Re: [PATCH v5 0/5] iommu: Retire detach_dev callback

[Steven Price <steven.price@arm.com>]

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On 10/01/2023 02:54, Lu Baolu wrote:
> Hi folks,
> 
> The iommu core calls the driver's detach_dev domain op callback only when
> a device is finished assigning to user space and
> iommu_group_release_dma_owner() is called to return the device to the
> kernel, where iommu core wants to set the default domain to the device but
> the driver didn't provide one. The code looks like:
> 
>         /*
>          * New drivers should support default domains and so the detach_dev() op
>          * will never be called. Otherwise the NULL domain represents some
>          * platform specific behavior.
>          */
>         if (!new_domain) {
>                 if (WARN_ON(!group->domain->ops->detach_dev))
>                         return -EINVAL;
>                 __iommu_group_for_each_dev(group, group->domain,
>                                            iommu_group_do_detach_device);
>                 group->domain = NULL;
>                 return 0;
>         }
> 
> In other words, if the iommu driver provides default domains, the
> .detach_dev callback will never be called; Otherwise, the .detach_dev
> callback is actually called to return control back to the platform DMA
> ops, other than detaching the domain from device.
> 
> This series cleanups this by:
> 
> - If the IOMMU driver provides default domains, remove .detach_dev
>   callback.
> - Adds a new set_platform_dma iommu op. Any IOMMU driver that doesn't
>   provide default domain should implement set_platform_dma callback
>   instead.
> - Retire .detach_dev callback.
> 
> This series originates from various discussion in the community. Thanks
> to Jason, Robin and all others for their ideas.
> 
> The whole series is available on github:
> https://github.com/LuBaolu/intel-iommu/commits/iommu-retire-detach_dev-v5
> 
> Change log:
> v5:
>  - Merge some patches to make the series cute. No functionality changes.
>  - Check the op directly and WARN_ON the lack of any necessary
>    callbacks. Get rid of the ret and EINVAL.
> 
> v4:
>  - https://lore.kernel.org/linux-iommu/20230104125725.271850-1-baolu.lu@linux.intel.com/
>  - Drop the patch which renamed .attach_dev to .set_dev. As Robin said,
>    "... I also wouldn't say that "attach" loses its meaning in a context
>    where an equivalent "detach" operation is only ever implicit in 
>    reattaching to something else...". If we have a better name in the
>    future, we can do it in other series.
>  - Adjust the patch of "iommu: Add set_platform_dma_ops iommu ops"
>    according to Jason's following suggestion " ... This is a bit ugly,
>    it would be better to make the previous patch call set_platform_dma
>    if it is set instead of detach_dev and then these patches should just
>    rename the driver's fsl_pamu_detach_device to
>    fsl_pamu_set_platform_dma ..."
>  - Add a new patch to remove deferred attach check from
>    __iommu_detach_domain() path. Make it a separate patch as the
>    prerequisite to remove __iommu_detach_device() helper.
>  - Rename set_platform_dma to set_platform_dma_ops to make it more
>    meaningful.
> 
> v3:
>  - https://lore.kernel.org/linux-iommu/20221128064648.1934720-1-baolu.lu@linux.intel.com/
>  - Setting blocking domain is not conceptually equal to detach_dev.
>    Dropped all blocking domain related staffs in the previous version.
> 
> v2:
>  - https://lore.kernel.org/linux-iommu/20220826123014.52709-1-baolu.lu@linux.intel.com/
>  - Replace .detach_dev callback with static block domain ops;
>  - Rename .attach_dev to .set_dev.
> 
> v1:
>  - https://lore.kernel.org/linux-iommu/20220516015759.2952771-1-baolu.lu@linux.intel.com/
> 
> Jason Gunthorpe (1):
>   iommu: Remove deferred attach check from __iommu_detach_device()
> 
> Lu Baolu (4):
>   iommu: Remove detach_dev callbacks
>   iommu: Add set_platform_dma_ops iommu ops
>   iommu: Add set_platform_dma_ops callbacks
>   iommu: Remove detach_dev callback
> 
>  include/linux/iommu.h                   |  8 ++-
>  include/trace/events/iommu.h            |  7 --
>  drivers/iommu/amd/iommu.c               | 26 -------
>  drivers/iommu/apple-dart.c              | 24 -------
>  drivers/iommu/arm/arm-smmu/qcom_iommu.c | 23 ------
>  drivers/iommu/exynos-iommu.c            |  1 -
>  drivers/iommu/fsl_pamu_domain.c         |  6 +-
>  drivers/iommu/iommu-traces.c            |  1 -
>  drivers/iommu/iommu.c                   | 94 ++++++++++++-------------
>  drivers/iommu/ipmmu-vmsa.c              | 16 -----
>  drivers/iommu/msm_iommu.c               |  6 +-
>  drivers/iommu/mtk_iommu.c               |  9 ---
>  drivers/iommu/mtk_iommu_v1.c            |  4 +-
>  drivers/iommu/omap-iommu.c              |  6 +-
>  drivers/iommu/rockchip-iommu.c          |  1 -
>  drivers/iommu/s390-iommu.c              |  7 +-
>  drivers/iommu/sprd-iommu.c              | 16 -----
>  drivers/iommu/sun50i-iommu.c            |  1 -
>  drivers/iommu/tegra-gart.c              |  6 +-
>  drivers/iommu/tegra-smmu.c              |  5 +-
>  20 files changed, 69 insertions(+), 198 deletions(-)
> 

I hit a problem with this series on a Firefly-RK3288, I bisected down to
1b932ceddd19 ("iommu: Remove detach_dev callbacks"). The first splat is:

[    7.227853] ------------[ cut here ]------------
[    7.227900] WARNING: CPU: 0 PID: 9 at drivers/iommu/iommu.c:2198 __iommu_group_set_domain+0xb4/0xc8
[    7.227920] Modules linked in:
[    7.227935] CPU: 0 PID: 9 Comm: kworker/u8:0 Not tainted 6.3.0-rc1 #1
[    7.227942] Hardware name: Rockchip (Device Tree)
[    7.227948] Workqueue: events_unbound deferred_probe_work_func
[    7.227964]  unwind_backtrace from show_stack+0x10/0x14
[    7.227978]  show_stack from dump_stack_lvl+0x58/0x70
[    7.227992]  dump_stack_lvl from __warn+0x7c/0x1dc
[    7.228008]  __warn from warn_slowpath_fmt+0xbc/0x1a0
[    7.228022]  warn_slowpath_fmt from __iommu_group_set_domain+0xb4/0xc8
[    7.228035]  __iommu_group_set_domain from iommu_detach_device+0x84/0xf8
[    7.228046]  iommu_detach_device from arm_iommu_detach_device+0x24/0xc4
[    7.228057]  arm_iommu_detach_device from rockchip_drm_dma_attach_device+0x30/0x74
[    7.228073]  rockchip_drm_dma_attach_device from vop_crtc_atomic_enable+0xf8/0xab0
[    7.228085]  vop_crtc_atomic_enable from drm_atomic_helper_commit_modeset_enables+0xb0/0x2a0
[    7.228097]  drm_atomic_helper_commit_modeset_enables from drm_atomic_helper_commit_tail_rpm+0x44/0x8c
[    7.228111]  drm_atomic_helper_commit_tail_rpm from commit_tail+0x9c/0x184
[    7.228124]  commit_tail from drm_atomic_helper_commit+0x164/0x18c
[    7.228137]  drm_atomic_helper_commit from drm_atomic_commit+0xb0/0xe8
[    7.228153]  drm_atomic_commit from drm_client_modeset_commit_atomic+0x240/0x288
[    7.228166]  drm_client_modeset_commit_atomic from drm_client_modeset_commit_locked+0x60/0x1cc
[    7.228174]  drm_client_modeset_commit_locked from drm_client_modeset_commit+0x24/0x40
[    7.228183]  drm_client_modeset_commit from drm_fb_helper_set_par+0xb8/0xf8
[    7.228197]  drm_fb_helper_set_par from fbcon_init+0x2a0/0x534
[    7.228211]  fbcon_init from visual_init+0xc0/0x108
[    7.228224]  visual_init from do_bind_con_driver+0x1bc/0x3a8
[    7.228237]  do_bind_con_driver from do_take_over_console+0x134/0x1d4
[    7.228251]  do_take_over_console from do_fbcon_takeover+0x6c/0xcc
[    7.228264]  do_fbcon_takeover from fbcon_fb_registered+0x198/0x1a8
[    7.228277]  fbcon_fb_registered from register_framebuffer+0x1d0/0x268
[    7.228292]  register_framebuffer from __drm_fb_helper_initial_config_and_unlock+0x358/0x578
[    7.228308]  __drm_fb_helper_initial_config_and_unlock from drm_fbdev_client_hotplug+0x6c/0xa8
[    7.228322]  drm_fbdev_client_hotplug from drm_fbdev_generic_setup+0x84/0x174
[    7.228335]  drm_fbdev_generic_setup from rockchip_drm_bind+0x1dc/0x200
[    7.228349]  rockchip_drm_bind from try_to_bring_up_aggregate_device+0x200/0x2d8
[    7.228368]  try_to_bring_up_aggregate_device from component_master_add_with_match+0xc4/0xf8
[    7.228380]  component_master_add_with_match from rockchip_drm_platform_probe+0x150/0x254
[    7.228392]  rockchip_drm_platform_probe from platform_probe+0x5c/0xb8
[    7.228405]  platform_probe from really_probe+0xe0/0x400
[    7.228417]  really_probe from __driver_probe_device+0x9c/0x1fc
[    7.228431]  __driver_probe_device from driver_probe_device+0x30/0xc0
[    7.228445]  driver_probe_device from __device_attach_driver+0xa8/0x120
[    7.228460]  __device_attach_driver from bus_for_each_drv+0x84/0xdc
[    7.228474]  bus_for_each_drv from __device_attach+0xb0/0x20c
[    7.228488]  __device_attach from bus_probe_device+0x8c/0x90
[    7.228502]  bus_probe_device from deferred_probe_work_func+0x98/0xe0
[    7.228515]  deferred_probe_work_func from process_one_work+0x290/0x740
[    7.228528]  process_one_work from worker_thread+0x54/0x518
[    7.228536]  worker_thread from kthread+0xf0/0x110
[    7.228548]  kthread from ret_from_fork+0x14/0x2c
[    7.228561] Exception stack(0xf084dfb0 to 0xf084dff8)
[    7.228567] dfa0:                                     00000000 00000000 00000000 00000000
[    7.228573] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    7.228579] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000
[    7.228585] irq event stamp: 138379
[    7.228592] hardirqs last  enabled at (138385): [<c03c42ac>] vprintk_emit+0x330/0x354
[    7.228606] hardirqs last disabled at (138390): [<c03c4268>] vprintk_emit+0x2ec/0x354
[    7.228617] softirqs last  enabled at (137258): [<c03016ac>] __do_softirq+0x2f8/0x548
[    7.228628] softirqs last disabled at (137253): [<c0350218>] __irq_exit_rcu+0x14c/0x170
[    7.228639] ---[ end trace 0000000000000000 ]---

(complete log attached)

I'm not sure how to debug this. From the callstack I can see that
__iommu_group_set_domain is getting a NULL new_domain which triggers
a call to __iommu_group_do_set_platform_dma which is WARNing because
there is no set_platform_dma_ops callback. The NULL new_domain is
because group->default_domain is NULL in __iommu_group_set_core_domain.

