While running the bluetooth sample "beacon" for the target qemu_x86,

I get the following error

Starting Beacon Demo

Bluetooth initialized
Beacon started
[bt] [ERR] read_payload: Not enough space in buffer
[bt] [WRN] hci_cmd_done: pool id 1 pool 0x00405098 != &hci_cmd_pool 0x00405078

Is this a known issue? Could someone please tell me the possible cause
of this error and how to fix it possibly? Thanks.

On Sep 7, 2017, at 4:37 AM, Priyanka Rawat <priyanka.rawat@nxp.com> wrote:

Hi

I tried to compile my sample application code for the target
BOARD ?= qemu_cortex_m3

It compiles for qemu_x86 however for qemu_cortex_m3 it gives me errors related to SRAM overflowed.

$zephyr-sdk/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-zephyr-eabi/gcc/arm-zephyr-eabi/6.2.0/real-ld: zephyr_prebuilt.elf section `noinit' will not fit in region `SRAM'
$zephyr-sdk/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-zephyr-eabi/gcc/arm-zephyr-eabi/6.2.0/real-ld: section .intList VMA [0000000020010000,0000000020010043] overlaps section noinit VMA [000000002000d5a0,000000002002413b]
$zephyr-sdk/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-zephyr-eabi/gcc/arm-zephyr-eabi/6.2.0/real-ld: region `SRAM' overflowed by 82236 bytes
collect2: error: ld returned 1 exit status
$zephyr/Makefile:878: recipe for target 'zephyr_prebuilt.elf' failed


I test with the recent zephyr version (master branch).
In dts/arm/ti/lm3s6965.dtsi the SRAM for qemu_cortex_m3 defined is 64 KB.

I can manage to compile for qemu_cortex_m3 by increasing the value of SRAM from 64 KB to 128 KB in
dts/arm/ti/lm3s6965.dtsi

sram0: memory@20000000 {
device_type = "memory";
compatible = "mmio-sram";
reg = <0x20000000 (64*1024)>;
};

However, I want to test with the same SRAM value as in real hardware (e.g., eventually I want to test with KW41Z board). So instead of increasing the current SRAM value, I would rather modify proj.conf.

Could someone please tell me what would be the right approach to address this issue of SRAM overflow for qemu ARM ?

Thanks
Priyanka

However, I want to test with the same SRAM value as in real hardware (e.g.,

eventually I want to test with KW41Z board). So instead of increasing the current
SRAM value, I would rather modify proj.conf.

Could someone please tell me what would be the right approach to address

this issue of SRAM overflow for qemu ARM ?

Hi

I have two threads on my system communicating using TCP over loopback
interface. I am getting following errors.

[net/tcp] [ERR] net_tcp_get_hdr: {assert: 'frag' failed}
[net/tcp] [ERR] net_tcp_send_pkt: Packet 0x20004664 does not contain
TCP header [net/tcp] [ERR] net_tcp_get_hdr: {assert: 'frag' failed}
[net/tcp] [ERR] net_tcp_send_pkt: Packet 0x20004664 does not contain
TCP header [net/tcp] [ERR] net_tcp_get_hdr: {assert: 'frag' failed}
[net/tcp] [ERR] net_tcp_send_pkt: Packet 0x20004664 does not contain
TCP header [net/buf] [ERR] net_buf_unref_debug:
net_pkt_frag_unref():826: buf 0x200046a0 double free [net/buf] [ERR]
net_buf_unref_debug: net_pkt_frag_unref():826: buf 0x200046a0 double
free [net/buf] [ERR] net_buf_unref_debug: net_pkt_frag_unref():826:
buf 0x20004830 double free

Can someone help?

Regards, Vakul

I just open a TCP server socket and let it listen for new connections
on 127.0.0.1 on a given server port.

Then another thread creates a TCP client socket and connects to the
127.0.0.1 on the same server port. After connection is successful,
client sends one data message on the socket.

-----Original Message-----
From: Paul Sokolovsky [mailto:paul.sokolovsky@linaro.org]
Sent: Saturday, September 09, 2017 2:57 PM
To: Vakul Garg <vakul.garg@nxp.com>
Cc: zephyr-users@lists.zephyrproject.org
Subject: Re: [Zephyr-users] TCP assert error logs

Hello Vakul,

On Sat, 9 Sep 2017 06:47:35 +0000
Vakul Garg <vakul.garg@nxp.com> wrote:

Hi

I have two threads on my system communicating using TCP over
loopback interface. I am getting following errors.

To the best of my knowledge, there is (was) no loopback interface
support in Zephyr. So, I'd interested to know how to achieved the
setup above.

