TDA4VH-Q1: Kernel panic during large NVMe read/write on PCI0

Hi Dongho,

Was the kernel panic seen before IOMMU node was added? A good experiment to do would be to see if a kernel panic is seen running the same cp command when there is no IOMMU node in devicetree.

To give some extra details, that kernel panic might happen if the driver is trying to access memory address that is inaccessible. For example, it could be that something is trying to access memory address for a hardware module within the SoC that is not turned on, or the memory is reserved for different cores, or the memory is not mapped. I see that the iommu devicetree node status is set to "disabled" and I do not see in the shared portion of devicetree a place that sets the status of iommu to "okay". So, it could be that the PCIe driver is trying to access some memory address of iommu hardware that is not enabled.

Regards,

Takuma

Hi Takuma Fujiwara 

IOMMU node was not added before the kernel panic.

A kernel panic occured duriong the cp command test, so i added iommu.

IOMMU doesn't seem to exist in tda4vh linux sdk, so I tried it with reference to ti other sdk.

In addition, I found the following improvement method through workaround.

Kernel panic occurs when buffer/cache memory is used more than about 8GB.

So, this is a method to clean by setting the buffer/cache threshold(< 8GB) through monitoring App.

I think we'll have to use this method until we find a solution.

Thanks, 

Dongho

Hi Dongho,

That is strange behavior that I have not seen before. The closest thing that I have observed in a past would be a memory leak leading to overloading the memory.

So, I have 2 questions:

• You mention in your first post "Made by New Board". Does this mean this is a custom board? And if yes, how much DDR is available on the board?
• Has the memory map been changed?

So far, I have not been able to reproduce the kernel panic on TI J784S4 EVM. I was using the 10.1 SDK instead of 9.2 SDK, so there are some differences, but I do not remember seeing kernel panic in 9.2 SDK so I assume behavior is same.

Here is the information of the file I transferred from SD card to SSD card (it is 14GB SD card image I happened to have on my PC):

root@j784s4-evm:/home/weston# ls -l
total 13912068
-rw-r--r-- 1 weston weston 14245953536 May 3 2024 tech_day_sktda4vm_robot_arm.img

And I tried copying from both SD card to SSD card, as well as SSD card back to SSD card.

Below is a screenshot of logs and some system information like "top" for CPU and running process info and "watch -n 1 cat /proc/meminfo" for monitoring the memory info:

I used the "cp" command from commandline a couple of times, but it has not failed in all of my attempts. 

Regards,

Takuma

Hi Takuma

It is designed as a custom board and uses the same memory size as the EVM. The memory map has not been modified.

If you continue to copy 2Gbyte files from nvme0 using the cp command, you can see that the "Cached" memory continues to increase.

 - file '2' size is 2Gbyte.

 1) root@j784s4-evm:/run/media/nvme0n1p1/dongho# cp 2 222

 2) root@j784s4-evm:/run/media/nvme0n1p1/dongho# cp 2 333

And when "Cached" exceeds about 8Gbyte, Kernel Panic occurs.

 - root@j784s4-evm:/run/media/nvme0n1p1/dongho# cp 2 444

Please try to continuously copy files using the cp command inside the SSD to see if the "cached" size increases and there are no issues.

Thanks,

Dongho

-----------------------------------------------------------------------------------------

* Kernel Log from "USB to COM"

-----------------------------------------------------------------------------------------

