[Buildroot] OpenSSL & Mosquitto on ARM Cortex M7

[Buildroot] OpenSSL & Mosquitto on ARM Cortex M7

[rob.r374 at gmail.com]

Hello,

 

I'm trying to include Mosquitto with OpenSSL support on Buildroot. 

 

On working Buildroot basic build, I've added packages and setup static libs
:

BR2_PACKAGE_LIBOPENSSL=y

BR2_PACKAGE_MOSQUITTO=y 

BR2_PACKAGE_MBEDTLS=y

BR2_STATIC_LIBS=y

If I try to run Mosquitto tools (and MbedTLS test), I get :

~ # mosquitto_pub

binfmt_flat: reference 0xffb4d0 to shared library 127, killing
mosquitto_pub!

SEGV

~ # mosquitto_sub

Error: You must specify a topic to subscribe to.

Use 'mosquitto_sub --help' to see usage.

 

~ # ssl_client2

sh: can't execute 'ssl_client2': No such file or directory

 

It's weird, because mosquitto_pub complains about shared lib, but I have
defined static libraries only (at least I think so).

In addition, mosquitto_sub works, but it seems it doesn't receive SSL
related arguments - seems like it was not compiled with OpenSSL lib.

Also, ssl_client2 or other tools from MbedTLS cannot be found.

 

How to solve those problems ? 

 

Also I'm not sure how to check for each package - compilation, installation,
errors, warnings etc.

 

Regards,

Rob. 

 

 



-- 
Ta e-po?ta je bila pregledana z Avast protivirusnim programom.
https://www.avast.com/antivirus
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[Buildroot] OpenSSL & Mosquitto on ARM Cortex M7

[Peter Seiderer]

Hello Rob,

On Mon, 19 Oct 2020 02:20:00 +0200, <rob.r374@gmail.com> wrote:

> Hello,
>
>
>
> I'm trying to include Mosquitto with OpenSSL support on Buildroot.
>
>
>
> On working Buildroot basic build, I've added packages and setup static libs
> :
>
> BR2_PACKAGE_LIBOPENSSL=y
>
> BR2_PACKAGE_MOSQUITTO=y
>
> BR2_PACKAGE_MBEDTLS=y
>
> BR2_STATIC_LIBS=y
>
> If I try to run Mosquitto tools (and MbedTLS test), I get :
>
> ~ # mosquitto_pub
>
> binfmt_flat: reference 0xffb4d0 to shared library 127, killing
> mosquitto_pub!
>
> SEGV
>
> ~ # mosquitto_sub
>
> Error: You must specify a topic to subscribe to.
>
> Use 'mosquitto_sub --help' to see usage.
>
>
>
> ~ # ssl_client2
>
> sh: can't execute 'ssl_client2': No such file or directory
>
>
>
> It's weird, because mosquitto_pub complains about shared lib, but I have
> defined static libraries only (at least I think so).
>
> In addition, mosquitto_sub works, but it seems it doesn't receive SSL
> related arguments - seems like it was not compiled with OpenSSL lib.
>
> Also, ssl_client2 or other tools from MbedTLS cannot be found.
>
>
>
> How to solve those problems ?
>
>
>
> Also I'm not sure how to check for each package - compilation, installation,
> errors, warnings etc.

Did you do/try a full rebuild after changing your config ([1])?

If the problem still exists after a full rebuild please provide your
.config or defconfig file and the buildroot version your are using...

Regards,
Peter

[1] https://buildroot.org/downloads/manual/manual.html#full-rebuild

>
>
>
> Regards,
>
> Rob.
>
>
>
>
>
>
>

[Buildroot] OpenSSL & Mosquitto on ARM Cortex M7

[RR]

Hello,

I'm enclosing my defconfig... I'm basically compiling for ARM Cortex-M7
(stm32f769 discovery board).

What I have additionally spotted is that mosquiotto_sub doesn't crash with
same error, but it doesn't have ssl options working.
So probably my first problem is that libopenssl doesn't compile properly...

When I try to compile it separately, by using 
	make libopenssl-reconfigure

it seems that it doesn't have target architecture defined. If I add
BR2_PACKAGE_TARGET_ARCH="arm-v4" to make call,
I end up in error of missing file (it's also weird why win32 files are
included in compilation at all) :

/home/robi/Razvoj/Linux/Buildroot/JE_UcLinux/buildroot/../host/bin/arm-build
root-uclinux-uclibcgnueabi-gcc  -I. -Iinclude -fPIC -pthread
-Wa,--noexecstack -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
-D_FILE_OFFSET_BITS=64  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
-D_FILE_OFFSET_BITS=64  -Os    -Wl,-elf2flt -static -DHAVE_FORK=0
-DOPENSSL_NO_MADVISE -DOPENSSL_NO_ASYNC    -Wl,-elf2flt -static
-DOPENSSL_USE_NODELETE -DOPENSSL_PIC -DOPENSSL_CPUID_OBJ
-DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_GF2m -DSHA1_ASM -DSHA256_ASM
-DSHA512_ASM -DKECCAK1600_ASM -DAES_ASM -DBSAES_ASM -DGHASH_ASM
-DECP_NISTZ256_ASM -DPOLY1305_ASM -DOPENSSLDIR="\"/etc/ssl\""
-DENGINESDIR="\"/usr/lib/engines-1.1\"" -DZLIB -DNDEBUG -D_LARGEFILE_SOURCE
-D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -MMD -MF
crypto/dso/dso_win32.d.tmp -MT crypto/dso/dso_win32.o -c -o
crypto/dso/dso_win32.o crypto/dso/dso_win32.c
crypto/dso/dso_dlfcn.c:28:12: fatal error: dlfcn.h: No such file or
directory
 #  include <dlfcn.h>
            ^~~~~~~~~
compilation terminated.

Any advice where I can learn or get libopenssl compiled properly?
 Then I can proceed to mosquitto, because it uses libopenssl.
I'm probably doing something obviously wrong...
I'm using buildroot release tag 2020.05...

Thanks in advance,
Regards,

-----Original Message-----
From: Peter Seiderer <ps.report@gmx.net> 
Sent: Monday, October 19, 2020 9:11 PM
To: rob.r374 at gmail.com
Cc: buildroot at busybox.net
Subject: Re: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7

Hello Rob,

On Mon, 19 Oct 2020 02:20:00 +0200, <rob.r374@gmail.com> wrote:

> Hello,
>
>
>
> I'm trying to include Mosquitto with OpenSSL support on Buildroot.
>
>
>
> On working Buildroot basic build, I've added packages and setup static 
> libs
> :
>
> BR2_PACKAGE_LIBOPENSSL=y
>
> BR2_PACKAGE_MOSQUITTO=y
>
> BR2_PACKAGE_MBEDTLS=y
>
> BR2_STATIC_LIBS=y
>
> If I try to run Mosquitto tools (and MbedTLS test), I get :
>
> ~ # mosquitto_pub
>
> binfmt_flat: reference 0xffb4d0 to shared library 127, killing 
> mosquitto_pub!
>
> SEGV
>
> ~ # mosquitto_sub
>
> Error: You must specify a topic to subscribe to.
>
> Use 'mosquitto_sub --help' to see usage.
>
>
>
> ~ # ssl_client2
>
> sh: can't execute 'ssl_client2': No such file or directory
>
>
>
> It's weird, because mosquitto_pub complains about shared lib, but I 
> have defined static libraries only (at least I think so).
>
> In addition, mosquitto_sub works, but it seems it doesn't receive SSL 
> related arguments - seems like it was not compiled with OpenSSL lib.
>
> Also, ssl_client2 or other tools from MbedTLS cannot be found.
>
>
>
> How to solve those problems ?
>
>
>
> Also I'm not sure how to check for each package - compilation, 
> installation, errors, warnings etc.

Did you do/try a full rebuild after changing your config ([1])?

If the problem still exists after a full rebuild please provide your .config
or defconfig file and the buildroot version your are using...

Regards,
Peter

[1] https://buildroot.org/downloads/manual/manual.html#full-rebuild

>
>
>
> Regards,
>
> Rob.
>
>
>
>
>
>
>

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[Buildroot] OpenSSL & Mosquitto on ARM Cortex M7

[Peter Seiderer]

Hello Rob,

On Sun, 25 Oct 2020 11:33:05 +0100, "RR" <rob.r374@gmail.com> wrote:

> Hello,
>
> I'm enclosing my defconfig... I'm basically compiling for ARM Cortex-M7
> (stm32f769 discovery board).
>
> What I have additionally spotted is that mosquiotto_sub doesn't crash with
> same error, but it doesn't have ssl options working.
> So probably my first problem is that libopenssl doesn't compile properly...
>
> When I try to compile it separately, by using
> 	make libopenssl-reconfigure
>
> it seems that it doesn't have target architecture defined. If I add
> BR2_PACKAGE_TARGET_ARCH="arm-v4" to make call,
> I end up in error of missing file (it's also weird why win32 files are
> included in compilation at all) :
>
> /home/robi/Razvoj/Linux/Buildroot/JE_UcLinux/buildroot/../host/bin/arm-build
> root-uclinux-uclibcgnueabi-gcc  -I. -Iinclude -fPIC -pthread
> -Wa,--noexecstack -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
> -D_FILE_OFFSET_BITS=64  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
> -D_FILE_OFFSET_BITS=64  -Os    -Wl,-elf2flt -static -DHAVE_FORK=0
> -DOPENSSL_NO_MADVISE -DOPENSSL_NO_ASYNC    -Wl,-elf2flt -static
> -DOPENSSL_USE_NODELETE -DOPENSSL_PIC -DOPENSSL_CPUID_OBJ
> -DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_GF2m -DSHA1_ASM -DSHA256_ASM
> -DSHA512_ASM -DKECCAK1600_ASM -DAES_ASM -DBSAES_ASM -DGHASH_ASM
> -DECP_NISTZ256_ASM -DPOLY1305_ASM -DOPENSSLDIR="\"/etc/ssl\""
> -DENGINESDIR="\"/usr/lib/engines-1.1\"" -DZLIB -DNDEBUG -D_LARGEFILE_SOURCE
> -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -MMD -MF
> crypto/dso/dso_win32.d.tmp -MT crypto/dso/dso_win32.o -c -o
> crypto/dso/dso_win32.o crypto/dso/dso_win32.c
> crypto/dso/dso_dlfcn.c:28:12: fatal error: dlfcn.h: No such file or
> directory
>  #  include <dlfcn.h>
>             ^~~~~~~~~
> compilation terminated.
>
> Any advice where I can learn or get libopenssl compiled properly?

Use buildroot and take a look at the log and/or compile output...


>  Then I can proceed to mosquitto, because it uses libopenssl.

The following defconfig compiles fine (no runtime test because
of lack of hardware):

BR2_arm=y
BR2_cortex_m7=y
BR2_TOOLCHAIN_BUILDROOT_CXX=y
BR2_PACKAGE_HOST_ELF2FLT=y
BR2_SYSTEM_DHCP="eth0"
BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
BR2_PACKAGE_SDL=y
BR2_PACKAGE_SDL_TTF=y
BR2_PACKAGE_MBEDTLS=y
BR2_PACKAGE_OPENSSL=y
BR2_PACKAGE_LIBOPENSSL_BIN=y
BR2_PACKAGE_LIBPTHREAD_STUBS=y
BR2_PACKAGE_DROPBEAR=y
BR2_PACKAGE_MOSQUITTO=y
BR2_PACKAGE_NET_TOOLS=y
BR2_TARGET_ROOTFS_EXT2=y
# BR2_TARGET_ROOTFS_TAR is not set
BR2_PACKAGE_HOST_OPENOCD=y


The mosquitto package compile gets the right make options, e.g.:

/usr/bin/make -j17 -C .../build/mosquitto-1.6.12 [...] WITH_WRAP=no WITH_DOCS=no WITH_STATIC_LIBRARIES=yes WITH_SHARED_LIBRARIES=no WITH_ADNS=no WITH_THREADING=no WITH_TLS=yes CLIENT_STATIC_LDADD="`/home/seiderer/Work/Buildroot/build_openssl_mosquitto_001/host/bin/pkg-config --libs openssl`" WITH_SRV=no WITH_WEBSOCKETS=no


> I'm probably doing something obviously wrong...
> I'm using buildroot release tag 2020.05...
>
> Thanks in advance,
> Regards,
>
> -----Original Message-----
> From: Peter Seiderer <ps.report@gmx.net>
> Sent: Monday, October 19, 2020 9:11 PM
> To: rob.r374 at gmail.com
> Cc: buildroot at busybox.net
> Subject: Re: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7
>
> Hello Rob,
>
> On Mon, 19 Oct 2020 02:20:00 +0200, <rob.r374@gmail.com> wrote:
>
> > Hello,
> >
> >
> >
> > I'm trying to include Mosquitto with OpenSSL support on Buildroot.
> >
> >
> >
> > On working Buildroot basic build, I've added packages and setup static
> > libs
> > :
> >
> > BR2_PACKAGE_LIBOPENSSL=y
> >
> > BR2_PACKAGE_MOSQUITTO=y
> >
> > BR2_PACKAGE_MBEDTLS=y
> >
> > BR2_STATIC_LIBS=y
> >
> > If I try to run Mosquitto tools (and MbedTLS test), I get :
> >
> > ~ # mosquitto_pub
> >
> > binfmt_flat: reference 0xffb4d0 to shared library 127, killing
> > mosquitto_pub!
> >
> > SEGV
> >
> > ~ # mosquitto_sub
> >
> > Error: You must specify a topic to subscribe to.
> >
> > Use 'mosquitto_sub --help' to see usage.
> >
> >
> >
> > ~ # ssl_client2
> >
> > sh: can't execute 'ssl_client2': No such file or directory

ssh_client2 is from mbedtls, but BR2_PACKAGE_MBEDTLS_PROGRAMS depends on BR2_USE_MMU
which is not set for your configuration...

> >
> >
> >
> > It's weird, because mosquitto_pub complains about shared lib, but I
> > have defined static libraries only (at least I think so).
> >
> > In addition, mosquitto_sub works, but it seems it doesn't receive SSL
> > related arguments - seems like it was not compiled with OpenSSL lib.

What do your mean with 'doesn't receive SSL related arguments'?

Did your try a full re-build?

Regards,
Peter


> >
> > Also, ssl_client2 or other tools from MbedTLS cannot be found.
> >
> >
> >
> > How to solve those problems ?
> >
> >
> >
> > Also I'm not sure how to check for each package - compilation,
> > installation, errors, warnings etc.
>
> Did you do/try a full rebuild after changing your config ([1])?
>
> If the problem still exists after a full rebuild please provide your .config
> or defconfig file and the buildroot version your are using...
>
> Regards,
> Peter
>
> [1] https://buildroot.org/downloads/manual/manual.html#full-rebuild
>
> >
> >
> >
> > Regards,
> >
> > Rob.
> >
> >
> >
> >
> >
> >
> >
>

[Buildroot] OpenSSL & Mosquitto on ARM Cortex M7

[RR]

Hello Peter,

thank you a lot. It seems that compilation now goes ok.
It seems that I'm closer to the solution.

In runtime, I get error on memory allocation. Probably I need to increase
related stack-size, but don't know how to.
Is now problem only related to add more stack size ? If yes, how can I do
this ?
If not, please give me advice what to do next...

The only way I found was  _FLAT_STACKSIZE but I haven't found any examples
on how to use it.
Adding MOSQUITTO_FLAT_STACKSIZE=1048576 didn't help. I was  probably doing
it wrong way...
Also, mosquitto produces more binaries as  output...

Thanks in advance,
Regards,
Rob.

