nrfutil pkg generate bootloader freeze the computer

Question

nrfutil version 1.5.5 
 On Linux Mint (Ubuntu like) 
 in folder nRF5_SDK_12.1.0_0d23e2a/examples/dfu/bootloader_secure/pca10040/armgcc 
 make

nrfutil pkg generate --bootloader _build/nrf52832_xxaa_s132.bin --hw-version 52 --bootloader-version 0x00000001 --sd-req 0x8C --key-file /xxx/private.pem test.zip
 
 I use htop to monitor my CPU/mem activity. When I run nrfutil, 1 CPU goes 100% and my memory get swallowed in 10 seconds (all my memory is used) making my PC freezes. 
 Using nrfutil to generate application packages works fine and no memory consumption registered.

Vidar Berg · Accepted Answer

Have you checked the size of the .bin file? It will be 200MB+ when the UICR section starting at 0x10001000 is included due to byte padding. I guess this could explain the issue. 
 Nrfutil strips away this section before converting to .bin if you pass the .hex file instead, have you tried that? 
 Note that the UICR section cannot be a part of a DFU image.

nrfutil pkg generate bootloader freeze the computer

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