j784s4-evm login: [ 18.346250] cdns-mhdp8546 a000000.dp-bridge: invalid resource
[ 18.352002] cdns-mhdp8546 a000000.dp-bridge: Failed to get SAPB memory resource, HDCP not supported
[ 18.361044] cdns-mhdp8546 a000000.dp-bridge: no PHY configured
[ 18.366919] platform main-r5fss-cpsw9g-virt-mac1: deferred probe pending
[ 18.373611] platform main-r5fss-cpsw9g-virt-mac0: deferred probe pending
[ 18.380303] platform a000000.dp-bridge: deferred probe pending
[ 41.993729] kauditd_printk_skb: 2 callbacks suppressed
[ 41.993739] audit: type=1334 audit(1746668057.098:12): prog-id=12 op=UNLOAD
[ 42.006042] audit: type=1334 audit(1746668057.098:13): prog-id=11 op=UNLOAD
[ 604.468961] Insufficient stack space to handle exception!
[ 604.468961] Insufficient stack space to handle exception!
[ 604.468970] ESR: 0x000000009a000000 -- SP Alignment
[ 604.468975] FAR: 0x68223d736e6c80d8
[ 604.468977] Task stack: [0xffff800009328000..0xffff80000932c000]
[ 604.468979] IRQ stack: [0x68223d736e6c6d78..0x68223d736e6cad78]
[ 604.468981] Overflow stack: [0xffff000f5c374300..0xffff000f5c375300]
[ 604.468985] CPU: 1 PID: 1363 Comm: cp Tainted: G O 6.1.80-ti-g2e423244f8c0 #1
[ 604.468990] Hardware name: Texas Instruments J784S4 EVM (DT)
[ 604.468993] pstate: 200003c5 (nzCv DAIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 604.468997] pc : el1h_64_sync+0x0/0x68
[ 604.469006] lr : call_on_irq_stack+0x24/0x4c
[ 604.469011] sp : 68223d736e6c80d8
[ 604.469013] x29: ffff80000932b5e0 x28: ffff0008c6518000 x27: ffff000b585b2bc8
[ 604.469019] x26: 0000000000001000 x25: 0000000000000001 x24: fffffc002d712440
[ 604.469024] x23: 0000000020000005 x22: ffff80000829d720 x21: ffff80000932b790
[ 604.469028] x20: 0000000000000000 x19: ffff800008ff46c8 x18: 000000000046c970
[ 604.469032] x17: ffff800f53388000 x16: 68223d736e6c6d78 x15: 55746e6569646172
[ 604.469036] x14: 672022293639342e x13: 55746e6569646172 x12: 672022293639342e
[ 604.469040] x11: 6e65696461724772 x10: 61656e696c23223d x9 : 666572683a6b6e69
[ 604.469044] x8 : ffff80000831feb0 x7 : 4f65636170537265 x6 : 000000007a4a2ac3
[ 604.469048] x5 : ffff80000853f0c0 x4 : ffff80000932b5f1 x3 : ffff80000932b640
[ 604.469052] x2 : ffff80000932c000 x1 : ffff80000853f0c0 x0 : ffff80000932b640
[ 604.469057] Kernel panic - not syncing: kernel stack overflow
[ 604.469060] CPU: 1 PID: 1363 Comm: cp Tainted: G O 6.1.80-ti-g2e423244f8c0 #1
[ 604.469063] Hardware name: Texas Instruments J784S4 EVM (DT)
[ 604.469065] Call trace:
[ 604.469067] dump_backtrace.part.0+0xdc/0xf0
[ 604.469073] show_stack+0x18/0x30
[ 604.469077] dump_stack_lvl+0x68/0x84
[ 604.469084] dump_stack+0x18/0x34
[ 604.469087] panic+0x188/0x348
[ 604.469091] nmi_panic+0xac/0xb0
[ 604.469097] panic_bad_stack+0x104/0x124
[ 604.469102] handle_bad_stack+0x34/0xc0
[ 604.469106] __bad_stack+0x78/0x7c
[ 604.469109] el1h_64_sync+0x0/0x68
[ 604.469111] do_interrupt_handler+0x80/0x8c
[ 604.469115] el1_interrupt+0x34/0x70
[ 604.469118] el1h_64_irq_handler+0x18/0x2c
[ 604.469122] el1h_64_irq+0x64/0x68
[ 604.469124] __block_commit_write.constprop.0.isra.0+0xa0/0x160
[ 604.469133] generic_write_end+0x5c/0x194
[ 604.469135] ext4_da_write_end+0xfc/0x1f4
[ 604.469141] generic_perform_write+0x11c/0x1ec
[ 604.469145] ext4_buffered_write_iter+0x80/0x130
[ 604.469149] ext4_file_write_iter+0x5c/0x674
[ 604.469152] do_iter_readv_writev+0xbc/0x150
[ 604.469157] do_iter_write+0x90/0x200
[ 604.469160] vfs_iter_write+0x1c/0x30
[ 604.469163] iter_file_splice_write+0x248/0x3c0
[ 604.469167] direct_splice_actor+0x30/0x4c
[ 604.469169] splice_direct_to_actor+0xd8/0x280
[ 604.469172] do_splice_direct+0x94/0xe4
[ 604.469175] vfs_copy_file_range+0x13c/0x450
[ 604.469179] __arm64_sys_copy_file_range+0x164/0x33c
[ 604.469182] invoke_syscall+0x48/0x114
[ 604.469187] el0_svc_common.constprop.0+0xd4/0xfc
[ 604.469190] do_el0_svc+0x20/0x30
[ 604.469194] el0_svc+0x28/0xa0
[ 604.469197] el0t_64_sync_handler+0xbc/0x140
[ 604.469201] el0t_64_sync+0x18c/0x190
[ 604.469205] SMP: stopping secondary CPUs
[ 604.469213] Insufficient stack space to handle exception!
[ 604.469216] ESR: 0x000000009a000000 -- SP Alignment
[ 604.469219] FAR: 0x68223d736e6c80d8
[ 604.469220] Task stack: [0xffff800009140000..0xffff800009144000]
[ 604.469219] Unable to handle kernel paging request at virtual address ffff800010d714a0
[ 604.469220] Unable to handle kernel paging request at virtual address ffff8003ac201ea0
[ 604.469223] IRQ stack: [0x68223d736e6c6d78..0x68223d736e6cad78]
[ 604.469225] Mem abort info:
[ 604.469225] Overflow stack: [0xffff000f5c360300..0xffff000f5c361300]
[ 604.469226] ESR = 0x0000000096000007
[ 604.469227] Unable to handle kernel paging request at virtual address ffff7ffffa2c85d8
[ 604.469228] EC = 0x25: DABT (current EL), IL = 32 bits
[ 604.469227] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G O 6.1.80-ti-g2e423244f8c0 #1
[ 604.469229] Mem abort info:
[ 604.469230] ESR = 0x0000000096000004
[ 604.469231] SET = 0, FnV = 0
[ 604.469231] Hardware name: Texas Instruments J784S4 EVM (DT)
[ 604.469232] EA = 0, S1PTW = 0
[ 604.469232] EC = 0x25: DABT (current EL), IL = 32 bits
[ 604.469233] pstate: 200003c5 (nzCv DAIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 604.469234] FSC = 0x07: level 3 translation fault
[ 604.469235] SET = 0, FnV = 0
[ 604.469236] Data abort info:
[ 604.469236] EA = 0, S1PTW = 0
[ 604.469237] ISV = 0, ISS = 0x00000007
[ 604.469237] FSC = 0x04: level 0 translation fault
[ 604.469236] pc : el1h_64_sync+0x0/0x68
[ 604.469239] Data abort info:
[ 604.469239] CM = 0, WnR = 0
[ 604.469240] ISV = 0, ISS = 0x00000004
[ 604.469240] lr : call_on_irq_stack+0x24/0x4c
[ 604.469242] CM = 0, WnR = 0
[ 604.469241] swapper pgtable: 4k pages, 48-bit VAs, pgdp=0000000082f40000
[ 604.469243] swapper pgtable: 4k pages, 48-bit VAs, pgdp=0000000082f40000
[ 604.469244] sp : 68223d736e6c80d8
[ 604.469244] [ffff800010d714a0] pgd=1000000ffffff003
[ 604.469245] x29: ffff800009143bb0
[ 604.469246] [ffff7ffffa2c85d8] pgd=0000000000000000
[ 604.469246] , p4d=1000000ffffff003

