[lttng-dev] Allocation failures with babeltrace and TraceCompass - corrupt trace?

[Mathieu Desnoyers]

----- On Jun 26, 2017, at 5:55 AM, Thomas McGuire thomas.mcguire at kdab.com wrote:

> Hi Michael,
> 
> On 23.06.2017 21:55, Michael Jeanson wrote:
>> I see from the metadata file you provided that your kernel version is
>> 4.9.28-20170428-1, is it built from vanilla kernel sources? If not,
>> could you point us to a git repo or source archive? It would help a lot
>> to figure this out.
> 
> The Linux system is built with ptxdist, which is similar to Yocto. I'm
> not very familiar with ptxdist.
> During the build process, it fetches
> https://www.kernel.org/pub/linux/kernel/v4.x/linux-4.9.tar.xz.
> There are 25 patches in patches/linux-4.9/ in the ptxdist root dir,
> which I assume are all the patches that are applied.
> 
> None of the patches touch the block subsystem, and only one patch
> touches include/trace/, adding a new siox tracepoint. One patch sets
> "20170428-1" as the EXTRAVERSION. I don't know where SUBLEVEL is set to 28.
> 
> include/trace/events/block.h is the same as
> https://github.com/torvalds/linux/blob/v4.9/include/trace/events/block.h.
> 
> That's all relevant information about the kernel I could figure out so far.
> 
> Any other information that would help?

Hi Thomas,

We would need links to the actual tarballs/build scripts and patches of
your specific distribution, for the version you use. The ptxdist packages
on http://www.pengutronix.de/software/ptxdist/ appear to target kernel 3.10,
but yours seems to be based on 4.9.

Without this information, there is very little we can do.

You should probably ask your distribution vendor to look into this as well.

Thanks,

Mathieu

> 
> Regards,
> Thomas
> --
> Thomas McGuire | thomas.mcguire at kdab.com | Senior Software Engineer
> KDAB (Deutschland) GmbH&Co KG, a KDAB Group company
> Tel: +49-30-521325470
> KDAB - The Qt Experts
> 
> 
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-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com