 kernel: [ 8675.473802] PC is at free_ring_buffers+0x3c/0xd0
May  2 14:11:21 deadfire3 kernel: [ 8675.478420] LR is at tegra_channel_release_frame+0xa0/0xac
May  2 14:11:21 deadfire3 kernel: [ 8675.483902] pc : [<ffffffc00074fe10>] lr : [<ffffffc000750064>] pstate: 60000145
May  2 14:11:21 deadfire3 kernel: [ 8675.491290] sp : ffffffc0d6313d40
May  2 14:11:21 deadfire3 kernel: [ 8675.494609] x29: ffffffc0d6313d40 x28: ffffffc0d6310000
May  2 14:11:21 deadfire3 kernel: [ 8675.499947] x27: 0000000000000001 x26: ffffffc0fc82e1d0
May  2 14:11:21 deadfire3 kernel: [ 8675.505287] x25: ffffffc0d6313e20 x24: ffffffc0000d0ed8
May  2 14:11:21 deadfire3 kernel: [ 8675.510630] x23: ffffffc001003c90 x22: 0000000000000005
May  2 14:11:21 deadfire3 kernel: [ 8675.515969] x21: 0000000000000001 x20: 0000000000000001
May  2 14:11:21 deadfire3 kernel: [ 8675.521310] x19: ffffffc0fc82dbc0 x18: 000000000000013f
May  2 14:11:21 deadfire3 kernel: [ 8675.526649] x17: 0000007f993c130c x16: 0000000000000000
May  2 14:11:21 deadfire3 kernel: [ 8675.531985] x15: 0000000000000000 x14: 0000000000000001
May  2 14:11:21 deadfire3 kernel: [ 8675.537324] x13: 000000000000002b x12: 0000000000000150
May  2 14:11:21 deadfire3 kernel: [ 8675.542664] x11: 0000000000129fbe x10: 00000000ffa722d2
May  2 14:11:21 deadfire3 kernel: [ 8675.548001] x9 : ffffffc0d6313bc0 x8 : 00ffffffffffffff
May  2 14:11:21 deadfire3 kernel: [ 8675.553341] x7 : 0000000034155555 x6 : 00000000000021e2
May  2 14:11:21 deadfire3 kernel: [ 8675.558679] x5 : ffffffffc465ffff x4 : 000000000000c9ff
May  2 14:11:21 deadfire3 kernel: [ 8675.564015] x3 : 00000000000021e3 x2 : 0000000000099090
May  2 14:11:21 deadfire3 kernel: [ 8675.569352] x1 : 000000000009908f x0 : 0000000000000014
May  2 14:11:21 deadfire3 kernel: [ 8675.574691]
May  2 14:11:21 deadfire3 kernel: [ 8675.574691] PC: 0xffffffc00074fd90:
May  2 14:11:21 deadfire3 kernel: [ 8675.579652] fd90  f9400400 b94002a1 97f13b13 f9422a60 f9400400 b9400ea1 97f13b0f 91000694
May  2 14:11:21 deadfire3 kernel: [ 8675.587966] fdb0  910012b5 4b170280 6b0002df 54fffd8c a94153f3 a9425bf5 f9401bf7 a8c47bfd
May  2 14:11:21 deadfire3 kernel: [ 8675.596281] fdd0  d65f03c0 a9bd7bfd 910003fd a90153f3 a9025bf5 aa0003f3 2a0103f4 34000541
May  2 14:11:21 deadfire3 kernel: [ 8675.604594] fdf0  52800035 528000b6 b945da60 9102d800 f8607a60 b948d661 11000422 b908d662
May  2 14:11:21 deadfire3 kernel: [ 8675.612916] fe10  b9003801 b9001015 b9450e62 b9426001 34000041 b9005802 b9491661 7100043f
May  2 14:11:21 deadfire3 kernel: [ 8675.621228] fe30  54000081 b945e261 7100043f 54000088 b945da61 9105a021 b8217a76 b945da61
May  2 14:11:21 deadfire3 kernel: [ 8675.629545] fe50  11000422 b905da62 8b214a61 b945a021 97ffb6de b945da60 71000c1f 54000049
May  2 14:11:21 deadfire3 kernel: [ 8675.637852] fe70  b905da7f b945de60 51000400 b905de60 b945e260 11000400 b905e260 71000694
May  2 14:11:21 deadfire3 kernel: [ 8675.646160]
May  2 14:11:21 deadfire3 kernel: [ 8675.646160] LR: 0xffffffc00074ffe4:
May  2 14:11:21 deadfire3 kernel: [ 8675.651123] ffe4  d63f0060 34000160 aa1303e0 97ffff48 52800040 b9091660 aa1303e0 aa1403e1
May  2 14:11:21 deadfire3 kernel: [ 8675.659443] 0004  910083a2 528000a3 97ffffa6 14000015 f0006400 794bf400 36100160 f0006400
May  2 14:11:21 deadfire3 kernel: [ 8675.667753] 0024  91162000 91014000 91026261 f0004b62 91256042 b0002703 9104e063 9101e063
May  2 14:11:21 deadfire3 kernel: [ 8675.676071] 0044  97efd5f4 b945da60 9105a000 52800081 b8207a61 aa1303e0 52800021 97ffff5d
May  2 14:11:21 deadfire3 kernel: [ 8675.684381] 0064  a94153f3 a8c37bfd d65f03c0 a9ba7bfd 910003fd a90153f3 a9025bf5 a90363f7
May  2 14:11:21 deadfire3 kernel: [ 8675.692691] 0084  a9046bf9 f9002bfb aa0003fa 2a0103f5 9120e017 91212016 9121601b aa1b03e0
May  2 14:11:21 deadfire3 kernel: [ 8675.700999] 00a4  9410778f f9441f40 d10d2013 f9400014 d10d2294 eb0002ff 54000340 d2802019
May  2 14:11:21 deadfire3 kernel: [ 8675.709312] 00c4  d2804018 aa1303e0 2a1503e1 97ffb642 f941aa60 f941a662 f9000440 f9000002
May  2 14:11:21 deadfire3 kernel: [ 8675.717628]
May  2 14:11:21 deadfire3 kernel: [ 8675.717628] SP: 0xffffffc0d6313cc0:
May  2 14:11:21 deadfire3 kernel: [ 8675.722588] 3cc0  00000001 00000000 00000001 00000000 00000005 00000000 01003c90 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8675.730904] 3ce0  000d0ed8 ffffffc0 d6313e20 ffffffc0 fc82e1d0 ffffffc0 00000001 00000000
May  2 14:11:21 deadfire3 kernel: [ 8675.739213] 3d00  d6310000 ffffffc0 d6313d40 ffffffc0 00750064 ffffffc0 d6313d40 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8675.747528] 3d20  0074fe10 ffffffc0 60000145 00000000 fc82dbc0 ffffffc0 faff0400 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8675.755847] 3d40  d6313d70 ffffffc0 00750064 ffffffc0 fc82dbc0 ffffffc0 faff0400 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8675.764158] 3d60  fc82e41c ffffffc0 014179f0 ffffffc0 d6313da0 ffffffc0 007505d8 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8675.772466] 3d80  fc82dbc0 ffffffc0 faff0400 ffffffc0 000021e3 00000000 171ca58d 00000000
May  2 14:11:21 deadfire3 kernel: [ 8675.780775] 3da0  d6313e30 ffffffc0 000d04b8 ffffffc0 d19a7b50 ffffffc0 01415b28 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8675.789088]
May  2 14:11:21 deadfire3 kernel: [ 8675.789088] X5: 0xffffffffc465ff7f:
May  2 14:11:21 deadfire3 kernel: [ 8675.794048] ff7c  ******** ******** ******** ******** ******** ******** ******** ********
May  2 14:11:21 deadfire3 kernel: [ 8675.802375] ff9c  ******** ******** ******** ******** ******** ******** ******** ********
May  2 14:11:21 deadfire3 kernel: [ 8675.810687] ffbc  ******** ******** ******** ******** ******** ******** ******** ********
May  2 14:11:21 deadfire3 kernel: [ 8675.819006] ffdc  ******** ******** ******** ******** ******** ******** ******** ********
May  2 14:11:21 deadfire3 kernel: [ 8675.827325] fffc  ******** ******** ******** ******** ******** ******** ******** ********
May  2 14:11:21 deadfire3 kernel: [ 8675.835638] 001c  ******** ******** ******** ******** ******** ******** ******** ********
May  2 14:11:21 deadfire3 kernel: [ 8675.843951] 003c  ******** ******** ******** ******** ******** ******** ******** ********
