Signal Handler Called at 0xFFFFFFF9

[jowakar122]

My code gets complied without any errors. But just before the uploading completes: 
<signal handler> called at 0xfffffff9 is displayed.

Even though after that my code runs properly without any hardfault.

[TDK]

0xFFFFFFF9 suggests an interrupt is called but the interrupt table is incorrect or erased. Probably the debugger is in an intermediate state.

If things are working, I wouldn't bother with it.