Hi Dongho,

I am still not seeing it. I tried multiple times and was able to get the cache up to 28GB. I tried stress testing by starting 3x cp commands in parallel but no kernel panic observed yet.

I was trying initially on 10.1 SDK since that was the version I had flashed, but I also tried 9.2 SDK in case that was the cause of us seeing different behavior. However, in both cases, I cannot recreate the issue you are seeing. 

So, a couple of different questions I have for you:

• Can you try your experiment on a TI J784S4 EVM board to see if you can see the same issue on the TI board?
• Are there any other applications running in parallel when you are doing the cp? 

Regards,

Takuma

Hi Takuma

Sorry, I don't have an EVM board, and when "CP command" testing, no other apps were running at all.

I think we need to review the System Memory Map. 

Thanks,

Dongho

Hi Dongho,

Ok, understood.

With current information, a bit hard to pinpoint what the issue could be. However, one hypothesis I can suggest is DDR. If your custom board design is similar to TI J784S4 EVM, then I assume there are 4 x 8GB DDR. If there is no DDR interleaving, then it could be that when 8GB is reached it accesses a new DDR instance, and there is some issues with the second DDR. For this, there is a memtester binary that we package in with the default SDK image. I am not too savvy with DDR testing, so I am not sure how aggressively the memtester tool checks DDR, but this is something you can try relatively easily to troubleshoot the issue.

Additionally, as you mentioned, System Memory Map could also be causing issues, so reviewing it will be good as well.

Regards,

Takuma

Hi Takuma, a new week is beginning. 

First at all the RAM design is the same as the EVM, LPDDR4(8G) x 4.

 - RAM Part Num : MT53E2G32D4DT-046

If I can test DDR interleaving through memtester, I will do so and share it.

Could you share how to use memtester? I think it needs to be run on uboot.

Thanks, 

Dongho

Hi 

Additionally when I run memtester as below, a problem occurs.

There is no problem up to 8G of memory area, but when testing by increasing the area to 9G, a problem occurs.

HW engineer said that the Board is designed with 8GB x 4ea, which is the same as EVM, so I think I will have to try debugging the HW.

But just in case, is there anything I should check first in SW?

