Bad mode in Synchronous Abort handler detected on TX2

Autonomous Machines Jetson & Embedded Systems Jetson TX2
1

Hi,

I am accessing a Xilinx Evaluation board with a customer firmware via PCIe on a Jetson TX2 evaluation board.

I have no problem of reading and writing to the FPGA when accessing “moderately”, but when the access is more “rapidly” the following dump is provided hereafter. I have found the following solution https://devtalk.nvidia.com/default/topic/996441/?comment=5095529 but when I tried to run it on my board I got a Machine Check, listed hereafter.

[  557.826278] Bad mode in Synchronous Abort handler detected, code 0x86000006 -- IABT (current EL)
[  557.835049] Internal error: Oops - bad mode: 0 [#1] PREEMPT SMP
[  557.840955] Modules linked in: fuse bnep hci_uart bluetooth mcdgdriver(O) bcmdhd hi8435rada(O) pci_tegra bluedroid_pm
[  557.851656] CPU: 4 PID: 781 Comm: threadCollectfu Tainted: G           O    4.4.38-DTRE-v0.1 #15
[  557.860423] Hardware name: quill (DT)
[  557.864077] task: ffffffc1e13fcb00 ti: ffffffc1debe0000 task.ti: ffffffc1debe0000
[  557.871543] PC is at 0x0
[  557.874069] LR is at 0x0
[  557.876595] pc : [<0000000000000000>] lr : [<0000000000000000>] pstate: 80000045
[  557.883974] sp : ffffffc1debe3da0
[  557.887278] x29: 0000000000000000 x28: 0000000000000000
[  557.892599] x27: 0000000000000000 x26: 0000000800094800
[  557.897921] x25: 490000008100933a x24: 0000000000000000
[  557.903242] x23: 0000000000000000 x22: 0000000000000000
[  557.908563] x21: 0000000000000000 x20: 0000000000000000
[  557.913882] x19: 0000000000000000 x18: 0000000000000000
[  557.919202] x17: 000000000000000a x16: ffffffc000b57618
[  557.924520] x15: 0000000000000fc5 x14: 000000000000f56a
[  557.929839] x13: 2033207463656c6c x12: 000000000030450b
[  557.935157] x11: 0000000000000000 x10: 00000000000008a0
[  557.940477] x9 : ffffffc1debe3980 x8 : ffffffc1e13fd400
[  557.945795] x7 : 0000000000000400 x6 : 0000000001b30618
[  557.951116] x5 : 0000000000000000 x4 : ffffffc1debe3950
[  557.956437] x3 : 0000000000000000 x2 : ffffffc1e29b9a4c
[  557.961757] x1 : 0000000000000000 x0 : 0000000000000010
[  557.967077]
[  557.968564] Process threadCollectfu (pid: 781, stack limit = 0xffffffc1debe0020)
[  557.975943] Call trace:
[  557.978384] [<          (null)>]           (null)
[  557.983078] ---[ end trace a3103786846738ef ]---
[  557.988950] Unable to handle kernel paging request at virtual address 0024d73f
[  557.996157] pgd = ffffffc001486000
[  557.999550] [0024d73f] *pgd=000000026cdd6003, *pud=000000026cdd6003, *pmd=000000026bf74003, *pte=00e80000960fd70f
[  558.009833] Internal error: Oops: 96000006 [#2] PREEMPT SMP
[  558.015391] Modules linked in: fuse bnep hci_uart bluetooth mcdgdriver(O) bcmdhd hi8435rada(O) pci_tegra bluedroid_pm
[  558.026087] CPU: 4 PID: 781 Comm: threadCollectfu Tainted: G      D    O    4.4.38-DTRE-v0.1 #15
[  558.034852] Hardware name: quill (DT)
[  558.038505] task: ffffffc1e13fcb00 ti: ffffffc1debe0000 task.ti: ffffffc1debe0000
[  558.045974] PC is at __wake_up_common+0x28/0xa0
[  558.050495] LR is at __wake_up_locked+0x14/0x20
[  558.055013] pc : [<ffffffc0000e7c80>] lr : [<ffffffc0000e7d74>] pstate: a00001c5
[  558.062393] sp : ffffffc1debe3a50
[  558.065699] x29: ffffffc1debe3a50 x28: ffffffc1debe0000
[  558.071020] x27: 0000000000000000 x26: 0000000800094800
[  558.076339] x25: ffffffc1e13fcb00 x24: 00000000000001c0
[  558.081659] x23: 0000000000000000 x22: 0000000000000000
[  558.086980] x21: 0000000000000000 x20: ffffffc1debe3eb0
[  558.092301] x19: ffffffc1debe3ea8 x18: 0000000000000000
[  558.097622] x17: 000000000000000a x16: ffffffc000b57618
[  558.102941] x15: 0000000000000000 x14: ffffffc1c9fb4299
[  558.108261] x13: ffffffc1c9fb4295 x12: 0000000000000000
[  558.113581] x11: 0101010101010101 x10: 7f7f7f7f7f7f7f7f
[  558.118900] x9 : fefefefefefefeff x8 : 7f7f7f7f7f7f7f7f
[  558.124219] x7 : 09432c2f35363230 x6 : 00000001f4b41000
[  558.129539] x5 : 0000000000000000 x4 : 000000000024d73f
[  558.134857] x3 : 0000000000000000 x2 : 0000000000000001
[  558.140176] x1 : 0000000000000003 x0 : ffffffc1debe3ea8
[  558.145495]
[  558.146981] Process threadCollectfu (pid: 781, stack limit = 0xffffffc1debe0020)
[  558.154360] Call trace:
[  558.156800] [<ffffffc0000e7c80>] __wake_up_common+0x28/0xa0
[  558.162359] [<ffffffc0000e7d74>] __wake_up_locked+0x14/0x20
[  558.167921] [<ffffffc0000e85c0>] complete+0x40/0x60
[  558.172790] [<ffffffc0000a161c>] mm_release+0x74/0x118
[  558.177917] [<ffffffc0000a5d68>] do_exit+0x118/0x9d8
[  558.182873] [<ffffffc000089628>] bug_handler.part.1+0x0/0x80
[  558.188519] [<ffffffc0000896f4>] arm64_notify_die+0x1c/0x60
[  558.194080] [<ffffffc000089948>] bad_mode+0x80/0x90
[  558.198945] [<          (null)>]           (null)
[  558.203639] ---[ end trace a3103786846738f0 ]---
[  558.209526] Fixing recursive fault but reboot is needed!