May  2 14:11:21 deadfire3 kernel: [ 8675.852279] 005c  ******** ******** ******** ******** ******** ******** ******** ********
May  2 14:11:21 deadfire3 kernel: [ 8675.860607] 007c  ******** ******** ******** ******** ******** ******** ******** ********
May  2 14:11:21 deadfire3 kernel: [ 8675.868929]
May  2 14:11:21 deadfire3 kernel: [ 8675.868929] X9: 0xffffffc0d6313b40:
May  2 14:11:21 deadfire3 kernel: [ 8675.873893] 3b40  d6313ba0 ffffffc0 000813a8 ffffffc0 00000000 00000000 00000400 00000000
May  2 14:11:21 deadfire3 kernel: [ 8675.882220] 3b60  d6313b70 ffffffc0 00081214 ffffffc0 d6313d40 ffffffc0 00084c30 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8675.890536] 3b80  fc82dbc0 ffffffc0 00000001 00000000 d6313d40 ffffffc0 0074fe10 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8675.898846] 3ba0  40000000 00000000 d6310000 ffffffc0 d6313d10 ffffffc0 00084e1c ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8675.907164] 3bc0  d6313c00 ffffffc0 0039fe4c ffffffc0 00000002 00000000 fdda90a0 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8675.915484] 3be0  00000000 00000000 0003de80 00000000 d6313d90 ffffffc0 00000005 00000000
May  2 14:11:21 deadfire3 kernel: [ 8675.923795] 3c00  d6313ce0 ffffffc0 003a03fc ffffffc0 00000002 00000000 0003de80 00000000
May  2 14:11:21 deadfire3 kernel: [ 8675.932117] 3c20  00000014 00000000 0009908f 00000000 00099090 00000000 000021e3 00000000
May  2 14:11:21 deadfire3 kernel: [ 8675.940405]
May  2 14:11:21 deadfire3 kernel: [ 8675.940405] X19: 0xffffffc0fc82db40:
May  2 14:11:21 deadfire3 kernel: [ 8675.945450] db40  00000040 00000001 00000001 00000001 00000002 00000000 00000001 00000000
May  2 14:11:21 deadfire3 kernel: [ 8675.953766] db60  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8675.962082] db80  00008119 00000000 00000000 00000000 fd15d240 ffffffc0 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8675.970388] dba0  00000000 00000000 00000000 00000000 00000004 00000000 012a8368 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8675.978696] dbc0  00000000 00000000 00000000 00000000 fd59c958 ffffffc0 fc82d298 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8675.987008] dbe0  fc8280e8 ffffffc0 00000004 00000000 fc82df20 ffffffc0 00010001 00000000
May  2 14:11:21 deadfire3 kernel: [ 8675.995321] dc00  00000000 00000000 00000000 00010001 00010001 00000000 fc82dfd0 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.003639] dc20  fd6ddac0 ffffffc0 00000000 00000000 00000001 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.011955]
May  2 14:11:21 deadfire3 kernel: [ 8676.011955] X23: 0xffffffc001003c10:
May  2 14:11:21 deadfire3 kernel: [ 8676.017003] 3c10  67697326 61773e2d 635f7469 65646c68 00746978 00000000 67697326 72673e2d
May  2 14:11:21 deadfire3 kernel: [ 8676.025326] 3c30  5f70756f 65737772 0000006d 00000000 67697326 72633e2d 675f6465 64726175
May  2 14:11:21 deadfire3 kernel: [ 8676.033642] 3c50  74756d5f 00007865 6d6f682f 6b732f65 6f696479 69766e2f 5f616964 6e72656b
May  2 14:11:21 deadfire3 kernel: [ 8676.041957] 3c70  692f6c65 756c636e 6c2f6564 78756e69 636f692f 65746e6f 682e7478 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.050273] 3c90  6d6f682f 6b732f65 6f696479 69766e2f 5f616964 6e72656b 692f6c65 756c636e
May  2 14:11:21 deadfire3 kernel: [ 8676.058584] 3cb0  6c2f6564 78756e69 6572662f 72657a65 0000682e 00000000 6b736174 7274735f
May  2 14:11:21 deadfire3 kernel: [ 8676.066901] 3cd0  00746375 00000000 7465735f 6469745f 6464615f 73736572 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.075215] 3cf0  2d6d6d26 616d6d3e 65735f70 0000006d 3e2d7826 74696177 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.083537]
May  2 14:11:21 deadfire3 kernel: [ 8676.083537] X24: 0xffffffc0000d0e58:
May  2 14:11:21 deadfire3 kernel: [ 8676.088587] 0e58  910003e1 9272c424 f9400884 f900009f 942a7540 aa0003f5 91006264 f9400e65
May  2 14:11:21 deadfire3 kernel: [ 8676.096899] 0e78  eb05009f 540000e0 f9400483 f90004a3 f9000065 f9000e64 f9000484 14000009
May  2 14:11:21 deadfire3 kernel: [ 8676.105217] 0e98  91002280 f9400681 eb00003f 540000a0 aa1403e0 2a1703e1 aa1603e2 94002435
May  2 14:11:21 deadfire3 kernel: [ 8676.113529] 0eb8  aa1403e0 aa1503e1 942a75a6 a94153f3 a9425bf5 f9401bf7 a8c47bfd d65f03c0
May  2 14:11:21 deadfire3 kernel: [ 8676.121842] 0ed8  a9be7bfd 910003fd f9000bf3 aa0003f3 940045e3 34000100 91006261 f9401262
May  2 14:11:21 deadfire3 kernel: [ 8676.130150] 0ef8  f9400e63 f9000462 f9000043 f9000e61 f9000421 f9400bf3 a8c27bfd d65f03c0
May  2 14:11:21 deadfire3 kernel: [ 8676.138460] 0f18  a9bf7bfd 910003fd aa0003e4 f85f0005 f9400066 52800000 eb0600bf 54000201
May  2 14:11:21 deadfire3 kernel: [ 8676.146766] 0f38  b85f8086 b9400867 6b0700df 54000181 1100fcc0 6b1f00df 1a86b000 13067c00
May  2 14:11:21 deadfire3 kernel: [ 8676.155093]
May  2 14:11:21 deadfire3 kernel: [ 8676.155093] X25: 0xffffffc0d6313da0:
May  2 14:11:21 deadfire3 kernel: [ 8676.160147] 3da0  d6313e30 ffffffc0 000d04b8 ffffffc0 d19a7b50 ffffffc0 01415b28 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.168486] 3dc0  01003d00 ffffffc0 fc82dbc0 ffffffc0 00750460 ffffffc0 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.176804] 3de0  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.185115] 3e00  d19a7b50 ffffffc0 00000000 00000000 fe172fc0 ffffffc0 000d0ed8 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.193427] 3e20  d6313e20 ffffffc0 d6313e20 ffffffc0 00000000 00000000 00085520 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.201735] 3e40  000d03f8 ffffffc0 d19a7b50 ffffffc0 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.210050] 3e60  00000000 00000000 000dcc5c ffffffc0 d6313eb0 ffffffc0 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.218364] 3e80  1fe585c0 ffffffc0 fc82dbc0 ffffffc0 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.226676]
May  2 14:11:21 deadfire3 kernel: [ 8676.226676] X26: 0xffffffc0fc82e150:
May  2 14:11:21 deadfire3 kernel: [ 8676.231725] e150  00000000 00000000 00000000 00000000 00000005 00000005 00000005 00000005