Command line:
~ # free
                        total        used        free      shared
buff/cache   available
Mem:          11864        6728        3908           0        1228
3460

~ # mosquitto_pub -d --debug -h xxxxxxxxxxxxx  -t yyyyyyyyyyyyy -m Test -i
mo
sq_pub111 --cafile /etc/res/ca.crt -p 8883  --cert /etc/res/client.crt --key
/et
c/res/client.key --insecure --repeat 10000 --repeat-delay 10
mosquitto_pub: page allocation failure: order:8, mode:0xcc0(GFP_KERNEL),
nodemask=(null)
nommu: Allocation of length 860160 from process 67 (mosquitto_pub) failed
binfmt_flat: Unable to mmap process text, errno -12
SEGV


DMESG:
Mem-Info:
active_anon:0 inactive_anon:0 isolated_anon:0
active_file:0 inactive_file:20 isolated_file:0
unevictable:202 dirty:0 writeback:0 unstable:0
slab_reclaimable:0 slab_unreclaimable:809
mapped:0 shmem:0 pagetables:0 bounce:0
free:1140 free_pcp:0 free_cma:0
Node 0 active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB
unevictable:808kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB
writeback:0kB shmem:0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
Normal free:4560kB min:432kB low:540kB high:648kB reserved_highatomic:0KB
active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB
unevictable:808kB writepending:0kB present:15296kB managed:11864kB
mlocked:0kB kernel_stack:280kB pagetables:0kB bounce:0kB free_pcp:0kB
local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0
Normal: 30*4kB (UM) 29*8kB (UM) 11*16kB (UM) 8*32kB (UM) 11*64kB (UM)
4*128kB (M) 4*256kB (UM) 3*512kB (M) 0*1024kB 0*2048kB 0*4096kB = 4560kB
222 total pagecache pages
3824 pages RAM
0 pages HighMem/MovableOnly
858 pages reserved
nommu: Allocation of length 860160 from process 67 (mosquitto_pub) failed
active_anon:0 inactive_anon:0 isolated_anon:0
active_file:0 inactive_file:20 isolated_file:0
unevictable:202 dirty:0 writeback:0 unstable:0
slab_reclaimable:0 slab_unreclaimable:809
mapped:0 shmem:0 pagetables:0 bounce:0
free:1140 free_pcp:0 free_cma:0
Node 0 active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB
unevictable:808kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB
writeback:0kB shmem:0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
Normal free:4560kB min:432kB low:540kB high:648kB reserved_highatomic:0KB
active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB
unevictable:808kB writepending:0kB present:15296kB managed:11864kB
mlocked:0kB kernel_stack:280kB pagetables:0kB bounce:0kB free_pcp:0kB
local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0
Normal: 30*4kB (UM) 29*8kB (UM) 11*16kB (UM) 8*32kB (UM) 11*64kB (UM)
4*128kB (M) 4*256kB (UM) 3*512kB (M) 0*1024kB 0*2048kB 0*4096kB = 4560kB
222 total pagecache pages
binfmt_flat: Unable to mmap process text, errno -12

----------------------------------------------------------------------------
----------------------------------------------------------------------------
----------------------------------------------------------------------------
---
-----Original Message-----
From: Peter Seiderer <ps.report@gmx.net> 
Sent: Sunday, October 25, 2020 10:22 PM
To: RR <rob.r374@gmail.com>
Cc: buildroot at busybox.net
Subject: Re: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7

Hello Rob,

On Sun, 25 Oct 2020 11:33:05 +0100, "RR" <rob.r374@gmail.com> wrote:

> Hello,
>
> I'm enclosing my defconfig... I'm basically compiling for ARM 
> Cortex-M7
> (stm32f769 discovery board).
>
> What I have additionally spotted is that mosquiotto_sub doesn't crash 
> with same error, but it doesn't have ssl options working.
> So probably my first problem is that libopenssl doesn't compile
properly...
>
> When I try to compile it separately, by using
> 	make libopenssl-reconfigure
>
> it seems that it doesn't have target architecture defined. If I add 
> BR2_PACKAGE_TARGET_ARCH="arm-v4" to make call, I end up in error of 
> missing file (it's also weird why win32 files are included in 
> compilation at all) :
>
> /home/robi/Razvoj/Linux/Buildroot/JE_UcLinux/buildroot/../host/bin/arm
> -build root-uclinux-uclibcgnueabi-gcc  -I. -Iinclude -fPIC -pthread 
> -Wa,--noexecstack -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
> -D_FILE_OFFSET_BITS=64  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
> -D_FILE_OFFSET_BITS=64  -Os    -Wl,-elf2flt -static -DHAVE_FORK=0
> -DOPENSSL_NO_MADVISE -DOPENSSL_NO_ASYNC    -Wl,-elf2flt -static
> -DOPENSSL_USE_NODELETE -DOPENSSL_PIC -DOPENSSL_CPUID_OBJ 
> -DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_GF2m -DSHA1_ASM -DSHA256_ASM 
> -DSHA512_ASM -DKECCAK1600_ASM -DAES_ASM -DBSAES_ASM -DGHASH_ASM 
> -DECP_NISTZ256_ASM -DPOLY1305_ASM -DOPENSSLDIR="\"/etc/ssl\""
> -DENGINESDIR="\"/usr/lib/engines-1.1\"" -DZLIB -DNDEBUG 
> -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -MMD 
> -MF crypto/dso/dso_win32.d.tmp -MT crypto/dso/dso_win32.o -c -o 
> crypto/dso/dso_win32.o crypto/dso/dso_win32.c
> crypto/dso/dso_dlfcn.c:28:12: fatal error: dlfcn.h: No such file or 
> directory  #  include <dlfcn.h>
>             ^~~~~~~~~
> compilation terminated.
>
> Any advice where I can learn or get libopenssl compiled properly?

Use buildroot and take a look at the log and/or compile output...


>  Then I can proceed to mosquitto, because it uses libopenssl.

The following defconfig compiles fine (no runtime test because of lack of
hardware):

BR2_arm=y
BR2_cortex_m7=y
BR2_TOOLCHAIN_BUILDROOT_CXX=y
BR2_PACKAGE_HOST_ELF2FLT=y
BR2_SYSTEM_DHCP="eth0"
BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
BR2_PACKAGE_SDL=y
BR2_PACKAGE_SDL_TTF=y
BR2_PACKAGE_MBEDTLS=y
BR2_PACKAGE_OPENSSL=y
BR2_PACKAGE_LIBOPENSSL_BIN=y
BR2_PACKAGE_LIBPTHREAD_STUBS=y
BR2_PACKAGE_DROPBEAR=y
BR2_PACKAGE_MOSQUITTO=y
BR2_PACKAGE_NET_TOOLS=y
BR2_TARGET_ROOTFS_EXT2=y
# BR2_TARGET_ROOTFS_TAR is not set
BR2_PACKAGE_HOST_OPENOCD=y


The mosquitto package compile gets the right make options, e.g.:

/usr/bin/make -j17 -C .../build/mosquitto-1.6.12 [...] WITH_WRAP=no
WITH_DOCS=no WITH_STATIC_LIBRARIES=yes WITH_SHARED_LIBRARIES=no WITH_ADNS=no
WITH_THREADING=no WITH_TLS=yes
CLIENT_STATIC_LDADD="`/home/seiderer/Work/Buildroot/build_openssl_mosquitto_
001/host/bin/pkg-config --libs openssl`" WITH_SRV=no WITH_WEBSOCKETS=no


> I'm probably doing something obviously wrong...
> I'm using buildroot release tag 2020.05...
>
> Thanks in advance,
> Regards,
>
> -----Original Message-----
> From: Peter Seiderer <ps.report@gmx.net>
> Sent: Monday, October 19, 2020 9:11 PM
> To: rob.r374 at gmail.com
> Cc: buildroot at busybox.net
> Subject: Re: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7
>
> Hello Rob,
>
> On Mon, 19 Oct 2020 02:20:00 +0200, <rob.r374@gmail.com> wrote:
>
> > Hello,
> >
> >
> >
> > I'm trying to include Mosquitto with OpenSSL support on Buildroot.
> >
> >
> >
> > On working Buildroot basic build, I've added packages and setup 
> > static libs
> > :
> >
> > BR2_PACKAGE_LIBOPENSSL=y
> >
> > BR2_PACKAGE_MOSQUITTO=y
> >
> > BR2_PACKAGE_MBEDTLS=y
> >
> > BR2_STATIC_LIBS=y
> >
> > If I try to run Mosquitto tools (and MbedTLS test), I get :
> >
> > ~ # mosquitto_pub
> >
> > binfmt_flat: reference 0xffb4d0 to shared library 127, killing 
> > mosquitto_pub!
> >
> > SEGV
> >
> > ~ # mosquitto_sub
> >
> > Error: You must specify a topic to subscribe to.
> >
> > Use 'mosquitto_sub --help' to see usage.
> >
> >
> >
> > ~ # ssl_client2
> >
> > sh: can't execute 'ssl_client2': No such file or directory

ssh_client2 is from mbedtls, but BR2_PACKAGE_MBEDTLS_PROGRAMS depends on
BR2_USE_MMU which is not set for your configuration...

> >
> >
> >
> > It's weird, because mosquitto_pub complains about shared lib, but I 
> > have defined static libraries only (at least I think so).
> >
> > In addition, mosquitto_sub works, but it seems it doesn't receive 
> > SSL related arguments - seems like it was not compiled with OpenSSL lib.

What do your mean with 'doesn't receive SSL related arguments'?

Did your try a full re-build?

Regards,
Peter


> >
> > Also, ssl_client2 or other tools from MbedTLS cannot be found.
> >
> >
> >
> > How to solve those problems ?
> >
> >
> >
> > Also I'm not sure how to check for each package - compilation, 
> > installation, errors, warnings etc.
>
> Did you do/try a full rebuild after changing your config ([1])?
>
> If the problem still exists after a full rebuild please provide your 
> .config or defconfig file and the buildroot version your are using...
>
> Regards,
> Peter
>
> [1] https://buildroot.org/downloads/manual/manual.html#full-rebuild
>
> >
> >
> >
> > Regards,
> >
> > Rob.
> >
> >
> >
> >
> >
> >
> >
>

[Buildroot] OpenSSL & Mosquitto on ARM Cortex M7

[Peter Seiderer]

Hello Rob,

On Tue, 27 Oct 2020 08:41:38 +0100, "RR" <rob.r374@gmail.com> wrote:

> Hello Peter,
>
> thank you a lot. It seems that compilation now goes ok.
> It seems that I'm closer to the solution.
>
> In runtime, I get error on memory allocation. Probably I need to increase
> related stack-size, but don't know how to.
> Is now problem only related to add more stack size ? If yes, how can I do
> this ?
> If not, please give me advice what to do next...

Sorry, did not own a sample of your hardware (and lacking any experience
on this type of 'small' embedded systems), so no more help from my side...

Regards,
Peter

>
> The only way I found was  _FLAT_STACKSIZE but I haven't found any examples
> on how to use it.
> Adding MOSQUITTO_FLAT_STACKSIZE=1048576 didn't help. I was  probably doing
> it wrong way...
> Also, mosquitto produces more binaries as  output...
>
> Thanks in advance,
> Regards,
> Rob.
>
> Command line:
> ~ # free
>                         total        used        free      shared
> buff/cache   available
> Mem:          11864        6728        3908           0        1228
> 3460
>
> ~ # mosquitto_pub -d --debug -h xxxxxxxxxxxxx  -t yyyyyyyyyyyyy -m Test -i
> mo
> sq_pub111 --cafile /etc/res/ca.crt -p 8883  --cert /etc/res/client.crt --key
> /et
> c/res/client.key --insecure --repeat 10000 --repeat-delay 10
> mosquitto_pub: page allocation failure: order:8, mode:0xcc0(GFP_KERNEL),
> nodemask=(null)
> nommu: Allocation of length 860160 from process 67 (mosquitto_pub) failed
> binfmt_flat: Unable to mmap process text, errno -12
> SEGV
>
>
> DMESG:
> Mem-Info:
> active_anon:0 inactive_anon:0 isolated_anon:0
> active_file:0 inactive_file:20 isolated_file:0
> unevictable:202 dirty:0 writeback:0 unstable:0
> slab_reclaimable:0 slab_unreclaimable:809
> mapped:0 shmem:0 pagetables:0 bounce:0
> free:1140 free_pcp:0 free_cma:0
> Node 0 active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB
> unevictable:808kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB
> writeback:0kB shmem:0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
> Normal free:4560kB min:432kB low:540kB high:648kB reserved_highatomic:0KB
> active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB
> unevictable:808kB writepending:0kB present:15296kB managed:11864kB
> mlocked:0kB kernel_stack:280kB pagetables:0kB bounce:0kB free_pcp:0kB
> local_pcp:0kB free_cma:0kB
> lowmem_reserve[]: 0 0
> Normal: 30*4kB (UM) 29*8kB (UM) 11*16kB (UM) 8*32kB (UM) 11*64kB (UM)
> 4*128kB (M) 4*256kB (UM) 3*512kB (M) 0*1024kB 0*2048kB 0*4096kB = 4560kB
> 222 total pagecache pages
> 3824 pages RAM
> 0 pages HighMem/MovableOnly
> 858 pages reserved
> nommu: Allocation of length 860160 from process 67 (mosquitto_pub) failed
> active_anon:0 inactive_anon:0 isolated_anon:0
> active_file:0 inactive_file:20 isolated_file:0
> unevictable:202 dirty:0 writeback:0 unstable:0
> slab_reclaimable:0 slab_unreclaimable:809
> mapped:0 shmem:0 pagetables:0 bounce:0
> free:1140 free_pcp:0 free_cma:0
> Node 0 active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB
> unevictable:808kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB
> writeback:0kB shmem:0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
> Normal free:4560kB min:432kB low:540kB high:648kB reserved_highatomic:0KB
> active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB
> unevictable:808kB writepending:0kB present:15296kB managed:11864kB
> mlocked:0kB kernel_stack:280kB pagetables:0kB bounce:0kB free_pcp:0kB
> local_pcp:0kB free_cma:0kB
> lowmem_reserve[]: 0 0
> Normal: 30*4kB (UM) 29*8kB (UM) 11*16kB (UM) 8*32kB (UM) 11*64kB (UM)
> 4*128kB (M) 4*256kB (UM) 3*512kB (M) 0*1024kB 0*2048kB 0*4096kB = 4560kB
> 222 total pagecache pages
> binfmt_flat: Unable to mmap process text, errno -12
>
> ----------------------------------------------------------------------------
> ----------------------------------------------------------------------------
> ----------------------------------------------------------------------------
> ---
> -----Original Message-----
> From: Peter Seiderer <ps.report@gmx.net>
> Sent: Sunday, October 25, 2020 10:22 PM
> To: RR <rob.r374@gmail.com>
> Cc: buildroot at busybox.net
> Subject: Re: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7
>
> Hello Rob,
>
> On Sun, 25 Oct 2020 11:33:05 +0100, "RR" <rob.r374@gmail.com> wrote:
>
> > Hello,
> >
> > I'm enclosing my defconfig... I'm basically compiling for ARM
> > Cortex-M7
> > (stm32f769 discovery board).
> >
> > What I have additionally spotted is that mosquiotto_sub doesn't crash
> > with same error, but it doesn't have ssl options working.
> > So probably my first problem is that libopenssl doesn't compile
> properly...
> >
> > When I try to compile it separately, by using
> > 	make libopenssl-reconfigure
> >
> > it seems that it doesn't have target architecture defined. If I add
> > BR2_PACKAGE_TARGET_ARCH="arm-v4" to make call, I end up in error of
> > missing file (it's also weird why win32 files are included in
> > compilation at all) :
> >
> > /home/robi/Razvoj/Linux/Buildroot/JE_UcLinux/buildroot/../host/bin/arm
> > -build root-uclinux-uclibcgnueabi-gcc  -I. -Iinclude -fPIC -pthread
> > -Wa,--noexecstack -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
> > -D_FILE_OFFSET_BITS=64  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
> > -D_FILE_OFFSET_BITS=64  -Os    -Wl,-elf2flt -static -DHAVE_FORK=0
> > -DOPENSSL_NO_MADVISE -DOPENSSL_NO_ASYNC    -Wl,-elf2flt -static
> > -DOPENSSL_USE_NODELETE -DOPENSSL_PIC -DOPENSSL_CPUID_OBJ
> > -DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_GF2m -DSHA1_ASM -DSHA256_ASM
> > -DSHA512_ASM -DKECCAK1600_ASM -DAES_ASM -DBSAES_ASM -DGHASH_ASM
> > -DECP_NISTZ256_ASM -DPOLY1305_ASM -DOPENSSLDIR="\"/etc/ssl\""
> > -DENGINESDIR="\"/usr/lib/engines-1.1\"" -DZLIB -DNDEBUG
> > -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -MMD
> > -MF crypto/dso/dso_win32.d.tmp -MT crypto/dso/dso_win32.o -c -o
> > crypto/dso/dso_win32.o crypto/dso/dso_win32.c
> > crypto/dso/dso_dlfcn.c:28:12: fatal error: dlfcn.h: No such file or
> > directory  #  include <dlfcn.h>
> >             ^~~~~~~~~
> > compilation terminated.
> >
> > Any advice where I can learn or get libopenssl compiled properly?
>
> Use buildroot and take a look at the log and/or compile output...
>
>
> >  Then I can proceed to mosquitto, because it uses libopenssl.
>
> The following defconfig compiles fine (no runtime test because of lack of
> hardware):
>
> BR2_arm=y
> BR2_cortex_m7=y
> BR2_TOOLCHAIN_BUILDROOT_CXX=y
> BR2_PACKAGE_HOST_ELF2FLT=y
> BR2_SYSTEM_DHCP="eth0"
> BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
> BR2_PACKAGE_SDL=y
> BR2_PACKAGE_SDL_TTF=y
> BR2_PACKAGE_MBEDTLS=y
> BR2_PACKAGE_OPENSSL=y
> BR2_PACKAGE_LIBOPENSSL_BIN=y
> BR2_PACKAGE_LIBPTHREAD_STUBS=y
> BR2_PACKAGE_DROPBEAR=y
> BR2_PACKAGE_MOSQUITTO=y
> BR2_PACKAGE_NET_TOOLS=y
> BR2_TARGET_ROOTFS_EXT2=y
> # BR2_TARGET_ROOTFS_TAR is not set
> BR2_PACKAGE_HOST_OPENOCD=y
>
>
> The mosquitto package compile gets the right make options, e.g.:
>
> /usr/bin/make -j17 -C .../build/mosquitto-1.6.12 [...] WITH_WRAP=no
> WITH_DOCS=no WITH_STATIC_LIBRARIES=yes WITH_SHARED_LIBRARIES=no WITH_ADNS=no
> WITH_THREADING=no WITH_TLS=yes
> CLIENT_STATIC_LDADD="`/home/seiderer/Work/Buildroot/build_openssl_mosquitto_
> 001/host/bin/pkg-config --libs openssl`" WITH_SRV=no WITH_WEBSOCKETS=no
>
>
> > I'm probably doing something obviously wrong...
> > I'm using buildroot release tag 2020.05...
> >
> > Thanks in advance,
> > Regards,
> >
> > -----Original Message-----
> > From: Peter Seiderer <ps.report@gmx.net>
> > Sent: Monday, October 19, 2020 9:11 PM
> > To: rob.r374 at gmail.com
> > Cc: buildroot at busybox.net
> > Subject: Re: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7
> >
> > Hello Rob,
> >
> > On Mon, 19 Oct 2020 02:20:00 +0200, <rob.r374@gmail.com> wrote:
> >
> > > Hello,
> > >
> > >
> > >
> > > I'm trying to include Mosquitto with OpenSSL support on Buildroot.
> > >
> > >
> > >
> > > On working Buildroot basic build, I've added packages and setup
> > > static libs
> > > :
> > >
> > > BR2_PACKAGE_LIBOPENSSL=y
> > >
> > > BR2_PACKAGE_MOSQUITTO=y
> > >
> > > BR2_PACKAGE_MBEDTLS=y
> > >
> > > BR2_STATIC_LIBS=y
> > >
> > > If I try to run Mosquitto tools (and MbedTLS test), I get :
> > >
> > > ~ # mosquitto_pub
> > >
> > > binfmt_flat: reference 0xffb4d0 to shared library 127, killing
> > > mosquitto_pub!
> > >
> > > SEGV
> > >
> > > ~ # mosquitto_sub
> > >
> > > Error: You must specify a topic to subscribe to.
> > >
> > > Use 'mosquitto_sub --help' to see usage.
> > >
> > >
> > >
> > > ~ # ssl_client2
> > >
> > > sh: can't execute 'ssl_client2': No such file or directory
>
> ssh_client2 is from mbedtls, but BR2_PACKAGE_MBEDTLS_PROGRAMS depends on
> BR2_USE_MMU which is not set for your configuration...
>
> > >
> > >
> > >
> > > It's weird, because mosquitto_pub complains about shared lib, but I
> > > have defined static libraries only (at least I think so).
> > >
> > > In addition, mosquitto_sub works, but it seems it doesn't receive
> > > SSL related arguments - seems like it was not compiled with OpenSSL lib.
>
> What do your mean with 'doesn't receive SSL related arguments'?
>
> Did your try a full re-build?
>
> Regards,
> Peter
>
>
> > >
> > > Also, ssl_client2 or other tools from MbedTLS cannot be found.
> > >
> > >
> > >
> > > How to solve those problems ?
> > >
> > >
> > >
> > > Also I'm not sure how to check for each package - compilation,
> > > installation, errors, warnings etc.
> >
> > Did you do/try a full rebuild after changing your config ([1])?
> >
> > If the problem still exists after a full rebuild please provide your
> > .config or defconfig file and the buildroot version your are using...
> >
> > Regards,
> > Peter
> >
> > [1] https://buildroot.org/downloads/manual/manual.html#full-rebuild
> >
> > >
> > >
> > >
> > > Regards,
> > >
> > > Rob.
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
>
>