nvidia@tegra-ubuntu:~$ sudo busybox devmem 0x010038ac w
[sudo] password for nvidia:
[ 1523.962932] CPU4: SError detected, daif=140, spsr=0x60000000, mpidr=80000102, esr=bf000000
[ 1523.964113] CPU3: SError detected, daif=1c0, spsr=0x800000c5, mpidr=80000101, esr=bf40c000
[ 1523.964117] CPU5: SError detected, daif=1c0, spsr=0x800000c5, mpidr=80000103, esr=bf40c000
[ 1523.964122] CPU0: SError detected, daif=1c0, spsr=0x800000c5, mpidr=80000100, esr=bf40c000
[ 1523.964140] **************************************
[ 1523.964144] CPU3 Machine check error in AXI2APB@0x23a0000:
[ 1523.964151] Raw FIFO Entry: 0
[ 1523.964153]  ADDR: 0x410038ac
[ 1523.964155]  STAT: 0x1868142
[ 1523.964156] --------------------------------------
[ 1523.964158] Decoded FIFO Entry: 0
[ 1523.964159]  Direction: READ
[ 1523.964161]  Bridge ID: 0x2
[ 1523.964163]  Error Type: 0xa -- Address decode error generated by bridge
[ 1523.964165]  Length: 0
[ 1523.964168]  Protection: 0x2 -- Unprivileged, Non-Secure, Data Access
[ 1523.964170]  Source ID: 0x1 -- CCPLEX
[ 1523.964172]  AXI_ID: 0x6 -- A57 Core 2
[ 1523.964174]  Cache: 0x0 -- Strongly Ordered
[ 1523.964176]  Burst: 0x1
[ 1523.964233]  Address: 0x10038ac (Unknown Device)
[ 1523.964235] **************************************
[ 1523.965802] ROC:IOB Machine Check Error:
[ 1523.965808]  Address Type = Secure DRAM
[ 1523.965814]  Address = 0x0 (Unknown Device)
[ 1523.965861] Bad mode in Error handler detected, code 0xbf40c000 -- SError
[ 1523.965865] Internal error: Oops - bad mode: 0 [#3] PREEMPT SMP
[ 1523.965886] Modules linked in: fuse bnep hci_uart bluetooth mcdgdriver(O) bcmdhd hi8435rada(O) pci_tegra bluedroid_pm
[ 1523.965893] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G      D    O    4.4.38-DTRE-v0.1 #15
[ 1523.965895] Hardware name: quill (DT)
[ 1523.965898] task: ffffffc1ececa580 ti: ffffffc1ecedc000 task.ti: ffffffc1ecedc000
[ 1523.965912] PC is at t18x_a57_enter_state+0x40/0xc8
[ 1523.965916] LR is at t18x_a57_enter_state+0x1c/0xc8
[ 1523.965919] pc : [<ffffffc00092c300>] lr : [<ffffffc00092c2dc>] pstate: 800000c5
[ 1523.965920] sp : ffffffc1ecedfed0
[ 1523.965925] x29: ffffffc1ecedfed0 x28: ffffffc1ecedc000
[ 1523.965928] x27: ffffffc1ecedff70 x26: ffffffc000b56000
[ 1523.965931] x25: 00000162dbf25b8d x24: ffffffc0013a3788
[ 1523.965934] x23: 0000000000000000 x22: ffffffc00132f3d8
[ 1523.965938] x21: 0000000000000000 x20: ffffffc00146b2d8
[ 1523.965941] x19: 0000000000000000 x18: 000000000253fb7a
[ 1523.965944] x17: 00000000013ef8b2 x16: 000000000008b8b5
[ 1523.965946] x15: 000000000133ab46 x14: 000000000133ab46
[ 1523.965949] x13: 0000000000000000 x12: ffffffc07b148c00
[ 1523.965953] x11: ffffffc1e5cdf370 x10: 00000000000008a0
[ 1523.965956] x9 : ffffffc1ecedfec0 x8 : ffffffc1ececae80
[ 1523.965959] x7 : 0000000040040000 x6 : 0014d4725dba3114
[ 1523.965963] x5 : 0000000000000017 x4 : 000000003b9aca00
[ 1523.965966] x3 : 00000000003534b3 x2 : 00000000003534b3
[ 1523.965969] x1 : 0000000000000000 x0 : 0000000000000000
[ 1523.965969]
[ 1523.965972] Process swapper/3 (pid: 0, stack limit = 0xffffffc1ecedc020)
[ 1523.965974] Call trace:
[ 1523.965979] [<ffffffc00092c300>] t18x_a57_enter_state+0x40/0xc8
[ 1523.965987] [<ffffffc0007ebb2c>] cpuidle_enter_state+0x10c/0x350
