Rebooting Core 0 panic'ed (LoadProhibited). Exception was unhandled.

[rha]

Sometimes, board restarting with this error.

Guru Meditation Error: Core  0 panic'ed (LoadProhibited). Exception was unhandled.
Core 0 register dump:
PC      : 0x4008b1e0  PS      : 0x00060033  A0      : 0x800899b2  A1      : 0x3ffbf840 
A2      : 0x00000000  A3      : 0x3ffc6b64  A4      : 0x9ffc6b64  A5      : 0x00000001 
A6      : 0x00060820  A7      : 0x00000000  A8      : 0x8008b0a9  A9      : 0x3ffbf810 
A10    : 0x20000001  A11    : 0x3ffbc308  A12    : 0x00000001  A13    : 0x00000001 
A14    : 0x00060021  A15    : 0x00000000  SAR    : 0x00000016  EXCCAUSE: 0x0000001c 
EXCVADDR: 0x9ffc6b64  LBEG    : 0x00000000  LEND    : 0x00000000  LCOUNT  : 0x00000000 
Core 0 was running in ISR context:
EPC1    : 0x4008b1e0  EPC2    : 0x00000000  EPC3    : 0x00000000  EPC4    : 0x00000000



ELF file SHA256: 0000000000000000

Backtrace: 0x4008b1e0:0x3ffbf840 0x400899af:0x3ffbf860 0x4008c049:0x3ffbf880 0x40086f9a:0x3ffbf890 0x401448c7:0x3ffbc210 0x40131667:0x3ffbc230 0x4008b071:0x3ffbc250 0x400898c2:0x683ffbc2

Rebooting...

How solve it ? Is it hardware problem ?

THX