So is the logic in the first patch that there is a default domain
incorrect for this rockchip driver? Or is this callpath just hitting
the function before the default domain can be created?

Help debugging this would be appreciated - I'm not very familiar
with this area of code.

Thanks,

Steve

[-- Attachment #2: bootlog.txt --]
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[    0.000000] Booting Linux on physical CPU 0x500
[    0.000000] Linux version 6.3.0-rc1 (stepri01@e112269-lin) (arm-linux-gnueabihf-gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2) #1 SMP Wed Mar 15 15:23:50 GMT 2023
[    0.000000] CPU: ARMv7 Processor [410fc0d1] revision 1 (ARMv7), cr=10c5387d
[    0.000000] CPU: div instructions available: patching division code
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] OF: fdt: Machine model: Firefly-RK3288
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] OF: reserved mem: 0xfe000000..0xfeffffff (16384 KiB) map non-reusable dma-unusable@fe000000
[    0.000000] cma: Reserved 64 MiB at 0x7c000000
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x0000000000000000-0x000000002fffffff]
[    0.000000]   Normal   empty
[    0.000000]   HighMem  [mem 0x0000000030000000-0x000000007fffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000000000-0x000000007fffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x000000007fffffff]
[    0.000000] percpu: Embedded 17 pages/cpu s38772 r8192 d22668 u69632
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 522752
[    0.000000] Kernel command line: console=ttyS2,115200 root=/dev/nfs nfsroot=10.1.194.34:/export/root-fs,vers=4,tcp ip=dhcp rw rootwait consoleblank=0
[    0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes, linear)
[    0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes, linear)
[    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[    0.000000] stackdepot: allocating hash table via alloc_large_system_hash
[    0.000000] stackdepot hash table entries: 65536 (order: 6, 262144 bytes, linear)
[    0.000000] Memory: 1974640K/2097152K available (16384K kernel code, 2563K rwdata, 8164K rodata, 2048K init, 8838K bss, 56976K reserved, 65536K cma-reserved, 1245184K highmem)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[    0.000000] trace event string verifier disabled
[    0.000000] Running RCU self tests
[    0.000000] Running RCU synchronous self tests
[    0.000000] rcu: Hierarchical RCU implementation.
[    0.000000] rcu: 	RCU event tracing is enabled.
[    0.000000] rcu: 	RCU lockdep checking is enabled.
[    0.000000] rcu: 	RCU restricting CPUs from NR_CPUS=16 to nr_cpu_ids=4.
[    0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
[    0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=4
[    0.000000] Running RCU synchronous self tests
[    0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[    0.000000] rcu: srcu_init: Setting srcu_struct sizes based on contention.
[    0.000000] arch_timer: cp15 timer(s) running at 24.00MHz (phys).
[    0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x588fe9dc0, max_idle_ns: 440795202592 ns
[    0.000001] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps every 4398046511097ns
[    0.000029] Switching to timer-based delay loop, resolution 41ns
[    0.008875] Console: colour dummy device 80x30
[    0.009012] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
[    0.009026] ... MAX_LOCKDEP_SUBCLASSES:  8
[    0.009039] ... MAX_LOCK_DEPTH:          48
[    0.009051] ... MAX_LOCKDEP_KEYS:        8192
[    0.009062] ... CLASSHASH_SIZE:          4096
[    0.009074] ... MAX_LOCKDEP_ENTRIES:     32768
[    0.009085] ... MAX_LOCKDEP_CHAINS:      65536
[    0.009097] ... CHAINHASH_SIZE:          32768
[    0.009108]  memory used by lock dependency info: 4061 kB
[    0.009120]  memory used for stack traces: 2112 kB
[    0.009131]  per task-struct memory footprint: 1536 bytes
[    0.009353] Calibrating delay loop (skipped), value calculated using timer frequency.. 48.00 BogoMIPS (lpj=240000)
[    0.009390] pid_max: default: 32768 minimum: 301
[    0.010959] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes, linear)
[    0.011000] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes, linear)
[    0.016955] CPU: Testing write buffer coherency: ok
[    0.017251] CPU0: Spectre v2: using BPIALL workaround
[    0.017271] Running RCU synchronous self tests
[    0.017296] Running RCU synchronous self tests
[    0.019224] CPU0: thread -1, cpu 0, socket 5, mpidr 80000500
[    0.026223] Setting up static identity map for 0x300000 - 0x3000ac
[    0.029327] rcu: Hierarchical SRCU implementation.
[    0.029347] rcu: 	Max phase no-delay instances is 1000.
[    0.049995] smp: Bringing up secondary CPUs ...
[    0.057012] CPU1: thread -1, cpu 1, socket 5, mpidr 80000501
[    0.057039] CPU1: Spectre v2: using BPIALL workaround
[    0.063763] CPU2: thread -1, cpu 2, socket 5, mpidr 80000502
[    0.063790] CPU2: Spectre v2: using BPIALL workaround
[    0.069461] CPU3: thread -1, cpu 3, socket 5, mpidr 80000503
[    0.069488] CPU3: Spectre v2: using BPIALL workaround
[    0.070149] smp: Brought up 1 node, 4 CPUs
[    0.070178] SMP: Total of 4 processors activated (192.00 BogoMIPS).
[    0.070201] CPU: All CPU(s) started in SVC mode.
[    0.076141] devtmpfs: initialized
[    0.216061] VFP support v0.3: implementor 41 architecture 3 part 30 variant d rev 0
[    0.218303] Running RCU synchronous self tests
[    0.218498] Running RCU synchronous self tests
[    0.219983] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.220076] futex hash table entries: 1024 (order: 4, 65536 bytes, linear)
[    0.223789] pinctrl core: initialized pinctrl subsystem
[    0.244007] NET: Registered PF_NETLINK/PF_ROUTE protocol family
[    0.254956] DMA: preallocated 256 KiB pool for atomic coherent allocations
[    0.276590] thermal_sys: Registered thermal governor 'step_wise'
[    0.279749] cpuidle: using governor menu
[    0.281984] No ATAGs?
[    0.282669] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[    0.282726] hw-breakpoint: maximum watchpoint size is 4 bytes.
[    0.297778] Serial: AMBA PL011 UART driver
[    0.413760] platform ff980000.hdmi: Fixed dependency cycle(s) with /vop@ff940000/port/endpoint@0
[    0.413997] platform ff980000.hdmi: Fixed dependency cycle(s) with /vop@ff930000/port/endpoint@0
[    0.497815] gpio gpiochip0: Static allocation of GPIO base is deprecated, use dynamic allocation.
[    0.501418] rockchip-gpio ff750000.gpio: probed /pinctrl/gpio@ff750000
[    0.504556] gpio gpiochip1: Static allocation of GPIO base is deprecated, use dynamic allocation.
[    0.505998] rockchip-gpio ff780000.gpio: probed /pinctrl/gpio@ff780000
[    0.508938] gpio gpiochip2: Static allocation of GPIO base is deprecated, use dynamic allocation.
[    0.510268] rockchip-gpio ff790000.gpio: probed /pinctrl/gpio@ff790000
[    0.513244] gpio gpiochip3: Static allocation of GPIO base is deprecated, use dynamic allocation.
[    0.515413] rockchip-gpio ff7a0000.gpio: probed /pinctrl/gpio@ff7a0000
[    0.519859] gpio gpiochip4: Static allocation of GPIO base is deprecated, use dynamic allocation.
[    0.522318] rockchip-gpio ff7b0000.gpio: probed /pinctrl/gpio@ff7b0000
[    0.525524] gpio gpiochip5: Static allocation of GPIO base is deprecated, use dynamic allocation.
[    0.526978] rockchip-gpio ff7c0000.gpio: probed /pinctrl/gpio@ff7c0000
[    0.530174] gpio gpiochip6: Static allocation of GPIO base is deprecated, use dynamic allocation.
[    0.531650] rockchip-gpio ff7d0000.gpio: probed /pinctrl/gpio@ff7d0000
[    0.536246] gpio gpiochip7: Static allocation of GPIO base is deprecated, use dynamic allocation.
[    0.537772] rockchip-gpio ff7e0000.gpio: probed /pinctrl/gpio@ff7e0000
[    0.541421] gpio gpiochip8: Static allocation of GPIO base is deprecated, use dynamic allocation.