[ 1523.965989] [<ffffffc0007ebda8>] cpuidle_enter+0x18/0x20
[ 1523.965997] [<ffffffc0000e880c>] call_cpuidle+0x24/0x50
[ 1523.966000] [<ffffffc0000e8aa8>] cpu_startup_entry+0x270/0x340
[ 1523.966006] [<ffffffc00008e0ac>] secondary_start_kernel+0x12c/0x168
[ 1523.966008] [<000000008008192c>] 0x8008192c
[ 1523.966012] ---[ end trace a3103786846738f1 ]---
[ 1523.968098] Kernel panic - not syncing: Attempted to kill the idle task!
[ 1523.968103] CPU5: stopping
[ 1523.968109] CPU: 5 PID: 0 Comm: swapper/5 Tainted: G      D    O    4.4.38-DTRE-v0.1 #15
[ 1523.968110] Hardware name: quill (DT)
[ 1523.968112] Call trace:
[ 1523.968121] [<ffffffc000089378>] dump_backtrace+0x0/0xe8
[ 1523.968126] [<ffffffc000089474>] show_stack+0x14/0x20
[ 1523.968133] [<ffffffc000320d98>] dump_stack+0xa0/0xc8
[ 1523.968136] [<ffffffc00008e6d8>] handle_IPI+0x2f8/0x320
[ 1523.968140] [<ffffffc00008160c>] gic_handle_irq+0xa4/0xc0
[ 1523.968144] [<ffffffc000084740>] el1_irq+0x80/0xf8
[ 1523.968147] [<ffffffc0007ebda8>] cpuidle_enter+0x18/0x20
[ 1523.968150] [<ffffffc0000e880c>] call_cpuidle+0x24/0x50
[ 1523.968154] [<ffffffc0000e8aa8>] cpu_startup_entry+0x270/0x340
[ 1523.968156] [<ffffffc00008e0ac>] secondary_start_kernel+0x12c/0x168
[ 1523.968158] [<000000008008192c>] 0x8008192c
[ 1523.968160] CPU0: stopping
[ 1523.968165] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G      D    O    4.4.38-DTRE-v0.1 #15
[ 1523.968167] Hardware name: quill (DT)
[ 1523.968168] Call trace:
[ 1523.968174] [<ffffffc000089378>] dump_backtrace+0x0/0xe8
[ 1523.968178] [<ffffffc000089474>] show_stack+0x14/0x20
[ 1523.968182] [<ffffffc000320d98>] dump_stack+0xa0/0xc8
[ 1523.968186] [<ffffffc00008e6d8>] handle_IPI+0x2f8/0x320
[ 1523.968188] [<ffffffc00008160c>] gic_handle_irq+0xa4/0xc0
[ 1523.968191] [<ffffffc000084740>] el1_irq+0x80/0xf8
[ 1523.968195] [<ffffffc0007ebda8>] cpuidle_enter+0x18/0x20
[ 1523.968198] [<ffffffc0000e880c>] call_cpuidle+0x24/0x50
[ 1523.968201] [<ffffffc0000e8aa8>] cpu_startup_entry+0x270/0x340
[ 1523.968210] [<ffffffc000b470f0>] rest_init+0x88/0x98
[ 1523.968218] [<ffffffc0010e0968>] start_kernel+0x38c/0x3a0
[ 1523.968221] [<0000000080b4d000>] 0x80b4d000
[ 1523.971212] CPU4: stopping
[ 1523.971217] CPU: 4 PID: 1739 Comm: busybox Tainted: G      D    O    4.4.38-DTRE-v0.1 #15
[ 1523.971218] Hardware name: quill (DT)
[ 1523.971220] Call trace:
[ 1523.971226] [<ffffffc000089378>] dump_backtrace+0x0/0xe8
[ 1523.971230] [<ffffffc000089474>] show_stack+0x14/0x20
[ 1523.971233] [<ffffffc000320d98>] dump_stack+0xa0/0xc8
[ 1523.971236] [<ffffffc00008e6d8>] handle_IPI+0x2f8/0x320
[ 1523.971239] [<ffffffc00008160c>] gic_handle_irq+0xa4/0xc0
[ 1523.971242] [<ffffffc000084740>] el1_irq+0x80/0xf8
[ 1523.971247] [<ffffffc0000a8500>] irq_exit+0x88/0xe0
[ 1523.971252] [<ffffffc0000f5b20>] __handle_domain_irq+0x60/0xb8
[ 1523.971254] [<ffffffc0000815cc>] gic_handle_irq+0x64/0xc0
[ 1523.971257] [<ffffffc000084740>] el1_irq+0x80/0xf8
[ 1523.971260] [<ffffffc0000f48fc>] vprintk_emit+0x32c/0x540
[ 1523.971263] [<ffffffc0000f4c50>] vprintk_default+0x38/0x40
[ 1523.971269] [<ffffffc000171228>] printk+0x94/0xa0
[ 1523.971271] [<ffffffc0000812b8>] handle_serr+0x58/0xf8
[ 1523.971274] [<ffffffc000084944>] el0_serr+0x90/0xcc
[ 1524.540308] Rebooting in 5 seconds..

