innovaphone Apps SDK Developer Forum

Registered 2 years 232 days

xqThomas Friday, 7 June 2024, 12:19 PM

SDK 13r3 - crash in command.cpp

Hi,

We have an issue where our app crashes due to a SIGSEGV in the Command class.

Some more context, given the nature of the crash.
The service is hosting plenty of instances and has now exceeded 4GB of RAM usage. The crash happens on certain instances, not all of them.

Kind regards,

Thomas

Moderator

Registered 13 years 109 days

Andreas Fink (innovaphone) Friday, 7 June 2024, 12:24 PM

Re: SDK 13r3 - crash in command.cpp

Hello Thomas,

could you post the context of screenshot again, as text. It looks like no screenshot was attached.

Best Regards

Andreas Fink

Registered 2 years 232 days

xqThomas Friday, 7 June 2024, 01:16 PM

Re: SDK 13r3 - crash in command.cpp

Here's the backtrace from the core dump. (Which was missing from the first post).

Program terminated with signal SIGSEGV, Segmentation fault.

#0 0x00007f1329cd7564 in ?? () from /lib64/libc.so.6

[Current thread is 1 (Thread 0x7f121d742640 (LWP 23875))]

(gdb) backtrace

#0 0x00007f1329cd7564 in ?? () from /lib64/libc.so.6

#1 0x000000000070a0c9 in Command::ReadError (this=0x75ae020, fpError=<optimized out>,

fileNoError=1411) at sdk/common/linux/command/command.cpp:330

#2 0x0000000000000010 in ?? ()

#3 0x0000058429be1508 in ?? ()

#4 0x0000000000000000 in ?? ()

Moderator

Registered 13 years 109 days

Andreas Fink (innovaphone) Friday, 7 June 2024, 01:27 PM

Re: SDK 13r3 - crash in command.cpp

This looks like a general out of memory problem, nothing wrong with a particular app that is crushed, just memory that was not reallocated (due out of memory).

The solution would be to add more memory or reduce memory consumption.

Best Regards

Andreas Fink

Registered 9 years 253 days

Uwe 2460 Friday, 7 June 2024, 04:54 PM

Re: SDK 13r3 - crash in command.cpp

Hi Andreas,

the complete App-platform has:

RAM used 6,3 GB (53,9%) from 12 GB

The crashing app has 4,279 (36,56%) after startup.

Even if AP Manager is consuming more and more RAM during time (memory leak), the problem also occurs after AP startup, when there is enough memory (according to AP manager statistics).

Is it possible, that we have 32 Bit process in place, that has problems with 4GB address limit?

kind regards

Uwe

Moderator

Registered 15 years 178 days

Daniel Deterding (innovaphone) Monday, 10 June 2024, 08:20 AM

Re: SDK 13r3 - crash in command.cpp

Hi Uwe,

Apps on our 64bit systems can allocate more than 4GB, this shouldn't be the issue.

We'll need to create a DVL SDK for you with some debug logs.

Can you please create a support case that we can investigate this?

In the meantime, please double check that you do not delete the ICommand object before the TaskComplete/TaskFailed callback. This may also lead to such a trap.

Greetings,
Daniel

Registered 2 years 232 days

xqThomas Tuesday, 11 June 2024, 02:30 PM

Re: SDK 13r3 - crash in command.cpp

Hi Daniel,

Will open a ticket and refer to this forum post.

Kind regards,

Thomas

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