The memory settings in the k3-j784s4-evm.dts file are the same as in EVM.

   memory@80000000 {
         device_type = "memory";
         /* 32G RAM */
         reg = <0x00 0x80000000 0x00 0x80000000>,
         <0x08 0x80000000 0x07 0x80000000>;
  };

------------------------------------------------------------------------------------------

Test Logs

------------------------------------------------------------------------------------------

root@j784s4-evm:~# sudo memtester 8G 1
memtester version 4.5.1 (64-bit)
Copyright (C) 2001-2020 Charles Cazabon.
Licensed under the GNU General Public License version 2 (only).

pagesize is 4096
pagesizemask is 0xfffffffffffff000
want 8192MB (8589934592 bytes)
got 8192MB (8589934592 bytes), trying mlock ...locked.
Loop 1/1:
Stuck Address : ok
Random Value : ok
Compare XOR : ok
Compare SUB : ok
Compare MUL : ok
Compare DIV : ok
Compare OR : ok
Compare AND : ok
Sequential Increment: ok
Solid Bits : testing 7^C

------------------------------------------------------------------------------------------
root@j784s4-evm:~#
root@j784s4-evm:~#
root@j784s4-evm:~# sudo memtester 9G 1
memtester version 4.5.1 (64-bit)
Copyright (C) 2001-2020 Charles Cazabon.
Licensed under the GNU General Public License version 2 (only).