Please advise.

Igal

2

Hi,

Sorry for that we are not familiar with Xilinx’s FPGA.
Maybe you can get more information on their webpage:
https://www.xilinx.com/support/answer-navigation/embedded-systems.html

Thanks and sorry for the inconvenience.

3

AastaLLL, hi,

thanks for the reply.

Why is the FPGA is the issue? I am running the same FPGA board on a x86 machine without any issue.

Why I can’t implement your suggestion from [url]Bad mode in Error handler detected, code 0xbf000002 - Jetson TX1 - NVIDIA Developer Forums?

Do you have any idea how to start debugging this issue? what is the meaning of the problem?

Sorry for he blast of questions, but I really do not know where to start solving the issue or whom attend.

Thanks, Igal.

4

I can’t answer the question, but you could try to install package devmem2 and use this directly instead of through busybox (it might rule out the busybox implementation as being the cause):

sudo apt-get install devmem2

I could be completely wrong, but it seems that either the address being read is an issue, or the program doing the execution wants a kernel exception level which isn’t valid. In the case of an exception level which isn’t valid it would seem to be about the program reading the data, and not the data itself or the data’s address. Normally I would say that something the original program is linked to or calling could be the actual invalid code, but busybox is static and not linked to anything. I have to wonder if it is busbox itself which is at fault and needs to be modified for this hardware.