[    0.542907] rockchip-gpio ff7f0000.gpio: probed /pinctrl/gpio@ff7f0000
[    0.664233] iommu: Default domain type: Translated 
[    0.664256] iommu: DMA domain TLB invalidation policy: strict mode 
[    0.673131] SCSI subsystem initialized
[    0.676786] usbcore: registered new interface driver usbfs
[    0.677199] usbcore: registered new interface driver hub
[    0.677599] usbcore: registered new device driver usb
[    0.685798] pps_core: LinuxPPS API ver. 1 registered
[    0.685820] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    0.685982] PTP clock support registered
[    0.689757] scmi_core: SCMI protocol bus registered
[    0.706081] vgaarb: loaded
[    2.231396] clocksource: Switched to clocksource arch_sys_counter
[    2.316703] NET: Registered PF_INET protocol family
[    2.317523] IP idents hash table entries: 16384 (order: 5, 131072 bytes, linear)
[    2.322008] tcp_listen_portaddr_hash hash table entries: 512 (order: 2, 20480 bytes, linear)
[    2.322166] Table-perturb hash table entries: 65536 (order: 6, 262144 bytes, linear)
[    2.322242] TCP established hash table entries: 8192 (order: 3, 32768 bytes, linear)
[    2.322723] TCP bind hash table entries: 8192 (order: 7, 655360 bytes, linear)
[    2.326102] TCP: Hash tables configured (established 8192 bind 8192)
[    2.326787] UDP hash table entries: 512 (order: 3, 49152 bytes, linear)
[    2.327103] UDP-Lite hash table entries: 512 (order: 3, 49152 bytes, linear)
[    2.328248] NET: Registered PF_UNIX/PF_LOCAL protocol family
[    2.333607] RPC: Registered named UNIX socket transport module.
[    2.333662] RPC: Registered udp transport module.
[    2.333682] RPC: Registered tcp transport module.
[    2.333701] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    2.333737] PCI: CLS 0 bytes, default 64
[    2.907256] hw perfevents: enabled with armv7_cortex_a12 PMU driver, 7 counters available
[    2.920408] Initialise system trusted keyrings
[    2.921755] workingset: timestamp_bits=30 max_order=19 bucket_order=0
[    2.926993] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    2.929892] NFS: Registering the id_resolver key type
[    2.930113] Key type id_resolver registered
[    2.930164] Key type id_legacy registered
[    2.930433] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[    2.930534] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering...
[    2.932429] Key type asymmetric registered
[    2.932545] Asymmetric key parser 'x509' registered
[    2.933430] bounce: pool size: 64 pages
[    2.933892] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 248)
[    2.933998] io scheduler mq-deadline registered
[    2.934026] io scheduler kyber registered
[    2.934214] io scheduler bfq registered
[    3.142461] dma-pl330 ff250000.dma-controller: Loaded driver for PL330 DMAC-241330
[    3.142494] dma-pl330 ff250000.dma-controller: 	DBUFF-128x8bytes Num_Chans-8 Num_Peri-20 Num_Events-16
[    3.151849] dma-pl330 ffb20000.dma-controller: Loaded driver for PL330 DMAC-241330
[    3.151880] dma-pl330 ffb20000.dma-controller: 	DBUFF-64x8bytes Num_Chans-5 Num_Peri-6 Num_Events-10
[    3.672388] Serial: 8250/16550 driver, 5 ports, IRQ sharing enabled
[    3.701850] ff180000.serial: ttyS0 at MMIO 0xff180000 (irq = 47, base_baud = 1500000) is a 16550A
[    3.713471] ff190000.serial: ttyS1 at MMIO 0xff190000 (irq = 48, base_baud = 1500000) is a 16550A
[    3.724188] ff690000.serial: ttyS2 at MMIO 0xff690000 (irq = 49, base_baud = 1500000) is a 16550A
[    3.725100] printk: console [ttyS2] enabled
[    4.883174] ff1b0000.serial: ttyS3 at MMIO 0xff1b0000 (irq = 50, base_baud = 1500000) is a 16550A
[    4.906393] SuperH (H)SCI(F) driver initialized
[    4.917153] msm_serial: driver initialized
[    4.921839] STMicroelectronics ASC driver initialized
[    4.933244] STM32 USART driver initialized
[    4.978503] rockchip-vop ff930000.vop: Adding to iommu group 0
[    4.988866] rockchip-vop ff940000.vop: Adding to iommu group 1
[    5.017116] rockchip-drm display-subsystem: bound ff930000.vop (ops vop_component_ops)
[    5.028500] rockchip-drm display-subsystem: bound ff940000.vop (ops vop_component_ops)
[    5.038287] dwhdmi-rockchip ff980000.hdmi: supply avdd-0v9 not found, using dummy regulator
[    5.050040] dwhdmi-rockchip ff980000.hdmi: supply avdd-1v8 not found, using dummy regulator
[    5.166130] brd: module loaded
[    5.239189] loop: module loaded
[    5.328714] CAN device driver interface
[    5.337879] bgmac_bcma: Broadcom 47xx GBit MAC driver loaded
[    5.350032] e1000e: Intel(R) PRO/1000 Network Driver
[    5.355698] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
[    5.362738] igb: Intel(R) Gigabit Ethernet Network Driver
[    5.368807] igb: Copyright (c) 2007-2014 Intel Corporation.
[    5.399131] pegasus: Pegasus/Pegasus II USB Ethernet driver
[    5.405747] usbcore: registered new interface driver pegasus
[    5.412492] usbcore: registered new interface driver asix
[    5.418856] usbcore: registered new interface driver ax88179_178a
[    5.426070] usbcore: registered new interface driver cdc_ether
[    5.432996] usbcore: registered new interface driver smsc75xx
[    5.439756] usbcore: registered new interface driver smsc95xx
[    5.446562] usbcore: registered new interface driver net1080
[    5.453284] usbcore: registered new interface driver cdc_subset
[    5.460232] usbcore: registered new interface driver zaurus
[    5.466881] usbcore: registered new interface driver cdc_ncm
[    5.473627] usbcore: registered new interface driver r8153_ecm
[    5.492283] dwc2 ff540000.usb: supply vusb_d not found, using dummy regulator
[    5.501797] dwc2 ff540000.usb: supply vusb_a not found, using dummy regulator
[    5.582878] dwc2 ff540000.usb: DWC OTG Controller
[    5.589070] dwc2 ff540000.usb: new USB bus registered, assigned bus number 1
[    5.597414] dwc2 ff540000.usb: irq 54, io mem 0xff540000
[    5.614258] hub 1-0:1.0: USB hub found
[    5.619130] hub 1-0:1.0: 1 port detected
[    5.632400] dwc2 ff580000.usb: supply vusb_d not found, using dummy regulator
[    5.642350] dwc2 ff580000.usb: supply vusb_a not found, using dummy regulator
[    5.791720] dwc2 ff580000.usb: EPs: 10, dedicated fifos, 972 entries in SPRAM
[    5.802858] dwc2 ff580000.usb: DWC OTG Controller
[    5.808320] dwc2 ff580000.usb: new USB bus registered, assigned bus number 2
[    5.816499] dwc2 ff580000.usb: irq 55, io mem 0xff580000
[    5.829077] hub 2-0:1.0: USB hub found
[    5.833780] hub 2-0:1.0: 1 port detected
[    5.859849] usbcore: registered new interface driver usb-storage
[    5.898560] i2c_dev: i2c /dev entries driver
[    5.935128] fan53555-regulator 0-0040: FAN53555 Option[8] Rev[1] Detected!
[    5.953063] fan53555-regulator 0-0041: FAN53555 Option[8] Rev[1] Detected!
[    5.969323] i2c 0-005a: Fixed dependency cycle(s) with /i2c@ff650000/act8846@5a/regulators/REG4
[    6.006658] vcca_18: Bringing 3300000uV into 1800000-1800000uV
[    6.114025] dw_wdt ff800000.watchdog: No valid TOPs array specified
[    6.170777] cpufreq: cpufreq_online: CPU0: Running at unlisted initial frequency: 500000 KHz, changing to: 600000 KHz
[    6.195226] sdhci: Secure Digital Host Controller Interface driver
[    6.202228] sdhci: Copyright(c) Pierre Ossman
[    6.214956] Synopsys Designware Multimedia Card Interface Driver
[    6.226942] dwmmc_rockchip ff0d0000.mmc: IDMAC supports 32-bit address mode.
[    6.228618] sdhci-pltfm: SDHCI platform and OF driver helper
[    6.258238] dwmmc_rockchip ff0d0000.mmc: Using internal DMA controller.
[    6.265719] dwmmc_rockchip ff0d0000.mmc: Version ID is 270a
[    6.272169] dwmmc_rockchip ff0d0000.mmc: DW MMC controller at irq 63,32 bit host data width,256 deep fifo
[    6.284539] ledtrig-cpu: registered to indicate activity on CPUs
[    6.291687] dwmmc_rockchip ff0d0000.mmc: Failed getting OCR mask: 0
[    6.293330] usbcore: registered new interface driver usbhid
[    6.298836] mmc_host mmc0: card is non-removable.
[    6.305119] usbhid: USB HID core driver
[    6.310877] dwmmc_rockchip ff0d0000.mmc: could not set regulator OCR (-22)
[    6.322233] dwmmc_rockchip ff0d0000.mmc: failed to enable vmmc regulator
[    6.324503] NET: Registered PF_INET6 protocol family
[    6.337580] Segment Routing with IPv6
[    6.341785] In-situ OAM (IOAM) with IPv6
[    6.346271] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
[    6.348651] mmc_host mmc0: Bus speed (slot 0) = 400000Hz (slot req 400000Hz, actual 400000HZ div = 0)
[    6.354669] NET: Registered PF_PACKET protocol family
[    6.369011] can: controller area network core
[    6.374063] NET: Registered PF_CAN protocol family
[    6.379578] can: raw protocol
[    6.383030] can: broadcast manager protocol
[    6.387773] can: netlink gateway - max_hops=1
[    6.393415] Key type dns_resolver registered
[    6.398335] ThumbEE CPU extension supported.
