HardFault when sending data using TCP socket in a Thread

[flipflop22]

Description

My setup: -UBLOX_EVK_ODIN_W2 -GCC_ARM -mbed cli (newest version) -GNU ARM Eclipse -Issue: networking in thread

So I try to create a thread. send_thread(osPriorityRealtime)

I try start the thread.

I create a buffer with size of 5360 for(i=0;i<5360;i++){ out_buffer[i]=0xAA; }

when I try to send this buffer. size = client_sock.send(out_buffer,BUFFER_SIZE);

Then, Mbed Error message pops out and says HardFault as follow:

Context: R0 : AAAAAAAA R1 : 000000AA R2 : DC02A8C0 R3 : 00000000 R4 : 2000FCB8 R5 : 2001023C R6 : 00000860 R7 : 00000000 R8 : 00000001 R9 : 2000FCBC R10 : 00000000 R11 : 20000EC4 R12 : 0801DE0D SP : 2001CE40 LR : 0800943F PC : 0800593C xPSR : 610F0000 PSP : 2001CDD8 MSP : 2002FFD8 CPUID: 410FC241 HFSR : 40000000 MMFSR: 00000000 BFSR : 00000082 UFSR : 00000000 DFSR : 0000000A AFSR : 00000000 SHCSR: 00000000 BFAR : AAAAAAEB Mode : Thread Priv : Privileged Stack: PSP

Threads Info: Current: State: 0x00000002 Entry: 0x0801F2DD Stack Size: 0x00001000 Mem: 0x2001BF78 SP: 0x2001CE58 Next: State: 0x00000002 Entry: 0x0801F2DD Stack Size: 0x00001000 Mem: 0x2001BF78 SP: 0x2001CE58 Wait: State: 0x00000083 Entry: 0x0801F211 Stack Size: 0x00000300 Mem: 0x20005770 SP: 0x20005A08 Delay: State: 0x00000083 Entry: 0x0801F2DD Stack Size: 0x00001000 Mem: 0x20016BD0 SP: 0x20017A98 Idle: State: 0x00000001 Entry: 0x0801C2F1 Stack Size: 0x00000200 Mem: 0x20005A70 SP: 0x20005C18

-- MbedOS Fault Handler --

++ MbedOS Error Info ++ Error Status: 0x80ff013d Code: 317 Module: 255 Error Message: System encountered an unrecoverable fault exception, halting system. Location: 0x800593c

-- MbedOS Error Info --

Issue request type

[ ] Question
[ ] Enhancement
[X] Bug

[ciarmcom]

ARM Internal Ref: MBOTRIAGE-1064

[kjbracey]

Are you sure you've not just overrun the buffer when filling it? The system has tried to use 0xAAAAAAAA as an address. Is the buffer on the stack? It wouldn't fit.

[SeppoTakalo]

Needs example code to replicate.

[flipflop22]

problem solved. The problem is with the code. Apparently the input size is bigger than declared buffer.