5

What does ‘accessing FPGA’ mean here? configuration space of FPGA end point or BAR registers?
Also, can you give more info about ‘moderate’ use and ‘rapid’ use?

6

vidyas, hi,

Accessing FPGA means reading/writing 64bit memory mapped registers.
Please ignore the moderate/rapid, as since then I have applied some stress tests to the memory mapped registers and verified that there is nothing wrong with accessing to the registers.
By tests I mean Read-Modify-Write-Verify.

Igal

7

I have applied some stress tests to the memory mapped registers and verified that there is nothing wrong with accessing to the registers
So, are you saying that the issue is now resolved??

8

We are getting the same error output when we run ansible fact gathering. X freezes while fact gathering and then dmesg has error messages that look exactly like that. It generates enough output the journald reports a buffer overrun.

CPU3: SError detected, daif=140, spsr=0x60000045, mpidr=80000101, esr=bf40c000
9

I think we need more info to understand this issue better.
Can you elaborate on steps being followed and the issues you are observing?

10

We run an Ansible playbook, and when it reaches the Gathering Facts stage, the machine locks up, then dmesg emits those errors.

11

BTW, since this is TX2, ‘sudo busybox devmem 0x100038ac w’ should be used instead of 0x010038ac. Can you please try with this and update your observations?

12

Hi r3082950,

Is this issue resolved? I am also running into the same error message. But I am trying to use my custom on board camera. I wrote the driver for the camera based on the instructions from Sensor development guide. The “i2c-core” calls my driver’s probe function and I get these error messages after my probe function returns