[    6.403186] Registering SWP/SWPB emulation handler
[    6.415006] dwmmc_rockchip ff0d0000.mmc: could not set regulator OCR (-22)
[    6.422781] dwmmc_rockchip ff0d0000.mmc: failed to enable vmmc regulator
[    6.441355] mmc_host mmc0: Bus speed (slot 0) = 300000Hz (slot req 300000Hz, actual 300000HZ div = 0)
[    6.443478] Loading compiled-in X.509 certificates
[    6.483046] dwmmc_rockchip ff0d0000.mmc: could not set regulator OCR (-22)
[    6.484810] kmemleak: Kernel memory leak detector initialized (mem pool available: 15768)
[    6.484829] kmemleak: Automatic memory scanning thread started
[    6.490741] dwmmc_rockchip ff0d0000.mmc: failed to enable vmmc regulator
[    6.527413] mmc_host mmc0: Bus speed (slot 0) = 200000Hz (slot req 200000Hz, actual 200000HZ div = 0)
[    6.575931] dwmmc_rockchip ff0d0000.mmc: could not set regulator OCR (-22)
[    6.583685] dwmmc_rockchip ff0d0000.mmc: failed to enable vmmc regulator
[    6.604569] mmc_host mmc0: Bus speed (slot 0) = 187500Hz (slot req 187500Hz, actual 187500HZ div = 0)
[    6.647475] rockchip-drm display-subsystem: bound ff930000.vop (ops vop_component_ops)
[    6.658391] rockchip-drm display-subsystem: bound ff940000.vop (ops vop_component_ops)
[    6.667869] dwhdmi-rockchip ff980000.hdmi: supply avdd-0v9 not found, using dummy regulator
[    6.679502] dwhdmi-rockchip ff980000.hdmi: supply avdd-1v8 not found, using dummy regulator
[    6.690798] dwhdmi-rockchip ff980000.hdmi: Detected HDMI TX controller v2.00a with HDCP (DWC MHL PHY)
[    6.707322] rockchip-drm display-subsystem: bound ff980000.hdmi (ops dw_hdmi_rockchip_ops)
[    6.720472] [drm] Initialized rockchip 1.0.0 20140818 for display-subsystem on minor 0
[    7.227853] ------------[ cut here ]------------
[    7.227900] WARNING: CPU: 0 PID: 9 at drivers/iommu/iommu.c:2198 __iommu_group_set_domain+0xb4/0xc8
[    7.227920] Modules linked in:
[    7.227935] CPU: 0 PID: 9 Comm: kworker/u8:0 Not tainted 6.3.0-rc1 #1
[    7.227942] Hardware name: Rockchip (Device Tree)
[    7.227948] Workqueue: events_unbound deferred_probe_work_func
[    7.227964]  unwind_backtrace from show_stack+0x10/0x14
[    7.227978]  show_stack from dump_stack_lvl+0x58/0x70
[    7.227992]  dump_stack_lvl from __warn+0x7c/0x1dc
[    7.228008]  __warn from warn_slowpath_fmt+0xbc/0x1a0
[    7.228022]  warn_slowpath_fmt from __iommu_group_set_domain+0xb4/0xc8
[    7.228035]  __iommu_group_set_domain from iommu_detach_device+0x84/0xf8
[    7.228046]  iommu_detach_device from arm_iommu_detach_device+0x24/0xc4
[    7.228057]  arm_iommu_detach_device from rockchip_drm_dma_attach_device+0x30/0x74
[    7.228073]  rockchip_drm_dma_attach_device from vop_crtc_atomic_enable+0xf8/0xab0
[    7.228085]  vop_crtc_atomic_enable from drm_atomic_helper_commit_modeset_enables+0xb0/0x2a0
[    7.228097]  drm_atomic_helper_commit_modeset_enables from drm_atomic_helper_commit_tail_rpm+0x44/0x8c
[    7.228111]  drm_atomic_helper_commit_tail_rpm from commit_tail+0x9c/0x184
[    7.228124]  commit_tail from drm_atomic_helper_commit+0x164/0x18c
[    7.228137]  drm_atomic_helper_commit from drm_atomic_commit+0xb0/0xe8
[    7.228153]  drm_atomic_commit from drm_client_modeset_commit_atomic+0x240/0x288
[    7.228166]  drm_client_modeset_commit_atomic from drm_client_modeset_commit_locked+0x60/0x1cc
[    7.228174]  drm_client_modeset_commit_locked from drm_client_modeset_commit+0x24/0x40
[    7.228183]  drm_client_modeset_commit from drm_fb_helper_set_par+0xb8/0xf8
[    7.228197]  drm_fb_helper_set_par from fbcon_init+0x2a0/0x534
[    7.228211]  fbcon_init from visual_init+0xc0/0x108
[    7.228224]  visual_init from do_bind_con_driver+0x1bc/0x3a8
[    7.228237]  do_bind_con_driver from do_take_over_console+0x134/0x1d4
[    7.228251]  do_take_over_console from do_fbcon_takeover+0x6c/0xcc
[    7.228264]  do_fbcon_takeover from fbcon_fb_registered+0x198/0x1a8
[    7.228277]  fbcon_fb_registered from register_framebuffer+0x1d0/0x268
[    7.228292]  register_framebuffer from __drm_fb_helper_initial_config_and_unlock+0x358/0x578
[    7.228308]  __drm_fb_helper_initial_config_and_unlock from drm_fbdev_client_hotplug+0x6c/0xa8
[    7.228322]  drm_fbdev_client_hotplug from drm_fbdev_generic_setup+0x84/0x174
[    7.228335]  drm_fbdev_generic_setup from rockchip_drm_bind+0x1dc/0x200
[    7.228349]  rockchip_drm_bind from try_to_bring_up_aggregate_device+0x200/0x2d8
[    7.228368]  try_to_bring_up_aggregate_device from component_master_add_with_match+0xc4/0xf8
[    7.228380]  component_master_add_with_match from rockchip_drm_platform_probe+0x150/0x254
[    7.228392]  rockchip_drm_platform_probe from platform_probe+0x5c/0xb8
[    7.228405]  platform_probe from really_probe+0xe0/0x400
[    7.228417]  really_probe from __driver_probe_device+0x9c/0x1fc
[    7.228431]  __driver_probe_device from driver_probe_device+0x30/0xc0
[    7.228445]  driver_probe_device from __device_attach_driver+0xa8/0x120
[    7.228460]  __device_attach_driver from bus_for_each_drv+0x84/0xdc
[    7.228474]  bus_for_each_drv from __device_attach+0xb0/0x20c
[    7.228488]  __device_attach from bus_probe_device+0x8c/0x90
[    7.228502]  bus_probe_device from deferred_probe_work_func+0x98/0xe0
[    7.228515]  deferred_probe_work_func from process_one_work+0x290/0x740
[    7.228528]  process_one_work from worker_thread+0x54/0x518
[    7.228536]  worker_thread from kthread+0xf0/0x110
[    7.228548]  kthread from ret_from_fork+0x14/0x2c
[    7.228561] Exception stack(0xf084dfb0 to 0xf084dff8)
[    7.228567] dfa0:                                     00000000 00000000 00000000 00000000
[    7.228573] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    7.228579] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000
[    7.228585] irq event stamp: 138379
[    7.228592] hardirqs last  enabled at (138385): [<c03c42ac>] vprintk_emit+0x330/0x354
[    7.228606] hardirqs last disabled at (138390): [<c03c4268>] vprintk_emit+0x2ec/0x354
[    7.228617] softirqs last  enabled at (137258): [<c03016ac>] __do_softirq+0x2f8/0x548
[    7.228628] softirqs last disabled at (137253): [<c0350218>] __irq_exit_rcu+0x14c/0x170
[    7.228639] ---[ end trace 0000000000000000 ]---
[    7.228648] ------------[ cut here ]------------
[    7.228689] WARNING: CPU: 0 PID: 9 at drivers/iommu/rockchip-iommu.c:1113 rk_iommu_domain_free+0xd0/0xd4
[    7.228704] Modules linked in:
[    7.228716] CPU: 0 PID: 9 Comm: kworker/u8:0 Tainted: G        W          6.3.0-rc1 #1
[    7.228723] Hardware name: Rockchip (Device Tree)
[    7.228727] Workqueue: events_unbound deferred_probe_work_func
[    7.228741]  unwind_backtrace from show_stack+0x10/0x14
[    7.228753]  show_stack from dump_stack_lvl+0x58/0x70
[    7.228765]  dump_stack_lvl from __warn+0x7c/0x1dc
[    7.228779]  __warn from warn_slowpath_fmt+0xbc/0x1a0
[    7.228794]  warn_slowpath_fmt from rk_iommu_domain_free+0xd0/0xd4
[    7.228809]  rk_iommu_domain_free from release_iommu_mapping+0x14/0x54
[    7.228822]  release_iommu_mapping from rockchip_drm_dma_attach_device+0x38/0x74
[    7.228835]  rockchip_drm_dma_attach_device from vop_crtc_atomic_enable+0xf8/0xab0
[    7.228848]  vop_crtc_atomic_enable from drm_atomic_helper_commit_modeset_enables+0xb0/0x2a0
[    7.228859]  drm_atomic_helper_commit_modeset_enables from drm_atomic_helper_commit_tail_rpm+0x44/0x8c
[    7.228873]  drm_atomic_helper_commit_tail_rpm from commit_tail+0x9c/0x184
[    7.228886]  commit_tail from drm_atomic_helper_commit+0x164/0x18c
[    7.228899]  drm_atomic_helper_commit from drm_atomic_commit+0xb0/0xe8
[    7.228913]  drm_atomic_commit from drm_client_modeset_commit_atomic+0x240/0x288
[    7.228925]  drm_client_modeset_commit_atomic from drm_client_modeset_commit_locked+0x60/0x1cc