[Buildroot] OpenSSL & Mosquitto on ARM Cortex M7

[rob.r374 at gmail.com]

Hello,

thanks Peter... You've helped me a lot.

Compile now goes ok, but when I run on target I get :
~ # mosquitto_pub 
mosquitto_pub: page allocation failure: order:8, mode:0xcc0(GFP_KERNEL),
nodemask=(null)
nommu: Allocation of length 860160 from process 59 (mosquitto_pub) failed
binfmt_flat: Unable to mmap process text, errno -12
SEGV

And if I try to check flat file format and stack size of binary, I cannot
access binary from build system :
/buildroot/output/host/arm-buildroot-uclinux-uclibcgnueabi/bin$ ./flthdr -p
./../../../target/usr/bin/mosquitto_pub 
Cannot open ./../../../target/usr/bin/mosquitto_pub

So I cannot check stack size and I'm trapped. 
Is there any other option to declare stack size in compilation step of
mosquitto under buildroot ?
Any advice? Anyone more experienced on these non-mmu and flat file format
devices ?

Thanks in advance,
Regards,
Rob.



-----Izvirno sporo?ilo-----
Od: Peter Seiderer <ps.report@gmx.net> 
Poslano: torek, 27. oktober 2020 23:08
Za: RR <rob.r374@gmail.com>
Kp: buildroot at busybox.net
Zadeva: Re: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7

Hello Rob,

On Tue, 27 Oct 2020 08:41:38 +0100, "RR" <rob.r374@gmail.com> wrote:

> Hello Peter,
>
> thank you a lot. It seems that compilation now goes ok.
> It seems that I'm closer to the solution.
>
> In runtime, I get error on memory allocation. Probably I need to 
> increase related stack-size, but don't know how to.
> Is now problem only related to add more stack size ? If yes, how can I 
> do this ?
> If not, please give me advice what to do next...

Sorry, did not own a sample of your hardware (and lacking any experience on
this type of 'small' embedded systems), so no more help from my side...

Regards,
Peter

>
> The only way I found was  _FLAT_STACKSIZE but I haven't found any 
> examples on how to use it.
> Adding MOSQUITTO_FLAT_STACKSIZE=1048576 didn't help. I was  probably 
> doing it wrong way...
> Also, mosquitto produces more binaries as  output...
>
> Thanks in advance,
> Regards,
> Rob.
>
> Command line:
> ~ # free
>                         total        used        free      shared
> buff/cache   available
> Mem:          11864        6728        3908           0        1228
> 3460
>
> ~ # mosquitto_pub -d --debug -h xxxxxxxxxxxxx  -t yyyyyyyyyyyyy -m 
> Test -i mo
> sq_pub111 --cafile /etc/res/ca.crt -p 8883  --cert /etc/res/client.crt 
> --key /et c/res/client.key --insecure --repeat 10000 --repeat-delay 10
> mosquitto_pub: page allocation failure: order:8, 
> mode:0xcc0(GFP_KERNEL),
> nodemask=(null)
> nommu: Allocation of length 860160 from process 67 (mosquitto_pub) 
> failed
> binfmt_flat: Unable to mmap process text, errno -12 SEGV
>
>
> DMESG:
> Mem-Info:
> active_anon:0 inactive_anon:0 isolated_anon:0
> active_file:0 inactive_file:20 isolated_file:0
> unevictable:202 dirty:0 writeback:0 unstable:0
> slab_reclaimable:0 slab_unreclaimable:809
> mapped:0 shmem:0 pagetables:0 bounce:0
> free:1140 free_pcp:0 free_cma:0
> Node 0 active_anon:0kB inactive_anon:0kB active_file:0kB 
> inactive_file:80kB unevictable:808kB isolated(anon):0kB 
> isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB 
> writeback_tmp:0kB unstable:0kB all_unreclaimable? no Normal 
> free:4560kB min:432kB low:540kB high:648kB reserved_highatomic:0KB 
> active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB 
> unevictable:808kB writepending:0kB present:15296kB managed:11864kB 
> mlocked:0kB kernel_stack:280kB pagetables:0kB bounce:0kB free_pcp:0kB 
> local_pcp:0kB free_cma:0kB
> lowmem_reserve[]: 0 0
> Normal: 30*4kB (UM) 29*8kB (UM) 11*16kB (UM) 8*32kB (UM) 11*64kB (UM) 
> 4*128kB (M) 4*256kB (UM) 3*512kB (M) 0*1024kB 0*2048kB 0*4096kB = 
> 4560kB
> 222 total pagecache pages
> 3824 pages RAM
> 0 pages HighMem/MovableOnly
> 858 pages reserved
> nommu: Allocation of length 860160 from process 67 (mosquitto_pub) 
> failed
> active_anon:0 inactive_anon:0 isolated_anon:0
> active_file:0 inactive_file:20 isolated_file:0
> unevictable:202 dirty:0 writeback:0 unstable:0
> slab_reclaimable:0 slab_unreclaimable:809
> mapped:0 shmem:0 pagetables:0 bounce:0
> free:1140 free_pcp:0 free_cma:0
> Node 0 active_anon:0kB inactive_anon:0kB active_file:0kB 
> inactive_file:80kB unevictable:808kB isolated(anon):0kB 
> isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB 
> writeback_tmp:0kB unstable:0kB all_unreclaimable? no Normal 
> free:4560kB min:432kB low:540kB high:648kB reserved_highatomic:0KB 
> active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB 
> unevictable:808kB writepending:0kB present:15296kB managed:11864kB 
> mlocked:0kB kernel_stack:280kB pagetables:0kB bounce:0kB free_pcp:0kB 
> local_pcp:0kB free_cma:0kB
> lowmem_reserve[]: 0 0
> Normal: 30*4kB (UM) 29*8kB (UM) 11*16kB (UM) 8*32kB (UM) 11*64kB (UM) 
> 4*128kB (M) 4*256kB (UM) 3*512kB (M) 0*1024kB 0*2048kB 0*4096kB = 
> 4560kB
> 222 total pagecache pages
> binfmt_flat: Unable to mmap process text, errno -12
>
> ----------------------------------------------------------------------
> ------
> ----------------------------------------------------------------------
> ------
> ----------------------------------------------------------------------
> ------
> ---
> -----Original Message-----
> From: Peter Seiderer <ps.report@gmx.net>
> Sent: Sunday, October 25, 2020 10:22 PM
> To: RR <rob.r374@gmail.com>
> Cc: buildroot at busybox.net
> Subject: Re: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7
>
> Hello Rob,
>
> On Sun, 25 Oct 2020 11:33:05 +0100, "RR" <rob.r374@gmail.com> wrote:
>
> > Hello,
> >
> > I'm enclosing my defconfig... I'm basically compiling for ARM
> > Cortex-M7
> > (stm32f769 discovery board).
> >
> > What I have additionally spotted is that mosquiotto_sub doesn't 
> > crash with same error, but it doesn't have ssl options working.
> > So probably my first problem is that libopenssl doesn't compile
> properly...
> >
> > When I try to compile it separately, by using
> > 	make libopenssl-reconfigure
> >
> > it seems that it doesn't have target architecture defined. If I add 
> > BR2_PACKAGE_TARGET_ARCH="arm-v4" to make call, I end up in error of 
> > missing file (it's also weird why win32 files are included in 
> > compilation at all) :
> >
> > /home/robi/Razvoj/Linux/Buildroot/JE_UcLinux/buildroot/../host/bin/a
> > rm -build root-uclinux-uclibcgnueabi-gcc  -I. -Iinclude -fPIC 
> > -pthread -Wa,--noexecstack -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
> > -D_FILE_OFFSET_BITS=64  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
> > -D_FILE_OFFSET_BITS=64  -Os    -Wl,-elf2flt -static -DHAVE_FORK=0
> > -DOPENSSL_NO_MADVISE -DOPENSSL_NO_ASYNC    -Wl,-elf2flt -static
> > -DOPENSSL_USE_NODELETE -DOPENSSL_PIC -DOPENSSL_CPUID_OBJ 
> > -DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_GF2m -DSHA1_ASM -DSHA256_ASM 
> > -DSHA512_ASM -DKECCAK1600_ASM -DAES_ASM -DBSAES_ASM -DGHASH_ASM 
> > -DECP_NISTZ256_ASM -DPOLY1305_ASM -DOPENSSLDIR="\"/etc/ssl\""
> > -DENGINESDIR="\"/usr/lib/engines-1.1\"" -DZLIB -DNDEBUG 
> > -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 
> > -MMD -MF crypto/dso/dso_win32.d.tmp -MT crypto/dso/dso_win32.o -c -o 
> > crypto/dso/dso_win32.o crypto/dso/dso_win32.c
> > crypto/dso/dso_dlfcn.c:28:12: fatal error: dlfcn.h: No such file or 
> > directory  #  include <dlfcn.h>
> >             ^~~~~~~~~
> > compilation terminated.
> >
> > Any advice where I can learn or get libopenssl compiled properly?
>
> Use buildroot and take a look at the log and/or compile output...
>
>
> >  Then I can proceed to mosquitto, because it uses libopenssl.
>
> The following defconfig compiles fine (no runtime test because of lack 
> of
> hardware):
>
> BR2_arm=y
> BR2_cortex_m7=y
> BR2_TOOLCHAIN_BUILDROOT_CXX=y
> BR2_PACKAGE_HOST_ELF2FLT=y
> BR2_SYSTEM_DHCP="eth0"
> BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
> BR2_PACKAGE_SDL=y
> BR2_PACKAGE_SDL_TTF=y
> BR2_PACKAGE_MBEDTLS=y
> BR2_PACKAGE_OPENSSL=y
> BR2_PACKAGE_LIBOPENSSL_BIN=y
> BR2_PACKAGE_LIBPTHREAD_STUBS=y
> BR2_PACKAGE_DROPBEAR=y
> BR2_PACKAGE_MOSQUITTO=y
> BR2_PACKAGE_NET_TOOLS=y
> BR2_TARGET_ROOTFS_EXT2=y
> # BR2_TARGET_ROOTFS_TAR is not set
> BR2_PACKAGE_HOST_OPENOCD=y
>
>
> The mosquitto package compile gets the right make options, e.g.:
>
> /usr/bin/make -j17 -C .../build/mosquitto-1.6.12 [...] WITH_WRAP=no 
> WITH_DOCS=no WITH_STATIC_LIBRARIES=yes WITH_SHARED_LIBRARIES=no 
> WITH_ADNS=no WITH_THREADING=no WITH_TLS=yes 
> CLIENT_STATIC_LDADD="`/home/seiderer/Work/Buildroot/build_openssl_mosq
> uitto_ 001/host/bin/pkg-config --libs openssl`" WITH_SRV=no 
> WITH_WEBSOCKETS=no
>
>
> > I'm probably doing something obviously wrong...
> > I'm using buildroot release tag 2020.05...
> >
> > Thanks in advance,
> > Regards,
> >
> > -----Original Message-----
> > From: Peter Seiderer <ps.report@gmx.net>
> > Sent: Monday, October 19, 2020 9:11 PM
> > To: rob.r374 at gmail.com
> > Cc: buildroot at busybox.net
> > Subject: Re: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7
> >
> > Hello Rob,
> >
> > On Mon, 19 Oct 2020 02:20:00 +0200, <rob.r374@gmail.com> wrote:
> >
> > > Hello,
> > >
> > >
> > >
> > > I'm trying to include Mosquitto with OpenSSL support on Buildroot.
> > >
> > >
> > >
> > > On working Buildroot basic build, I've added packages and setup 
> > > static libs
> > > :
> > >
> > > BR2_PACKAGE_LIBOPENSSL=y
> > >
> > > BR2_PACKAGE_MOSQUITTO=y
> > >
> > > BR2_PACKAGE_MBEDTLS=y
> > >
> > > BR2_STATIC_LIBS=y
> > >
> > > If I try to run Mosquitto tools (and MbedTLS test), I get :
> > >
> > > ~ # mosquitto_pub
> > >
> > > binfmt_flat: reference 0xffb4d0 to shared library 127, killing 
> > > mosquitto_pub!
> > >
> > > SEGV
> > >
> > > ~ # mosquitto_sub
> > >
> > > Error: You must specify a topic to subscribe to.
> > >
> > > Use 'mosquitto_sub --help' to see usage.
> > >
> > >
> > >
> > > ~ # ssl_client2
> > >
> > > sh: can't execute 'ssl_client2': No such file or directory
>
> ssh_client2 is from mbedtls, but BR2_PACKAGE_MBEDTLS_PROGRAMS depends 
> on BR2_USE_MMU which is not set for your configuration...
>
> > >
> > >
> > >
> > > It's weird, because mosquitto_pub complains about shared lib, but 
> > > I have defined static libraries only (at least I think so).
> > >
> > > In addition, mosquitto_sub works, but it seems it doesn't receive 
> > > SSL related arguments - seems like it was not compiled with OpenSSL
lib.
>
> What do your mean with 'doesn't receive SSL related arguments'?
>
> Did your try a full re-build?
>
> Regards,
> Peter
>
>
> > >
> > > Also, ssl_client2 or other tools from MbedTLS cannot be found.
> > >
> > >
> > >
> > > How to solve those problems ?
> > >
> > >
> > >
> > > Also I'm not sure how to check for each package - compilation, 
> > > installation, errors, warnings etc.
> >
> > Did you do/try a full rebuild after changing your config ([1])?
> >
> > If the problem still exists after a full rebuild please provide your 
> > .config or defconfig file and the buildroot version your are using...
> >
> > Regards,
> > Peter
> >
> > [1] https://buildroot.org/downloads/manual/manual.html#full-rebuild
> >
> > >
> > >
> > >
> > > Regards,
> > >
> > > Rob.
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
>
>