May  2 14:11:21 deadfire3 kernel: [ 8676.240036] e170  00000004 ffffffc0 faff0400 ffffffc0 d3572800 ffffffc0 fb3e3800 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.248351] e190  00000014 00000000 00000002 fd96d6ac 0269bf88 00000000 fe3fb0c0 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.256661] e1b0  fe172fc0 ffffffc0 f82df82d 00000000 fc82e1c0 ffffffc0 fc82e1c0 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.264971] e1d0  a1f7a1f7 00000000 fc82e1d8 ffffffc0 fc82e1d8 ffffffc0 00000001 00000017
May  2 14:11:21 deadfire3 kernel: [ 8676.273293] e1f0  00000000 00000000 fc82dfe8 ffffffc0 d51bb540 ffffffc0 00c315d8 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.281618] e210  00c2fa00 ffffffc0 fc82dbc0 ffffffc0 00000378 00002000 00000000 00000002
May  2 14:11:21 deadfire3 kernel: [ 8676.289932] e230  fab3c800 ffffffc0 faff0400 ffffffc0 d3572800 ffffffc0 fb3e3800 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.298251]
May  2 14:11:21 deadfire3 kernel: [ 8676.298251] X28: 0xffffffc0d630ff80:
May  2 14:11:21 deadfire3 kernel: [ 8676.303298] ff80  cfc4c4cf c2cfc4c2 c3c2cfc4 cbbfc1ce becbbfbe bfbecbbf cbbfbecb becbbfbe
May  2 14:11:21 deadfire3 kernel: [ 8676.311611] ffa0  c1bfccc1 cbbfbfcc becbbfbe c1becac1 c9bebeca bdc8bdbf bcbac7bc c8bfbac7
May  2 14:11:21 deadfire3 kernel: [ 8676.319925] ffc0  bbc8bfbb bfbdc7bf c6bbbdc7 b9c6bbb9 bab8c5ba c6bbb8c5 b8c5bab9 bab9c6bb
May  2 14:11:21 deadfire3 kernel: [ 8676.328234] ffe0  c5bab8c5 b9c6bbb8 b9b7c4b9 c3bab7c4 b8c1b9b9 bab9c3ba c3bab9c3 bac4bbb9
May  2 14:11:21 deadfire3 kernel: [ 8676.336550] 0000  00000002 00000000 ffffffff ffffffff fe172fc0 ffffffc0 000bce50 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.344860] 0020  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.353174] 0040  00000000 00000000 00000002 00000002 00000100 00000000 57ac6e9d 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.361500] 0060  3f37363d 343e3535 38364038 41393640 36403838 38364038 41393640 36403838
May  2 14:11:21 deadfire3 kernel: [ 8676.369811]
May  2 14:11:21 deadfire3 kernel: [ 8676.369811] X29: 0xffffffc0d6313cc0:
May  2 14:11:21 deadfire3 kernel: [ 8676.374859] 3cc0  00000001 00000000 00000001 00000000 00000005 00000000 01003c90 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.383182] 3ce0  000d0ed8 ffffffc0 d6313e20 ffffffc0 fc82e1d0 ffffffc0 00000001 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.391504] 3d00  d6310000 ffffffc0 d6313d40 ffffffc0 00750064 ffffffc0 d6313d40 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.399822] 3d20  0074fe10 ffffffc0 60000145 00000000 fc82dbc0 ffffffc0 faff0400 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.408149] 3d40  d6313d70 ffffffc0 00750064 ffffffc0 fc82dbc0 ffffffc0 faff0400 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.416461] 3d60  fc82e41c ffffffc0 014179f0 ffffffc0 d6313da0 ffffffc0 007505d8 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.424782] 3d80  fc82dbc0 ffffffc0 faff0400 ffffffc0 000021e3 00000000 171ca58d 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.433094] 3da0  d6313e30 ffffffc0 000d04b8 ffffffc0 d19a7b50 ffffffc0 01415b28 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.441410]
May  2 14:11:21 deadfire3 kernel: [ 8676.442904] Process vi-output-4, tc (pid: 20545, stack limit = 0xffffffc0d6310058)
May  2 14:11:21 deadfire3 kernel: [ 8676.450467] Stack: (0xffffffc0d6313d40 to 0xffffffc0d6314000)
May  2 14:11:21 deadfire3 kernel: [ 8676.456212] 3d40: d6313d70 ffffffc0 00750064 ffffffc0 fc82dbc0 ffffffc0 faff0400 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.464382] 3d60: fc82e41c ffffffc0 014179f0 ffffffc0 d6313da0 ffffffc0 007505d8 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.472553] 3d80: fc82dbc0 ffffffc0 faff0400 ffffffc0 000021e3 00000000 171ca58d 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.480723] 3da0: d6313e30 ffffffc0 000d04b8 ffffffc0 d19a7b50 ffffffc0 01415b28 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.488893] 3dc0: 01003d00 ffffffc0 fc82dbc0 ffffffc0 00750460 ffffffc0 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.497062] 3de0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.505234] 3e00: d19a7b50 ffffffc0 00000000 00000000 fe172fc0 ffffffc0 000d0ed8 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.513406] 3e20: d6313e20 ffffffc0 d6313e20 ffffffc0 00000000 00000000 00085520 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.521576] 3e40: 000d03f8 ffffffc0 d19a7b50 ffffffc0 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.529748] 3e60: 00000000 00000000 000dcc5c ffffffc0 d6313eb0 ffffffc0 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.537918] 3e80: 1fe585c0 ffffffc0 fc82dbc0 ffffffc0 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.546088] 3ea0: d6313ea0 ffffffc0 d6313ea0 ffffffc0 00000000 00000000 00000000 ffffffc0
May  2 14:11:21 deadfire3 kernel: [ 8676.554258] 3ec0: d6313ec0 ffffffc0 d6313ec0 ffffffc0 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.562428] 3ee0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.570599] 3f00: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.578769] 3f20: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.586940] 3f40: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.595110] 3f60: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.603282] 3f80: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.611450] 3fa0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.619620] 3fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000005 00000000
May  2 14:11:21 deadfire3 kernel: [ 8676.627792] 3fe0: 00000000 00000000 00000000 00000000 565c4b45 7f797f5c a79a9499 797fa8a2
May  2 14:11:21 deadfire3 kernel: [ 8676.635960] Call trace:
May  2 14:11:21 deadfire3 kernel: [ 8676.638409] [<ffffffc00074fe10>] free_ring_buffers+0x3c/0xd0
May  2 14:11:21 deadfire3 kernel: [ 8676.644065] [<ffffffc000750064>] tegra_channel_release_frame+0xa0/0xac
May  2 14:11:21 deadfire3 kernel: [ 8676.650587] [<ffffffc0007505d8>] tegra_channel_kthread_release+0x178/0x1a4
May  2 14:11:21 deadfire3 kernel: [ 8676.657455] [<ffffffc0000d04b8>] kthread+0xc0/0xc8
May  2 14:11:21 deadfire3 kernel: [ 8676.662245] Code: f8607a60 b948d661 11000422 b908d662 (b9003801)
May  2 14:11:21 deadfire3 kernel: [ 8676.674126] ---[ end trace 7a9d03f4c84d921b ]---