[    7.228934]  drm_client_modeset_commit_locked from drm_client_modeset_commit+0x24/0x40
[    7.228942]  drm_client_modeset_commit from drm_fb_helper_set_par+0xb8/0xf8
[    7.228954]  drm_fb_helper_set_par from fbcon_init+0x2a0/0x534
[    7.228967]  fbcon_init from visual_init+0xc0/0x108
[    7.228979]  visual_init from do_bind_con_driver+0x1bc/0x3a8
[    7.228992]  do_bind_con_driver from do_take_over_console+0x134/0x1d4
[    7.229006]  do_take_over_console from do_fbcon_takeover+0x6c/0xcc
[    7.229019]  do_fbcon_takeover from fbcon_fb_registered+0x198/0x1a8
[    7.229030]  fbcon_fb_registered from register_framebuffer+0x1d0/0x268
[    7.229044]  register_framebuffer from __drm_fb_helper_initial_config_and_unlock+0x358/0x578
[    7.229060]  __drm_fb_helper_initial_config_and_unlock from drm_fbdev_client_hotplug+0x6c/0xa8
[    7.229074]  drm_fbdev_client_hotplug from drm_fbdev_generic_setup+0x84/0x174
[    7.229087]  drm_fbdev_generic_setup from rockchip_drm_bind+0x1dc/0x200
[    7.229101]  rockchip_drm_bind from try_to_bring_up_aggregate_device+0x200/0x2d8
[    7.229118]  try_to_bring_up_aggregate_device from component_master_add_with_match+0xc4/0xf8
[    7.229130]  component_master_add_with_match from rockchip_drm_platform_probe+0x150/0x254
[    7.229142]  rockchip_drm_platform_probe from platform_probe+0x5c/0xb8
[    7.229154]  platform_probe from really_probe+0xe0/0x400
[    7.229166]  really_probe from __driver_probe_device+0x9c/0x1fc
[    7.229180]  __driver_probe_device from driver_probe_device+0x30/0xc0
[    7.229194]  driver_probe_device from __device_attach_driver+0xa8/0x120
[    7.229208]  __device_attach_driver from bus_for_each_drv+0x84/0xdc
[    7.229222]  bus_for_each_drv from __device_attach+0xb0/0x20c
[    7.229236]  __device_attach from bus_probe_device+0x8c/0x90
[    7.229249]  bus_probe_device from deferred_probe_work_func+0x98/0xe0
[    7.229262]  deferred_probe_work_func from process_one_work+0x290/0x740
[    7.229274]  process_one_work from worker_thread+0x54/0x518
[    7.229282]  worker_thread from kthread+0xf0/0x110
[    7.229294]  kthread from ret_from_fork+0x14/0x2c
[    7.229305] Exception stack(0xf084dfb0 to 0xf084dff8)
[    7.229311] dfa0:                                     00000000 00000000 00000000 00000000
[    7.229317] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    7.229323] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000
[    7.229329] irq event stamp: 138441
[    7.229335] hardirqs last  enabled at (138447): [<c03c42ac>] vprintk_emit+0x330/0x354
[    7.229347] hardirqs last disabled at (138452): [<c03c4268>] vprintk_emit+0x2ec/0x354
[    7.229358] softirqs last  enabled at (137258): [<c03016ac>] __do_softirq+0x2f8/0x548
[    7.229369] softirqs last disabled at (137253): [<c0350218>] __irq_exit_rcu+0x14c/0x170
[    7.229380] ---[ end trace 0000000000000000 ]---
[    7.229479] BUG: sleeping function called from invalid context at kernel/locking/mutex.c:580
[    7.229487] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 9, name: kworker/u8:0
[    7.229495] preempt_count: 2, expected: 0
[    7.229502] 12 locks held by kworker/u8:0/9:
[    7.229509]  #0: c3006ca8 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x1ec/0x740
[    7.229549]  #1: f084df20 (deferred_probe_work){+.+.}-{0:0}, at: process_one_work+0x1ec/0x740
[    7.229587]  #2: c3278c8c (&dev->mutex){....}-{3:3}, at: __device_attach+0x30/0x20c
[    7.229628]  #3: c1fe6064 (component_mutex){+.+.}-{3:3}, at: component_master_add_with_match+0xa4/0xf8
[    7.229665]  #4: c1f5928c (registration_lock){+.+.}-{3:3}, at: register_framebuffer+0x2c/0x268
[    7.229706]  #5: c1e2dfbc (console_lock){+.+.}-{0:0}, at: fbcon_fb_registered+0x28/0x1a8
[    7.229745]  #6: c5250970 (&helper->lock){+.+.}-{3:3}, at: drm_fb_helper_set_par+0x70/0xf8
[    7.229786]  #7: c336b0ec (&dev->master_mutex){+.+.}-{3:3}, at: drm_master_internal_acquire+0x18/0x3c
[    7.229827]  #8: c5250850 (&client->modeset_mutex){+.+.}-{3:3}, at: drm_client_modeset_commit_locked+0x20/0x1cc
[    7.229865]  #9: f084da44 (crtc_ww_class_acquire){+.+.}-{0:0}, at: drm_client_modeset_commit_atomic+0x38/0x288
[    7.229902]  #10: c37854e0 (crtc_ww_class_mutex){+.+.}-{3:3}, at: drm_modeset_backoff+0xa4/0x260
[    7.229945]  #11: c44fc55c (&vop->vop_lock){+.+.}-{3:3}, at: vop_crtc_atomic_enable+0x98/0xab0
[    7.229983] CPU: 0 PID: 9 Comm: kworker/u8:0 Tainted: G        W          6.3.0-rc1 #1
[    7.229989] Hardware name: Rockchip (Device Tree)
[    7.229994] Workqueue: events_unbound deferred_probe_work_func
[    7.230007]  unwind_backtrace from show_stack+0x10/0x14
[    7.230019]  show_stack from dump_stack_lvl+0x58/0x70
[    7.230031]  dump_stack_lvl from __might_resched+0x158/0x2a8
[    7.230044]  __might_resched from __mutex_lock+0x40/0xa48
[    7.230054]  __mutex_lock from mutex_lock_nested+0x1c/0x24
[    7.230062]  mutex_lock_nested from iommu_attach_device+0x30/0x8c
[    7.230072]  iommu_attach_device from rockchip_drm_dma_attach_device+0x44/0x74
[    7.230085]  rockchip_drm_dma_attach_device from vop_crtc_atomic_enable+0xf8/0xab0
[    7.230098]  vop_crtc_atomic_enable from drm_atomic_helper_commit_modeset_enables+0xb0/0x2a0
[    7.230109]  drm_atomic_helper_commit_modeset_enables from drm_atomic_helper_commit_tail_rpm+0x44/0x8c
[    7.230123]  drm_atomic_helper_commit_tail_rpm from commit_tail+0x9c/0x184
[    7.230136]  commit_tail from drm_atomic_helper_commit+0x164/0x18c
[    7.230149]  drm_atomic_helper_commit from drm_atomic_commit+0xb0/0xe8
[    7.230163]  drm_atomic_commit from drm_client_modeset_commit_atomic+0x240/0x288
[    7.230175]  drm_client_modeset_commit_atomic from drm_client_modeset_commit_locked+0x60/0x1cc
[    7.230184]  drm_client_modeset_commit_locked from drm_client_modeset_commit+0x24/0x40
[    7.230192]  drm_client_modeset_commit from drm_fb_helper_set_par+0xb8/0xf8
[    7.230204]  drm_fb_helper_set_par from fbcon_init+0x2a0/0x534
[    7.230217]  fbcon_init from visual_init+0xc0/0x108
[    7.230229]  visual_init from do_bind_con_driver+0x1bc/0x3a8
[    7.230241]  do_bind_con_driver from do_take_over_console+0x134/0x1d4
[    7.230255]  do_take_over_console from do_fbcon_takeover+0x6c/0xcc
[    7.230268]  do_fbcon_takeover from fbcon_fb_registered+0x198/0x1a8
[    7.230279]  fbcon_fb_registered from register_framebuffer+0x1d0/0x268
[    7.230293]  register_framebuffer from __drm_fb_helper_initial_config_and_unlock+0x358/0x578
[    7.230309]  __drm_fb_helper_initial_config_and_unlock from drm_fbdev_client_hotplug+0x6c/0xa8
[    7.230323]  drm_fbdev_client_hotplug from drm_fbdev_generic_setup+0x84/0x174
[    7.230336]  drm_fbdev_generic_setup from rockchip_drm_bind+0x1dc/0x200
[    7.230351]  rockchip_drm_bind from try_to_bring_up_aggregate_device+0x200/0x2d8
[    7.230367]  try_to_bring_up_aggregate_device from component_master_add_with_match+0xc4/0xf8
[    7.230380]  component_master_add_with_match from rockchip_drm_platform_probe+0x150/0x254
[    7.230392]  rockchip_drm_platform_probe from platform_probe+0x5c/0xb8
[    7.230404]  platform_probe from really_probe+0xe0/0x400
[    7.230415]  really_probe from __driver_probe_device+0x9c/0x1fc
[    7.230430]  __driver_probe_device from driver_probe_device+0x30/0xc0
[    7.230444]  driver_probe_device from __device_attach_driver+0xa8/0x120
[    7.230458]  __device_attach_driver from bus_for_each_drv+0x84/0xdc
[    7.230472]  bus_for_each_drv from __device_attach+0xb0/0x20c
[    7.230485]  __device_attach from bus_probe_device+0x8c/0x90
[    7.230499]  bus_probe_device from deferred_probe_work_func+0x98/0xe0
[    7.230512]  deferred_probe_work_func from process_one_work+0x290/0x740
[    7.230524]  process_one_work from worker_thread+0x54/0x518
[    7.230533]  worker_thread from kthread+0xf0/0x110