pagesize is 4096
pagesizemask is 0xfffffffffffff000
want 9216MB (9663676416 bytes)
got 9216MB (9663676416 bytes), trying mlock ...[13206.902256] Insufficient stack space to handle exception!
[13206.902267] ESR: 0x0000000096000046 -- DABT (current EL)
[13206.902272] FAR: 0x0000000000000100
[13206.902274] Task stack: [0xffff80000e410000..0xffff80000e414000]
[13206.902274] Insufficient stack space to handle exception!
[13206.902276] IRQ stack: [0x0000000000000000..0x0000000000004000]
[13206.902279] Overflow stack: [0xffff000f5c3b0300..0xffff000f5c3b1300]
[13206.902280] ESR: 0x0000000096000045 -- DABT (current EL)
[13206.902284] FAR: 0x0000000000000100
[13206.902286] Task stack: [0xffff800009140000..0xffff800009144000]
[13206.902283] CPU: 0 PID: 3407 Comm: memtester Tainted: G O 6.1.80-ti-g2e423244f8c0 #1
[13206.902288] IRQ stack: [0x0000000000000000..0x0000000000004000]
[13206.902290] Hardware name: Texas Instruments J784S4 EVM (DT)
[13206.902290] Overflow stack: [0xffff000f5c360300..0xffff000f5c361300]
[13206.902293] pstate: 200003c5 (nzCv DAIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[13206.902295] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G O 6.1.80-ti-g2e423244f8c0 #1
[13206.902300] Hardware name: Texas Instruments J784S4 EVM (DT)
[13206.902302] pstate: 200003c5 (nzCv DAIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[13206.902299] pc : el1h_64_sync+0x0/0x68
[13206.902306] pc : el1h_64_sync+0x0/0x68
[13206.902309] lr : call_on_irq_stack+0x24/0x4c
[13206.902315] sp : 0000000000000100
[13206.902313] lr : call_on_irq_stack+0x24/0x4c
[13206.902318] x29: ffff80000e4138b0
[13206.902319] sp : 0000000000000100
[13206.902320] x28: ffff0008c13b0000
[13206.902321] x29: ffff800009143bb0
[13206.902323] x27: 0000000000000013 x28: ffff8000091529c0
[13206.902325]
[13206.902326] x26: ffff0008c6720cc0
[13206.902327] x27: 00000000ffec880c
[13206.902329] x25: ffff0008bdfb8700
[13206.902331] x26: ffff8000091529c0
[13206.902332] x24: 0000040000000000 x25: 0000000000000000
[13206.902334]
[13206.902336] x23: 0000000000000005
[13206.902336] x24: 0000000000000000 x22: ffff800008b2a8bc
[13206.902338]
[13206.902340] x23: 0000000060000005
[13206.902340] x21: ffff80000e413a60 x22: ffff800008b6c5bc
[13206.902343]
[13206.902345] x20: 0000000000000000
[13206.902345] x21: ffff800009143d60
[13206.902347]
[13206.902347] x19: ffff800008ff46c8
[13206.902349] x20: 0000000000000000
[13206.902350] x18: 000000000046bc8a x19: ffff800008ff46c8
[13206.902353]
[13206.902354] x17: ffff800f533c4000
[13206.902354] x18: 0000000000000000
[13206.902357] x16: 0000000000000000
[13206.902357] x17: ffff800f53374000 x15: 0000000000000000
[13206.902360] x16: 0000000000000000
[13206.902362] x15: 0000ffff6b2dd608
[13206.902362] x14: 0000000000000001
[13206.902365] x13: 0000000000000002
[13206.902366] x14: 00000000000003f1 x12: ffff800009265728
[13206.902368] x13: 0000000000000001
[13206.902369]
[13206.902371] x11: ffff800009265708
[13206.902370] x12: 0000000000000000
[13206.902373] x10: 0000000000000080
[13206.902374] x11: 0000000000000001 x9 : ffff8000092656e8
[13206.902376] x10: 00000000000009b0
[13206.902377]
[13206.902378] x9 : ffff800009143ce0
[13206.902379] x8 : 0000000000000001
[13206.902381]
[13206.902381] x7 : ffff800f533c4000
[13206.902383] x8 : ffff8000091533d0 x6 : 000004525edb76ee
[13206.902385] x7 : 00000000000000c0
[13206.902387]
[13206.902388] x6 : 000004525edb76ee
[13206.902388] x5 : ffff80000853f0c0
[13206.902391] x4 : ffff80000e4138c1
[13206.902392] x5 : ffff80000853f0c0 x3 : ffff80000e413910
[13206.902394] x4 : ffff800009143bc1
[13206.902396] x3 : ffff800009143c10
[13206.902396] x2 : ffff80000e414000
[13206.902399]
[13206.902400] x1 : ffff80000853f0c0
[13206.902400] x2 : ffff800009144000
[13206.902402] x1 : ffff80000853f0c0
[13206.902403] x0 : ffff80000e413910 x0 : ffff800009143c10
[13206.902405]
[13206.902406]
[13206.902409] Kernel panic - not syncing: kernel stack overflow
[13206.902412] CPU: 0 PID: 3407 Comm: memtester Tainted: G O 6.1.80-ti-g2e423244f8c0 #1
[13206.902416] Hardware name: Texas Instruments J784S4 EVM (DT)
[13206.902418] Call trace:
[13206.902419] dump_backtrace.part.0+0xdc/0xf0
[13206.902426] show_stack+0x18/0x30
[13206.902430] dump_stack_lvl+0x68/0x84
[13206.902435] dump_stack+0x18/0x34
[13206.902439] panic+0x188/0x348
[13206.902443] nmi_panic+0xac/0xb0
[13206.902448] panic_bad_stack+0x104/0x124
[13206.902453] handle_bad_stack+0x34/0xc0