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[Buildroot] OpenSSL & Mosquitto on ARM Cortex M7

[RR]

Hello,

I've got one step further, but still don't know how to solve it. 
It seems that mosquitto is compiled in a bit different way as other working
binaries in nommu and flat file format environment
(ARM Cortex M7).

For example, when I check dropbear binary (which works) and mosquitto which
segfaults with flthdr I get output below.
I'm not sure if this is the cause of segfault, but would like to check
whether it is ok or not.

What is the difference between Load-to-Ram and Has-PIC-GOT flags? 
It seems that I can add Load-to-Ram to Has-PIC-GOT using flthdr tool, but
cannot get rid ot "Has-PIC-GOT" flag.

Thanks in advance,
Regards,
Rob.


Flthdr output:

 ./dropbearkey
    Magic:        bFLT
    Rev:          4
    Build Date:   Mon Nov  2 00:02:47 2020
    Entry:        0x45
    Data Start:   0x2d374
    Data End:     0x3bd88
    BSS End:      0x51f00
    Stack Size:   0x1000
    Reloc Start:  0x3bd88
    Reloc Count:  0xa6b
    Flags:        0x1 ( Load-to-Ram )

./mosquitto_pub
    Magic:        bFLT
    Rev:          4
    Build Date:   Mon Nov  2 01:47:54 2020
    Entry:        0x45
    Data Start:   0xd17b0
    Data End:     0x144e40
    BSS End:      0x14c0c0
    Stack Size:   0x100000
    Reloc Start:  0x144e40
    Reloc Count:  0x2d68
    Flags:        0x2 ( Has-PIC-GOT )

When I run those files :

~ # mosquitto_pub
warn_alloc: 1 callbacks suppressed
mosquitto_pub: page allocation failure: order:8, mode:0xcc0(GFP_KERNEL),
nodemask=(null)
nommu: Allocation of length 860160 from process 169 (mosquitto_pub) failed
binfmt_flat: Unable to mmap process text, errno -12
SEGV

~ # dropbearkey
Must specify a key filename
Usage: dropbearkey -t <type> -f <filename> [-s bits]
-t type Type of key to generate. One of:
                rsa
                ecdsa
-f filename    Use filename for the secret key.
               ~/.ssh/id_dropbear is recommended for client keys.
-s bits Key size in bits, should be a multiple of 8 (optional)
           ECDSA has sizes 256 384 521 
-y              Just print the publickey and fingerprint for the
                private key in <filename>.


-----Original Message-----
From: rob.r374@gmail.com <rob.r374@gmail.com> 
Sent: Wednesday, October 28, 2020 2:30 AM
To: 'Peter Seiderer' <ps.report@gmx.net>
Cc: buildroot at busybox.net
Subject: RE: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7

Hello,

thanks Peter... You've helped me a lot.

Compile now goes ok, but when I run on target I get :
~ # mosquitto_pub
mosquitto_pub: page allocation failure: order:8, mode:0xcc0(GFP_KERNEL),
nodemask=(null)
nommu: Allocation of length 860160 from process 59 (mosquitto_pub) failed
binfmt_flat: Unable to mmap process text, errno -12 SEGV

And if I try to check flat file format and stack size of binary, I cannot
access binary from build system :
/buildroot/output/host/arm-buildroot-uclinux-uclibcgnueabi/bin$ ./flthdr -p
./../../../target/usr/bin/mosquitto_pub
Cannot open ./../../../target/usr/bin/mosquitto_pub

So I cannot check stack size and I'm trapped. 
Is there any other option to declare stack size in compilation step of
mosquitto under buildroot ?
Any advice? Anyone more experienced on these non-mmu and flat file format
devices ?

Thanks in advance,
Regards,
Rob.



-----Izvirno sporo?ilo-----
Od: Peter Seiderer <ps.report@gmx.net>
Poslano: torek, 27. oktober 2020 23:08
Za: RR <rob.r374@gmail.com>
Kp: buildroot at busybox.net
Zadeva: Re: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7

Hello Rob,

On Tue, 27 Oct 2020 08:41:38 +0100, "RR" <rob.r374@gmail.com> wrote:

> Hello Peter,
>
> thank you a lot. It seems that compilation now goes ok.
> It seems that I'm closer to the solution.
>
> In runtime, I get error on memory allocation. Probably I need to 
> increase related stack-size, but don't know how to.
> Is now problem only related to add more stack size ? If yes, how can I 
> do this ?
> If not, please give me advice what to do next...

Sorry, did not own a sample of your hardware (and lacking any experience on
this type of 'small' embedded systems), so no more help from my side...

Regards,
Peter

>
> The only way I found was  _FLAT_STACKSIZE but I haven't found any 
> examples on how to use it.
> Adding MOSQUITTO_FLAT_STACKSIZE=1048576 didn't help. I was  probably 
> doing it wrong way...
> Also, mosquitto produces more binaries as  output...
>
> Thanks in advance,
> Regards,
> Rob.
>
> Command line:
> ~ # free
>                         total        used        free      shared
> buff/cache   available
> Mem:          11864        6728        3908           0        1228
> 3460
>
> ~ # mosquitto_pub -d --debug -h xxxxxxxxxxxxx  -t yyyyyyyyyyyyy -m 
> Test -i mo
> sq_pub111 --cafile /etc/res/ca.crt -p 8883  --cert /etc/res/client.crt 
> --key /et c/res/client.key --insecure --repeat 10000 --repeat-delay 10
> mosquitto_pub: page allocation failure: order:8, 
> mode:0xcc0(GFP_KERNEL),
> nodemask=(null)
> nommu: Allocation of length 860160 from process 67 (mosquitto_pub) 
> failed
> binfmt_flat: Unable to mmap process text, errno -12 SEGV
>
>
> DMESG:
> Mem-Info:
> active_anon:0 inactive_anon:0 isolated_anon:0
> active_file:0 inactive_file:20 isolated_file:0
> unevictable:202 dirty:0 writeback:0 unstable:0
> slab_reclaimable:0 slab_unreclaimable:809
> mapped:0 shmem:0 pagetables:0 bounce:0
> free:1140 free_pcp:0 free_cma:0
> Node 0 active_anon:0kB inactive_anon:0kB active_file:0kB 
> inactive_file:80kB unevictable:808kB isolated(anon):0kB 
> isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB 
> writeback_tmp:0kB unstable:0kB all_unreclaimable? no Normal 
> free:4560kB min:432kB low:540kB high:648kB reserved_highatomic:0KB 
> active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB 
> unevictable:808kB writepending:0kB present:15296kB managed:11864kB 
> mlocked:0kB kernel_stack:280kB pagetables:0kB bounce:0kB free_pcp:0kB 
> local_pcp:0kB free_cma:0kB
> lowmem_reserve[]: 0 0
> Normal: 30*4kB (UM) 29*8kB (UM) 11*16kB (UM) 8*32kB (UM) 11*64kB (UM) 
> 4*128kB (M) 4*256kB (UM) 3*512kB (M) 0*1024kB 0*2048kB 0*4096kB = 
> 4560kB
> 222 total pagecache pages
> 3824 pages RAM
> 0 pages HighMem/MovableOnly
> 858 pages reserved
> nommu: Allocation of length 860160 from process 67 (mosquitto_pub) 
> failed
> active_anon:0 inactive_anon:0 isolated_anon:0
> active_file:0 inactive_file:20 isolated_file:0
> unevictable:202 dirty:0 writeback:0 unstable:0
> slab_reclaimable:0 slab_unreclaimable:809
> mapped:0 shmem:0 pagetables:0 bounce:0
> free:1140 free_pcp:0 free_cma:0
> Node 0 active_anon:0kB inactive_anon:0kB active_file:0kB 
> inactive_file:80kB unevictable:808kB isolated(anon):0kB 
> isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB 
> writeback_tmp:0kB unstable:0kB all_unreclaimable? no Normal 
> free:4560kB min:432kB low:540kB high:648kB reserved_highatomic:0KB 
> active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB 
> unevictable:808kB writepending:0kB present:15296kB managed:11864kB 
> mlocked:0kB kernel_stack:280kB pagetables:0kB bounce:0kB free_pcp:0kB 
> local_pcp:0kB free_cma:0kB
> lowmem_reserve[]: 0 0
> Normal: 30*4kB (UM) 29*8kB (UM) 11*16kB (UM) 8*32kB (UM) 11*64kB (UM) 
> 4*128kB (M) 4*256kB (UM) 3*512kB (M) 0*1024kB 0*2048kB 0*4096kB = 
> 4560kB
> 222 total pagecache pages
> binfmt_flat: Unable to mmap process text, errno -12
>
> ----------------------------------------------------------------------
> ------
> ----------------------------------------------------------------------
> ------
> ----------------------------------------------------------------------
> ------
> ---
> -----Original Message-----
> From: Peter Seiderer <ps.report@gmx.net>
> Sent: Sunday, October 25, 2020 10:22 PM
> To: RR <rob.r374@gmail.com>
> Cc: buildroot at busybox.net
> Subject: Re: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7
>
> Hello Rob,
>
> On Sun, 25 Oct 2020 11:33:05 +0100, "RR" <rob.r374@gmail.com> wrote:
>
> > Hello,
> >
> > I'm enclosing my defconfig... I'm basically compiling for ARM
> > Cortex-M7
> > (stm32f769 discovery board).
> >
> > What I have additionally spotted is that mosquiotto_sub doesn't 
> > crash with same error, but it doesn't have ssl options working.
> > So probably my first problem is that libopenssl doesn't compile
> properly...
> >
> > When I try to compile it separately, by using
> > 	make libopenssl-reconfigure
> >
> > it seems that it doesn't have target architecture defined. If I add 
> > BR2_PACKAGE_TARGET_ARCH="arm-v4" to make call, I end up in error of 
> > missing file (it's also weird why win32 files are included in 
> > compilation at all) :
> >
> > /home/robi/Razvoj/Linux/Buildroot/JE_UcLinux/buildroot/../host/bin/a
> > rm -build root-uclinux-uclibcgnueabi-gcc  -I. -Iinclude -fPIC 
> > -pthread -Wa,--noexecstack -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
> > -D_FILE_OFFSET_BITS=64  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
> > -D_FILE_OFFSET_BITS=64  -Os    -Wl,-elf2flt -static -DHAVE_FORK=0
> > -DOPENSSL_NO_MADVISE -DOPENSSL_NO_ASYNC    -Wl,-elf2flt -static
> > -DOPENSSL_USE_NODELETE -DOPENSSL_PIC -DOPENSSL_CPUID_OBJ 
> > -DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_GF2m -DSHA1_ASM -DSHA256_ASM 
> > -DSHA512_ASM -DKECCAK1600_ASM -DAES_ASM -DBSAES_ASM -DGHASH_ASM 
> > -DECP_NISTZ256_ASM -DPOLY1305_ASM -DOPENSSLDIR="\"/etc/ssl\""
> > -DENGINESDIR="\"/usr/lib/engines-1.1\"" -DZLIB -DNDEBUG 
> > -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 
> > -MMD -MF crypto/dso/dso_win32.d.tmp -MT crypto/dso/dso_win32.o -c -o 
> > crypto/dso/dso_win32.o crypto/dso/dso_win32.c
> > crypto/dso/dso_dlfcn.c:28:12: fatal error: dlfcn.h: No such file or 
> > directory  #  include <dlfcn.h>
> >             ^~~~~~~~~
> > compilation terminated.
> >
> > Any advice where I can learn or get libopenssl compiled properly?
>
> Use buildroot and take a look at the log and/or compile output...
>
>
> >  Then I can proceed to mosquitto, because it uses libopenssl.
>
> The following defconfig compiles fine (no runtime test because of lack 
> of
> hardware):
>
> BR2_arm=y
> BR2_cortex_m7=y
> BR2_TOOLCHAIN_BUILDROOT_CXX=y
> BR2_PACKAGE_HOST_ELF2FLT=y
> BR2_SYSTEM_DHCP="eth0"
> BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
> BR2_PACKAGE_SDL=y
> BR2_PACKAGE_SDL_TTF=y
> BR2_PACKAGE_MBEDTLS=y
> BR2_PACKAGE_OPENSSL=y
> BR2_PACKAGE_LIBOPENSSL_BIN=y
> BR2_PACKAGE_LIBPTHREAD_STUBS=y
> BR2_PACKAGE_DROPBEAR=y
> BR2_PACKAGE_MOSQUITTO=y
> BR2_PACKAGE_NET_TOOLS=y
> BR2_TARGET_ROOTFS_EXT2=y
> # BR2_TARGET_ROOTFS_TAR is not set
> BR2_PACKAGE_HOST_OPENOCD=y
>
>
> The mosquitto package compile gets the right make options, e.g.:
>
> /usr/bin/make -j17 -C .../build/mosquitto-1.6.12 [...] WITH_WRAP=no 
> WITH_DOCS=no WITH_STATIC_LIBRARIES=yes WITH_SHARED_LIBRARIES=no 
> WITH_ADNS=no WITH_THREADING=no WITH_TLS=yes 
> CLIENT_STATIC_LDADD="`/home/seiderer/Work/Buildroot/build_openssl_mosq
> uitto_ 001/host/bin/pkg-config --libs openssl`" WITH_SRV=no 
> WITH_WEBSOCKETS=no
>
>
> > I'm probably doing something obviously wrong...
> > I'm using buildroot release tag 2020.05...
> >
> > Thanks in advance,
> > Regards,
> >
> > -----Original Message-----
> > From: Peter Seiderer <ps.report@gmx.net>
> > Sent: Monday, October 19, 2020 9:11 PM
> > To: rob.r374 at gmail.com
> > Cc: buildroot at busybox.net
> > Subject: Re: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7
> >
> > Hello Rob,
> >
> > On Mon, 19 Oct 2020 02:20:00 +0200, <rob.r374@gmail.com> wrote:
> >
> > > Hello,
> > >
> > >
> > >
> > > I'm trying to include Mosquitto with OpenSSL support on Buildroot.
> > >
> > >
> > >
> > > On working Buildroot basic build, I've added packages and setup 
> > > static libs
> > > :
> > >
> > > BR2_PACKAGE_LIBOPENSSL=y
> > >
> > > BR2_PACKAGE_MOSQUITTO=y
> > >
> > > BR2_PACKAGE_MBEDTLS=y
> > >
> > > BR2_STATIC_LIBS=y
> > >
> > > If I try to run Mosquitto tools (and MbedTLS test), I get :
> > >
> > > ~ # mosquitto_pub
> > >
> > > binfmt_flat: reference 0xffb4d0 to shared library 127, killing 
> > > mosquitto_pub!
> > >
> > > SEGV
> > >
> > > ~ # mosquitto_sub
> > >
> > > Error: You must specify a topic to subscribe to.
> > >
> > > Use 'mosquitto_sub --help' to see usage.
> > >
> > >
> > >
> > > ~ # ssl_client2
> > >
> > > sh: can't execute 'ssl_client2': No such file or directory
>
> ssh_client2 is from mbedtls, but BR2_PACKAGE_MBEDTLS_PROGRAMS depends 
> on BR2_USE_MMU which is not set for your configuration...
>
> > >
> > >
> > >
> > > It's weird, because mosquitto_pub complains about shared lib, but 
> > > I have defined static libraries only (at least I think so).
> > >
> > > In addition, mosquitto_sub works, but it seems it doesn't receive 
> > > SSL related arguments - seems like it was not compiled with 
> > > OpenSSL
lib.
>
> What do your mean with 'doesn't receive SSL related arguments'?
>
> Did your try a full re-build?
>
> Regards,
> Peter
>
>
> > >
> > > Also, ssl_client2 or other tools from MbedTLS cannot be found.
> > >
> > >
> > >
> > > How to solve those problems ?
> > >
> > >
> > >
> > > Also I'm not sure how to check for each package - compilation, 
> > > installation, errors, warnings etc.
> >
> > Did you do/try a full rebuild after changing your config ([1])?
> >
> > If the problem still exists after a full rebuild please provide your 
> > .config or defconfig file and the buildroot version your are using...
> >
> > Regards,
> > Peter
> >
> > [1] https://buildroot.org/downloads/manual/manual.html#full-rebuild
> >
> > >
> > >
> > >
> > > Regards,
> > >
> > > Rob.
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
>
>



