We are experiencing crashes with Chromium on the i.MX 8M Plus (i.MX8MP) with 2GB of RAM running Yoct

[charleshuang]

We are experiencing crashes with Chromium on the i.MX 8M Plus (i.MX8MP) with 2GB of RAM running Yocto 5.0.

result:

2G RAM FAIL

6G RAM Pass.

Do you have any idea for fixed the issue?

Test tool install:

FF_Browser_issue.7z

1. sudo dpkg -i libcxx_18.1.4-r0_arm64.deb
2. sudo dpkg -i libxslt_1.1.39-r0_arm64.deb
3. sudo dpkg -i nspr_4.35-r0_arm64.deb
4. sudo dpkg -i nss_3.98-r0_arm64.deb
5. sudo dpkg -i upower_0.99.17-r0_arm64.deb
6. sudo dpkg -i chromium-ozone-wayland_117.0.5938.132-r0_arm64.deb

7. Test command:

   1. chromium –no-sandbox
   

[pengyong_zhang · Accepted solution]

Hi @charleshuang 

i agree with this recommendation.

B.R

[pengyong_zhang]

Hi @charleshuang 

Yes, please refer the following link file change your dts file.

https://github.com/nxp-imx/linux-imx/blob/7ad9f6482c318b86906c53f4db5e7d4b17398abd/arch/arm64/boot/d...

B.R

[charleshuang]

Hi @pengyong_zhang 

Regarding the conclusion from the December 10 meeting with NXP (Wes Li) and WPI (Jimmy Chen and Andy Chien), both NXP and WPI agreed that upgrading the RAM to 4GB is required in order to resolve this issue.

Reference :　　NXP Bio_TICFSL feedback:

If it the BSP what you are tying to build, the galcore need at least 4GB or modify the source code. The MX8Mplus can boot from 2GB but to run complete the BSP you need 4GB

https://community.nxp.com/t5/i-MX-Processors/imx8mp-How-to-slove-Galcore-crash/m-p/1526490#M195489

We would like to confirm whether you agree with this recommendation.

[pengyong_zhang]

Hi @charleshuang 

Please share me your dts file. i will help you check it.

B.R

[charleshuang]

Hi NXP @pengyong_zhang 

My dts (imx8mp-rsb3720-a1.dts) github link 

https://github.com/ADVANTECH-Corp/linux-imx/blob/adv_5.4.70_2.3.0/arch/arm64/boot/dts/freescale/imx8...

Do you mean we need to add "gpu_reserved" in my dts?

[pengyong_zhang]

Hi @charleshuang 

Please also change the gpu_reserved node as following. If it still can not work, then the smallest DDR size is 4GB, you can not use just 2GB DRAM size.

gpu_reserved: gpu_reserved@80000000 {

      no-map;

      reg = <0 0x80000000 0 0x8000000>;

};

B.R 

[pengyong_zhang]

Hi @charleshuang 

Try to use below command, 

echo 134217728 > /sys/module/galcore/parameters/contiguousSize

Because i have no 2GB DDR on my site, so i can not reproduce your request. you need to try it on your board.

B.R

[charleshuang]

Hi @pengyong_zhang 

Still fail. (system crash)

 

[pengyong_zhang]

Hi @charleshuang 

So the question is: Can we still use the 2GB RAM configuration?

>>>the answer is yes! you can use the 2GB RAM. But you need to change the CMA and galcore.contiguousSize to fit the 2Gb RAM. For example. you can change the CMA size equal 512MB and galcore.contiguousSize equal 128MB. But i do not suggest you change it, because this would obviously reduce performance. So the best choose is use your 6GB RAM. May i know why are you use 2GB, not 6GB?

B.R

[charleshuang]

Hi NXP @pengyong_zhang 

If I will be to change the CMA size equal 512MB , galcore.contiguousSize setting 128Mb.

How to do it?

For example : Modify Kernek dts

reserved-memory {
#address-cells = <2>;
#size-cells = <2>;
ranges;

linux,cma {
compatible = "shared-dma-pool";
reusable;
size = <0x0 0x20000000>; /* 512MB */
alignment = <0x0 0x400000>; /* 4MB alignment */
linux,cma-default;
};
};

[pengyong_zhang]

Hi @charleshuang 

Can you pass the DDR stress test with DDR Config Tool ? About your 2GB DDR.

B.R

[charleshuang]

Hi @pengyong_zhang 

The pass.

[charleshuang]

Hi NXP @pengyong_zhang  

https://community.nxp.com/t5/i-MX-Processors/imx8mp-How-to-slove-Galcore-crash/m-p/1526490#M195489

Regarding the community issue, NXP provided feedback about the Galcore crash:

NXP Bio_TICFSK feedback:
If this is the BSP you are trying to build, Galcore requires at least 4GB of RAM, or you need to modify the source code. The i.MX8M Plus can boot with 2GB, but to run the full BSP you need 4GB. Chromium also uses Galcore.

So the question is: Can we still use the 2GB RAM configuration?

[pengyong_zhang]

Hi @charleshuang 

What is you 2GB DRAM type? Can you pass the DDR stress test with our DDR Config Tool?

B.R

[charleshuang]

Hi @pengyong_zhang 

The attachment file "MX8M_Plus_LPDDR4_RPA_v10" is DDR tools excel.

We try test it again.

The result is fail (crashes with Chromium ).

Do you have any idea?

Thanks.

[charleshuang]

The attachment file "MX8M_Plus_LPDDR4_RPA_v10" is DDR tools excel.

[pengyong_zhang]

Hi @charleshuang 

Please try the below command:

chromium --disable-gpu --disable-software-rasterizer --disable-extensions --disable-background-networking --disable-sync --disable-translate --disable-features=SitePerProcess --no-sandbox
``

B.R

[Jems-advantech]

Thank you for providing the test command. I have executed the test as suggested, but unfortunately, the Chromium browser still hangs and eventually crashes. After the crash, the desktop becomes completely unusable; however, the debug console remains operational.

Here is the running information:

The memory size remains around 1.4 GB, but some error messages appear.

After the desktop crash, I executed dmesg in the debug console, and additional error messages were observed.

Attached is the full log for your reference.

Kindly let me know if there are any additional steps or alternative approaches you would recommend.