## Userspace thread


May  4 09:44:30 deadfire3 kernel: [   60.123409] platform d.regulator: Driver reg-fixed-sync-voltage requests probe deferral
May  4 09:45:41 deadfire3 kernel: [  131.530657] tc358840 1-000f: enable_stream: disable
May  4 09:45:41 deadfire3 kernel: [  131.532778] tc358840 1-000f: tc358840_set_csi: Enabling CSI TX0
May  4 09:45:41 deadfire3 kernel: [  131.533126] tc358840 1-000f: tc358840_set_pll:
May  4 09:45:41 deadfire3 kernel: [  131.533132] tc358840 1-000f: tc358840_set_pll: Updating PLL clock of CSI TX0, hsck=549818136
May  4 09:45:41 deadfire3 kernel: [  131.550845] tc358840 1-000f: tc358840_set_csi: Disabling CSI TX1
May  4 09:45:44 deadfire3 kernel: [  134.602004] tc358840 1-000f: enable_stream: enable
May  4 09:45:44 deadfire3 kernel: [  134.604160] tc358840 1-000f: enable_stream: Stream enabled! Remaining timeout attempts: 100
May  4 09:45:44 deadfire3 kernel: [  134.811831] video4linux video3: frame start syncpt timeout!0
May  4 09:46:04 deadfire3 kernel: [  154.831841] video4linux video3: MW_ACK_DONE syncpoint time out!0
May  4 09:46:04 deadfire3 kernel: [  154.838520] Unable to handle kernel paging request at virtual address dead000000100108
May  4 09:46:04 deadfire3 kernel: [  154.848495] pgd = ffffffc0e0fbb000
May  4 09:46:04 deadfire3 kernel: [  154.853344] [dead000000100108] *pgd=0000000160fbc003, *pmd=0000000000000000
May  4 09:46:04 deadfire3 kernel: [  154.861295] Internal error: Oops: 96000044 [#1] PREEMPT SMP
May  4 09:46:04 deadfire3 kernel: [  154.866939] Enter nvdumper_crash_setup_regs
May  4 09:46:04 deadfire3 kernel: [  154.871340] nvdumper: all registers are saved.
May  4 09:46:04 deadfire3 kernel: [  154.871355] nvdumper: all registers are saved.
May  4 09:46:04 deadfire3 kernel: [  154.871369] nvdumper: all registers are saved.
May  4 09:46:04 deadfire3 kernel: [  154.884859] nvdumper: all registers are saved.
May  4 09:46:06 deadfire3 kernel: [  154.889358] Modules linked in: bcmdhd cfg80211 bluedroid_pm
May  4 09:46:06 deadfire3 kernel: [  154.895200] CPU: 0 PID: 1110 Comm: frontend_launch Not tainted 3.10.96-skydio-g9a5b6a4739e-dirty #151
May  4 09:46:06 deadfire3 kernel: [  154.904499] task: ffffffc0fd671000 ti: ffffffc0e0f60000 task.ti: ffffffc0e0f60000
May  4 09:46:06 deadfire3 kernel: [  154.912082] PC is at tegra_channel_queued_buf_done+0x6c/0x168
May  4 09:46:06 deadfire3 kernel: [  154.917911] LR is at tegra_channel_queued_buf_done+0x64/0x168
May  4 09:46:06 deadfire3 kernel: [  154.923725] pc : [<ffffffc000750060>] lr : [<ffffffc000750058>] pstate: 20000145
May  4 09:46:06 deadfire3 kernel: [  154.931188] sp : ffffffc0e0f63b50
May  4 09:46:06 deadfire3 kernel: [  154.934560] x29: ffffffc0e0f63b50 x28: 0000000000000001
May  4 09:46:06 deadfire3 kernel: [  154.940017] x27: ffffffc0fc016418 x26: ffffffc0fc015bc0
May  4 09:46:06 deadfire3 kernel: [  154.945461] x25: 0000000000000100 x24: 0000000000000200
May  4 09:46:06 deadfire3 kernel: [  154.950908] x23: ffffffc0fc0163f8 x22: ffffffc0fc016408
May  4 09:46:06 deadfire3 kernel: [  154.956348] x21: 0000000000000005 x20: dead0000000ffdb8
May  4 09:46:06 deadfire3 kernel: [  154.961798] x19: ffffffc0fa22d800 x18: 0000007fc334b1f4
May  4 09:46:06 deadfire3 kernel: [  154.967241] x17: 0000007f8e08b880 x16: 0000000000000000
May  4 09:46:06 deadfire3 kernel: [  154.972683] x15: 0000000000000000 x14: 0000000000000004
May  4 09:46:06 deadfire3 kernel: [  154.978124] x13: 0000000000000040 x12: 0000000000000002
May  4 09:46:06 deadfire3 kernel: [  154.983562] x11: ffffffc0e4941dc0 x10: ffffffc0e4941dc0
May  4 09:46:06 deadfire3 kernel: [  154.989005] x9 : ffffffc0e0f63880 x8 : ffffffc0fd671520
May  4 09:46:06 deadfire3 kernel: [  154.994448] x7 : ffffffc01fe58670 x6 : ffffffc001007098
May  4 09:46:06 deadfire3 kernel: [  154.999888] x5 : 0000000000000d3b x4 : 0000000000000000
May  4 09:46:06 deadfire3 kernel: [  155.005330] x3 : 0000000000000000 x2 : dead000000100100
May  4 09:46:06 deadfire3 kernel: [  155.010772] x1 : 0000000000000005 x0 : dead000000200200
May  4 09:46:06 deadfire3 kernel: [  155.016221]
May  4 09:46:06 deadfire3 kernel: [  155.016221] PC: 0xffffffc00074ffe0:
May  4 09:46:06 deadfire3 kernel: [  155.021255] ffe0  52800021 97ffff5d a94153f3 a8c37bfd d65f03c0 a9ba7bfd 910003fd a90153f3
May  4 09:46:06 deadfire3 kernel: [  155.029837] 0000  a9025bf5 a90363f7 a9046bf9 f9002bfb aa0003fa 2a0103f5 9120e017 91212016
May  4 09:46:06 deadfire3 kernel: [  155.038407] 0020  9121601b aa1b03e0 9410778e f9441f40 d10d2013 f9400014 d10d2294 eb0002ff
May  4 09:46:06 deadfire3 kernel: [  155.046986] 0040  54000340 d2802019 d2804018 aa1303e0 2a1503e1 97ffb642 f941aa60 f941a662
May  4 09:46:06 deadfire3 kernel: [  155.055559] 0060  f9000440 f9000002 aa1903e0 f2a00200 f2fbd5a0 f901a660 aa1803e2 f2a00402
May  4 09:46:06 deadfire3 kernel: [  155.064127] 0080  f2fbd5a2 f901aa62 f941a680 d10d2001 910d2280 eb0002ff 54000080 aa1403f3
May  4 09:46:06 deadfire3 kernel: [  155.072701] 00a0  aa0103f4 17ffffea aa1b03e0 941077bc 91217358 aa1803e0 9410776a f9442740
May  4 09:46:06 deadfire3 kernel: [  155.081273] 00c0  d10d2013 f9400014 d10d2294 eb0002df 54000340 d2802019 d2804017 aa1303e0
May  4 09:46:06 deadfire3 kernel: [  155.089846]
May  4 09:46:06 deadfire3 kernel: [  155.089846] LR: 0xffffffc00074ffd8:
May  4 09:46:06 deadfire3 kernel: [  155.094880] ffd8  b8207a61 aa1303e0 52800021 97ffff5d a94153f3 a8c37bfd d65f03c0 a9ba7bfd