--
Ta e-po?ta je bila pregledana z Avast protivirusnim programom.
https://www.avast.com/antivirus

[Buildroot] OpenSSL & Mosquitto on ARM Cortex M7

[Peter Seiderer]

Hello Rob,

On Mon, 2 Nov 2020 11:33:00 +0100, "RR" <rob.r374@gmail.com> wrote:

> Hello,
> 
> I've got one step further, but still don't know how to solve it. 
> It seems that mosquitto is compiled in a bit different way as other working
> binaries in nommu and flat file format environment
> (ARM Cortex M7).
> 
> For example, when I check dropbear binary (which works) and mosquitto which
> segfaults with flthdr I get output below.
> I'm not sure if this is the cause of segfault, but would like to check
> whether it is ok or not.
> 
> What is the difference between Load-to-Ram and Has-PIC-GOT flags? 
> It seems that I can add Load-to-Ram to Has-PIC-GOT using flthdr tool, but
> cannot get rid ot "Has-PIC-GOT" flag.

To get rid of the 'Has-PIC-GOT' see patch [1] (apply the patch to your buildroot
source and re-build the mosquitto package), maybe it makes a positive difference
at run-time?

For the target I get now:

	$ ./host/arm-buildroot-uclinux-uclibcgnueabi/bin/flthdr target/usr/bin/mosquitto_sub 
target/usr/bin/mosquitto_sub
    Magic:        bFLT
    Rev:          4
    Build Date:   Mon Nov  2 17:24:45 2020
    Entry:        0x45
    Data Start:   0xd31dc
    Data End:     0x146e60
    BSS End:      0x14e170
    Stack Size:   0x1000
    Reloc Start:  0x146e60
    Reloc Count:  0x4bbb
    Flags:        0x1 ( Load-to-Ram )


A description of the various entries/flags can be found in [2]...

Regards,
Peter

[1] https://patchwork.ozlabs.org/project/buildroot/patch/20201102162948.23132-1-ps.report at gmx.net/
[2] http://read.pudn.com/downloads291/doc/fileformat/1309763/uClinux%20-%20BFLT%20Binary%20Flat%20Format.doc

> 
> Thanks in advance,
> Regards,
> Rob.
> 
> 
> Flthdr output:
> 
>  ./dropbearkey
>     Magic:        bFLT
>     Rev:          4
>     Build Date:   Mon Nov  2 00:02:47 2020
>     Entry:        0x45
>     Data Start:   0x2d374
>     Data End:     0x3bd88
>     BSS End:      0x51f00
>     Stack Size:   0x1000
>     Reloc Start:  0x3bd88
>     Reloc Count:  0xa6b
>     Flags:        0x1 ( Load-to-Ram )
> 
> ./mosquitto_pub
>     Magic:        bFLT
>     Rev:          4
>     Build Date:   Mon Nov  2 01:47:54 2020
>     Entry:        0x45
>     Data Start:   0xd17b0
>     Data End:     0x144e40
>     BSS End:      0x14c0c0
>     Stack Size:   0x100000
>     Reloc Start:  0x144e40
>     Reloc Count:  0x2d68
>     Flags:        0x2 ( Has-PIC-GOT )
> 
> When I run those files :
> 
> ~ # mosquitto_pub
> warn_alloc: 1 callbacks suppressed
> mosquitto_pub: page allocation failure: order:8, mode:0xcc0(GFP_KERNEL),
> nodemask=(null)
> nommu: Allocation of length 860160 from process 169 (mosquitto_pub) failed
> binfmt_flat: Unable to mmap process text, errno -12
> SEGV
> 
> ~ # dropbearkey
> Must specify a key filename
> Usage: dropbearkey -t <type> -f <filename> [-s bits]
> -t type Type of key to generate. One of:
>                 rsa
>                 ecdsa
> -f filename    Use filename for the secret key.
>                ~/.ssh/id_dropbear is recommended for client keys.
> -s bits Key size in bits, should be a multiple of 8 (optional)
>            ECDSA has sizes 256 384 521 
> -y              Just print the publickey and fingerprint for the
>                 private key in <filename>.
> 
> 
> -----Original Message-----
> From: rob.r374 at gmail.com <rob.r374@gmail.com> 
> Sent: Wednesday, October 28, 2020 2:30 AM
> To: 'Peter Seiderer' <ps.report@gmx.net>
> Cc: buildroot at busybox.net
> Subject: RE: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7
> 
> Hello,
> 
> thanks Peter... You've helped me a lot.
> 
> Compile now goes ok, but when I run on target I get :
> ~ # mosquitto_pub
> mosquitto_pub: page allocation failure: order:8, mode:0xcc0(GFP_KERNEL),
> nodemask=(null)
> nommu: Allocation of length 860160 from process 59 (mosquitto_pub) failed
> binfmt_flat: Unable to mmap process text, errno -12 SEGV
> 
> And if I try to check flat file format and stack size of binary, I cannot
> access binary from build system :
> /buildroot/output/host/arm-buildroot-uclinux-uclibcgnueabi/bin$ ./flthdr -p
> ./../../../target/usr/bin/mosquitto_pub
> Cannot open ./../../../target/usr/bin/mosquitto_pub
> 
> So I cannot check stack size and I'm trapped. 
> Is there any other option to declare stack size in compilation step of
> mosquitto under buildroot ?
> Any advice? Anyone more experienced on these non-mmu and flat file format
> devices ?
> 
> Thanks in advance,
> Regards,
> Rob.
> 
> 
> 
> -----Izvirno sporo?ilo-----
> Od: Peter Seiderer <ps.report@gmx.net>
> Poslano: torek, 27. oktober 2020 23:08
> Za: RR <rob.r374@gmail.com>
> Kp: buildroot at busybox.net
> Zadeva: Re: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7
> 
> Hello Rob,
> 
> On Tue, 27 Oct 2020 08:41:38 +0100, "RR" <rob.r374@gmail.com> wrote:
> 
> > Hello Peter,
> >
> > thank you a lot. It seems that compilation now goes ok.
> > It seems that I'm closer to the solution.
> >
> > In runtime, I get error on memory allocation. Probably I need to 
> > increase related stack-size, but don't know how to.
> > Is now problem only related to add more stack size ? If yes, how can I 
> > do this ?
> > If not, please give me advice what to do next...  
> 
> Sorry, did not own a sample of your hardware (and lacking any experience on
> this type of 'small' embedded systems), so no more help from my side...
> 
> Regards,
> Peter
> 
> >
> > The only way I found was  _FLAT_STACKSIZE but I haven't found any 
> > examples on how to use it.
> > Adding MOSQUITTO_FLAT_STACKSIZE=1048576 didn't help. I was  probably 
> > doing it wrong way...
> > Also, mosquitto produces more binaries as  output...
> >
> > Thanks in advance,
> > Regards,
> > Rob.
> >
> > Command line:
> > ~ # free
> >                         total        used        free      shared
> > buff/cache   available
> > Mem:          11864        6728        3908           0        1228
> > 3460
> >
> > ~ # mosquitto_pub -d --debug -h xxxxxxxxxxxxx  -t yyyyyyyyyyyyy -m 
> > Test -i mo
> > sq_pub111 --cafile /etc/res/ca.crt -p 8883  --cert /etc/res/client.crt 
> > --key /et c/res/client.key --insecure --repeat 10000 --repeat-delay 10
> > mosquitto_pub: page allocation failure: order:8, 
> > mode:0xcc0(GFP_KERNEL),
> > nodemask=(null)
> > nommu: Allocation of length 860160 from process 67 (mosquitto_pub) 
> > failed
> > binfmt_flat: Unable to mmap process text, errno -12 SEGV
> >
> >
> > DMESG:
> > Mem-Info:
> > active_anon:0 inactive_anon:0 isolated_anon:0
> > active_file:0 inactive_file:20 isolated_file:0
> > unevictable:202 dirty:0 writeback:0 unstable:0
> > slab_reclaimable:0 slab_unreclaimable:809
> > mapped:0 shmem:0 pagetables:0 bounce:0
> > free:1140 free_pcp:0 free_cma:0
> > Node 0 active_anon:0kB inactive_anon:0kB active_file:0kB 
> > inactive_file:80kB unevictable:808kB isolated(anon):0kB 
> > isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB 
> > writeback_tmp:0kB unstable:0kB all_unreclaimable? no Normal 
> > free:4560kB min:432kB low:540kB high:648kB reserved_highatomic:0KB 
> > active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB 
> > unevictable:808kB writepending:0kB present:15296kB managed:11864kB 
> > mlocked:0kB kernel_stack:280kB pagetables:0kB bounce:0kB free_pcp:0kB 
> > local_pcp:0kB free_cma:0kB
> > lowmem_reserve[]: 0 0
> > Normal: 30*4kB (UM) 29*8kB (UM) 11*16kB (UM) 8*32kB (UM) 11*64kB (UM) 
> > 4*128kB (M) 4*256kB (UM) 3*512kB (M) 0*1024kB 0*2048kB 0*4096kB = 
> > 4560kB
> > 222 total pagecache pages
> > 3824 pages RAM
> > 0 pages HighMem/MovableOnly
> > 858 pages reserved
> > nommu: Allocation of length 860160 from process 67 (mosquitto_pub) 
> > failed
> > active_anon:0 inactive_anon:0 isolated_anon:0
> > active_file:0 inactive_file:20 isolated_file:0
> > unevictable:202 dirty:0 writeback:0 unstable:0
> > slab_reclaimable:0 slab_unreclaimable:809
> > mapped:0 shmem:0 pagetables:0 bounce:0
> > free:1140 free_pcp:0 free_cma:0
> > Node 0 active_anon:0kB inactive_anon:0kB active_file:0kB 
> > inactive_file:80kB unevictable:808kB isolated(anon):0kB 
> > isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB 
> > writeback_tmp:0kB unstable:0kB all_unreclaimable? no Normal 
> > free:4560kB min:432kB low:540kB high:648kB reserved_highatomic:0KB 
> > active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB 
> > unevictable:808kB writepending:0kB present:15296kB managed:11864kB 
> > mlocked:0kB kernel_stack:280kB pagetables:0kB bounce:0kB free_pcp:0kB 
> > local_pcp:0kB free_cma:0kB
> > lowmem_reserve[]: 0 0
> > Normal: 30*4kB (UM) 29*8kB (UM) 11*16kB (UM) 8*32kB (UM) 11*64kB (UM) 
> > 4*128kB (M) 4*256kB (UM) 3*512kB (M) 0*1024kB 0*2048kB 0*4096kB = 
> > 4560kB
> > 222 total pagecache pages
> > binfmt_flat: Unable to mmap process text, errno -12
> >
> > ----------------------------------------------------------------------
> > ------
> > ----------------------------------------------------------------------
> > ------
> > ----------------------------------------------------------------------
> > ------
> > ---
> > -----Original Message-----
> > From: Peter Seiderer <ps.report@gmx.net>
> > Sent: Sunday, October 25, 2020 10:22 PM
> > To: RR <rob.r374@gmail.com>
> > Cc: buildroot at busybox.net
> > Subject: Re: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7
> >
> > Hello Rob,
> >
> > On Sun, 25 Oct 2020 11:33:05 +0100, "RR" <rob.r374@gmail.com> wrote:
> >  
> > > Hello,
> > >
> > > I'm enclosing my defconfig... I'm basically compiling for ARM
> > > Cortex-M7
> > > (stm32f769 discovery board).
> > >
> > > What I have additionally spotted is that mosquiotto_sub doesn't 
> > > crash with same error, but it doesn't have ssl options working.
> > > So probably my first problem is that libopenssl doesn't compile  
> > properly...  
> > >
> > > When I try to compile it separately, by using
> > > 	make libopenssl-reconfigure
> > >
> > > it seems that it doesn't have target architecture defined. If I add 
> > > BR2_PACKAGE_TARGET_ARCH="arm-v4" to make call, I end up in error of 
> > > missing file (it's also weird why win32 files are included in 
> > > compilation at all) :
> > >
> > > /home/robi/Razvoj/Linux/Buildroot/JE_UcLinux/buildroot/../host/bin/a
> > > rm -build root-uclinux-uclibcgnueabi-gcc  -I. -Iinclude -fPIC 
> > > -pthread -Wa,--noexecstack -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
> > > -D_FILE_OFFSET_BITS=64  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
> > > -D_FILE_OFFSET_BITS=64  -Os    -Wl,-elf2flt -static -DHAVE_FORK=0
> > > -DOPENSSL_NO_MADVISE -DOPENSSL_NO_ASYNC    -Wl,-elf2flt -static
> > > -DOPENSSL_USE_NODELETE -DOPENSSL_PIC -DOPENSSL_CPUID_OBJ 
> > > -DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_GF2m -DSHA1_ASM -DSHA256_ASM 
> > > -DSHA512_ASM -DKECCAK1600_ASM -DAES_ASM -DBSAES_ASM -DGHASH_ASM 
> > > -DECP_NISTZ256_ASM -DPOLY1305_ASM -DOPENSSLDIR="\"/etc/ssl\""
> > > -DENGINESDIR="\"/usr/lib/engines-1.1\"" -DZLIB -DNDEBUG 
> > > -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 
> > > -MMD -MF crypto/dso/dso_win32.d.tmp -MT crypto/dso/dso_win32.o -c -o 
> > > crypto/dso/dso_win32.o crypto/dso/dso_win32.c
> > > crypto/dso/dso_dlfcn.c:28:12: fatal error: dlfcn.h: No such file or 
> > > directory  #  include <dlfcn.h>
> > >             ^~~~~~~~~
> > > compilation terminated.
> > >
> > > Any advice where I can learn or get libopenssl compiled properly?  
> >
> > Use buildroot and take a look at the log and/or compile output...
> >
> >  
> > >  Then I can proceed to mosquitto, because it uses libopenssl.  
> >
> > The following defconfig compiles fine (no runtime test because of lack 
> > of
> > hardware):
> >
> > BR2_arm=y
> > BR2_cortex_m7=y
> > BR2_TOOLCHAIN_BUILDROOT_CXX=y
> > BR2_PACKAGE_HOST_ELF2FLT=y
> > BR2_SYSTEM_DHCP="eth0"
> > BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
> > BR2_PACKAGE_SDL=y
> > BR2_PACKAGE_SDL_TTF=y
> > BR2_PACKAGE_MBEDTLS=y
> > BR2_PACKAGE_OPENSSL=y
> > BR2_PACKAGE_LIBOPENSSL_BIN=y
> > BR2_PACKAGE_LIBPTHREAD_STUBS=y
> > BR2_PACKAGE_DROPBEAR=y
> > BR2_PACKAGE_MOSQUITTO=y
> > BR2_PACKAGE_NET_TOOLS=y
> > BR2_TARGET_ROOTFS_EXT2=y
> > # BR2_TARGET_ROOTFS_TAR is not set
> > BR2_PACKAGE_HOST_OPENOCD=y
> >
> >
> > The mosquitto package compile gets the right make options, e.g.:
> >
> > /usr/bin/make -j17 -C .../build/mosquitto-1.6.12 [...] WITH_WRAP=no 
> > WITH_DOCS=no WITH_STATIC_LIBRARIES=yes WITH_SHARED_LIBRARIES=no 
> > WITH_ADNS=no WITH_THREADING=no WITH_TLS=yes 
> > CLIENT_STATIC_LDADD="`/home/seiderer/Work/Buildroot/build_openssl_mosq
> > uitto_ 001/host/bin/pkg-config --libs openssl`" WITH_SRV=no 
> > WITH_WEBSOCKETS=no
> >
> >  
> > > I'm probably doing something obviously wrong...
> > > I'm using buildroot release tag 2020.05...
> > >
> > > Thanks in advance,
> > > Regards,
> > >
> > > -----Original Message-----
> > > From: Peter Seiderer <ps.report@gmx.net>
> > > Sent: Monday, October 19, 2020 9:11 PM
> > > To: rob.r374 at gmail.com
> > > Cc: buildroot at busybox.net
> > > Subject: Re: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7
> > >
> > > Hello Rob,
> > >
> > > On Mon, 19 Oct 2020 02:20:00 +0200, <rob.r374@gmail.com> wrote:
> > >  
> > > > Hello,
> > > >
> > > >
> > > >
> > > > I'm trying to include Mosquitto with OpenSSL support on Buildroot.
> > > >
> > > >
> > > >
> > > > On working Buildroot basic build, I've added packages and setup 
> > > > static libs
> > > > :
> > > >
> > > > BR2_PACKAGE_LIBOPENSSL=y
> > > >
> > > > BR2_PACKAGE_MOSQUITTO=y
> > > >
> > > > BR2_PACKAGE_MBEDTLS=y
> > > >
> > > > BR2_STATIC_LIBS=y
> > > >
> > > > If I try to run Mosquitto tools (and MbedTLS test), I get :
> > > >
> > > > ~ # mosquitto_pub
> > > >
> > > > binfmt_flat: reference 0xffb4d0 to shared library 127, killing 
> > > > mosquitto_pub!
> > > >
> > > > SEGV
> > > >
> > > > ~ # mosquitto_sub
> > > >
> > > > Error: You must specify a topic to subscribe to.
> > > >
> > > > Use 'mosquitto_sub --help' to see usage.
> > > >
> > > >
> > > >
> > > > ~ # ssl_client2
> > > >
> > > > sh: can't execute 'ssl_client2': No such file or directory  
> >
> > ssh_client2 is from mbedtls, but BR2_PACKAGE_MBEDTLS_PROGRAMS depends 
> > on BR2_USE_MMU which is not set for your configuration...
> >  
> > > >
> > > >
> > > >
> > > > It's weird, because mosquitto_pub complains about shared lib, but 
> > > > I have defined static libraries only (at least I think so).
> > > >
> > > > In addition, mosquitto_sub works, but it seems it doesn't receive 
> > > > SSL related arguments - seems like it was not compiled with 
> > > > OpenSSL  
> lib.
> >
> > What do your mean with 'doesn't receive SSL related arguments'?
> >
> > Did your try a full re-build?
> >
> > Regards,
> > Peter
> >
> >  
> > > >
> > > > Also, ssl_client2 or other tools from MbedTLS cannot be found.
> > > >
> > > >
> > > >
> > > > How to solve those problems ?
> > > >
> > > >
> > > >
> > > > Also I'm not sure how to check for each package - compilation, 
> > > > installation, errors, warnings etc.  
> > >
> > > Did you do/try a full rebuild after changing your config ([1])?
> > >
> > > If the problem still exists after a full rebuild please provide your 
> > > .config or defconfig file and the buildroot version your are using...
> > >
> > > Regards,
> > > Peter
> > >
> > > [1] https://buildroot.org/downloads/manual/manual.html#full-rebuild
> > >  
> > > >
> > > >
> > > >
> > > > Regards,
> > > >
> > > > Rob.
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >  
> > >  
> >
> >  
> 
> 
> 
> --
> Ta e-po?ta je bila pregledana z Avast protivirusnim programom.
> https://www.avast.com/antivirus
> 
> 
> _______________________________________________
> buildroot mailing list
> buildroot at busybox.net
> http://lists.busybox.net/mailman/listinfo/buildroot