[    7.230544]  kthread from ret_from_fork+0x14/0x2c
[    7.230555] Exception stack(0xf084dfb0 to 0xf084dff8)
[    7.230561] dfa0:                                     00000000 00000000 00000000 00000000
[    7.230568] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    7.230573] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000
[    7.240398] BUG: scheduling while atomic: kworker/u8:0/9/0x00000003
[    7.240443] 12 locks held by kworker/u8:0/9:
[    7.240450]  #0: c3006ca8 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x1ec/0x740
[    7.240491]  #1: f084df20 (deferred_probe_work){+.+.}-{0:0}, at: process_one_work+0x1ec/0x740
[    7.240529]  #2: c3278c8c (&dev->mutex){....}-{3:3}, at: __device_attach+0x30/0x20c
[    7.240570]  #3: c1fe6064 (component_mutex){+.+.}-{3:3}, at: component_master_add_with_match+0xa4/0xf8
[    7.240608]  #4: c1f5928c (registration_lock){+.+.}-{3:3}, at: register_framebuffer+0x2c/0x268
[    7.240650]  #5: c1e2dfbc (console_lock){+.+.}-{0:0}, at: fbcon_fb_registered+0x28/0x1a8
[    7.240689]  #6: c5250970 (&helper->lock){+.+.}-{3:3}, at: drm_fb_helper_set_par+0x70/0xf8
[    7.240729]  #7: c336b0ec (&dev->master_mutex){+.+.}-{3:3}, at: drm_master_internal_acquire+0x18/0x3c
[    7.240771]  #8: c5250850 (&client->modeset_mutex){+.+.}-{3:3}, at: drm_client_modeset_commit_locked+0x20/0x1cc
[    7.240809]  #9: f084da44 (crtc_ww_class_acquire){+.+.}-{0:0}, at: drm_client_modeset_commit_atomic+0x38/0x288
[    7.240846]  #10: c37854e0 (crtc_ww_class_mutex){+.+.}-{3:3}, at: drm_modeset_backoff+0xa4/0x260
[    7.240888]  #11: c37858c4 (&hdmi->mutex){+.+.}-{3:3}, at: dw_hdmi_bridge_atomic_enable+0x34/0x8c
[    7.240930] Modules linked in:
[    7.240942] CPU: 0 PID: 9 Comm: kworker/u8:0 Tainted: G        W          6.3.0-rc1 #1
[    7.240949] Hardware name: Rockchip (Device Tree)
[    7.240954] Workqueue: events_unbound deferred_probe_work_func
[    7.240968]  unwind_backtrace from show_stack+0x10/0x14
[    7.240980]  show_stack from dump_stack_lvl+0x58/0x70
[    7.240992]  dump_stack_lvl from __schedule_bug+0x6c/0x80
[    7.241005]  __schedule_bug from __schedule+0xa80/0xd34
[    7.241013]  __schedule from schedule+0x58/0xf8
[    7.241020]  schedule from schedule_hrtimeout_range_clock+0x138/0x288
[    7.241030]  schedule_hrtimeout_range_clock from schedule_hrtimeout_range+0x1c/0x24
[    7.241041]  schedule_hrtimeout_range from usleep_range_state+0x88/0xe4
[    7.241052]  usleep_range_state from dw_hdmi_phy_init+0x1d8/0x310
[    7.241065]  dw_hdmi_phy_init from dw_hdmi_update_power+0x5a4/0x1980
[    7.241080]  dw_hdmi_update_power from dw_hdmi_bridge_atomic_enable+0x48/0x8c
[    7.241096]  dw_hdmi_bridge_atomic_enable from drm_atomic_bridge_chain_enable+0x48/0xa4
[    7.241112]  drm_atomic_bridge_chain_enable from drm_atomic_helper_commit_modeset_enables+0x1a0/0x2a0
[    7.241129]  drm_atomic_helper_commit_modeset_enables from drm_atomic_helper_commit_tail_rpm+0x44/0x8c
[    7.241143]  drm_atomic_helper_commit_tail_rpm from commit_tail+0x9c/0x184
[    7.241156]  commit_tail from drm_atomic_helper_commit+0x164/0x18c
[    7.241169]  drm_atomic_helper_commit from drm_atomic_commit+0xb0/0xe8
[    7.241183]  drm_atomic_commit from drm_client_modeset_commit_atomic+0x240/0x288
[    7.241195]  drm_client_modeset_commit_atomic from drm_client_modeset_commit_locked+0x60/0x1cc
[    7.241203]  drm_client_modeset_commit_locked from drm_client_modeset_commit+0x24/0x40
[    7.241212]  drm_client_modeset_commit from drm_fb_helper_set_par+0xb8/0xf8
[    7.241224]  drm_fb_helper_set_par from fbcon_init+0x2a0/0x534
[    7.241237]  fbcon_init from visual_init+0xc0/0x108
[    7.241249]  visual_init from do_bind_con_driver+0x1bc/0x3a8
[    7.241262]  do_bind_con_driver from do_take_over_console+0x134/0x1d4
[    7.241276]  do_take_over_console from do_fbcon_takeover+0x6c/0xcc
[    7.241289]  do_fbcon_takeover from fbcon_fb_registered+0x198/0x1a8
[    7.241300]  fbcon_fb_registered from register_framebuffer+0x1d0/0x268
[    7.241315]  register_framebuffer from __drm_fb_helper_initial_config_and_unlock+0x358/0x578
[    7.241330]  __drm_fb_helper_initial_config_and_unlock from drm_fbdev_client_hotplug+0x6c/0xa8
[    7.241344]  drm_fbdev_client_hotplug from drm_fbdev_generic_setup+0x84/0x174
[    7.241357]  drm_fbdev_generic_setup from rockchip_drm_bind+0x1dc/0x200
[    7.241372]  rockchip_drm_bind from try_to_bring_up_aggregate_device+0x200/0x2d8
[    7.241389]  try_to_bring_up_aggregate_device from component_master_add_with_match+0xc4/0xf8
[    7.241401]  component_master_add_with_match from rockchip_drm_platform_probe+0x150/0x254
[    7.241413]  rockchip_drm_platform_probe from platform_probe+0x5c/0xb8
[    7.241425]  platform_probe from really_probe+0xe0/0x400
[    7.241437]  really_probe from __driver_probe_device+0x9c/0x1fc
[    7.241451]  __driver_probe_device from driver_probe_device+0x30/0xc0
[    7.241465]  driver_probe_device from __device_attach_driver+0xa8/0x120
[    7.241480]  __device_attach_driver from bus_for_each_drv+0x84/0xdc
[    7.241493]  bus_for_each_drv from __device_attach+0xb0/0x20c
[    7.241507]  __device_attach from bus_probe_device+0x8c/0x90
[    7.241520]  bus_probe_device from deferred_probe_work_func+0x98/0xe0
[    7.241534]  deferred_probe_work_func from process_one_work+0x290/0x740
[    7.241545]  process_one_work from worker_thread+0x54/0x518
[    7.241553]  worker_thread from kthread+0xf0/0x110
[    7.241565]  kthread from ret_from_fork+0x14/0x2c
[    7.241576] Exception stack(0xf084dfb0 to 0xf084dff8)
[    7.241582] dfa0:                                     00000000 00000000 00000000 00000000
[    7.241588] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    7.241594] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000
[    7.298852] Console: switching to colour frame buffer device 240x67
[    9.285125] rockchip-drm display-subsystem: [drm] fb0: rockchipdrmfb frame buffer device
[    9.298291] rk_gmac-dwmac ff290000.ethernet: IRQ eth_lpi not found
[    9.305664] rk_gmac-dwmac ff290000.ethernet: PTP uses main clock
[    9.313433] rk_gmac-dwmac ff290000.ethernet: clock input or output? (input).
[    9.321342] rk_gmac-dwmac ff290000.ethernet: TX delay(0x30).
[    9.327672] rk_gmac-dwmac ff290000.ethernet: RX delay(0x10).
[    9.334045] rk_gmac-dwmac ff290000.ethernet: integrated PHY? (no).
[    9.341175] rk_gmac-dwmac ff290000.ethernet: cannot get clock clk_mac_speed
[    9.348982] rk_gmac-dwmac ff290000.ethernet: clock input from PHY
[    9.360857] rk_gmac-dwmac ff290000.ethernet: init for RGMII
[    9.368155] rk_gmac-dwmac ff290000.ethernet: User ID: 0x10, Synopsys ID: 0x35
[    9.376213] rk_gmac-dwmac ff290000.ethernet: 	DWMAC1000
[    9.382121] rk_gmac-dwmac ff290000.ethernet: DMA HW capability register supported
[    9.390490] rk_gmac-dwmac ff290000.ethernet: RX Checksum Offload Engine supported
[    9.398876] rk_gmac-dwmac ff290000.ethernet: COE Type 2
[    9.404742] rk_gmac-dwmac ff290000.ethernet: TX Checksum insertion supported
[    9.412643] rk_gmac-dwmac ff290000.ethernet: Wake-Up On Lan supported
[    9.420105] rk_gmac-dwmac ff290000.ethernet: Normal descriptors
[    9.426752] rk_gmac-dwmac ff290000.ethernet: Ring mode enabled
[    9.433293] rk_gmac-dwmac ff290000.ethernet: Enable RX Mitigation via HW Watchdog Timer
[   10.541530] RTL8211E Gigabit Ethernet stmmac-0:00: attached PHY driver (mii_bus:phy_addr=stmmac-0:00, irq=POLL)
[   10.552993] RTL8211E Gigabit Ethernet stmmac-0:01: attached PHY driver (mii_bus:phy_addr=stmmac-0:01, irq=POLL)
[   10.592560] dwmmc_rockchip ff0c0000.mmc: IDMAC supports 32-bit address mode.
[   10.599818] dwmmc_rockchip ff0f0000.mmc: IDMAC supports 32-bit address mode.
[   10.613052] dwmmc_rockchip ff0f0000.mmc: Using internal DMA controller.