[13206.902457] __bad_stack+0x78/0x7c
[13206.902460] el1h_64_sync+0x0/0x68
[13206.902462] do_interrupt_handler+0x80/0x8c
[13206.902465] el1_interrupt+0x34/0x70
[13206.902469] el1h_64_irq_handler+0x18/0x2c
[13206.902474] el1h_64_irq+0x64/0x68
[13206.902476] clear_page+0x18/0x4c
[13206.902481] do_huge_pmd_anonymous_page+0x21c/0x7f0
[13206.902487] __handle_mm_fault+0x430/0xc10
[13206.902491] handle_mm_fault+0xec/0x280
[13206.902494] __get_user_pages+0x200/0x3a0
[13206.902499] populate_vma_page_range+0x58/0x74
[13206.902504] __mm_populate+0xb4/0x190
[13206.902508] do_mlock+0xd0/0x254
[13206.902511] __arm64_sys_mlock+0x18/0x30
[13206.902514] invoke_syscall+0x48/0x114
[13206.902519] el0_svc_common.constprop.0+0xd4/0xfc
[13206.902522] do_el0_svc+0x20/0x30
[13206.902526] el0_svc+0x28/0xa0
[13206.902529] el0t_64_sync_handler+0xbc/0x140
[13206.902534] el0t_64_sync+0x18c/0x190
[13206.902537] SMP: stopping secondary CPUs
[13206.902544] Insufficient stack space to handle exception!
[13206.902546] Insufficient stack space to handle exception!
[13206.902546] Insufficient stack space to handle exception!
[13206.902546] Insufficient stack space to handle exception!
[13206.902547] Insufficient stack space to handle exception!
[13206.902547] Insufficient stack space to handle exception!
[13206.902548] ESR: 0x0000000096000046 -- DABT (current EL)
[13206.902550] ESR: 0x0000000096000046 -- DABT (current EL)
[13206.902551] FAR: 0x0000000000000100
[13206.902551] ESR: 0x0000000096000046 -- DABT (current EL)
[13206.902551] ESR: 0x0000000096000046 -- DABT (current EL)
[13206.902551] ESR: 0x0000000096000046 -- DABT (current EL)
[13206.902552] ESR: 0x0000000096000045 -- DABT (current EL)
[13206.902554] FAR: 0x0000000000000100
[13206.902554] Task stack: [0xffff8000093e8000..0xffff8000093ec000]
[13206.902554] FAR: 0x0000000000000100
[13206.902554] FAR: 0x0000000000000100
[13206.902555] FAR: 0x0000000000000100
[13206.902555] FAR: 0x0000000000000100
[13206.902556] Task stack: [0xffff8000093d8000..0xffff8000093dc000]
[13206.902557] Task stack: [0xffff800009618000..0xffff80000961c000]
[13206.902557] IRQ stack: [0x0000000000000000..0x0000000000004000]
[13206.902557] Task stack: [0xffff800009610000..0xffff800009614000]
[13206.902557] Task stack: [0xffff800009608000..0xffff80000960c000]
[13206.902558] Task stack: [0xffff8000093e0000..0xffff8000093e4000]
[13206.902559] IRQ stack: [0x0000000000000000..0x0000000000004000]
[13206.902560] IRQ stack: [0x0000000000000000..0x0000000000004000]
[13206.902560] Overflow stack: [0xffff000f5c39c300..0xffff000f5c39d300]
[13206.902561] IRQ stack: [0x0000000000000000..0x0000000000004000]
[13206.902561] IRQ stack: [0x0000000000000000..0x0000000000004000]
[13206.902562] IRQ stack: [0x0000000000000000..0x0000000000004000]
[13206.902562] Overflow stack: [0xffff000f5c3ec300..0xffff000f5c3ed300]
[13206.902562] Overflow stack: [0xffff000f5c374300..0xffff000f5c375300]
[13206.902563] Overflow stack: [0xffff000f5c3d8300..0xffff000f5c3d9300]
[13206.902563] CPU: 0 PID: 0 Comm: swapper/3 Tainted: G O 6.1.80-ti-g2e423244f8c0 #1
[13206.902565] Overflow stack: [0xffff000f5c3c4300..0xffff000f5c3c5300]
[13206.902565] Overflow stack: [0xffff000f5c388300..0xffff000f5c389300]
[13206.902566] CPU: 0 PID: 0 Comm: swapper/7 Tainted: G O 6.1.80-ti-g2e423244f8c0 #1
[13206.902566] CPU: 0 PID: 0 Comm: swapper/1 Tainted: G O 6.1.80-ti-g2e423244f8c0 #1
[13206.902568] Hardware name: Texas Instruments J784S4 EVM (DT)
[13206.902567] CPU: 0 PID: 0 Comm: swapper/6 Tainted: G O 6.1.80-ti-g2e423244f8c0 #1
[13206.902568] CPU: 0 PID: 0 Comm: swapper/2 Tainted: G O 6.1.80-ti-g2e423244f8c0 #1
[13206.902570] Hardware name: Texas Instruments J784S4 EVM (DT)
[13206.902569] CPU: 0 PID: 0 Comm: swapper/5 Tainted: G O 6.1.80-ti-g2e423244f8c0 #1
[13206.902571] Hardware name: Texas Instruments J784S4 EVM (DT)
[13206.902571] pstate: 200003c5 (nzCv DAIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[13206.902572] Hardware name: Texas Instruments J784S4 EVM (DT)
[13206.902573] Hardware name: Texas Instruments J784S4 EVM (DT)
[13206.902573] pstate: 200003c5 (nzCv DAIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[13206.902574] Hardware name: Texas Instruments J784S4 EVM (DT)
[13206.902574] pstate: 200003c5 (nzCv DAIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[13206.902575] pstate: 200003c5 (nzCv DAIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[13206.902576] pstate: 200003c5 (nzCv DAIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[13206.902575] pc : el1h_64_sync+0x0/0x68