[Buildroot] OpenSSL & Mosquitto on ARM Cortex M7

[RR]

Hello,

Peter, thanks for help...

I've got past that step and mosquitto_pub (sub) binary has now probably proper flag. 
But segfault remains... 

> ~ # mosquitto_pub
> warn_alloc: 1 callbacks suppressed
> mosquitto_pub: page allocation failure: order:8, mode:0xcc0(GFP_KERNEL),
> nodemask=(null)
> nommu: Allocation of length 860160 from process 169 (mosquitto_pub) failed
> binfmt_flat: Unable to mmap process text, errno -12
> SEGV

But I also have checked openSSL compilation and tried to produce openssl binary and it dies with similar error.
I have also compiled Mosquitto binaries without openssl and they work... 
So I guess problems origin in openssl build...

I get segfault on start :
~ # openssl
openssl: page allocation failure: order:9, mode:0xcc0(GFP_KERNEL), nodemask=(null)
nommu: Allocation of length 1728512 from process 95 (openssl) failed
binfmt_flat: Unable to allocate RAM for process text/data, errno -12
SEGV

It seems like having huge data segment...
 
../../../host/arm-buildroot-uclinux-uclibcgnueabi/bin/flthdr ./openssl 
./openssl
    Magic:        bFLT
    Rev:          4
    Build Date:   Sat Nov  7 20:55:17 2020
    Entry:        0x45
    Data Start:   0xf9c14
    Data End:     0x18bbc8
    BSS End:      0x194540
    Stack Size:   0x1000
    Reloc Start:  0x18bbc8
    Reloc Count:  0x67fa
    Flags:        0x1 ( Load-to-Ram )

Has anyone any experience on using OpenSSL and apps that use it in nonMMU environment ?
Are those segfaults cause by wrong compilation or lack of stack space ?

It seems that if I increase stack space, I only increase the memory that it tries to allocate on start.
Shouldn't be static library part of binary ?
Can I easily check what call tries to allocate this memory ?

Thanks in advance,
Regards,
Rob.


-----Original Message-----
From: Peter Seiderer <ps.report@gmx.net> 
Sent: Monday, November 2, 2020 5:38 PM
To: RR <rob.r374@gmail.com>
Cc: buildroot at busybox.net
Subject: Re: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7

Hello Rob,

On Mon, 2 Nov 2020 11:33:00 +0100, "RR" <rob.r374@gmail.com> wrote:

> Hello,
> 
> I've got one step further, but still don't know how to solve it. 
> It seems that mosquitto is compiled in a bit different way as other 
> working binaries in nommu and flat file format environment (ARM Cortex 
> M7).
> 
> For example, when I check dropbear binary (which works) and mosquitto 
> which segfaults with flthdr I get output below.
> I'm not sure if this is the cause of segfault, but would like to check 
> whether it is ok or not.
> 
> What is the difference between Load-to-Ram and Has-PIC-GOT flags? 
> It seems that I can add Load-to-Ram to Has-PIC-GOT using flthdr tool, 
> but cannot get rid ot "Has-PIC-GOT" flag.

To get rid of the 'Has-PIC-GOT' see patch [1] (apply the patch to your buildroot source and re-build the mosquitto package), maybe it makes a positive difference at run-time?

For the target I get now:

	$ ./host/arm-buildroot-uclinux-uclibcgnueabi/bin/flthdr target/usr/bin/mosquitto_sub target/usr/bin/mosquitto_sub
    Magic:        bFLT
    Rev:          4
    Build Date:   Mon Nov  2 17:24:45 2020
    Entry:        0x45
    Data Start:   0xd31dc
    Data End:     0x146e60
    BSS End:      0x14e170
    Stack Size:   0x1000
    Reloc Start:  0x146e60
    Reloc Count:  0x4bbb
    Flags:        0x1 ( Load-to-Ram )


A description of the various entries/flags can be found in [2]...

Regards,
Peter

[1] https://patchwork.ozlabs.org/project/buildroot/patch/20201102162948.23132-1-ps.report at gmx.net/
[2] http://read.pudn.com/downloads291/doc/fileformat/1309763/uClinux%20-%20BFLT%20Binary%20Flat%20Format.doc