[   10.620499] dwmmc_rockchip ff0f0000.mmc: Version ID is 270a
[   10.627565] dwmmc_rockchip ff0f0000.mmc: DW MMC controller at irq 68,32 bit host data width,256 deep fifo
[   10.640111] dwmmc_rockchip ff0c0000.mmc: Using internal DMA controller.
[   10.641983] mmc_host mmc1: card is non-removable.
[   10.647556] dwmmc_rockchip ff0c0000.mmc: Version ID is 270a
[   10.655536] mmc_host mmc1: Bus speed (slot 0) = 400000Hz (slot req 400000Hz, actual 400000HZ div = 0)
[   10.659216] dwmmc_rockchip ff0c0000.mmc: DW MMC controller at irq 67,32 bit host data width,256 deep fifo
[   10.728702] mmc_host mmc1: Bus speed (slot 0) = 50000000Hz (slot req 52000000Hz, actual 50000000HZ div = 0)
[   10.740961] mmc1: new high speed MMC card at address 0001
[   10.766773] mmcblk1: mmc1:0001 AGND3R 14.6 GiB 
[   10.819740] input: gpio-keys as /devices/platform/gpio-keys/input/input0
[   10.825893] mmc_host mmc2: Bus speed (slot 0) = 400000Hz (slot req 400000Hz, actual 400000HZ div = 0)
[   10.831108] mmcblk1boot0: mmc1:0001 AGND3R 4.00 MiB 
[   10.855268] mmcblk1boot1: mmc1:0001 AGND3R 4.00 MiB 
[   10.871615] mmcblk1rpmb: mmc1:0001 AGND3R 4.00 MiB, chardev (237:0)
[   10.882753] rk_gmac-dwmac ff290000.ethernet eth0: Register MEM_TYPE_PAGE_POOL RxQ-0
[   10.894185] rk_gmac-dwmac ff290000.ethernet eth0: PHY [stmmac-0:00] driver [RTL8211E Gigabit Ethernet] (irq=POLL)
[   10.905772] rk_gmac-dwmac ff290000.ethernet eth0: No Safety Features support found
[   10.914263] rk_gmac-dwmac ff290000.ethernet eth0: PTP not supported by HW
[   10.924135] rk_gmac-dwmac ff290000.ethernet eth0: configuring for phy/rgmii link mode
[   10.945701] mmc_host mmc2: Bus speed (slot 0) = 50000000Hz (slot req 50000000Hz, actual 50000000HZ div = 0)
[   10.956824] mmc2: new high speed SDHC card at address 0007
[   10.966380] mmcblk2: mmc2:0007 SD08G 7.42 GiB 
[   10.979728]  mmcblk2: p1 p2
[   13.056934] rk_gmac-dwmac ff290000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
[   13.068055] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   13.121326] Sending DHCP requests ., OK
[   13.186635] IP-Config: Got DHCP answer from 10.1.194.1, my address is 10.1.194.47
[   13.195363] IP-Config: Complete:
[   13.199023]      device=eth0, hwaddr=0e:3c:67:4e:4f:6f, ipaddr=10.1.194.47, mask=255.255.254.0, gw=10.1.194.1
[   13.210170]      host=10.1.194.47, domain=cambridge.arm.com, nis-domain=(none)
[   13.218323]      bootserver=10.1.109.185, rootserver=10.1.194.34, rootpath=
[   13.218336]      nameserver0=10.1.105.170, nameserver1=10.1.105.21, nameserver2=10.121.205.16
[   13.235734]      ntpserver0=10.58.96.12, ntpserver1=10.123.17.134, ntpserver2=10.172.89.13
[   13.252980] dw-apb-uart ff690000.serial: forbid DMA for kernel console
[   13.312445] VFS: Mounted root (nfs4 filesystem) on device 0:17.
[   13.320708] devtmpfs: mounted
[   13.326976] Freeing unused kernel image (initmem) memory: 2048K
[   13.413210] Run /sbin/init as init process
[   14.504339] systemd[1]: System time before build time, advancing clock.
[   14.598430] systemd[1]: systemd 247.3-7+deb11u1 running in system mode. (+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +ZSTD +SECCOMP +BLKID +ELFUTILS +KMOD +IDN2 -IDN +PCRE2 default-hierarchy=unified)
[   14.626347] systemd[1]: Detected architecture arm.

Welcome to Debian GNU/Linux 11 (bullseye)!

[   14.691189] systemd[1]: Set hostname to <stepri01-debian>.
[   16.749290] systemd[1]: Queued start job for default target Graphical Interface.
[   16.759945] random: systemd: uninitialized urandom read (16 bytes read)
[   16.767549] systemd[1]: system-getty.slice: unit configures an IP firewall, but the local system does not support BPF/cgroup firewalling.
[   16.782345] systemd[1]: (This warning is only shown for the first unit using IP firewalling.)
[   16.795994] systemd[1]: Created slice system-getty.slice.
[  OK  ] Created slice system-getty.slice.
[   16.881253] ------------[ cut here ]------------
[   16.886415] WARNING: CPU: 0 PID: 1 at kernel/locking/lockdep.c:232 __lock_acquire+0xb58/0x2a64
[   16.896048] DEBUG_LOCKS_WARN_ON(1)
[   16.896051] Modules linked in:
[   16.903250] CPU: 0 PID: 1 Comm: systemd Tainted: G        W          6.3.0-rc1 #1
[   16.911612] Hardware name: Rockchip (Device Tree)
[   16.916864]  unwind_backtrace from show_stack+0x10/0x14
[   16.922706]  show_stack from dump_stack_lvl+0x58/0x70
[   16.928354]  dump_stack_lvl from __warn+0x7c/0x1dc
[   16.933713]  __warn from warn_slowpath_fmt+0x134/0x1a0
[   16.939459]  warn_slowpath_fmt from __lock_acquire+0xb58/0x2a64
[   16.946079]  __lock_acquire from lock_acquire+0x110/0x374
[   16.952117]  lock_acquire from _raw_spin_lock+0x40/0x50
[   16.957958]  _raw_spin_lock from add_timer_on+0x94/0x1d8
[   16.963898]  add_timer_on from try_to_generate_entropy+0x1f0/0x274
[   16.970805]  try_to_generate_entropy from urandom_read_iter+0x50/0xdc
[   16.978004]  urandom_read_iter from vfs_read+0x1c8/0x290
[   16.983942]  vfs_read from ksys_read+0x60/0xe4
[   16.988909]  ksys_read from ret_fast_syscall+0x0/0x1c
[   16.994554] Exception stack(0xf0829fa8 to 0xf0829ff0)
[   17.000194] 9fa0:                   00000010 be946970 0000001a be946970 00000010 00000000
[   17.009332] 9fc0: 00000010 be946970 b6f500e0 00000003 00000001 b6f2c98c 00000002 00000000
[   17.018468] 9fe0: 00000003 be9468d8 b6b8e457 b6b147e6
[   17.024099] irq event stamp: 909082
[   17.027981] hardirqs last  enabled at (909081): [<c126adcc>] _raw_spin_unlock_irqrestore+0x44/0x48
[   17.037994] hardirqs last disabled at (909082): [<c126aba0>] _raw_spin_lock_irqsave+0x68/0x6c
[   17.047522] softirqs last  enabled at (909078): [<c03016ac>] __do_softirq+0x2f8/0x548
[   17.056271] softirqs last disabled at (909071): [<c0350218>] __irq_exit_rcu+0x14c/0x170
[   17.065216] ---[ end trace 0000000000000000 ]---
[   17.070372] 8<--- cut here ---
[   17.073776] Unable to handle kernel NULL pointer dereference at virtual address 00000060 when read
[   17.083777] [00000060] *pgd=00000000
[   17.087767] Internal error: Oops: 5 [#1] SMP ARM
[   17.092922] Modules linked in:
[   17.096328] CPU: 0 PID: 1 Comm: systemd Tainted: G        W          6.3.0-rc1 #1
[   17.104688] Hardware name: Rockchip (Device Tree)
[   17.109938] PC is at __lock_acquire+0x1bc/0x2a64
[   17.115097] LR is at __lock_acquire+0xb58/0x2a64
[   17.120255] pc : [<c03b587c>]    lr : [<c03b6218>]    psr: 60010093
[   17.127253] sp : f0829d20  ip : 00000000  fp : c3238000
[   17.133086] r10: c24e3a20  r9 : c3238758  r8 : 00000080
[   17.138919] r7 : e1befa47  r6 : 00000000  r5 : c1d3aad1  r4 : 00000000
[   17.146209] r3 : 00001a47  r2 : 00000000  r1 : c2083528  r0 : 00000000
[   17.153500] Flags: nZCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment none
[   17.161568] Control: 10c5387d  Table: 0626c06a  DAC: 00000051
[   17.167983] Register r0 information: NULL pointer
[   17.173237] Register r1 information: non-slab/vmalloc memory
[   17.179557] Register r2 information: NULL pointer
[   17.184809] Register r3 information: non-paged memory
[   17.190449] Register r4 information: NULL pointer
[   17.195691] Register r5 information: non-slab/vmalloc memory
[   17.202002] Register r6 information: NULL pointer
[   17.207244] Register r7 information: non-slab/vmalloc memory
[   17.213555] Register r8 information: non-paged memory
[   17.219195] Register r9 information: slab task_struct start c3238000 pointer offset 1880 size 4032
[   17.229215] Register r10 information: non-slab/vmalloc memory
[   17.235633] Register r11 information: slab task_struct start c3238000 pointer offset 0 size 4032
[   17.245457] Register r12 information: NULL pointer