[13206.902578] pstate: 200003c5 (nzCv DAIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[13206.902578] pc : el1h_64_sync+0x0/0x68
[13206.902579] pc : el1h_64_sync+0x0/0x68
[13206.902580] lr : call_on_irq_stack+0x24/0x4c
[13206.902579] pc : el1h_64_sync+0x0/0x68
[13206.902580] pc : el1h_64_sync+0x0/0x68
[13206.902582] lr : call_on_irq_stack+0x24/0x4c
[13206.902582] pc : el1h_64_sync+0x0/0x68
[13206.902584] sp : 0000000000000100
[13206.902584] lr : call_on_irq_stack+0x24/0x4c
[13206.902584] lr : call_on_irq_stack+0x24/0x4c
[13206.902585] lr : call_on_irq_stack+0x24/0x4c
[13206.902586] x29: ffff8000093ebc40
[13206.902587] sp : 0000000000000100
[13206.902588] sp : 0000000000000100
[13206.902587] lr : call_on_irq_stack+0x24/0x4c
[13206.902589] x28: ffff0008bc2f0e40
[13206.902589] sp : 0000000000000100
[13206.902590] sp : 0000000000000100
[13206.902590] x29: ffff8000093dbc40
[13206.902590] x29: ffff80000961bc40
[13206.902592] sp : 0000000000000100
[13206.902592] x29: ffff8000093e3c40
[13206.902592] x29: ffff800009613c40
[13206.902592] x27: 0000000000000000
[13206.902593] x28: ffff0008bc2de3c0
[13206.902594] x28: ffff0008bc2f4740
[13206.902595]
[13206.902595] x29: ffff80000960bc40
[13206.902595] x28: ffff0008bc2f3900
[13206.902595] x28: ffff0008bc2f0000
[13206.902596] x27: 0000000000000000
[13206.902597] x27: 0000000000000000
[13206.902598] x26: ffff0008bc2f0e40
[13206.902599] x28: ffff0008bc2f2ac0
[13206.902599]
[13206.902599] x27: 0000000000000000
[13206.902600] x27: 0000000000000000
[13206.902600]
[13206.902601] x25: 0000000000000000
[13206.902602] x27: 0000000000000000
[13206.902602] x26: ffff0008bc2de3c0
[13206.902602]
[13206.902602] x26: ffff0008bc2f4740
[13206.902604] x24: 0000000000000000
[13206.902604]
[13206.902605] x25: 0000000000000000
[13206.902605] x26: ffff0008bc2f0000
[13206.902605]
[13206.902606] x25: 0000000000000000
[13206.902607]
[13206.902607] x26: ffff0008bc2f3900
[13206.902608] x24: 0000000000000000
[13206.902608] x25: 0000000000000000
[13206.902608] x26: ffff0008bc2f2ac0
[13206.902610] x24: 0000000000000000
[13206.902610] x23: 0000000060000005
[13206.902611]
[13206.902611] x25: 0000000000000000
[13206.902611] x24: 0000000000000000
[13206.902611] x25: 0000000000000000
[13206.902612] x22: ffff800008b6c5bc
[13206.902613]
[13206.902613] x23: 0000000060000005
[13206.902614] x24: 0000000000000000
[13206.902614]
[13206.902615] x23: 0000000060000005
[13206.902615] x24: 0000000000000000
[13206.902615] x21: ffff8000093ebdf0
[13206.902618]
[13206.902618]
[13206.902617] x22: ffff800008b6c5bc
[13206.902618] x23: 0000000060000005
[13206.902619] x22: ffff800008b6c5bc
[13206.902619]
[13206.902620] x20: 0000000000000000
[13206.902620] x23: 0000000060000005
[13206.902622] x23: 0000000060000005
[13206.902621] x22: ffff800008b6c5bc
[13206.902621] x21: ffff8000093dbdf0
[13206.902622] x21: ffff80000961bdf0
[13206.902623] x22: ffff800008b6c5bc
[13206.902623] x19: ffff800008ff46c8
[13206.902624] x22: ffff800008b6c5bc
[13206.902625]
[13206.902625]
[13206.902625] x21: ffff8000093e3df0
[13206.902626] x18: 0000000000000000
[13206.902627] x21: ffff800009613df0
[13206.902627] x20: 0000000000000000
[13206.902627] x20: 0000000000000000
[13206.902627] x21: ffff80000960bdf0
[13206.902628]
[13206.902630]
[13206.902629] x19: ffff800008ff46c8
[13206.902630]
[13206.902631] x20: 0000000000000000
[13206.902631]
[13206.902631] x19: ffff800008ff46c8
[13206.902632] x17: ffff800f533b0000
[13206.902633] x18: 0000000000000000
[13206.902633] x20: 0000000000000000
[13206.902633] x20: 0000000000000000
[13206.902634] x19: ffff800008ff46c8
[13206.902634] x18: 0000000000000000
[13206.902634] x16: 0000000000000000
[13206.902636]
[13206.902636] x19: ffff800008ff46c8
[13206.902636] x19: ffff800008ff46c8
[13206.902637]
[13206.902637] x18: 0000000000000000
[13206.902638] x17: ffff800f53400000
[13206.902638] x15: 00000000353f70d0
[13206.902640]
[13206.902639] x17: ffff800f53388000
[13206.902639] x18: 0000000000000000
[13206.902639] x18: 0000000000000000
[13206.902641] x16: 0000000000000000
[13206.902642]
[13206.902643]
[13206.902643] x17: ffff800f5339c000
[13206.902643] x16: 0000000000000000
[13206.902643]
[13206.902644] x15: 0000000000000000
[13206.902644] x14: 0000000000000264
[13206.902645] x17: ffff800f533ec000
[13206.902645] x17: ffff800f533d8000
[13206.902646]
[13206.902646] x15: 00000000353e9c40