May  4 09:46:06 deadfire3 kernel: [  155.103462] fff8  910003fd a90153f3 a9025bf5 a90363f7 a9046bf9 f9002bfb aa0003fa 2a0103f5
May  4 09:46:06 deadfire3 kernel: [  155.112038] 0018  9120e017 91212016 9121601b aa1b03e0 9410778e f9441f40 d10d2013 f9400014
May  4 09:46:06 deadfire3 kernel: [  155.120618] 0038  d10d2294 eb0002ff 54000340 d2802019 d2804018 aa1303e0 2a1503e1 97ffb642
May  4 09:46:06 deadfire3 kernel: [  155.129188] 0058  f941aa60 f941a662 f9000440 f9000002 aa1903e0 f2a00200 f2fbd5a0 f901a660
May  4 09:46:06 deadfire3 kernel: [  155.137767] 0078  aa1803e2 f2a00402 f2fbd5a2 f901aa62 f941a680 d10d2001 910d2280 eb0002ff
May  4 09:46:06 deadfire3 kernel: [  155.146329] 0098  54000080 aa1403f3 aa0103f4 17ffffea aa1b03e0 941077bc 91217358 aa1803e0
May  4 09:46:06 deadfire3 kernel: [  155.154905] 00b8  9410776a f9442740 d10d2013 f9400014 d10d2294 eb0002df 54000340 d2802019
May  4 09:46:06 deadfire3 kernel: [  155.163481]
May  4 09:46:06 deadfire3 kernel: [  155.163481] SP: 0xffffffc0e0f63ad0:
May  4 09:46:06 deadfire3 kernel: [  155.168514] 3ad0  000ffdb8 dead0000 00000005 00000000 fc016408 ffffffc0 fc0163f8 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.177084] 3af0  00000200 00000000 00000100 00000000 fc015bc0 ffffffc0 fc016418 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.185660] 3b10  00000001 00000000 e0f63b50 ffffffc0 00750058 ffffffc0 e0f63b50 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.194251] 3b30  00750060 ffffffc0 20000145 00000000 00000005 00000000 fc016408 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.202827] 3b50  e0f63bb0 ffffffc0 00750370 ffffffc0 fc015bc0 ffffffc0 00000001 00000000
May  4 09:46:06 deadfire3 kernel: [  155.211390] 3b70  fc0161e8 ffffffc0 dc99b9c0 ffffffc0 00c31238 ffffffc0 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.219963] 3b90  00000000 00000000 e0f63d70 ffffffc0 dc9f21c0 ffffffc0 dc99b9c0 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.228551] 3bb0  e0f63bd0 ffffffc0 0073d5c4 ffffffc0 fc0161e8 ffffffc0 00000001 00000000
May  4 09:46:06 deadfire3 kernel: [  155.237149]
May  4 09:46:06 deadfire3 kernel: [  155.237149] X6: 0xffffffc001007018:
May  4 09:46:06 deadfire3 kernel: [  155.242185] 7018  656e203e 635f7478 3d6d6d6f 6e207325 5f747865 3d646970 6e206425 5f747865
May  4 09:46:06 deadfire3 kernel: [  155.250760] 7038  6f697270 0a64253d 00000000 00000000 6d6f682f 6b732f65 6f696479 69766e2f
May  4 09:46:06 deadfire3 kernel: [  155.259339] 7058  5f616964 6e72656b 692f6c65 756c636e 742f6564 65636172 6576652f 2f73746e
May  4 09:46:06 deadfire3 kernel: [  155.267919] 7078  65686373 00682e64 65686373 65665f64 72757461 00007365 005f4f4e 00000000
May  4 09:46:06 deadfire3 kernel: [  155.276510] 7098  6d6f682f 6b732f65 6f696479 69766e2f 5f616964 6e72656b 6b2f6c65 656e7265
May  4 09:46:06 deadfire3 kernel: [  155.285092] 70b8  63732f6c 2f646568 65726f63 0000632e 55424544 4f4c5f47 5f534b43 4e524157
May  4 09:46:06 deadfire3 kernel: [  155.293675] 70d8  284e4f5f 00297325 65727028 74706d65 756f635f 2928746e 30203c20 00000029
May  4 09:46:06 deadfire3 kernel: [  155.302251] 70f8  65727028 74706d65 756f635f 2928746e 50202620 4d454552 4d5f5450 294b5341
May  4 09:46:06 deadfire3 kernel: [  155.310836]
May  4 09:46:06 deadfire3 kernel: [  155.310836] X7: 0xffffffc01fe585f0:
May  4 09:46:06 deadfire3 kernel: [  155.315867] 85f0  ffffc74c 00000000 00000000 00000000 00000000 00000000 00000001 00000000
May  4 09:46:06 deadfire3 kernel: [  155.324447] 8610  0d927c65 00000024 473ab000 00006eab 0008f7f6 00000000 00000c00 00000000
May  4 09:46:06 deadfire3 kernel: [  155.333023] 8630  00000000 00000000 00003bb1 00000000 0003e3ab 00000000 00000c00 00000000
May  4 09:46:06 deadfire3 kernel: [  155.341599] 8650  00000000 00000000 00000003 00000003 055135ba 00000009 961304c7 00000006
May  4 09:46:06 deadfire3 kernel: [  155.350181] 8670  fd5d8e98 ffffffc0 ffde6c18 ffffffc0 fd671048 ffffffc0 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.358764] 8690  00000000 00000000 00000000 00000000 0000023d 00000000 00000138 00000000
May  4 09:46:06 deadfire3 kernel: [  155.367334] 86b0  00000059 00000000 000240da 00000000 00000000 00000000 000240d9 00000000
May  4 09:46:06 deadfire3 kernel: [  155.375915] 86d0  000001ac 00000000 00000191 00000000 00000c00 00000000 1fe585c0 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.384507]
May  4 09:46:06 deadfire3 kernel: [  155.384507] X8: 0xffffffc0fd6714a0:
May  4 09:46:06 deadfire3 kernel: [  155.389535] 14a0  75616c5f 0068636e 00000000 00000000 ef048640 ffffffc0 0000bc59 00000000
May  4 09:46:06 deadfire3 kernel: [  155.398120] 14c0  fffa6180 ffffffc0 fd671000 ffffffc0 fffa6180 ffffffc0 012005c0 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.406709] 14e0  00000000 00000000 012005c0 ffffffc0 012005c0 ffffffc0 013b04a0 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.415281] 1500  fb2903c0 ffffffc0 01460168 ffffffc0 e0f63880 ffffffc0 e0f63880 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.423848] 1520  00086ae0 ffffffc0 9ad796f0 0000007f 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.432424] 1540  00000000 40240000 00000000 00000000 00000000 40240000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.440998] 1560  00000000 00000000 00000000 40026000 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.449572] 1580  00000001 00000000 00000001 00000000 00000000 40000000 00000000 40000000
May  4 09:46:06 deadfire3 kernel: [  155.458155]
May  4 09:46:06 deadfire3 kernel: [  155.458155] X9: 0xffffffc0e0f63800:
May  4 09:46:06 deadfire3 kernel: [  155.463182] 3800  fc016418 ffffffc0 00000001 00000000 00ffef58 ffffffc0 00ffef68 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.471777] 3820  00000000 00000000 00324d08 00324d08 e0f63890 ffffffc0 000868c0 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.480361] 3840  ffffffff 00000000 e0f63a30 ffffffc0 00fff020 ffffffc0 0105ed28 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.488948] 3860  fd671000 ffffffc0 00000025 00000000 00000100 00000000 00390084 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.497538] 3880  00324d18 ffffffc0 00003958 ffffffc0 e0f638c0 ffffffc0 00089fc4 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.506118] 38a0  00000001 00000000 01001468 ffffffc0 e0f63a30 ffffffc0 e0f60000 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.514704] 38c0  e0f63900 ffffffc0 0008a0dc ffffffc0 e0f63a30 ffffffc0 e0f60000 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.523290] 38e0  96000044 00000000 01001468 ffffffc0 20000145 00000000 0008a0c8 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.531874]
May  4 09:46:06 deadfire3 kernel: [  155.531874] X10: 0xffffffc0e4941d40:
May  4 09:46:06 deadfire3 kernel: [  155.536991] 1d40  00000002 00000000 e4941d48 ffffffc0 e4941d48 ffffffc0 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.545572] 1d60  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.554143] 1d80  0126d148 ffffffc0 fa24a400 ffffffc0 e4941d88 ffffffc0 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.562716] 1da0  e48cbde0 ffffffc0 00000020 00000000 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.571285] 1dc0  ffffffff 0000ffff 00000000 00000000 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.579853] 1de0  42000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.588419] 1e00  00100100 dead0000 00200200 dead0000 00000000 00000000 d0b3c000 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.596990] 1e20  00000000 00000000 00000000 00000000 ffffffff 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.605574]
May  4 09:46:06 deadfire3 kernel: [  155.605574] X11: 0xffffffc0e4941d40:
May  4 09:46:06 deadfire3 kernel: [  155.610692] 1d40  00000002 00000000 e4941d48 ffffffc0 e4941d48 ffffffc0 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.619269] 1d60  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.627841] 1d80  0126d148 ffffffc0 fa24a400 ffffffc0 e4941d88 ffffffc0 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.636428] 1da0  e48cbde0 ffffffc0 00000020 00000000 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.645001] 1dc0  ffffffff 0000ffff 00000000 00000000 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.653582] 1de0  42000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.662161] 1e00  00100100 dead0000 00200200 dead0000 00000000 00000000 d0b3c000 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.670733] 1e20  00000000 00000000 00000000 00000000 ffffffff 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.679323]
May  4 09:46:06 deadfire3 kernel: [  155.679323] X19: 0xffffffc0fa22d780:
May  4 09:46:06 deadfire3 kernel: [  155.684440] d780  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.693015] d7a0  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.701577] d7c0  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.710146] d7e0  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.718711] d800  00000001 00000001 00000000 00000000 00000001 00000000 d5be3da0 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.727270] d820  ef9dd023 ffffffff 00000000 00000000 00000000 00000000 00000253 00000002
May  4 09:46:06 deadfire3 kernel: [  155.735843] d840  00000000 00000000 00000000 00000000 00000000 00000000 001c2000 001c2000
May  4 09:46:06 deadfire3 kernel: [  155.744417] d860  9991d000 0000007f e0f63ce8 ffffffc0 01014f70 ffffffc0 e0f63dd0 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.753002]
May  4 09:46:06 deadfire3 kernel: [  155.753002] X22: 0xffffffc0fc016388:
May  4 09:46:06 deadfire3 kernel: [  155.758116] 6388  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.766707] 63a8  00000000 00000000 00000000 00000000 00000000 00000000 001c2000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.775278] 63c8  00000000 00000000 00000000 00000000 00000000 00000000 00000001 00000000
May  4 09:46:06 deadfire3 kernel: [  155.783863] 63e8  00000000 00000000 fc001cc0 ffffffc0 fa22db48 ffffffc0 fa22db48 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.792433] 6408  fc016408 ffffffc0 fc016408 ffffffc0 36e836e7 025d025d 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.800998] 6428  00040004 00000000 fc016430 ffffffc0 fc016430 ffffffc0 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.809564] 6448  00040004 00000000 fc016450 ffffffc0 fc016450 ffffffc0 02980500 ffffff80
May  4 09:46:06 deadfire3 kernel: [  155.818136] 6468  00000000 00000000 00000000 00000000 00000040 00000001 00000001 00000001
May  4 09:46:06 deadfire3 kernel: [  155.826714]
May  4 09:46:06 deadfire3 kernel: [  155.826714] X23: 0xffffffc0fc016378:
May  4 09:46:06 deadfire3 kernel: [  155.831830] 6378  fc016370 ffffffc0 fc001cc0 ffffffc0 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.840410] 6398  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.848976] 63b8  00000000 00000000 001c2000 00000000 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.857560] 63d8  00000000 00000000 00000001 00000000 00000000 00000000 fc001cc0 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.866138] 63f8  fa22db48 ffffffc0 fa22db48 ffffffc0 fc016408 ffffffc0 fc016408 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.874703] 6418  36e836e7 025d025d 00000000 00000000 00040004 00000000 fc016430 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.883280] 6438  fc016430 ffffffc0 00000000 00000000 00040004 00000000 fc016450 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.891845] 6458  fc016450 ffffffc0 02980500 ffffff80 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.900425]
May  4 09:46:06 deadfire3 kernel: [  155.900425] X26: 0xffffffc0fc015b40:
May  4 09:46:06 deadfire3 kernel: [  155.905541] 5b40  00000040 00000001 00000001 00000001 00000002 00000000 00000001 00000000
May  4 09:46:06 deadfire3 kernel: [  155.914115] 5b60  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.922680] 5b80  00008119 00000000 00000000 00000000 fc33d740 ffffffc0 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.931261] 5ba0  00000000 00000000 00000000 00000000 00000004 00000000 012a83f0 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.939819] 5bc0  00000000 00000000 00000000 00000000 fd5cd958 ffffffc0 fc015298 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.948391] 5be0  fc0120e8 ffffffc0 00000004 00000000 fc015f20 ffffffc0 00010001 00000000
May  4 09:46:06 deadfire3 kernel: [  155.956960] 5c00  00000000 00000000 00000000 00010001 00010001 00000000 fc015fd0 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  155.965541] 5c20  fc001d40 ffffffc0 00000000 00000000 00000001 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.974130]
May  4 09:46:06 deadfire3 kernel: [  155.974130] X27: 0xffffffc0fc016398:
May  4 09:46:06 deadfire3 kernel: [  155.979245] 6398  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.987817] 63b8  00000000 00000000 001c2000 00000000 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  155.996395] 63d8  00000000 00000000 00000001 00000000 00000000 00000000 fc001cc0 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  156.004968] 63f8  fa22db48 ffffffc0 fa22db48 ffffffc0 fc016408 ffffffc0 fc016408 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  156.013536] 6418  36e836e7 025d025d 00000000 00000000 00040004 00000000 fc016430 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  156.022111] 6438  fc016430 ffffffc0 00000000 00000000 00040004 00000000 fc016450 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  156.030679] 6458  fc016450 ffffffc0 02980500 ffffff80 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  156.039260] 6478  00000040 00000001 00000001 00000001 00000004 00000000 00000001 00000254
May  4 09:46:06 deadfire3 kernel: [  156.047842]
May  4 09:46:06 deadfire3 kernel: [  156.047842] X29: 0xffffffc0e0f63ad0:
May  4 09:46:06 deadfire3 kernel: [  156.052960] 3ad0  000ffdb8 dead0000 00000005 00000000 fc016408 ffffffc0 fc0163f8 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  156.061554] 3af0  00000200 00000000 00000100 00000000 fc015bc0 ffffffc0 fc016418 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  156.070133] 3b10  00000001 00000000 e0f63b50 ffffffc0 00750058 ffffffc0 e0f63b50 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  156.078715] 3b30  00750060 ffffffc0 20000145 00000000 00000005 00000000 fc016408 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  156.087283] 3b50  e0f63bb0 ffffffc0 00750370 ffffffc0 fc015bc0 ffffffc0 00000001 00000000
May  4 09:46:06 deadfire3 kernel: [  156.095893] 3b70  fc0161e8 ffffffc0 dc99b9c0 ffffffc0 00c31238 ffffffc0 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  156.104465] 3b90  00000000 00000000 e0f63d70 ffffffc0 dc9f21c0 ffffffc0 dc99b9c0 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  156.113042] 3bb0  e0f63bd0 ffffffc0 0073d5c4 ffffffc0 fc0161e8 ffffffc0 00000001 00000000
May  4 09:46:06 deadfire3 kernel: [  156.121608]
May  4 09:46:06 deadfire3 kernel: [  156.123162] Process frontend_launch (pid: 1110, stack limit = 0xffffffc0e0f60058)
May  4 09:46:06 deadfire3 kernel: [  156.130723] Stack: (0xffffffc0e0f63b50 to 0xffffffc0e0f64000)
May  4 09:46:06 deadfire3 kernel: [  156.136546] 3b40:                                     e0f63bb0 ffffffc0 00750370 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  156.144814] 3b60: fc015bc0 ffffffc0 00000001 00000000 fc0161e8 ffffffc0 dc99b9c0 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  156.153077] 3b80: 00c31238 ffffffc0 00000000 00000000 00000000 00000000 e0f63d70 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  156.161343] 3ba0: dc9f21c0 ffffffc0 dc99b9c0 ffffffc0 e0f63bd0 ffffffc0 0073d5c4 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  156.169605] 3bc0: fc0161e8 ffffffc0 00000001 00000000 e0f63c00 ffffffc0 0073d848 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  156.177870] 3be0: fc0161e8 ffffffc0 00000001 00000000 012a72d0 ffffffc0 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  156.186133] 3c00: e0f63c20 ffffffc0 0073f028 ffffffc0 dc99b9c0 ffffffc0 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  156.194396] 3c20: e0f63c40 ffffffc0 00729bb4 ffffffc0 fc015bd0 ffffffc0 40045613 00000000
May  4 09:46:06 deadfire3 kernel: [  156.202657] 3c40: e0f63c50 ffffffc0 0072dda4 ffffffc0 e0f63ce0 ffffffc0 0072db10 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  156.210920] 3c60: 00000000 00000000 40045613 00000000 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  156.219184] 3c80: e0f63d70 ffffffc0 00000001 00000000 dcb13220 0000007f 00000004 00000000