[   17.250805] Process systemd (pid: 1, stack limit = 0x(ptrval))
[   17.257319] Stack: (0xf0829d20 to 0xf082a000)
[   17.262182] 9d20: c19236ac ffffffff 00000000 00000001 00000000 c3238758 c26917f0 c1d3a47c
[   17.271319] 9d40: c1e095a4 00000007 c3238000 60010093 c1d3a5bc f0829d70 2d252000 00000080
[   17.280454] 9d60: 00000000 c1d3a5bc 00000000 a0ceac6f c3238000 60010093 c1d3a5bc f0829d98
[   17.289582] 9d80: 2d252000 00000080 00000000 c1d3a5bc 00000000 c03b8aec 00000001 00000080
[   17.298718] 9da0: 00000000 c03fcfac 00000000 00000000 c3238000 c3238758 00000000 c03aff5c
[   17.307855] 9dc0: c3238000 c1d3a5bc eefbfad0 60010093 c03fcfa4 a0ceac6f 00000001 c1d3aac1
[   17.316991] 9de0: c1d3aac1 00000010 c1d3aac1 f0829e84 c2904890 c1e09e88 c1e09050 c126a9c8
[   17.326119] 9e00: 00000001 00000000 c03fcfac c126ad0c f0829e84 c03fcfac eefbfac0 40010013
[   17.335255] 9e20: c3238000 a0ceac6f 40010013 f0829e80 00000010 c3238000 00000004 c1252798
[   17.344392] 9e40: c2904898 00000080 1857d94b 0000000f 00000000 c03b8aec 00000001 00000080
[   17.353528] 9e60: 00000000 00000000 c3238758 c125ce04 c3238000 c3238758 00000000 c03aff5c
[   17.362664] 9e80: 1857d94b 00000122 00000000 ffff9167 c125298c 09840003 c2904898 00000000
[   17.371792] 9ea0: 00000000 c19b8cdc c3000000 00000003 00000002 c044cf74 20010013 00000000
[   17.380928] 9ec0: 20010013 a0ceac6f c3313000 c2904890 f0829f10 c0a9f884 00000001 00000010
[   17.390065] 9ee0: 00000000 00004004 00000000 c0a9f8d4 c656c280 f0829f80 c0a9f884 c05153b4
[   17.399201] 9f00: c3313000 0000001a ffffff9c c03002f0 01000006 00000000 00000010 be946970
[   17.408328] 9f20: 00000000 00000000 c656c280 00000000 00000000 00000000 00000000 00000000
[   17.417464] 9f40: 00000000 00004004 00000000 00000000 b6ef0c4c a0ceac6f 00000142 c656c280
[   17.426592] 9f60: c656c280 00000000 00000000 c03002f0 c3238000 00000003 00000000 c0515f30
[   17.435728] 9f80: 00000000 00000000 00000000 a0ceac6f c3238000 00000010 be946970 b6f500e0
[   17.444865] 9fa0: 00000003 c03000c0 00000010 be946970 0000001a be946970 00000010 00000000
[   17.454001] 9fc0: 00000010 be946970 b6f500e0 00000003 00000001 b6f2c98c 00000002 00000000
[   17.463128] 9fe0: 00000003 be9468d8 b6b8e457 b6b147e6 60010030 0000001a 00000000 00000000
[   17.472263]  __lock_acquire from lock_acquire+0x110/0x374
[   17.478300]  lock_acquire from _raw_spin_lock+0x40/0x50
[   17.484141]  _raw_spin_lock from add_timer_on+0x94/0x1d8
[   17.490078]  add_timer_on from try_to_generate_entropy+0x1f0/0x274
[   17.496985]  try_to_generate_entropy from urandom_read_iter+0x50/0xdc
[   17.504183]  urandom_read_iter from vfs_read+0x1c8/0x290
[   17.510121]  vfs_read from ksys_read+0x60/0xe4
[   17.515088]  ksys_read from ret_fast_syscall+0x0/0x1c
[   17.520732] Exception stack(0xf0829fa8 to 0xf0829ff0)
[   17.526373] 9fa0:                   00000010 be946970 0000001a be946970 00000010 00000000
[   17.535509] 9fc0: 00000010 be946970 b6f500e0 00000003 00000001 b6f2c98c 00000002 00000000
[   17.544645] 9fe0: 00000003 be9468d8 b6b8e457 b6b147e6
[   17.550278] Code: 13a03064 1024a493 0a0001a2 e1d931b4 (e5d44060) 
[   17.557084] ---[ end trace 0000000000000000 ]---
[   17.562237] note: systemd[1] exited with irqs disabled
[   17.567994] note: systemd[1] exited with preempt_count 2
[   17.573937] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
[   17.582492] CPU1: stopping
[   17.585512] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G      D W          6.3.0-rc1 #1
[   17.594067] Hardware name: Rockchip (Device Tree)
[   17.599318]  unwind_backtrace from show_stack+0x10/0x14
[   17.605159]  show_stack from dump_stack_lvl+0x58/0x70
[   17.610805]  dump_stack_lvl from do_handle_IPI+0x360/0x394
[   17.616936]  do_handle_IPI from ipi_handler+0x18/0x20
[   17.622581]  ipi_handler from handle_percpu_devid_irq+0xc4/0x330
[   17.629295]  handle_percpu_devid_irq from generic_handle_domain_irq+0x28/0x38
[   17.637274]  generic_handle_domain_irq from gic_handle_irq+0x88/0xa8
[   17.644377]  gic_handle_irq from generic_handle_arch_irq+0x34/0x44
[   17.651285]  generic_handle_arch_irq from call_with_stack+0x18/0x20
[   17.658292]  call_with_stack from __irq_svc+0x9c/0xb8
[   17.663935] Exception stack(0xf0861f40 to 0xf0861f88)
[   17.669576] 1f40: c125f1ac 00000001 00000000 00000000 c324cec0 c039963c c204e8c0 c1e08f18
[   17.678712] 1f60: c1d416a8 c204d036 00000000 00000000 05f01d04 f0861f90 c125f1ac c125f1b0
[   17.687838] 1f80: 60010013 ffffffff
[   17.691728]  __irq_svc from default_idle_call+0x20/0x2d8
[   17.697666]  default_idle_call from do_idle+0x22c/0x2e0
[   17.703508]  do_idle from cpu_startup_entry+0x18/0x1c
[   17.709154]  cpu_startup_entry from secondary_start_kernel+0x134/0x154
[   17.716451]  secondary_start_kernel from 0x3019a0
[   17.721706] CPU2: stopping
[   17.724724] CPU: 2 PID: 0 Comm: swapper/2 Tainted: G      D W          6.3.0-rc1 #1
[   17.733279] Hardware name: Rockchip (Device Tree)
[   17.738530]  unwind_backtrace from show_stack+0x10/0x14
[   17.744371]  show_stack from dump_stack_lvl+0x58/0x70
[   17.750017]  dump_stack_lvl from do_handle_IPI+0x360/0x394
[   17.756150]  do_handle_IPI from ipi_handler+0x18/0x20
[   17.761794]  ipi_handler from handle_percpu_devid_irq+0xc4/0x330
[   17.768508]  handle_percpu_devid_irq from generic_handle_domain_irq+0x28/0x38
[   17.776485]  generic_handle_domain_irq from gic_handle_irq+0x88/0xa8
[   17.783589]  gic_handle_irq from generic_handle_arch_irq+0x34/0x44
[   17.790497]  generic_handle_arch_irq from call_with_stack+0x18/0x20
[   17.797503]  call_with_stack from __irq_svc+0x9c/0xb8
[   17.803146] Exception stack(0xf0865f40 to 0xf0865f88)
[   17.808787] 5f40: c125f1ac 00000001 00000000 00000000 c324de80 c039963c c204e8c0 c1e08f18
[   17.817924] 5f60: c1d416a8 c204d036 00000000 00000000 05f0567c f0865f90 c125f1ac c125f1b0
[   17.827049] 5f80: 600b0013 ffffffff
[   17.830939]  __irq_svc from default_idle_call+0x20/0x2d8
[   17.836877]  default_idle_call from do_idle+0x22c/0x2e0
[   17.842718]  do_idle from cpu_startup_entry+0x18/0x1c
[   17.848362]  cpu_startup_entry from secondary_start_kernel+0x134/0x154
[   17.855659]  secondary_start_kernel from 0x3019a0
[   17.860914] CPU3: stopping
[   17.863932] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G      D W          6.3.0-rc1 #1
[   17.872488] Hardware name: Rockchip (Device Tree)
[   17.877738]  unwind_backtrace from show_stack+0x10/0x14
[   17.883579]  show_stack from dump_stack_lvl+0x58/0x70
[   17.889224]  dump_stack_lvl from do_handle_IPI+0x360/0x394
[   17.895357]  do_handle_IPI from ipi_handler+0x18/0x20
[   17.901001]  ipi_handler from handle_percpu_devid_irq+0xc4/0x330
[   17.907715]  handle_percpu_devid_irq from generic_handle_domain_irq+0x28/0x38
[   17.915692]  generic_handle_domain_irq from gic_handle_irq+0x88/0xa8
[   17.922794]  gic_handle_irq from generic_handle_arch_irq+0x34/0x44
[   17.929701]  generic_handle_arch_irq from call_with_stack+0x18/0x20
[   17.936708]  call_with_stack from __irq_svc+0x9c/0xb8
[   17.942351] Exception stack(0xf0869f40 to 0xf0869f88)
[   17.947992] 9f40: c125f1ac 00000001 00000000 00000000 c324ee40 c039963c c204e8c0 c1e08f18
[   17.957129] 9f60: c1d416a8 c204d036 00000000 00000000 05efe784 f0869f90 c125f1ac c125f1b0
[   17.966264] 9f80: 60010013 ffffffff
[   17.970155]  __irq_svc from default_idle_call+0x20/0x2d8
[   17.976091]  default_idle_call from do_idle+0x22c/0x2e0
[   17.981934]  do_idle from cpu_startup_entry+0x18/0x1c
[   17.987579]  cpu_startup_entry from secondary_start_kernel+0x134/0x154
[   17.994876]  secondary_start_kernel from 0x3019a0
[   18.000135] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b ]---