[ltt-dev] Assert error ust strncpy

[david.goulet@polymtl.ca (David Goulet)]

Hi Mathieu,

I have a quite big problem since the new patch with strncpy for UST.

With a high number of events (100000 +), I got this :

buffers.h:525: ust_buffers_write: Assertion `buf_offset + len < 
buf->chan->subbuf_size*buf->chan->subbuf_cnt' failed.

At that line in (libust/buffers.h) you have two asserts and the first 
one seems not needed because the second assert check the exact same 
thing with "len" added... but still apply for the case of the first one.

Anyway, is this means that the subbuffers are full? I'm actually in 
OVERWRITE mode so... why does the tracing stop there?

Test case (tar.gz) in attachment. Tested on 2 separate machines.

UST_TRACE=1 UST_AUTOPROBE=1 UST_OVERWRITE=1 UST_AUTOCOLLECT=0 
./withtracepoint 1 10000000

Thanks
-- 
David Goulet
LTTng project, DORSAL Lab.

PGP/GPG : 1024D/16BD8563
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