> 
> Thanks in advance,
> Regards,
> Rob.
> 
> 
> Flthdr output:
> 
>  ./dropbearkey
>     Magic:        bFLT
>     Rev:          4
>     Build Date:   Mon Nov  2 00:02:47 2020
>     Entry:        0x45
>     Data Start:   0x2d374
>     Data End:     0x3bd88
>     BSS End:      0x51f00
>     Stack Size:   0x1000
>     Reloc Start:  0x3bd88
>     Reloc Count:  0xa6b
>     Flags:        0x1 ( Load-to-Ram )
> 
> ./mosquitto_pub
>     Magic:        bFLT
>     Rev:          4
>     Build Date:   Mon Nov  2 01:47:54 2020
>     Entry:        0x45
>     Data Start:   0xd17b0
>     Data End:     0x144e40
>     BSS End:      0x14c0c0
>     Stack Size:   0x100000
>     Reloc Start:  0x144e40
>     Reloc Count:  0x2d68
>     Flags:        0x2 ( Has-PIC-GOT )
> 
> When I run those files :
> 
> ~ # mosquitto_pub
> warn_alloc: 1 callbacks suppressed
> mosquitto_pub: page allocation failure: order:8, mode:0xcc0(GFP_KERNEL),
> nodemask=(null)
> nommu: Allocation of length 860160 from process 169 (mosquitto_pub) failed
> binfmt_flat: Unable to mmap process text, errno -12
> SEGV
> 
> ~ # dropbearkey
> Must specify a key filename
> Usage: dropbearkey -t <type> -f <filename> [-s bits]
> -t type Type of key to generate. One of:
>                 rsa
>                 ecdsa
> -f filename    Use filename for the secret key.
>                ~/.ssh/id_dropbear is recommended for client keys.
> -s bits Key size in bits, should be a multiple of 8 (optional)
>            ECDSA has sizes 256 384 521 
> -y              Just print the publickey and fingerprint for the
>                 private key in <filename>.
> 
> 
> -----Original Message-----
> From: rob.r374 at gmail.com <rob.r374@gmail.com> 
> Sent: Wednesday, October 28, 2020 2:30 AM
> To: 'Peter Seiderer' <ps.report@gmx.net>
> Cc: buildroot at busybox.net
> Subject: RE: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7
> 
> Hello,
> 
> thanks Peter... You've helped me a lot.
> 
> Compile now goes ok, but when I run on target I get :
> ~ # mosquitto_pub
> mosquitto_pub: page allocation failure: order:8, mode:0xcc0(GFP_KERNEL),
> nodemask=(null)
> nommu: Allocation of length 860160 from process 59 (mosquitto_pub) failed
> binfmt_flat: Unable to mmap process text, errno -12 SEGV
> 
> And if I try to check flat file format and stack size of binary, I cannot
> access binary from build system :
> /buildroot/output/host/arm-buildroot-uclinux-uclibcgnueabi/bin$ ./flthdr -p
> ./../../../target/usr/bin/mosquitto_pub
> Cannot open ./../../../target/usr/bin/mosquitto_pub
> 
> So I cannot check stack size and I'm trapped. 
> Is there any other option to declare stack size in compilation step of
> mosquitto under buildroot ?
> Any advice? Anyone more experienced on these non-mmu and flat file format
> devices ?
> 
> Thanks in advance,
> Regards,
> Rob.
> 
> 
> 
> -----Izvirno sporo?ilo-----
> Od: Peter Seiderer <ps.report@gmx.net>
> Poslano: torek, 27. oktober 2020 23:08
> Za: RR <rob.r374@gmail.com>
> Kp: buildroot at busybox.net
> Zadeva: Re: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7
> 
> Hello Rob,
> 
> On Tue, 27 Oct 2020 08:41:38 +0100, "RR" <rob.r374@gmail.com> wrote:
> 
> > Hello Peter,
> >
> > thank you a lot. It seems that compilation now goes ok.
> > It seems that I'm closer to the solution.
> >
> > In runtime, I get error on memory allocation. Probably I need to 
> > increase related stack-size, but don't know how to.
> > Is now problem only related to add more stack size ? If yes, how can I 
> > do this ?
> > If not, please give me advice what to do next...  
> 
> Sorry, did not own a sample of your hardware (and lacking any experience on
> this type of 'small' embedded systems), so no more help from my side...
> 
> Regards,
> Peter
> 
> >
> > The only way I found was  _FLAT_STACKSIZE but I haven't found any 
> > examples on how to use it.
> > Adding MOSQUITTO_FLAT_STACKSIZE=1048576 didn't help. I was  probably 
> > doing it wrong way...
> > Also, mosquitto produces more binaries as  output...
> >
> > Thanks in advance,
> > Regards,
> > Rob.
> >
> > Command line:
> > ~ # free
> >                         total        used        free      shared
> > buff/cache   available
> > Mem:          11864        6728        3908           0        1228
> > 3460
> >
> > ~ # mosquitto_pub -d --debug -h xxxxxxxxxxxxx  -t yyyyyyyyyyyyy -m 
> > Test -i mo
> > sq_pub111 --cafile /etc/res/ca.crt -p 8883  --cert /etc/res/client.crt 
> > --key /et c/res/client.key --insecure --repeat 10000 --repeat-delay 10
> > mosquitto_pub: page allocation failure: order:8, 
> > mode:0xcc0(GFP_KERNEL),
> > nodemask=(null)
> > nommu: Allocation of length 860160 from process 67 (mosquitto_pub) 
> > failed
> > binfmt_flat: Unable to mmap process text, errno -12 SEGV
> >
> >
> > DMESG:
> > Mem-Info:
> > active_anon:0 inactive_anon:0 isolated_anon:0
> > active_file:0 inactive_file:20 isolated_file:0
> > unevictable:202 dirty:0 writeback:0 unstable:0
> > slab_reclaimable:0 slab_unreclaimable:809
> > mapped:0 shmem:0 pagetables:0 bounce:0
> > free:1140 free_pcp:0 free_cma:0
> > Node 0 active_anon:0kB inactive_anon:0kB active_file:0kB 
> > inactive_file:80kB unevictable:808kB isolated(anon):0kB 
> > isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB 
> > writeback_tmp:0kB unstable:0kB all_unreclaimable? no Normal 
> > free:4560kB min:432kB low:540kB high:648kB reserved_highatomic:0KB 
> > active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB 
> > unevictable:808kB writepending:0kB present:15296kB managed:11864kB 
> > mlocked:0kB kernel_stack:280kB pagetables:0kB bounce:0kB free_pcp:0kB 
> > local_pcp:0kB free_cma:0kB
> > lowmem_reserve[]: 0 0
> > Normal: 30*4kB (UM) 29*8kB (UM) 11*16kB (UM) 8*32kB (UM) 11*64kB (UM) 
> > 4*128kB (M) 4*256kB (UM) 3*512kB (M) 0*1024kB 0*2048kB 0*4096kB = 
> > 4560kB
> > 222 total pagecache pages
> > 3824 pages RAM
> > 0 pages HighMem/MovableOnly
> > 858 pages reserved
> > nommu: Allocation of length 860160 from process 67 (mosquitto_pub) 
> > failed
> > active_anon:0 inactive_anon:0 isolated_anon:0
> > active_file:0 inactive_file:20 isolated_file:0
> > unevictable:202 dirty:0 writeback:0 unstable:0
> > slab_reclaimable:0 slab_unreclaimable:809
> > mapped:0 shmem:0 pagetables:0 bounce:0
> > free:1140 free_pcp:0 free_cma:0
> > Node 0 active_anon:0kB inactive_anon:0kB active_file:0kB 
> > inactive_file:80kB unevictable:808kB isolated(anon):0kB 
> > isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB 
> > writeback_tmp:0kB unstable:0kB all_unreclaimable? no Normal 
> > free:4560kB min:432kB low:540kB high:648kB reserved_highatomic:0KB 
> > active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB 
> > unevictable:808kB writepending:0kB present:15296kB managed:11864kB 
> > mlocked:0kB kernel_stack:280kB pagetables:0kB bounce:0kB free_pcp:0kB 
> > local_pcp:0kB free_cma:0kB
> > lowmem_reserve[]: 0 0
> > Normal: 30*4kB (UM) 29*8kB (UM) 11*16kB (UM) 8*32kB (UM) 11*64kB (UM) 
> > 4*128kB (M) 4*256kB (UM) 3*512kB (M) 0*1024kB 0*2048kB 0*4096kB = 
> > 4560kB
> > 222 total pagecache pages
> > binfmt_flat: Unable to mmap process text, errno -12
> >
> > ----------------------------------------------------------------------
> > ------
> > ----------------------------------------------------------------------
> > ------
> > ----------------------------------------------------------------------
> > ------
> > ---
> > -----Original Message-----
> > From: Peter Seiderer <ps.report@gmx.net>
> > Sent: Sunday, October 25, 2020 10:22 PM
> > To: RR <rob.r374@gmail.com>
> > Cc: buildroot at busybox.net
> > Subject: Re: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7
> >
> > Hello Rob,
> >
> > On Sun, 25 Oct 2020 11:33:05 +0100, "RR" <rob.r374@gmail.com> wrote:
> >  
> > > Hello,
> > >
> > > I'm enclosing my defconfig... I'm basically compiling for ARM
> > > Cortex-M7
> > > (stm32f769 discovery board).
> > >
> > > What I have additionally spotted is that mosquiotto_sub doesn't 
> > > crash with same error, but it doesn't have ssl options working.
> > > So probably my first problem is that libopenssl doesn't compile  
> > properly...  
> > >
> > > When I try to compile it separately, by using
> > > 	make libopenssl-reconfigure
> > >
> > > it seems that it doesn't have target architecture defined. If I add 
> > > BR2_PACKAGE_TARGET_ARCH="arm-v4" to make call, I end up in error of 
> > > missing file (it's also weird why win32 files are included in 
> > > compilation at all) :
> > >
> > > /home/robi/Razvoj/Linux/Buildroot/JE_UcLinux/buildroot/../host/bin/a
> > > rm -build root-uclinux-uclibcgnueabi-gcc  -I. -Iinclude -fPIC 
> > > -pthread -Wa,--noexecstack -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
> > > -D_FILE_OFFSET_BITS=64  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
> > > -D_FILE_OFFSET_BITS=64  -Os    -Wl,-elf2flt -static -DHAVE_FORK=0
> > > -DOPENSSL_NO_MADVISE -DOPENSSL_NO_ASYNC    -Wl,-elf2flt -static
> > > -DOPENSSL_USE_NODELETE -DOPENSSL_PIC -DOPENSSL_CPUID_OBJ 
> > > -DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_GF2m -DSHA1_ASM -DSHA256_ASM 
> > > -DSHA512_ASM -DKECCAK1600_ASM -DAES_ASM -DBSAES_ASM -DGHASH_ASM 
> > > -DECP_NISTZ256_ASM -DPOLY1305_ASM -DOPENSSLDIR="\"/etc/ssl\""
> > > -DENGINESDIR="\"/usr/lib/engines-1.1\"" -DZLIB -DNDEBUG 
> > > -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 
> > > -MMD -MF crypto/dso/dso_win32.d.tmp -MT crypto/dso/dso_win32.o -c -o 
> > > crypto/dso/dso_win32.o crypto/dso/dso_win32.c
> > > crypto/dso/dso_dlfcn.c:28:12: fatal error: dlfcn.h: No such file or 
> > > directory  #  include <dlfcn.h>
> > >             ^~~~~~~~~
> > > compilation terminated.
> > >
> > > Any advice where I can learn or get libopenssl compiled properly?  
> >
> > Use buildroot and take a look at the log and/or compile output...
> >
> >  
> > >  Then I can proceed to mosquitto, because it uses libopenssl.  
> >
> > The following defconfig compiles fine (no runtime test because of lack 
> > of
> > hardware):
> >
> > BR2_arm=y
> > BR2_cortex_m7=y
> > BR2_TOOLCHAIN_BUILDROOT_CXX=y
> > BR2_PACKAGE_HOST_ELF2FLT=y
> > BR2_SYSTEM_DHCP="eth0"
> > BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
> > BR2_PACKAGE_SDL=y
> > BR2_PACKAGE_SDL_TTF=y
> > BR2_PACKAGE_MBEDTLS=y
> > BR2_PACKAGE_OPENSSL=y
> > BR2_PACKAGE_LIBOPENSSL_BIN=y
> > BR2_PACKAGE_LIBPTHREAD_STUBS=y
> > BR2_PACKAGE_DROPBEAR=y
> > BR2_PACKAGE_MOSQUITTO=y
> > BR2_PACKAGE_NET_TOOLS=y
> > BR2_TARGET_ROOTFS_EXT2=y
> > # BR2_TARGET_ROOTFS_TAR is not set
> > BR2_PACKAGE_HOST_OPENOCD=y
> >
> >
> > The mosquitto package compile gets the right make options, e.g.:
> >
> > /usr/bin/make -j17 -C .../build/mosquitto-1.6.12 [...] WITH_WRAP=no 
> > WITH_DOCS=no WITH_STATIC_LIBRARIES=yes WITH_SHARED_LIBRARIES=no 
> > WITH_ADNS=no WITH_THREADING=no WITH_TLS=yes 
> > CLIENT_STATIC_LDADD="`/home/seiderer/Work/Buildroot/build_openssl_mosq
> > uitto_ 001/host/bin/pkg-config --libs openssl`" WITH_SRV=no 
> > WITH_WEBSOCKETS=no
> >
> >  
> > > I'm probably doing something obviously wrong...
> > > I'm using buildroot release tag 2020.05...
> > >
> > > Thanks in advance,
> > > Regards,
> > >
> > > -----Original Message-----
> > > From: Peter Seiderer <ps.report@gmx.net>
> > > Sent: Monday, October 19, 2020 9:11 PM
> > > To: rob.r374 at gmail.com
> > > Cc: buildroot at busybox.net
> > > Subject: Re: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7
> > >
> > > Hello Rob,
> > >
> > > On Mon, 19 Oct 2020 02:20:00 +0200, <rob.r374@gmail.com> wrote:
> > >  
> > > > Hello,
> > > >
> > > >
> > > >
> > > > I'm trying to include Mosquitto with OpenSSL support on Buildroot.
> > > >
> > > >
> > > >
> > > > On working Buildroot basic build, I've added packages and setup 
> > > > static libs
> > > > :
> > > >
> > > > BR2_PACKAGE_LIBOPENSSL=y
> > > >
> > > > BR2_PACKAGE_MOSQUITTO=y
> > > >
> > > > BR2_PACKAGE_MBEDTLS=y
> > > >
> > > > BR2_STATIC_LIBS=y
> > > >
> > > > If I try to run Mosquitto tools (and MbedTLS test), I get :
> > > >
> > > > ~ # mosquitto_pub
> > > >
> > > > binfmt_flat: reference 0xffb4d0 to shared library 127, killing 
> > > > mosquitto_pub!
> > > >
> > > > SEGV
> > > >
> > > > ~ # mosquitto_sub
> > > >
> > > > Error: You must specify a topic to subscribe to.
> > > >
> > > > Use 'mosquitto_sub --help' to see usage.
> > > >
> > > >
> > > >
> > > > ~ # ssl_client2
> > > >
> > > > sh: can't execute 'ssl_client2': No such file or directory  
> >
> > ssh_client2 is from mbedtls, but BR2_PACKAGE_MBEDTLS_PROGRAMS depends 
> > on BR2_USE_MMU which is not set for your configuration...
> >  
> > > >
> > > >
> > > >
> > > > It's weird, because mosquitto_pub complains about shared lib, but 
> > > > I have defined static libraries only (at least I think so).
> > > >
> > > > In addition, mosquitto_sub works, but it seems it doesn't receive 
> > > > SSL related arguments - seems like it was not compiled with 
> > > > OpenSSL  
> lib.
> >
> > What do your mean with 'doesn't receive SSL related arguments'?
> >
> > Did your try a full re-build?
> >
> > Regards,
> > Peter
> >
> >  
> > > >
> > > > Also, ssl_client2 or other tools from MbedTLS cannot be found.
> > > >
> > > >
> > > >
> > > > How to solve those problems ?
> > > >
> > > >
> > > >
> > > > Also I'm not sure how to check for each package - compilation, 
> > > > installation, errors, warnings etc.  
> > >
> > > Did you do/try a full rebuild after changing your config ([1])?
> > >
> > > If the problem still exists after a full rebuild please provide your 
> > > .config or defconfig file and the buildroot version your are using...
> > >
> > > Regards,
> > > Peter
> > >
> > > [1] https://buildroot.org/downloads/manual/manual.html#full-rebuild
> > >  
> > > >
> > > >
> > > >
> > > > Regards,
> > > >
> > > > Rob.
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >  
> > >  
> >
> >  
> 
> 
> 
> --
> Ta e-po?ta je bila pregledana z Avast protivirusnim programom.
> https://www.avast.com/antivirus
> 
> 
> _______________________________________________
> buildroot mailing list
> buildroot at busybox.net
> http://lists.busybox.net/mailman/listinfo/buildroot

[Buildroot] OpenSSL & Mosquitto on ARM Cortex M7

[rob.r374 at gmail.com]

Hello,

I've made few steps forward... 

To summarize quickly (because email got quite big)...
My problem was that I couldn't run any longer binaries.

> > ~ # mosquitto_pub -d --debug -h xxxxxxxxxxxxx  -t yyyyyyyyyyyyy -m
> > Test -i mo
> > sq_pub111 --cafile /etc/res/ca.crt -p 8883  --cert /etc/res/client.crt
> > --key /et c/res/client.key --insecure --repeat 10000 --repeat-delay 10
> > mosquitto_pub: page allocation failure: order:8,
> > mode:0xcc0(GFP_KERNEL),
> > nodemask=(null)
> > nommu: Allocation of length 860160 from process 67 (mosquitto_pub)
> > failed
> > binfmt_flat: Unable to mmap process text, errno -12 SEGV

And dmesg revealed my problem :
DMESG:
> > Mem-Info:
....
> > Normal: 30*4kB (UM) 29*8kB (UM) 11*16kB (UM) 8*32kB (UM) 11*64kB (UM)
> > 4*128kB (M) 4*256kB (UM) 3*512kB (M) 0*1024kB 0*2048kB 0*4096kB =
> > 4560kB
> > 222 total pagecache pages
> > binfmt_flat: Unable to mmap process text, errno -12

If I understand right, I don't have more than 512kB contiguous space in memory to put binary in on the execution.
Therefore I tried to free more memory and I succeeded. My "free" reports almost twice the memory available now vs before.
~ # free
              total        used        free      shared  buff/cache   available
Mem:          12324        5764        5976           0         584        5596

And now my mosquitto binaries can run. But now problem happens in openSSL.
~ # mosquitto_sub -d --debug -h xxx.yyy.com  -t TestData -i LP --cafile /etc/res/ca.crt -p 8883  --cert /etc/res/client.crt --key /etc/res/client.key --insecure
Client LPWAN sending CONNECT
OpenSSL Error[0]: error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed
Error: A TLS error occurred.

I'm pretty confident that all my credentials are ok, because I run normal Linux mosquitto client on same 
certificates  without any problems. 

I suspect that maybe I need to increase stack for this binary (remember, I'm in noMMU environment with flat file format) or something else is wrong.

But a good start would be to get more output from openssl, to be able to identify the problem.

Any advice, how to track and solve this problem ?

Thanks in advance,
Regards,
Rob.

-----Izvirno sporo?ilo-----
Od: Peter Seiderer <ps.report@gmx.net> 
Poslano: ponedeljek, 02. november 2020 17:38
Za: RR <rob.r374@gmail.com>
Kp: buildroot at busybox.net
Zadeva: Re: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7

Hello Rob,

On Mon, 2 Nov 2020 11:33:00 +0100, "RR" <rob.r374@gmail.com> wrote:

> Hello,
>
> I've got one step further, but still don't know how to solve it.
> It seems that mosquitto is compiled in a bit different way as other 
> working binaries in nommu and flat file format environment (ARM Cortex 
> M7).
>
> For example, when I check dropbear binary (which works) and mosquitto 
> which segfaults with flthdr I get output below.
> I'm not sure if this is the cause of segfault, but would like to check 
> whether it is ok or not.
>
> What is the difference between Load-to-Ram and Has-PIC-GOT flags?
> It seems that I can add Load-to-Ram to Has-PIC-GOT using flthdr tool, 
> but cannot get rid ot "Has-PIC-GOT" flag.

To get rid of the 'Has-PIC-GOT' see patch [1] (apply the patch to your buildroot source and re-build the mosquitto package), maybe it makes a positive difference at run-time?

For the target I get now:

	$ ./host/arm-buildroot-uclinux-uclibcgnueabi/bin/flthdr
target/usr/bin/mosquitto_sub
target/usr/bin/mosquitto_sub
    Magic:        bFLT
    Rev:          4
    Build Date:   Mon Nov  2 17:24:45 2020
    Entry:        0x45
    Data Start:   0xd31dc
    Data End:     0x146e60
    BSS End:      0x14e170
    Stack Size:   0x1000
    Reloc Start:  0x146e60
    Reloc Count:  0x4bbb
    Flags:        0x1 ( Load-to-Ram )


A description of the various entries/flags can be found in [2]...