May  4 09:46:06 deadfire3 kernel: [  156.227447] 3ca0: 00000004 00000000 dc99b9c0 ffffffc0 dc9f21c0 ffffffc0 dcb12f18 00000001
May  4 09:46:06 deadfire3 kernel: [  156.235710] 3cc0: 00000009 00000000 00000015 00000000 00000116 00000000 000000d3 00000000
May  4 09:46:06 deadfire3 kernel: [  156.243972] 3ce0: e0f63df0 ffffffc0 0072dc28 ffffffc0 fc015bd0 ffffffc0 fc015fe8 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  156.252234] 3d00: 40045613 00000000 ffffffed 00000000 dcb13220 0000007f dc99b9c0 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  156.260499] 3d20: 00000116 00000000 0000001d 00000000 01228000 ffffffc0 e0f60000 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  156.268760] 3d40: 00518b00 00000000 0072dc30 ffffffc0 e0f63da0 ffffffc0 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  156.277022] 3d60: 00000000 00000000 00000000 00000000 00000001 ffffffc0 00000002 00000000
May  4 09:46:06 deadfire3 kernel: [  156.285283] 3d80: faf535d0 ffffffc0 00000001 00000000 faf535c0 ffffffc0 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  156.293548] 3da0: 2d1f0002 434cffef 00000000 00000000 e041f280 ffffffc0 00000005 00000000
May  4 09:46:06 deadfire3 kernel: [  156.301813] 3dc0: e0f63df0 ffffffc0 009ab6a8 ffffffc0 e0f63de0 ffffffc0 00b6b5f0 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  156.310078] 3de0: e0f63e00 ffffffc0 0072897c ffffffc0 e0f63e00 ffffffc0 007289a4 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  156.318342] 3e00: e0f63e40 ffffffc0 001be4c4 ffffffc0 dcb13220 0000007f fd6d2380 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  156.326608] 3e20: 00000018 00000000 dcb13220 0000007f 40045613 00000000 00000001 00000000
May  4 09:46:06 deadfire3 kernel: [  156.334872] 3e40: e0f63e50 ffffffc0 001bf194 ffffffc0 e0f63e80 ffffffc0 001bf274 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  156.343132] 3e60: dc99b9c0 ffffffc0 00000000 00000000 e0f63e80 ffffffc0 001bf258 ffffffc0
May  4 09:46:06 deadfire3 kernel: [  156.351390] 3e80: dcb13160 0000007f 000853c8 ffffffc0 dcb13230 0000007f dcb13230 0000007f
May  4 09:46:06 deadfire3 kernel: [  156.359649] 3ea0: ffffffff ffffffff 9b2c210c 0000007f 20000000 00000000 00000015 00000000
May  4 09:46:06 deadfire3 kernel: [  156.367908] 3ec0: 80000000 00000000 00001148 00000001 00000018 00000000 40045613 00000000
May  4 09:46:06 deadfire3 kernel: [  156.376168] 3ee0: dcb13220 0000007f dcb13220 0000007f dcb13108 0000007f 00000002 00000000
May  4 09:46:06 deadfire3 kernel: [  156.384427] 3f00: 004a6d08 00000000 49444956 535f434f 0000001d 00000000 fefefeff fefefefe
May  4 09:46:06 deadfire3 kernel: [  156.392686] 3f20: 7f7f7f7f 7f7f7f7f 01010101 01010101 00000000 00000000 e8000000 00000003
May  4 09:46:06 deadfire3 kernel: [  156.400945] 3f40: 00000000 00000000 9b346588 0000007f 9a50b310 0000007f 9b2c2100 0000007f
May  4 09:46:06 deadfire3 kernel: [  156.409205] 3f60: dcb123f8 0000007f dcb13230 0000007f dcb13230 0000007f 00422610 00000000
May  4 09:46:06 deadfire3 kernel: [  156.417464] 3f80: dcb13300 0000007f dcb13c50 0000007f 9a530000 0000007f dcb13320 0000007f
May  4 09:46:06 deadfire3 kernel: [  156.425724] 3fa0: 0040f3b0 00000000 0040f3e0 00000000 dcb13310 0000007f dcb13160 0000007f
May  4 09:46:06 deadfire3 kernel: [  156.433981] 3fc0: 9a4ebaec 0000007f dcb13160 0000007f 9b2c210c 0000007f 20000000 00000000
May  4 09:46:06 deadfire3 kernel: [  156.442241] 3fe0: 00000018 00000000 0000001d 00000000 00000000 00000000 00000000 00000000
May  4 09:46:06 deadfire3 kernel: [  156.450479] Call trace:
May  4 09:46:06 deadfire3 kernel: [  156.453001] [<ffffffc000750060>] tegra_channel_queued_buf_done+0x6c/0x168
May  4 09:46:06 deadfire3 kernel: [  156.459866] [<ffffffc000750370>] tegra_channel_stop_streaming+0x54/0xc8
May  4 09:46:06 deadfire3 kernel: [  156.466560] [<ffffffc00073d5c4>] __vb2_queue_cancel+0x30/0xa8
May  4 09:46:06 deadfire3 kernel: [  156.472380] [<ffffffc00073d848>] vb2_streamoff+0xac/0x124
May  4 09:46:06 deadfire3 kernel: [  156.477846] [<ffffffc00073f028>] vb2_ioctl_streamoff+0x44/0x50
May  4 09:46:06 deadfire3 kernel: [  156.483751] [<ffffffc000729bb4>] v4l_streamoff+0x1c/0x24
May  4 09:46:06 deadfire3 kernel: [  156.489129] [<ffffffc00072dda4>] __video_do_ioctl+0x174/0x284
May  4 09:46:06 deadfire3 kernel: [  156.494940] [<ffffffc00072db10>] video_usercopy+0x1e4/0x2e8
May  4 09:46:06 deadfire3 kernel: [  156.500576] [<ffffffc00072dc28>] video_ioctl2+0x14/0x1c
May  4 09:46:06 deadfire3 kernel: [  156.505870] [<ffffffc0007289a4>] v4l2_ioctl+0x70/0x134
May  4 09:46:06 deadfire3 kernel: [  156.511082] [<ffffffc0001be4c4>] vfs_ioctl+0x1c/0x44
May  4 09:46:06 deadfire3 kernel: [  156.516120] [<ffffffc0001bf194>] do_vfs_ioctl+0x220/0x22c
May  4 09:46:06 deadfire3 kernel: [  156.521598] [<ffffffc0001bf274>] SyS_ioctl+0xd4/0x17c
May  4 09:46:06 deadfire3 kernel: [  156.526723] Code: 2a1503e1 97ffb642 f941aa60 f941a662 (f9000440)
May  4 09:46:06 deadfire3 kernel: [  156.539082] ---[ end trace 1cec99130188edfd ]---

Background

Hypothesis

Solution

Failure points

Program flow

Life of a buffer

Capture thread

Release thread

Frame Buffers

Possible races

Some notes on kernel code

Freezing of tasks

Sleeping

Completion

Spin Locks

List Operations

Channel State

Error traces

Userspace thread

Comments

Josh Bialkowski credits