[13206.902646] x16: 0000000000000000
[13206.902647] x13: 0000000000000001
[13206.902647] x16: 0000000000000000
[13206.902647] x16: 0000000000000000
[13206.902649] x14: 00000000000003d0
[13206.902650] x15: 00000006d999e3f6
[13206.902650]
[13206.902650] x15: 0000000000000000
[13206.902650] x12: 0000000000000000
[13206.902651] x15: 00000002ef8b188e
[13206.902653]
[13206.902653]
[13206.902653] x14: 00000000000000e9
[13206.902653]
[13206.902653] x13: 0000000000000001
[13206.902655]
[13206.902656] x14: 00000000000003df
[13206.902656] x11: 0000000000000001
[13206.902656] x14: 0000000000000365
[13206.902656] x13: 0000000000000001
[13206.902656] x14: 00000bbf26e5eada
[13206.902656] x12: 0000000000000000
[13206.902659]
[13206.902658] x10: 00000000000009b0
[13206.902660] x12: 0000000000000000
[13206.902658] x13: 0000000000000001
[13206.902660] x13: 0000000000000001
[13206.902660] x13: 0000000000000001
[13206.902662] x11: 0000000000000001
[13206.902662]
[13206.902662] x9 : ffff8000093ebd70
[13206.902663] x12: 0000000000000000
[13206.902663] x12: 0000000000000001
[13206.902664] x12: 0000000000000000
[13206.902665] x11: 0000000000000001
[13206.902665] x10: 00000000000009b0
[13206.902666]
[13206.902667]
[13206.902667]
[13206.902668]
[13206.902668] x10: 00000000000009b0
[13206.902668] x8 : ffff0008bc2f1850
[13206.902669] x11: 0000000000000001
[13206.902668] x9 : ffff80000961bd70
[13206.902669] x11: 0000000000000001
[13206.902670] x11: 0000000000000001
[13206.902671] x7 : 00000000000000c0
[13206.902672] x10: 00000000000009b0
[13206.902672]
[13206.902671] x9 : ffff8000093dbd70
[13206.902672] x10: 00000000000009b0
[13206.902672] x10: 00000000000009b0
[13206.902674] x6 : 000004525edb76ee
[13206.902675] x8 : ffff0008bc2f5150
[13206.902676] x9 : ffff800009613d70
[13206.902675] x9 : ffff8000093e3d70
[13206.902676]
[13206.902676] x9 : ffff80000960bd70
[13206.902677]
[13206.902678] x7 : 0000000000000000
[13206.902679]
[13206.902679]
[13206.902680]
[13206.902679] x8 : ffff0008bc2dedd0
[13206.902679] x5 : ffff80000853f0c0
[13206.902681] x8 : ffff0008bc2f4310
[13206.902681] x6 : 000004525edb76ee
[13206.902682] x8 : ffff0008bc2f0a10
[13206.902683] x8 : ffff0008bc2f34d0
[13206.902683] x7 : 0000000000000000
[13206.902683] x4 : ffff8000093ebc51
[13206.902685] x7 : 00000000000000c0
[13206.902685]
[13206.902685] x7 : 0000000000000000
[13206.902686] x7 : 00000000000000c0
[13206.902687] x6 : 000004525edb76ee
[13206.902687] x5 : ffff80000853f0c0
[13206.902687] x3 : ffff8000093ebca0
[13206.902688] x6 : 000004525edb76ee
[13206.902689] x6 : 000004525edb76ee
[13206.902689] x6 : 000004525edb76ee
[13206.902690]
[13206.902691]
[13206.902690] x4 : ffff80000961bc51
[13206.902692]
[13206.902692]
[13206.902692] x5 : ffff80000853f0c0
[13206.902693] x2 : ffff8000093ec000
[13206.902692]
[13206.902693] x3 : ffff80000961bca0
[13206.902693] x5 : ffff80000853f0c0
[13206.902694] x5 : ffff80000853f0c0
[13206.902695] x4 : ffff8000093dbc51
[13206.902696] x5 : ffff80000853f0c0
[13206.902696] x1 : ffff80000853f0c0
[13206.902696]
[13206.902697] x4 : ffff800009613c51
[13206.902697] x4 : ffff80000960bc51
[13206.902698] x0 : ffff8000093ebca0
[13206.902698] x3 : ffff8000093dbca0
[13206.902699] x2 : ffff80000961c000
[13206.902699] x4 : ffff8000093e3c51 x3 : ffff80000960bca0
[13206.902700] x3 : ffff800009613ca0
[13206.902702]
[13206.902702] x3 : ffff8000093e3ca0
[13206.902702]
[13206.902703] x1 : ffff80000853f0c0
[13206.902704]
[13206.902704]
[13206.902706] x2 : ffff800009614000
[13206.902706] x2 : ffff80000960c000
[13206.902706]
[13206.902707] x2 : ffff8000093dc000
[13206.902707] x0 : ffff80000961bca0
[13206.902708] x1 : ffff80000853f0c0
[13206.902709] x1 : ffff80000853f0c0
[13206.902710]
[13206.902709] x2 : ffff8000093e4000
[13206.902710] x1 : ffff80000853f0c0
[13206.902711] x0 : ffff800009613ca0
[13206.902712] x0 : ffff80000960bca0
[13206.902713]
[13206.902712] x1 : ffff80000853f0c0
[13206.902712] x0 : ffff8000093dbca0
[13206.902714]
[13206.902715]
[13206.902715] x0 : ffff8000093e3ca0
[13207.966039] SMP: failed to stop secondary CPUs 0-7
[13207.966052] Kernel Offset: disabled
[13207.966053] CPU features: 0x40000,20028084,0000420b
[13207.966056] Memory Limit: none
[13209.538412] ---[ end Kernel panic - not syncing: kernel stack overflow ]---

Hi Takuma

OK ! Thank for you support. 

Have a nice day! 

Thanks,

Dongho

Hi Dongho,

I hope you have a nice day as well! 

Best of luck with the debug!

Regards,

Takuma