[AR0144]: probing v4l2 sensor.
[ 3.197296] ata1: SATA link down (SStatus 0 SControl 300)
[ 3.523080] tegradc 15210000.nvdisplay: fb registered
[ 3.530028] gpio tegra-gpio wake21 for gpio=121(P:1)
[ 3.536693] PD DISP0 index2 UP
[ 3.542305] PD DISP1 index3 UP
[ 3.547184] PD DISP2 index4 UP
[ 3.560600] Parent Clock set for DC plld2
[ 3.570084] tegradc 15210000.nvdisplay: hdmi: pclk:148500K, set prod-setting:prod_c_150M
[ 3.841202] ar0144 2-0010: Detected AR0144 sensor
[ 3.841207] Bad mode in Synchronous Abort handler detected, code 0x86000005 – IABT (current EL)
[ 3.841211] Internal error: Oops - bad mode: 0 [#1] PREEMPT SMP
[ 3.841214] Modules linked in:
[ 3.841219] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.4.38 #3
[ 3.841221] Hardware name: quill (DT)
[ 3.841223] task: ffffffc1ece70000 ti: ffffffc1ece78000 task.ti: ffffffc1ece78000
[ 3.841226] PC is at 0x0
[ 3.841227] LR is at 0x0
[ 3.841230] pc : [<0000000000000000>] lr : [<0000000000000000>] pstate: 80000045
[ 3.841231] sp : ffffffc1ece7bc20
[ 3.841235] x29: 0000000000000000 x28: 0000000000000000
[ 3.841238] x27: ffffffc0011e73c0 x26: ffffffc001131068
[ 3.841240] x25: 0000000000000000 x24: ffffffc0013a5000
[ 3.841243] x23: ffffffc000774fd0 x22: ffffffc1ebbacc00
[ 3.841245] x21: ffffffc1ebbacc04 x20: ffffffc000c18040
[ 3.841248] x19: ffffffc1ebbacc20 x18: 0000000000020000
[ 3.841250] x17: 0000000000004707 x16: 0000000000004707
[ 3.841252] x15: ffffffc0012341e8 x14: ffffffc0013f67d8
[ 3.841255] x13: ffffffc001234000 x12: ffffffc0013d3000
[ 3.841257] x11: 0000000000000000 x10: 0000000000000000
[ 3.841260] x9 : 000000000001682c x8 : ffffffc0013ddfcb
[ 3.841262] x7 : 0000000000000000 x6 : 000000000f0d3c7a
[ 3.841264] x5 : 0000000000000015 x4 : 0000000000000000
[ 3.841267] x3 : 0000000000000040 x2 : ffffffc1ece78000
[ 3.841269] x1 : 0000000000000000 x0 : 0000000000000000
[ 3.841269]
[ 3.841272] Process swapper/0 (pid: 1, stack limit = 0xffffffc1ece78020)
[ 3.841273] Call trace:
[ 3.841275] [< (null)>] (null)
[ 3.841285] —[ end trace 2a81feda9358a854 ]—
[ 3.842109] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
[ 3.842109]
[ 3.842113] CPU4: stopping
[ 3.842116] CPU: 4 PID: 0 Comm: swapper/4 Tainted: G D 4.4.38 #3
[ 3.842118] Hardware name: quill (DT)
[ 3.842119] Call trace:
[ 3.842127] [] dump_backtrace+0x0/0xe8
[ 3.842132] [] show_stack+0x14/0x20
[ 3.842137] [] dump_stack+0xa0/0xc8
[ 3.842141] [] handle_IPI+0x2f8/0x320
[ 3.842144] [] gic_handle_irq+0xa4/0xc0
[ 3.842146] [] el1_irq+0x80/0xf8
[ 3.842151] [] default_idle_call+0x1c/0x38
[ 3.842153] [] cpu_startup_entry+0x2f0/0x340
[ 3.842156] [] secondary_start_kernel+0x12c/0x168
[ 3.842158] [<000000008008192c>] 0x8008192c
[ 3.842160] CPU5: stopping
[ 3.842164] CPU: 5 PID: 0 Comm: swapper/5 Tainted: G D 4.4.38 #3
[ 3.842165] Hardware name: quill (DT)
[ 3.842166] Call trace:
[ 3.842171] [] dump_backtrace+0x0/0xe8
[ 3.842175] [] show_stack+0x14/0x20
[ 3.842178] [] dump_stack+0xa0/0xc8
[ 3.842181] [] handle_IPI+0x2f8/0x320
[ 3.842183] [] gic_handle_irq+0xa4/0xc0
[ 3.842186] [] el1_irq+0x80/0xf8
[ 3.842189] [] default_idle_call+0x1c/0x38
[ 3.842191] [] cpu_startup_entry+0x2f0/0x340
[ 3.842194] [] secondary_start_kernel+0x12c/0x168
[ 3.842196] [<000000008008192c>] 0x8008192c
[ 3.842198] CPU3: stopping
[ 3.842202] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G D 4.4.38 #3
[ 3.842203] Hardware name: quill (DT)
[ 3.842204] Call trace:
[ 3.842209] [] dump_backtrace+0x0/0xe8
[ 3.842212] [] show_stack+0x14/0x20
[ 3.842216] [] dump_stack+0xa0/0xc8
[ 3.842218] [] handle_IPI+0x2f8/0x320
[ 3.842220] [] gic_handle_irq+0xa4/0xc0
[ 3.842222] [] el1_irq+0x80/0xf8
[ 3.842225] [] default_idle_call+0x1c/0x38
[ 3.842227] [] cpu_startup_entry+0x2f0/0x340
[ 3.842230] [] secondary_start_kernel+0x12c/0x168
[ 3.842231] [<000000008008192c>] 0x8008192c
[ 3.842239] CPU2: stopping
[ 3.842249] CPU: 2 PID: 0 Comm: swapper/2 Tainted: G D 4.4.38 #3
[ 3.842252] Hardware name: quill (DT)
[ 3.842255] Call trace:
[ 3.842268] [] dump_backtrace+0x0/0xe8
[ 3.842274] [] show_stack+0x14/0x20
[ 3.842281] [] dump_stack+0xa0/0xc8
[ 3.842286] [] handle_IPI+0x2f8/0x320
[ 3.842291] [] gic_handle_irq+0xa4/0xc0
[ 3.842296] [] el1_irq+0x80/0xf8
[ 3.842302] [] default_idle_call+0x1c/0x38
[ 3.842306] [] cpu_startup_entry+0x2f0/0x340
[ 3.842311] [] secondary_start_kernel+0x12c/0x168
[ 3.842315] [<000000008008192c>] 0x8008192c
[ 3.842320] CPU1: stopping

13

It looks like your driver probe is trying to access some unauthorized addresses. Is it possible to share your driver with us offline?

14

For TX2i, what is the reference clock address should be used for ‘sudo busybox devmem TX2i_address w’? Thanks.

15

The address is the same as TX2