Regards,
Peter

[1] 
https://patchwork.ozlabs.org/project/buildroot/patch/20201102162948.23132-1-ps.report at gmx.net/
[2] 
http://read.pudn.com/downloads291/doc/fileformat/1309763/uClinux%20-%20BFLT%20Binary%20Flat%20Format.doc

>
> Thanks in advance,
> Regards,
> Rob.
>
>
> Flthdr output:
>
>  ./dropbearkey
>     Magic:        bFLT
>     Rev:          4
>     Build Date:   Mon Nov  2 00:02:47 2020
>     Entry:        0x45
>     Data Start:   0x2d374
>     Data End:     0x3bd88
>     BSS End:      0x51f00
>     Stack Size:   0x1000
>     Reloc Start:  0x3bd88
>     Reloc Count:  0xa6b
>     Flags:        0x1 ( Load-to-Ram )
>
> ./mosquitto_pub
>     Magic:        bFLT
>     Rev:          4
>     Build Date:   Mon Nov  2 01:47:54 2020
>     Entry:        0x45
>     Data Start:   0xd17b0
>     Data End:     0x144e40
>     BSS End:      0x14c0c0
>     Stack Size:   0x100000
>     Reloc Start:  0x144e40
>     Reloc Count:  0x2d68
>     Flags:        0x2 ( Has-PIC-GOT )
>
> When I run those files :
>
> ~ # mosquitto_pub
> warn_alloc: 1 callbacks suppressed
> mosquitto_pub: page allocation failure: order:8, mode:0xcc0(GFP_KERNEL),
> nodemask=(null)
> nommu: Allocation of length 860160 from process 169 (mosquitto_pub) failed
> binfmt_flat: Unable to mmap process text, errno -12
> SEGV
>
> ~ # dropbearkey
> Must specify a key filename
> Usage: dropbearkey -t <type> -f <filename> [-s bits]
> -t type Type of key to generate. One of:
>                 rsa
>                 ecdsa
> -f filename    Use filename for the secret key.
>                ~/.ssh/id_dropbear is recommended for client keys.
> -s bits Key size in bits, should be a multiple of 8 (optional)
>            ECDSA has sizes 256 384 521
> -y              Just print the publickey and fingerprint for the
>                 private key in <filename>.
>
>
> -----Original Message-----
> From: rob.r374 at gmail.com <rob.r374@gmail.com>
> Sent: Wednesday, October 28, 2020 2:30 AM
> To: 'Peter Seiderer' <ps.report@gmx.net>
> Cc: buildroot at busybox.net
> Subject: RE: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7
>
> Hello,
>
> thanks Peter... You've helped me a lot.
>
> Compile now goes ok, but when I run on target I get :
> ~ # mosquitto_pub
> mosquitto_pub: page allocation failure: order:8, mode:0xcc0(GFP_KERNEL),
> nodemask=(null)
> nommu: Allocation of length 860160 from process 59 (mosquitto_pub) failed
> binfmt_flat: Unable to mmap process text, errno -12 SEGV
>
> And if I try to check flat file format and stack size of binary, I cannot
> access binary from build system :
> /buildroot/output/host/arm-buildroot-uclinux-uclibcgnueabi/bin$ 
> ./flthdr -p
> ./../../../target/usr/bin/mosquitto_pub
> Cannot open ./../../../target/usr/bin/mosquitto_pub
>
> So I cannot check stack size and I'm trapped.
> Is there any other option to declare stack size in compilation step of
> mosquitto under buildroot ?
> Any advice? Anyone more experienced on these non-mmu and flat file format
> devices ?
>
> Thanks in advance,
> Regards,
> Rob.
>
>
>
> -----Izvirno sporo?ilo-----
> Od: Peter Seiderer <ps.report@gmx.net>
> Poslano: torek, 27. oktober 2020 23:08
> Za: RR <rob.r374@gmail.com>
> Kp: buildroot at busybox.net
> Zadeva: Re: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7
>
> Hello Rob,
>
> On Tue, 27 Oct 2020 08:41:38 +0100, "RR" <rob.r374@gmail.com> wrote:
>
> > Hello Peter,
> >
> > thank you a lot. It seems that compilation now goes ok.
> > It seems that I'm closer to the solution.
> >
> > In runtime, I get error on memory allocation. Probably I need to
> > increase related stack-size, but don't know how to.
> > Is now problem only related to add more stack size ? If yes, how can I
> > do this ?
> > If not, please give me advice what to do next...
>
> Sorry, did not own a sample of your hardware (and lacking any experience 
> on
> this type of 'small' embedded systems), so no more help from my side...
>
> Regards,
> Peter
>
> >
> > The only way I found was  _FLAT_STACKSIZE but I haven't found any
> > examples on how to use it.
> > Adding MOSQUITTO_FLAT_STACKSIZE=1048576 didn't help. I was  probably
> > doing it wrong way...
> > Also, mosquitto produces more binaries as  output...
> >
> > Thanks in advance,
> > Regards,
> > Rob.
> >
> > Command line:
> > ~ # free
> >                         total        used        free      shared
> > buff/cache   available
> > Mem:          11864        6728        3908           0        1228
> > 3460
> >
> > ~ # mosquitto_pub -d --debug -h xxxxxxxxxxxxx  -t yyyyyyyyyyyyy -m
> > Test -i mo
> > sq_pub111 --cafile /etc/res/ca.crt -p 8883  --cert /etc/res/client.crt
> > --key /et c/res/client.key --insecure --repeat 10000 --repeat-delay 10
> > mosquitto_pub: page allocation failure: order:8,
> > mode:0xcc0(GFP_KERNEL),
> > nodemask=(null)
> > nommu: Allocation of length 860160 from process 67 (mosquitto_pub)
> > failed
> > binfmt_flat: Unable to mmap process text, errno -12 SEGV
> >
> >
> > DMESG:
> > Mem-Info:
> > active_anon:0 inactive_anon:0 isolated_anon:0
> > active_file:0 inactive_file:20 isolated_file:0
> > unevictable:202 dirty:0 writeback:0 unstable:0
> > slab_reclaimable:0 slab_unreclaimable:809
> > mapped:0 shmem:0 pagetables:0 bounce:0
> > free:1140 free_pcp:0 free_cma:0
> > Node 0 active_anon:0kB inactive_anon:0kB active_file:0kB
> > inactive_file:80kB unevictable:808kB isolated(anon):0kB
> > isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB
> > writeback_tmp:0kB unstable:0kB all_unreclaimable? no Normal
> > free:4560kB min:432kB low:540kB high:648kB reserved_highatomic:0KB
> > active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB
> > unevictable:808kB writepending:0kB present:15296kB managed:11864kB
> > mlocked:0kB kernel_stack:280kB pagetables:0kB bounce:0kB free_pcp:0kB
> > local_pcp:0kB free_cma:0kB
> > lowmem_reserve[]: 0 0
> > Normal: 30*4kB (UM) 29*8kB (UM) 11*16kB (UM) 8*32kB (UM) 11*64kB (UM)
> > 4*128kB (M) 4*256kB (UM) 3*512kB (M) 0*1024kB 0*2048kB 0*4096kB =
> > 4560kB
> > 222 total pagecache pages
> > 3824 pages RAM
> > 0 pages HighMem/MovableOnly
> > 858 pages reserved
> > nommu: Allocation of length 860160 from process 67 (mosquitto_pub)
> > failed
> > active_anon:0 inactive_anon:0 isolated_anon:0
> > active_file:0 inactive_file:20 isolated_file:0
> > unevictable:202 dirty:0 writeback:0 unstable:0
> > slab_reclaimable:0 slab_unreclaimable:809
> > mapped:0 shmem:0 pagetables:0 bounce:0
> > free:1140 free_pcp:0 free_cma:0
> > Node 0 active_anon:0kB inactive_anon:0kB active_file:0kB
> > inactive_file:80kB unevictable:808kB isolated(anon):0kB
> > isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB
> > writeback_tmp:0kB unstable:0kB all_unreclaimable? no Normal
> > free:4560kB min:432kB low:540kB high:648kB reserved_highatomic:0KB
> > active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:80kB
> > unevictable:808kB writepending:0kB present:15296kB managed:11864kB
> > mlocked:0kB kernel_stack:280kB pagetables:0kB bounce:0kB free_pcp:0kB
> > local_pcp:0kB free_cma:0kB
> > lowmem_reserve[]: 0 0
> > Normal: 30*4kB (UM) 29*8kB (UM) 11*16kB (UM) 8*32kB (UM) 11*64kB (UM)
> > 4*128kB (M) 4*256kB (UM) 3*512kB (M) 0*1024kB 0*2048kB 0*4096kB =
> > 4560kB
> > 222 total pagecache pages
> > binfmt_flat: Unable to mmap process text, errno -12
> >
> > ----------------------------------------------------------------------
> > ------
> > ----------------------------------------------------------------------
> > ------
> > ----------------------------------------------------------------------
> > ------
> > ---
> > -----Original Message-----
> > From: Peter Seiderer <ps.report@gmx.net>
> > Sent: Sunday, October 25, 2020 10:22 PM
> > To: RR <rob.r374@gmail.com>
> > Cc: buildroot at busybox.net
> > Subject: Re: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7
> >
> > Hello Rob,
> >
> > On Sun, 25 Oct 2020 11:33:05 +0100, "RR" <rob.r374@gmail.com> wrote:
> >
> > > Hello,
> > >
> > > I'm enclosing my defconfig... I'm basically compiling for ARM
> > > Cortex-M7
> > > (stm32f769 discovery board).
> > >
> > > What I have additionally spotted is that mosquiotto_sub doesn't
> > > crash with same error, but it doesn't have ssl options working.
> > > So probably my first problem is that libopenssl doesn't compile
> > properly...
> > >
> > > When I try to compile it separately, by using
> > > 	make libopenssl-reconfigure
> > >
> > > it seems that it doesn't have target architecture defined. If I add
> > > BR2_PACKAGE_TARGET_ARCH="arm-v4" to make call, I end up in error of
> > > missing file (it's also weird why win32 files are included in
> > > compilation at all) :
> > >
> > > /home/robi/Razvoj/Linux/Buildroot/JE_UcLinux/buildroot/../host/bin/a
> > > rm -build root-uclinux-uclibcgnueabi-gcc  -I. -Iinclude -fPIC
> > > -pthread -Wa,--noexecstack -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
> > > -D_FILE_OFFSET_BITS=64  -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
> > > -D_FILE_OFFSET_BITS=64  -Os    -Wl,-elf2flt -static -DHAVE_FORK=0
> > > -DOPENSSL_NO_MADVISE -DOPENSSL_NO_ASYNC    -Wl,-elf2flt -static
> > > -DOPENSSL_USE_NODELETE -DOPENSSL_PIC -DOPENSSL_CPUID_OBJ
> > > -DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_GF2m -DSHA1_ASM -DSHA256_ASM
> > > -DSHA512_ASM -DKECCAK1600_ASM -DAES_ASM -DBSAES_ASM -DGHASH_ASM
> > > -DECP_NISTZ256_ASM -DPOLY1305_ASM -DOPENSSLDIR="\"/etc/ssl\""
> > > -DENGINESDIR="\"/usr/lib/engines-1.1\"" -DZLIB -DNDEBUG
> > > -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
> > > -MMD -MF crypto/dso/dso_win32.d.tmp -MT crypto/dso/dso_win32.o -c -o
> > > crypto/dso/dso_win32.o crypto/dso/dso_win32.c
> > > crypto/dso/dso_dlfcn.c:28:12: fatal error: dlfcn.h: No such file or
> > > directory  #  include <dlfcn.h>
> > >             ^~~~~~~~~
> > > compilation terminated.
> > >
> > > Any advice where I can learn or get libopenssl compiled properly?
> >
> > Use buildroot and take a look at the log and/or compile output...
> >
> >
> > >  Then I can proceed to mosquitto, because it uses libopenssl.
> >
> > The following defconfig compiles fine (no runtime test because of lack
> > of
> > hardware):
> >
> > BR2_arm=y
> > BR2_cortex_m7=y
> > BR2_TOOLCHAIN_BUILDROOT_CXX=y
> > BR2_PACKAGE_HOST_ELF2FLT=y
> > BR2_SYSTEM_DHCP="eth0"
> > BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
> > BR2_PACKAGE_SDL=y
> > BR2_PACKAGE_SDL_TTF=y
> > BR2_PACKAGE_MBEDTLS=y
> > BR2_PACKAGE_OPENSSL=y
> > BR2_PACKAGE_LIBOPENSSL_BIN=y
> > BR2_PACKAGE_LIBPTHREAD_STUBS=y
> > BR2_PACKAGE_DROPBEAR=y
> > BR2_PACKAGE_MOSQUITTO=y
> > BR2_PACKAGE_NET_TOOLS=y
> > BR2_TARGET_ROOTFS_EXT2=y
> > # BR2_TARGET_ROOTFS_TAR is not set
> > BR2_PACKAGE_HOST_OPENOCD=y
> >
> >
> > The mosquitto package compile gets the right make options, e.g.:
> >
> > /usr/bin/make -j17 -C .../build/mosquitto-1.6.12 [...] WITH_WRAP=no
> > WITH_DOCS=no WITH_STATIC_LIBRARIES=yes WITH_SHARED_LIBRARIES=no
> > WITH_ADNS=no WITH_THREADING=no WITH_TLS=yes
> > CLIENT_STATIC_LDADD="`/home/seiderer/Work/Buildroot/build_openssl_mosq
> > uitto_ 001/host/bin/pkg-config --libs openssl`" WITH_SRV=no
> > WITH_WEBSOCKETS=no
> >
> >
> > > I'm probably doing something obviously wrong...
> > > I'm using buildroot release tag 2020.05...
> > >
> > > Thanks in advance,
> > > Regards,
> > >
> > > -----Original Message-----
> > > From: Peter Seiderer <ps.report@gmx.net>
> > > Sent: Monday, October 19, 2020 9:11 PM
> > > To: rob.r374 at gmail.com
> > > Cc: buildroot at busybox.net
> > > Subject: Re: [Buildroot] OpenSSL & Mosquitto on ARM Cortex M7
> > >
> > > Hello Rob,
> > >
> > > On Mon, 19 Oct 2020 02:20:00 +0200, <rob.r374@gmail.com> wrote:
> > >
> > > > Hello,
> > > >
> > > >
> > > >
> > > > I'm trying to include Mosquitto with OpenSSL support on Buildroot.
> > > >
> > > >
> > > >
> > > > On working Buildroot basic build, I've added packages and setup
> > > > static libs
> > > > :
> > > >
> > > > BR2_PACKAGE_LIBOPENSSL=y
> > > >
> > > > BR2_PACKAGE_MOSQUITTO=y
> > > >
> > > > BR2_PACKAGE_MBEDTLS=y
> > > >
> > > > BR2_STATIC_LIBS=y
> > > >
> > > > If I try to run Mosquitto tools (and MbedTLS test), I get :
> > > >
> > > > ~ # mosquitto_pub
> > > >
> > > > binfmt_flat: reference 0xffb4d0 to shared library 127, killing
> > > > mosquitto_pub!
> > > >
> > > > SEGV
> > > >
> > > > ~ # mosquitto_sub
> > > >
> > > > Error: You must specify a topic to subscribe to.
> > > >
> > > > Use 'mosquitto_sub --help' to see usage.
> > > >
> > > >
> > > >
> > > > ~ # ssl_client2
> > > >
> > > > sh: can't execute 'ssl_client2': No such file or directory
> >
> > ssh_client2 is from mbedtls, but BR2_PACKAGE_MBEDTLS_PROGRAMS depends
> > on BR2_USE_MMU which is not set for your configuration...
> >
> > > >
> > > >
> > > >
> > > > It's weird, because mosquitto_pub complains about shared lib, but
> > > > I have defined static libraries only (at least I think so).
> > > >
> > > > In addition, mosquitto_sub works, but it seems it doesn't receive
> > > > SSL related arguments - seems like it was not compiled with
> > > > OpenSSL
> lib.
> >
> > What do your mean with 'doesn't receive SSL related arguments'?
> >
> > Did your try a full re-build?
> >
> > Regards,
> > Peter
> >
> >
> > > >
> > > > Also, ssl_client2 or other tools from MbedTLS cannot be found.
> > > >
> > > >
> > > >
> > > > How to solve those problems ?
> > > >
> > > >
> > > >
> > > > Also I'm not sure how to check for each package - compilation,
> > > > installation, errors, warnings etc.
> > >
> > > Did you do/try a full rebuild after changing your config ([1])?
> > >
> > > If the problem still exists after a full rebuild please provide your
> > > .config or defconfig file and the buildroot version your are using...
> > >
> > > Regards,
> > > Peter
> > >
> > > [1] https://buildroot.org/downloads/manual/manual.html#full-rebuild
> > >
> > > >
> > > >
> > > >
> > > > Regards,
> > > >
> > > > Rob.
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> >
> >
>
>
>
> --
> Ta e-po?ta je bila pregledana z Avast protivirusnim programom.
> https://www.avast.com/antivirus
>
>
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-- 
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https://www.avast.com/antivirus

[Buildroot] OpenSSL & Mosquitto on ARM Cortex M7

[Peter Korsgaard]

>>>>>   <rob.r374@gmail.com> writes:

 > Hello,
 > I'm trying to include Mosquitto with OpenSSL support on Buildroot. 

 

 > On working Buildroot basic build, I've added packages and setup static libs
 > :

 > BR2_PACKAGE_LIBOPENSSL=y

 > BR2_PACKAGE_MOSQUITTO=y 

 > BR2_PACKAGE_MBEDTLS=y

Why both mbedtls and openssl?

 > BR2_STATIC_LIBS=y

 > If I try to run Mosquitto tools (and MbedTLS test), I get :

 > ~ # mosquitto_pub

 > binfmt_flat: reference 0xffb4d0 to shared library 127, killing
 > mosquitto_pub!

binfmt_flat? What architecture are you building for / what is your
entire defconfig?

-- 
Bye, Peter Korsgaard