[net/tcp] [ERR] net_tcp_get_hdr: {assert: 'frag' failed} [net/tcp]
[ERR] net_tcp_send_pkt: Packet 0x20004664 does not contain TCP
header [net/tcp] [ERR] net_tcp_get_hdr: {assert: 'frag' failed}
[net/tcp] [ERR] net_tcp_send_pkt: Packet 0x20004664 does not
contain TCP header [net/tcp] [ERR] net_tcp_get_hdr: {assert: 'frag'
failed} [net/tcp] [ERR] net_tcp_send_pkt: Packet 0x20004664 does
not contain TCP header [net/buf] [ERR] net_buf_unref_debug:
net_pkt_frag_unref():826: buf 0x200046a0 double free [net/buf] [ERR]
net_buf_unref_debug: net_pkt_frag_unref():826: buf 0x200046a0
double free [net/buf] [ERR] net_buf_unref_debug:
net_pkt_frag_unref():826: buf 0x20004830 double free

Can someone help?

Regards, Vakul

--
Best Regards,
Paul

Linaro.org | Open source software for ARM SoCs Follow Linaro:
http://www.facebook.com/pages/Linaro http://twitter.com/#!/linaroorg
- http://www.linaro.org/linaro-blog

Hello Paul

I have attached a test case with the given ticket.

Regards

Vakul


-----Original Message-----
From: Paul Sokolovsky [mailto:paul.sokolovsky@linaro.org]
Sent: Monday, September 11, 2017 4:52 PM
To: Vakul Garg <vakul.garg@nxp.com>
Cc: zephyr-users@lists.zephyrproject.org
Subject: Re: [Zephyr-users] TCP assert error logs

Hello Vakul,

On Sat, 9 Sep 2017 09:31:14 +0000
Vakul Garg <vakul.garg@nxp.com> wrote:

I just open a TCP server socket and let it listen for new
connections on 127.0.0.1 on a given server port.

Right, that might work, thanks to
https://gerrit.zephyrproject.org/r/#/c/7007/ , and if you verified,
it apparently does (I don't remember if I ever using 127.0.0.1
address, I usually tried to use a local interface address in such
cases, i.e. 192.0.2.1 by default). But just to get terminology right,
there's no explicit loopback interface in Zephyr, it's just an adhoc
check for the conventional loopback address (though this note is
probably irrelevant for your usecase, so feel free to ignore it [for
now]).

Then another thread creates a TCP client socket and connects to the
127.0.0.1 on the same server port. After connection is successful,
client sends one data message on the socket.

What can I say? With such scenario, you went farther than I. Last
time I tried, it wasn't possible to establish a TCP connection under
such conditions at all:
https://jira.zephyrproject.org/browse/ZEP-2001 .

I'd suggest to add some comments to the above ticket, describing your
usecase. And ultimately, we'd need a typical small testcase to
reproduce the issue, so feel free to post your code to make a step
towards progress in that direction. I faced that issue when testing
networking support in Zephyr.JS and MicroPython projects, so there're
no readily available minimal testcases.



Thanks,
Paul

-----Original Message-----
From: Paul Sokolovsky [mailto:paul.sokolovsky@linaro.org]
Sent: Saturday, September 09, 2017 2:57 PM
To: Vakul Garg <vakul.garg@nxp.com>
Cc: zephyr-users@lists.zephyrproject.org
Subject: Re: [Zephyr-users] TCP assert error logs

Hello Vakul,

On Sat, 9 Sep 2017 06:47:35 +0000
Vakul Garg <vakul.garg@nxp.com> wrote:

Hi

I have two threads on my system communicating using TCP over
loopback interface. I am getting following errors.

To the best of my knowledge, there is (was) no loopback interface
support in Zephyr. So, I'd interested to know how to achieved the
setup above.

[net/tcp] [ERR] net_tcp_get_hdr: {assert: 'frag' failed}
[net/tcp] [ERR] net_tcp_send_pkt: Packet 0x20004664 does not
contain TCP header [net/tcp] [ERR] net_tcp_get_hdr: {assert:
'frag' failed} [net/tcp] [ERR] net_tcp_send_pkt: Packet
0x20004664 does not contain TCP header [net/tcp] [ERR]
net_tcp_get_hdr: {assert: 'frag' failed} [net/tcp] [ERR]
net_tcp_send_pkt: Packet 0x20004664 does not contain TCP header
[net/buf] [ERR] net_buf_unref_debug: net_pkt_frag_unref():826:
buf 0x200046a0 double free [net/buf] [ERR] net_buf_unref_debug:
net_pkt_frag_unref():826: buf 0x200046a0 double free [net/buf]
[ERR] net_buf_unref_debug: net_pkt_frag_unref():826: buf
0x20004830 double free

Can someone help?

Regards, Vakul

--
Best Regards,
Paul

Linaro.org | Open source software for ARM SoCs Follow Linaro:
http://www.facebook.com/pages/Linaro http://twitter.com/#!/linaroorg
- http://www.linaro.org/linaro-blog

--
Best Regards,
Paul

Linaro.org | Open source software for ARM SoCs Follow Linaro:
http://www.facebook.com/pages/Linaro http://twitter.com/#!/linaroorg
- http://www.linaro.org/linaro-blog

UDP loopback works and I can make progress with it for now.

(Ultimately, I need to move to some non-networking IPC such as
mailbox or pipe. The problem I face with that now is that I cannot
multiplex these zephyr IPC in POSIX poll() along with socket
descriptors.)

Thanks & Regards

Vakul