Why does the hardfault "line_num=1436 , rem.c" occur?

[zqclzz]

Hello, dear Nordic employee,

MCU: 51822QFACA1 The using SDK is : SDK 7.2.0 The using SD is : s110_nrf51822_7.3.0_softdevice

There was one device (our product) runing into the hardfault state, and just only one device got the problem and other thousands of devices worked normally. I debugged the problem device and got the hardfault info" error_code=DEADBEEF, line_num=1436, p_file_name=src\rem.c". It seems the solfdevice issue, so I can not find the reason. I want to know what results in the hardfault and how to solve the problem?

Looking forward to your reply! Thanks.

[run_ar]

Are you using the timeslot api? or do you disable/enable interrupts? This happens because the Radio Event Manager gets an unexpected event. So most likely something is wrong with timing. Note that if you halt the softdevice you will get an hardfault.