zephyr_pre0.elf section `bss' will not fit in region `RAM' | region `RAM' overflowed by 135500 bytes

[fuddymox]

Hello,

When building my project although the terminal doesn't show me using all the RAM, I get the following error message which fails the build. 

Memory region         Used Size  Region Size  %age Used
           FLASH:       48456 B        64 KB     73.94%
             RAM:       18884 B        32 KB     57.63%

c:/ncs/toolchains/c57af46cb7/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd.exe: zephyr\zephyr_pre0.elf section `bss' will not fit in region `RAM'
c:/ncs/toolchains/c57af46cb7/opt/zephyr-sdk/arm-zephyr-eabi/bin/../lib/gcc/arm-zephyr-eabi/12.2.0/../../../../arm-zephyr-eabi/bin/ld.bfd.exe: region `RAM' overflowed by 135500 bytes

I am using a custom device with a nRF5340 chipset, custom board files and all. Is this build error actually related to the RAM usage or is there something else I'm missing?

Thanks,

[Sigurd Hellesvik]

Hi,

The build system builds multiple images.

doesn't show me using all the RAM,

I'm guessing this is the network core

I get the following error message which fails the build. 

And this one is the application.

I suggest that you start by looking at Memory optimization and try to reduce some buffers to see if the error reports a smaller overflow.

Regards,
Sigurd Hellesvik

[fuddymox]

Thank you I was able to identify a buffer that was much larger than it needed to be and now it builds.