Re:Re: running net snmp 5.7.3 on arm aarch64, is it ok?

Bart,
 thanks for your analysis.
I have found the root cause:
I add init function, init_snmp, init_agent, and mib init function all in one thread start function.
this function is called more than one when device startup. so may cause some strange issues.


when I make it just called once, it is ok till now.


B.R
Derrick



在 2018-09-20 21:48:25，"Bart Van Assche" <[email protected]> 写道：
>On 9/18/18 11:53 PM, 宋金鑫 wrote:
>> I am running our stack on new platform: arm aarch64, I get some strange 
>> crashes.
>> like:
>> #0  0xf6f91fd0 in strcmp () from 
>> /repo/HD_R/rootfs/brcm/fs.install/lib/libc.so.6
>> #1  0xf7373bac in internal_register_config_handler ()
>>     from /repo/HD_R/rootfs/brcm/fs.install/usr/lib/libnetsnmp.so.30
>> #2  0xf7373d74 in register_const_config_handler.localalias ()
>>     from /repo/HD_R/rootfs/brcm/fs.install/usr/lib/libnetsnmp.so.30
>> #3  0xf738145c in netsnmp_ds_register_config () from 
>> /repoHD_R/rootfs/brcm/fs.install/usr/lib/libnetsnmp.so.30
>> #4  0xf7402904 in init_agent_read_config ()
>>     from /repo/HD_R/rootfs/brcm/fs.install/usr/lib/libnetsnmpagent.so.30
>> #5  0xf740f118 in init_agent () from 
>> /repo/HD_R/rootfs/brcm/fs.install/usr/lib/libnetsnmpagent.so.30
>> 
>> the same code is ok on mips 32 bits platform.
>> 
>> do we support 64 bit system?
>
>64-bit Linux is definitely supported. Does Valgrind support aarch64? If 
>so, can you repeat the test that produced the above call stack under 
>Valgrind and see whether that produces more detailed information about 
>the root cause? Analyzing snmpd with Valgrind is possible e.g. as follows:
>
>valgrind --trace-children=yes 
>--trace-children-skip=/usr/bin/env,/bin/sed,/bin/ls,/bin/sh,/bin/bash,/usr/bin/sed,/usr/bin/ls,/usr/bin/perl 
>--track-origins=no --gen-suppressions=all snmpd ${snmpd_options}
>
>Bart.

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